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species</title> <meta name="description" content="Search results for: populus species"> <meta name="keywords" content="populus species"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="populus species"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 3180</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: populus species</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3180</span> The Genetic Diversity and Conservation Status of Natural Populus Nigra Populations in Turkey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asiye%20Ciftci">Asiye Ciftci</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeki%20Kaya"> Zeki Kaya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Populus nigra is one of the most economically and ecologically important forest trees in Turkey, well known for its rapid growth, good ability to vegetative propagation and the extreme uses of its wood. Due to overexploitation, loss of natural distribution area and extreme hybridization and introgression, Populus nigra is one of the most threatened tree species in Turkey and Europe. Using 20 nuclear microsatellite loci, the genetic structure of European black poplar populations along the two largest rivers of Turkey was analyzed. All tested loci were highly polymorphic, displaying 5 to 15 alleles per locus. Observed heterozygosity (overall Ho = 0.79) has been higher than the expected (overall He = 0.58) in each population. Low level of genetic differentiation among populations (FST= 0,03) and excess of heterozygotes for each river were found. Human-mediated dispersal, phenotypic selection, high level of gene flow and extensive circulations of clonal materials may cause those situations. The genetic data obtained from this study could provide the basis for efficient in situ and ex-situ conservation and restoration of species natural populations in its natural habitat as well as having sustainable breeding and poplar plantations in the future. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=populus" title="populus">populus</a>, <a href="https://publications.waset.org/abstracts/search?q=clonal" title=" clonal"> clonal</a>, <a href="https://publications.waset.org/abstracts/search?q=loci" title=" loci"> loci</a>, <a href="https://publications.waset.org/abstracts/search?q=ex%20situ" title=" ex situ"> ex situ</a> </p> <a href="https://publications.waset.org/abstracts/87986/the-genetic-diversity-and-conservation-status-of-natural-populus-nigra-populations-in-turkey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87986.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">295</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3179</span> Cellulose Enhancement in Wood Used in Pulp Production by Overexpression of Korrigan and Sucrose Synthase Genes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anil%20Kumar">Anil Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Diwakar%20Aggarwal"> Diwakar Aggarwal</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Sudhakara%20Reddy"> M. Sudhakara Reddy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The wood of Eucalyptus, Populus and bamboos are some important species used as raw material for the manufacture of pulp. However, higher levels of lignin pose a problem during Kraft pulping and yield of pulp is also lower. In order to increase the yield of pulp per unit wood and reduce the use of chemicals during kraft pulping it is important to reduce the lignin content and/or increase cellulose content in wood. Cellulose biosynthesis in wood takes place by the coordinated action of many enzymes. The two important enzymes are KORRIGAN and SUCROSE SYNTHASE. KORRIGAN (Endo-1,4--glucanase) is implicated in the process of editing growing cellulose chains and improvement of the crystallinity of produced cellulose, whereas SUCROSE SYNTHASE is involved in providing substrate (UDP-glucose) for growing cellulose chains. The present study was aimed at the cloning, characterization and overexpression of these genes in Eucalyptus and Populus. An efficient shoot organogenesis protocol from leaf explants taken from micro shoots of the species has been developed. Agrobacterium mediated genetic transformation using Agrobacterium tumefaciens strain EHA105 and LBA4404 harboring binary vector pBI121 was achieved. Both the genes were cloned from cDNA library of Populus deltoides. These were subsequently characterized using various bioinformatics tools. The cloned genes were then inserted into pBI121 under the CaMV35S promotors replacing GUS gene. The constructs were then mobilized into above strains of Agrobacterium and used for the transformation work. Subsequently, genetic transformation of these clones with target genes following already developed protocol is in progress. Four transgenic lines of Eucalyptus tereticornis overexpressing Korrigan gene under the strong constitutive promoters CaMV35S have been developed, which are being further evaluated. Work on development of more transgenic lines overexpressing these genes in Populus and Eucalyptus is also in progress. This presentation will focus on important developments in this direction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eucalyptus%20tereticornis" title="Eucalyptus tereticornis">Eucalyptus tereticornis</a>, <a href="https://publications.waset.org/abstracts/search?q=genetic%20transformation" title=" genetic transformation"> genetic transformation</a>, <a href="https://publications.waset.org/abstracts/search?q=Kraft%20pulping%20Populus%20deltoides" title=" Kraft pulping Populus deltoides"> Kraft pulping Populus deltoides</a> </p> <a href="https://publications.waset.org/abstracts/98858/cellulose-enhancement-in-wood-used-in-pulp-production-by-overexpression-of-korrigan-and-sucrose-synthase-genes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98858.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">139</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3178</span> Determination of Anti-Fungal Activity of Cedrus deodara Oil against Oligoporus placentus, Trametes versicolor and Xylaria acuminata on Populus deltoids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sauradipta%20Ganguly">Sauradipta Ganguly</a>, <a href="https://publications.waset.org/abstracts/search?q=Akhato%20Sumi"> Akhato Sumi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanjeet%20Kumar%20Hom"> Sanjeet Kumar Hom</a>, <a href="https://publications.waset.org/abstracts/search?q=Ajan%20T.%20Lotha"> Ajan T. Lotha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Populus deltoides is a hardwood used predominantly for the manufacturing of plywood, matchsticks, and paper in India and hence has a higher economical significance. Wood-decaying fungi cause serious damage to Populus deltoides products, as the wood itself is perishable and vulnerable to decaying agents, decreasing their aesthetical value which in return results in significant monetary loss for the wood industries concerned. The aim of the study was to determine the antifungal activity of Cedrus deodara oil against three primary wood-decaying fungi namely white-rot fungi (Trametes versicolor), brown-rot fungi (Oligoporus placentus) and soft-rot fungi (Xylaria acuminata) on Populus deltoides samples under optimum laboratory conditions. The susceptibility of Populus deltoides samples on the fungal attack and the ability of deodar oil to control colonization of the wood rotting fungi on the samples were assessed. Three concentrations of deodar oil were considered for the study as treating solutions, i.e., 4%, 5%, and 6%. The Populus deltoides samples were treated with treating solutions, and the ability of the same to prevent a fungal attack on the samples were assessed using accelerated test in the laboratory at Biochemical Oxygen Demand incubator at temperature (25 ± 2°C) and relative humidity 70 ± 4%. Efficacy test and statistical analysis of deodar oil against Trametes versicolor, Oligoporus placentus, and Xylariaacuminataon P. deltoides samples exhibited light, minor and negligible mycelia growth at 4 %, 5% and 6% concentrations of deodar oil, respectively. Whereas, moderate to heavy attack was observed on the surface of the control samples. Statistical analysis further established that the treatments were statistically significant and had significantly inhibited fungal growth of all the three fungus spp by almost 3 to 5 times. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=populus%20deltoides" title="populus deltoides">populus deltoides</a>, <a href="https://publications.waset.org/abstracts/search?q=Trametes%20versicolor" title=" Trametes versicolor"> Trametes versicolor</a>, <a href="https://publications.waset.org/abstracts/search?q=Oligoporus%20placentus" title=" Oligoporus placentus"> Oligoporus placentus</a>, <a href="https://publications.waset.org/abstracts/search?q=Xylaria%20acuminata" title=" Xylaria acuminata"> Xylaria acuminata</a>, <a href="https://publications.waset.org/abstracts/search?q=Deodar%20oil" title=" Deodar oil"> Deodar oil</a>, <a href="https://publications.waset.org/abstracts/search?q=treatment" title=" treatment"> treatment</a> </p> <a href="https://publications.waset.org/abstracts/107969/determination-of-anti-fungal-activity-of-cedrus-deodara-oil-against-oligoporus-placentus-trametes-versicolor-and-xylaria-acuminata-on-populus-deltoids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107969.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">125</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3177</span> Simulation of the Impact of Street Tree Species on the Urban Microclimate: A Case Study of El-Houria Neighborhood in Mostaganem, Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Nora">Bachir Nora</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Integrating vegetation into urban environments is crucial for enhancing quality of life, particularly through microclimate regulation and the reduction of urban heat islands. This study investigates the impact of different street tree species on the urban microclimate in the El-Houria neighborhood of Mostaganem, Algeria, using the ENVI-met software for advanced environmental simulations. it focused on three tree species—Robinia pseudo-acacia, Populus alba, and Jacaranda mimosifolia—to evaluate their effectiveness in influencing key meteorological parameters, including air temperature, mean radiant temperature, surface temperature, and the predicted percentage of dissatisfied (PPD) thermal comfort index. Statistical analyses were conducted to compare these parameters across different tree species, ensuring the robustness of our findings. Our results indicate that Robinia pseudo-acacia is the most effective species, capable of reducing air temperature by up to 1°C and surface temperature by up to 12°C. These findings underscore the importance of strategically selecting tree species to mitigate the effects of climate change, improve thermal comfort, and reduce energy consumption in urban settings. The study offers valuable insights for urban planners and policymakers, providing practical guidance for sustainable urban design practices tailored to the Algerian context. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20islands" title="heat islands">heat islands</a>, <a href="https://publications.waset.org/abstracts/search?q=microclimate%20simulation" title=" microclimate simulation"> microclimate simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=street%20tree%20alignment" title=" street tree alignment"> street tree alignment</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20urban%20design" title=" sustainable urban design"> sustainable urban design</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort." title=" thermal comfort."> thermal comfort.</a> </p> <a href="https://publications.waset.org/abstracts/189371/simulation-of-the-impact-of-street-tree-species-on-the-urban-microclimate-a-case-study-of-el-houria-neighborhood-in-mostaganem-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/189371.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">29</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3176</span> Tea and Its Working Methodology in the Biomass Estimation of Poplar Species</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pratima%20Poudel">Pratima Poudel</a>, <a href="https://publications.waset.org/abstracts/search?q=Austin%20Himes"> Austin Himes</a>, <a href="https://publications.waset.org/abstracts/search?q=Heidi%20Renninger"> Heidi Renninger</a>, <a href="https://publications.waset.org/abstracts/search?q=Eric%20McConnel"> Eric McConnel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Populus spp. (poplar) are the fastest-growing trees in North America, making them ideal for a range of applications as they can achieve high yields on short rotations and regenerate by coppice. Furthermore, poplar undergoes biochemical conversion to fuels without complexity, making it one of the most promising, purpose-grown, woody perennial energy sources. Employing wood-based biomass for bioenergy offers numerous benefits, including reducing greenhouse gas (GHG) emissions compared to non-renewable traditional fuels, the preservation of robust forest ecosystems, and creating economic prospects for rural communities.In order to gain a better understanding of the potential use of poplar as a biomass feedstock for biofuel in the southeastern US, the conducted a techno-economic assessment (TEA). This assessment is an analytical approach that integrates technical and economic factors of a production system to evaluate its economic viability. the TEA specifically focused on a short rotation coppice system employing a single-pass cut-and-chip harvesting method for poplar. It encompassed all the costs associated with establishing dedicated poplar plantations, including land rent, site preparation, planting, fertilizers, and herbicides. Additionally, we performed a sensitivity analysis to evaluate how different costs can affect the economic performance of the poplar cropping system. This analysis aimed to determine the minimum average delivered selling price for one metric ton of biomass necessary to achieve a desired rate of return over the cropping period. To inform the TEA, data on the establishment, crop care activities, and crop yields were derived from a field study conducted at the Mississippi Agricultural and Forestry Experiment Station's Bearden Dairy Research Center in Oktibbeha County and Pontotoc Ridge-Flatwood Branch Experiment Station in Pontotoc County. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass" title="biomass">biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=populus%20species" title=" populus species"> populus species</a>, <a href="https://publications.waset.org/abstracts/search?q=sensitivity%20analysis" title=" sensitivity analysis"> sensitivity analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=technoeconomic%20analysis" title=" technoeconomic analysis"> technoeconomic analysis</a> </p> <a href="https://publications.waset.org/abstracts/173333/tea-and-its-working-methodology-in-the-biomass-estimation-of-poplar-species" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173333.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">83</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3175</span> Mechanical Properties of Aspen Wood of Structural Dimensions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Barbora%20Herdov%C3%A1">Barbora Herdová</a>, <a href="https://publications.waset.org/abstracts/search?q=Rastislav%20Laga%C5%88a"> Rastislav Lagaňa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper investigates the mechanical properties of European aspen (Populus tremula L.) as a potential replacement for load-bearing elements in historical structures. One of the main aims of the research has been the quantification of mechanical properties via destructive testing and the subsequent calculation of characteristic values of these properties. The research encompasses experimental testing of wood specimens for the determination of dynamic modulus of elasticity (MOEdyn), modulus of elasticity (MOE), modulus of rupture (MOR), and density. The results were analyzed and compared to established standards for structural timber. The results confirmed statistically significant dependence between MOR and MOEdyn. The correlation between the MOR and the dynamic MOEdyn enabled non-destructive strength grading using the Sylvatest Duo® system. The findings of this research contribute to the potential use of European aspen as a structural timber, which could have implications for the sustainable use of this abundant and renewable resource in the construction industry. They also show the usability of European aspen in the reconstruction of historical buildings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=populus%20tremula" title="populus tremula">populus tremula</a>, <a href="https://publications.waset.org/abstracts/search?q=MOE" title=" MOE"> MOE</a>, <a href="https://publications.waset.org/abstracts/search?q=MOR" title=" MOR"> MOR</a>, <a href="https://publications.waset.org/abstracts/search?q=sylvatest%20Duo%C2%AE." title=" sylvatest Duo®."> sylvatest Duo®.</a> </p> <a href="https://publications.waset.org/abstracts/179309/mechanical-properties-of-aspen-wood-of-structural-dimensions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179309.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">64</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3174</span> Metabolic Profiling of Populus trichocarpa Family 1 UDP-Glycosyltransferases</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Patricia%20M.%20B.%20Saint-Vincent">Patricia M. B. Saint-Vincent</a>, <a href="https://publications.waset.org/abstracts/search?q=Anna%20Furches"> Anna Furches</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephanie%20Galanie"> Stephanie Galanie</a>, <a href="https://publications.waset.org/abstracts/search?q=Erica%20Teixeira%20Prates"> Erica Teixeira Prates</a>, <a href="https://publications.waset.org/abstracts/search?q=Piet%20Jones"> Piet Jones</a>, <a href="https://publications.waset.org/abstracts/search?q=Nancy%20Engle"> Nancy Engle</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20Kainer"> David Kainer</a>, <a href="https://publications.waset.org/abstracts/search?q=Wellington%20Muchero"> Wellington Muchero</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Jacobson"> Daniel Jacobson</a>, <a href="https://publications.waset.org/abstracts/search?q=Timothy%20J.%20Tschaplinski"> Timothy J. Tschaplinski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Uridine diphosphate-glycosyltransferases (UGTs) are enzymes that catalyze sugar transfer to a variety of plant metabolites. UGT substrates, which include plant secondary metabolites involved in lignification, demonstrate new activities and incorporation when glycosylated. Knowledge of UGT function, substrate specificity, and enzyme products is important for plant engineering efforts, especially related to increasing plant biomass through lignification. UGTs in Populus trichocarpa, a biofuel feedstock, and model woody plant, were selected from a pool of gene candidates using rapid prioritization strategies. A functional genomics workflow, consisting of a metabolite genome-wide association study (mGWAS), expression of synthetic codon-optimized genes, and high-throughput biochemical assays with mass spectrometry-based analysis, was developed for determining the substrates and products of previously-uncharacterized enzymes. A total of 40 UGTs from P. trichocarpa were profiled, and the biochemical assay results were compared to predicted mGWAS connections. Assay results confirmed seven of 11 leaf mGWAS associations and demonstrated varying levels of substrate specificity among candidate UGTs. P. trichocarpa UGT substrate processing confirms the role of these newly-characterized enzymes in lignan, flavonoid, and phytohormone metabolism, with potential implications for cell wall biosynthesis, nitrogen uptake, and biotic and abiotic stress responses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Populus" title="Populus">Populus</a>, <a href="https://publications.waset.org/abstracts/search?q=metabolite-gene%20associations" title=" metabolite-gene associations"> metabolite-gene associations</a>, <a href="https://publications.waset.org/abstracts/search?q=GWAS" title=" GWAS"> GWAS</a>, <a href="https://publications.waset.org/abstracts/search?q=bio%20feedstocks" title=" bio feedstocks"> bio feedstocks</a>, <a href="https://publications.waset.org/abstracts/search?q=glycosyltransferase" title=" glycosyltransferase"> glycosyltransferase</a> </p> <a href="https://publications.waset.org/abstracts/155204/metabolic-profiling-of-populus-trichocarpa-family-1-udp-glycosyltransferases" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155204.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">114</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3173</span> Microbiological Analysis of Soil from Onu-Ebonyi Contaminated with Inorganic Fertilizer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20N.%20Alo">M. N. Alo</a>, <a href="https://publications.waset.org/abstracts/search?q=U.%20C.%20C.%20Egbule"> U. C. C. Egbule</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20O.%20Orji"> J. O. Orji</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20J.%20Aneke"> C. J. Aneke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Microbiological analysis of soil from Onu-Ebonyi Izzi local government area of Ebonyi State, Nigeria contaminated with inorganic fertilizer was carried out with a view to determine the effect of the fertilizer on the microbial flora of the soil. soil samples were analyzed for microbial burden. the result showed that the following organisms were isolated with their frequency of their occurrence as follows:pseudomonas species (33.3%) and aspergillus species (54.4%) had the highest frequncy of occurence in the whole sample of batches, while streptococcus species had 6.0% and Geotrichum species (5.3%) had the least and other predominant microorganism isolated: bacillus species,staphylococcus species and vibrio species, Escherichia species, rhzizopus species, mucor species and fusaruim species. From the result, it could be concluded that the soil was contaminated and this could affect adversely the fertility of the soil . <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soil" title="soil">soil</a>, <a href="https://publications.waset.org/abstracts/search?q=bacteria" title=" bacteria"> bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=fungi" title=" fungi"> fungi</a>, <a href="https://publications.waset.org/abstracts/search?q=inorganic%20fertilizer" title=" inorganic fertilizer"> inorganic fertilizer</a>, <a href="https://publications.waset.org/abstracts/search?q=Onu-%20Ebonyi" title=" Onu- Ebonyi "> Onu- Ebonyi </a> </p> <a href="https://publications.waset.org/abstracts/15269/microbiological-analysis-of-soil-from-onu-ebonyi-contaminated-with-inorganic-fertilizer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15269.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">512</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3172</span> A Predator-Prey Model with Competitive Interaction amongst the Preys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Titus%20G.%20Kassem">Titus G. Kassem</a>, <a href="https://publications.waset.org/abstracts/search?q=Izang%20A.%20Nyam"> Izang A. Nyam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A mathematical model is constructed to study the effect of predation on two competing species in which one of the competing species is a prey to the predator whilst the other species are not under predation. Conditions for the existence and stability of equilibrium solutions were determined. Numerical simulation results indicate the possibility of a stable coexistence of the three interacting species in form of stable oscillations under certain parameter values. We also noticed that under some certain parameter values, species under predation go into extinction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=competition" title="competition">competition</a>, <a href="https://publications.waset.org/abstracts/search?q=predator-prey" title=" predator-prey"> predator-prey</a>, <a href="https://publications.waset.org/abstracts/search?q=species" title=" species"> species</a>, <a href="https://publications.waset.org/abstracts/search?q=ecology" title=" ecology"> ecology</a> </p> <a href="https://publications.waset.org/abstracts/5979/a-predator-prey-model-with-competitive-interaction-amongst-the-preys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5979.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">278</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3171</span> Butterfly Diversity along Urban-Rural Gradient in Kolkata, India</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sushmita%20Chaudhuri">Sushmita Chaudhuri</a>, <a href="https://publications.waset.org/abstracts/search?q=Parthiba%20Basu"> Parthiba Basu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Urbanization leads to habitat degradation and is responsible for the fast disappearance of native butterfly species. Random sampling of rural, suburban and urban sites in an around Kolkata metropolis revealed the presence of 28 species of butterfly belonging to 5 different families in winter (February-March). Butterfly diversity, species richness and abundance decreased with increase in urbanization. Psyche (Leptosia nina of family Pieridae) was the most predominant butterfly species found everywhere in Kolkata during the winter period. The most dominant family was Nymphalidae (11species), followed by Pieridae (6 species), Lycaenidae (5 species), Papilionidae (4 species) and Hesperiidae (2 species). The rural and suburban sites had butterfly species that were unique to those sites. Vegetation cover and flowering shrub density were significantly related to butterfly diversity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=butterfly" title="butterfly">butterfly</a>, <a href="https://publications.waset.org/abstracts/search?q=Kolkata%20metropolis" title=" Kolkata metropolis"> Kolkata metropolis</a>, <a href="https://publications.waset.org/abstracts/search?q=Shannon-Weiner%20diversity%20index" title=" Shannon-Weiner diversity index"> Shannon-Weiner diversity index</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20diversity" title=" species diversity"> species diversity</a> </p> <a href="https://publications.waset.org/abstracts/52028/butterfly-diversity-along-urban-rural-gradient-in-kolkata-india" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52028.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">289</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3170</span> Computing the Similarity and the Diversity in the Species Based on Cronobacter Genome</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20Al%20Daoud">E. Al Daoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of computing the similarity and the diversity in the species is to trace the process of evolution and to find the relationship between the species and discover the unique, the special, the common and the universal proteins. The proteins of the whole genome of 40 species are compared with the cronobacter genome which is used as reference genome. More than 3 billion pairwise alignments are performed using blastp. Several findings are introduced in this study, for example, we found 172 proteins in cronobacter genome which have insignificant hits in other species, 116 significant proteins in the all tested species with very high score value and 129 common proteins in the plants but have insignificant hits in mammals, birds, fishes, and insects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=genome" title="genome">genome</a>, <a href="https://publications.waset.org/abstracts/search?q=species" title=" species"> species</a>, <a href="https://publications.waset.org/abstracts/search?q=blastp" title=" blastp"> blastp</a>, <a href="https://publications.waset.org/abstracts/search?q=conserved%20genes" title=" conserved genes"> conserved genes</a>, <a href="https://publications.waset.org/abstracts/search?q=Cronobacter" title=" Cronobacter"> Cronobacter</a> </p> <a href="https://publications.waset.org/abstracts/82396/computing-the-similarity-and-the-diversity-in-the-species-based-on-cronobacter-genome" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82396.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">496</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3169</span> Subtidal Crabs of Oman Sea: New Collections and Biogeographic Considerations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Negar%20Ghotbeddin">Negar Ghotbeddin</a>, <a href="https://publications.waset.org/abstracts/search?q=Seied%20Mohammad%20Reza%20Fatemi"> Seied Mohammad Reza Fatemi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tooraj%20Valinassab"> Tooraj Valinassab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The samplings were carried out at 8 stations (Govatr, Pasabandar, Beriss, Ramin, Chabahar, Pozm, Gordim, and Meidani) in subtidal zones of Oman Sea during the year 2009-2010. The specimens were collected by trawl net and preserved in 70% alcohol. A total of 23 species belonged to 9 families and 15 genera were caught. The results of the present study revealed that families Portunidae had the highest species enriched with 9 species. Most of the species had high distribution in the west Indian Ocean (69.56%) and 8.69% of species were endemic. Almost species were similar to those found in the Persian Gulf. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Brachyura" title="Brachyura">Brachyura</a>, <a href="https://publications.waset.org/abstracts/search?q=biogeography" title=" biogeography"> biogeography</a>, <a href="https://publications.waset.org/abstracts/search?q=subtidal" title=" subtidal"> subtidal</a>, <a href="https://publications.waset.org/abstracts/search?q=Oman%20Sea" title=" Oman Sea"> Oman Sea</a> </p> <a href="https://publications.waset.org/abstracts/30543/subtidal-crabs-of-oman-sea-new-collections-and-biogeographic-considerations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30543.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">588</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3168</span> Palyno-Morphological Characteristics of Gymnosperm Flora of Pakistan and Its Taxonomic Implications with Light Microscope and Scanning Electron Microscopy Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raees%20Khan">Raees Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sheikh%20Z.%20Ul%20Abidin"> Sheikh Z. Ul Abidin</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdul%20S.%20Mumtaz"> Abdul S. Mumtaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Jie%20Liu"> Jie Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study is intended to assess gymnosperms pollen flora of Pakistan using Light Microscope (LM) and Scanning Electron Microscopy (SEM) for its taxonomic significance in identification of gymnosperms. Pollens of 35 gymnosperm species (12 genera and five families) were collected from its various distributional sites of gymnosperms in Pakistan. LM and SEM were used to investigate different palyno-morphological characteristics. Five pollen types (i.e., Inaperturate, Monolete, Monoporate, Vesiculate-bisaccate, and Polyplicate) were observed. In equatorial view seven types of pollens were observed, in which ten species were sub-angular, nine species were triangular, six species were perprolate, three species were rhomboidal, three species were semi-angular, two species were rectangular and two species were prolate. While five types of pollen were observed in polar view, in which ten species were spheroidal, nine species were angular, eight were interlobate, six species were circular, and two species were elliptic. Eighteen species have rugulate and 17 species has faveolate ornamentation. Eighteen species have verrucate and 17 have gemmate type sculpturing. The data was analysed through cluster analysis. The study showed that these palyno-morphological features have significance value in classification and identification of gymnosperms. Based on these different palyno-morphological features, a taxonomic key was proposed for the accurate and fast identifications of gymnosperms from Pakistan. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gymnosperms" title="gymnosperms">gymnosperms</a>, <a href="https://publications.waset.org/abstracts/search?q=palynology" title=" palynology"> palynology</a>, <a href="https://publications.waset.org/abstracts/search?q=Pakistan" title=" Pakistan"> Pakistan</a>, <a href="https://publications.waset.org/abstracts/search?q=taxonomy" title=" taxonomy"> taxonomy</a> </p> <a href="https://publications.waset.org/abstracts/82016/palyno-morphological-characteristics-of-gymnosperm-flora-of-pakistan-and-its-taxonomic-implications-with-light-microscope-and-scanning-electron-microscopy-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82016.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">221</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3167</span> Devising a Paradigm for the Assessment of Guilt across Species</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Trisha%20S.%20Malhotra">Trisha S. Malhotra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> While there exist frameworks to study the induction, manifestation, duration and general nature of emotions like shame, guilt, embarrassment and pride in humans, the same cannot be said for other species. This is because such 'complex' emotions have situational inductions and manifestations that supposedly vary due to differences between and within different species' ethology. This paper looks at the socio-adaptive functions of guilt to posit why this emotion might be observed across varying species. Primarily, the experimental paradigm of guilt-assessment in domesticated dogs is critiqued for lack of ethological consideration in its measurement and analysis. It is argued that a paradigm for guilt-assessment should measure the species-specific prosocial approach behavior instead of the immediate feedback of the 'guilty'. Finally, it is asserted that the origin of guilt is subjective and if it must be studied across a plethora of species, its definition must be tailored to fit accordingly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=guilt" title="guilt">guilt</a>, <a href="https://publications.waset.org/abstracts/search?q=assessment" title=" assessment"> assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=dogs" title=" dogs"> dogs</a>, <a href="https://publications.waset.org/abstracts/search?q=prosocial%20approach%20behavior" title=" prosocial approach behavior"> prosocial approach behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=empathy" title=" empathy"> empathy</a>, <a href="https://publications.waset.org/abstracts/search?q=species" title=" species"> species</a>, <a href="https://publications.waset.org/abstracts/search?q=ethology" title=" ethology"> ethology</a> </p> <a href="https://publications.waset.org/abstracts/104123/devising-a-paradigm-for-the-assessment-of-guilt-across-species" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104123.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">307</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3166</span> Diversity of Bird Species and Conservation of Two Lacustrine Wetlands of the Upper Benue Basin, Adamawa, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20l.%20David"> D. l. David</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20A.%20Wahedi"> J. A. Wahedi</a>, <a href="https://publications.waset.org/abstracts/search?q=U.%20Buba"> U. Buba</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Zakariya"> R. Zakariya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Between January, 2004 to December, 2005, studies were carried out on the bird species diversity and relative abundance of two lakes, Kiri and Gyawana near Numan using the “Timed Species Count (TSC)” method. 163 species in 53 bird families and 160 species in 55 bird families were recorded at Kiri and Gyawana lakes respectively. There was no significant difference in species diversity within bird families between the two lakes (p > 0.05), whereas in Gyawana Lake, one of the sites qualified as Ramsar site, none strongly qualified as an Important Bird Area (IBA). The significance of these findingsare also discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conservation" title="conservation">conservation</a>, <a href="https://publications.waset.org/abstracts/search?q=diversity" title=" diversity"> diversity</a>, <a href="https://publications.waset.org/abstracts/search?q=lacustrine" title=" lacustrine"> lacustrine</a>, <a href="https://publications.waset.org/abstracts/search?q=wetlands" title=" wetlands"> wetlands</a> </p> <a href="https://publications.waset.org/abstracts/35316/diversity-of-bird-species-and-conservation-of-two-lacustrine-wetlands-of-the-upper-benue-basin-adamawa-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35316.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">682</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3165</span> Artemisia Species from Iran as Valuable Resources for Medicinal Uses</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Reza%20Naghavi">Mohammad Reza Naghavi</a>, <a href="https://publications.waset.org/abstracts/search?q=Farzad%20Alaeimoghadam"> Farzad Alaeimoghadam</a>, <a href="https://publications.waset.org/abstracts/search?q=Hossein%20Ghafoori"> Hossein Ghafoori</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Artemisia species, which are medically beneficial, are widespread in temperate regions of both Northern and Southern hemispheres among which Iran is located. About 35 species of Artemisia are indigenous in Iran among them some are widespread in all or most provinces, yet some are restricted to some specific regions. In this review paper, initially, GC-Mass results of some experiments done in different provinces of Iran are mentioned among them some compounds are common among species, some others are mostly restricted to other species; after that, medical advantages based on some researches on species of this genus are reviewed; different qualities such as anti-leishmania, anti-bacteria, antiviral as well as anti-proliferative could be mentioned. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artemisia" title="artemisia">artemisia</a>, <a href="https://publications.waset.org/abstracts/search?q=GC-Mass%20analysis" title=" GC-Mass analysis"> GC-Mass analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=medical%20advantage" title=" medical advantage"> medical advantage</a>, <a href="https://publications.waset.org/abstracts/search?q=antiviral" title=" antiviral "> antiviral </a> </p> <a href="https://publications.waset.org/abstracts/13738/artemisia-species-from-iran-as-valuable-resources-for-medicinal-uses" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13738.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">547</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3164</span> Species Composition of Alticinae Newman, 1834 (Coleoptera, Chrysomelidae): Distribution and Host Plants in Eastern Upper Plains (Setif, Algeria)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Bounechada">M. Bounechada</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Fenni"> M. Fenni</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Bouharati"> S. Bouharati</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20E.%20Doumandji"> S. E. Doumandji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study was taken in Setif region (36° 11' 29 N and 5° 24' 34 E) located at the north-eastern of Algeria. This paper recorded and discusses zoogeography and host plant relationships of Setifian species Alticinae subfamily. A total of 50 species belonging to Alticinae subfamily of Chrysomelidae which is the economically important familty, were recorded from differentes localities of Setif region. They are included in 10 genera. Genera Longitarsus Berthold, 1827 is less species-rich than the other Alticinae genera captured. It represens about 38% of the all species collected. Cruciferae and Compositae were the mostly prefered host plant families representing Alticinae species. For each species we mentioned the collecting sites, geographical distribution and the host plants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Algeria" title="Algeria">Algeria</a>, <a href="https://publications.waset.org/abstracts/search?q=Alticinae" title=" Alticinae"> Alticinae</a>, <a href="https://publications.waset.org/abstracts/search?q=Chrysomelidae" title=" Chrysomelidae"> Chrysomelidae</a>, <a href="https://publications.waset.org/abstracts/search?q=Coleoptera" title=" Coleoptera"> Coleoptera</a>, <a href="https://publications.waset.org/abstracts/search?q=distribution" title=" distribution"> distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=host%20plants" title=" host plants"> host plants</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20composition" title=" species composition"> species composition</a>, <a href="https://publications.waset.org/abstracts/search?q=Setif" title=" Setif"> Setif</a> </p> <a href="https://publications.waset.org/abstracts/13440/species-composition-of-alticinae-newman-1834-coleoptera-chrysomelidae-distribution-and-host-plants-in-eastern-upper-plains-setif-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13440.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">234</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3163</span> A Faunistic Comparative Study of Families Hesperiidae and Nymphalidae (Lepidoptera: Rhopalocera) of Syrian Arab Republic and Republic of Armenia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Zarikian">N. Zarikian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Comparative analysis of the fauna of two families of butterflies (Lepidoptera: Rhopalocera) – Hesperiidae and Nymphalidae were carried out. In general, 122 species of the families are recorded. among these 33 species belong to Hesperiidae and 89 to Nymphalidae. The numbers by countries are as follows: 72 species are found in Syria (including 24 Hesperiidae and 48 Nymphalidae) and 97 in Armenia (26 and 71 species, respectively). Two species of Hesperiidae are reported for Syrian fauna for the first time and one species is newly recorded for Armenia. From the species above mentioned 38 are common both for Syria and Armenia. For estimation of the similarity of faunas studied were used the Jaccard index. By families the index is rather different, consisting for Hesperiidae 0.5151 and for Nymphalidae 0.337. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Armenia" title="Armenia">Armenia</a>, <a href="https://publications.waset.org/abstracts/search?q=fauna" title=" fauna"> fauna</a>, <a href="https://publications.waset.org/abstracts/search?q=Hesperiidae" title=" Hesperiidae"> Hesperiidae</a>, <a href="https://publications.waset.org/abstracts/search?q=Nymphalidae" title=" Nymphalidae"> Nymphalidae</a>, <a href="https://publications.waset.org/abstracts/search?q=%28Rhopalocera%3A%20Lepidoptera%29" title=" (Rhopalocera: Lepidoptera)"> (Rhopalocera: Lepidoptera)</a>, <a href="https://publications.waset.org/abstracts/search?q=Syria" title=" Syria"> Syria</a> </p> <a href="https://publications.waset.org/abstracts/48129/a-faunistic-comparative-study-of-families-hesperiidae-and-nymphalidae-lepidoptera-rhopalocera-of-syrian-arab-republic-and-republic-of-armenia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48129.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">252</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3162</span> Improved Rare Species Identification Using Focal Loss Based Deep Learning Models</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chad%20Goldsworthy">Chad Goldsworthy</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Rajeswari%20Matam"> B. Rajeswari Matam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of deep learning for species identification in camera trap images has revolutionised our ability to study, conserve and monitor species in a highly efficient and unobtrusive manner, with state-of-the-art models achieving accuracies surpassing the accuracy of manual human classification. The high imbalance of camera trap datasets, however, results in poor accuracies for minority (rare or endangered) species due to their relative insignificance to the overall model accuracy. This paper investigates the use of Focal Loss, in comparison to the traditional Cross Entropy Loss function, to improve the identification of minority species in the “255 Bird Species” dataset from Kaggle. The results show that, although Focal Loss slightly decreased the accuracy of the majority species, it was able to increase the F1-score by 0.06 and improve the identification of the bottom two, five and ten (minority) species by 37.5%, 15.7% and 10.8%, respectively, as well as resulting in an improved overall accuracy of 2.96%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=convolutional%20neural%20networks" title="convolutional neural networks">convolutional neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20imbalance" title=" data imbalance"> data imbalance</a>, <a href="https://publications.waset.org/abstracts/search?q=deep%20learning" title=" deep learning"> deep learning</a>, <a href="https://publications.waset.org/abstracts/search?q=focal%20loss" title=" focal loss"> focal loss</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20classification" title=" species classification"> species classification</a>, <a href="https://publications.waset.org/abstracts/search?q=wildlife%20conservation" title=" wildlife conservation"> wildlife conservation</a> </p> <a href="https://publications.waset.org/abstracts/132442/improved-rare-species-identification-using-focal-loss-based-deep-learning-models" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/132442.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">191</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3161</span> Features in the Distribution of Fleas (Siphonaptera) in the Balkhash-Alakol Depression on the South-Eastern Kazakhstan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nurtazin%20Sabir">Nurtazin Sabir</a>, <a href="https://publications.waset.org/abstracts/search?q=Begon%20Michael"> Begon Michael</a>, <a href="https://publications.waset.org/abstracts/search?q=Yeszhanov%20Aidyn"> Yeszhanov Aidyn</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Belyaev"> Alexander Belyaev</a>, <a href="https://publications.waset.org/abstracts/search?q=Hughes%20Nelika"> Hughes Nelika</a>, <a href="https://publications.waset.org/abstracts/search?q=Bethany%20Levick"> Bethany Levick</a>, <a href="https://publications.waset.org/abstracts/search?q=Salmurzauly%20Ruslan"> Salmurzauly Ruslan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper describes the features of the distribution of the most abundant species of fleas that are carriers of the most dangerous infections in the Balkhash-Alakol depression of Kazakhstan. We show that of 153 species of fleas described in the territory of the great gerbil (Rhombomys opimus Licht.), 35 species are parasitic. 21 of them are specific to gerbils species, and four species of fleas from the Xenopsylla genus are dominant in number and value of epizootic. We also describe the modern features of habitats of these species and their relationship with the great gerbil populations found in the South Balkhash region. It indicates the need for research on the population structure of the most abundant fleas species and their relationship with the structure of the populations of main carrier of transmission infections in the region-great gerbil. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Balkhash-Alakol%20depression" title="Balkhash-Alakol depression">Balkhash-Alakol depression</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20foci%20of%20plague" title=" natural foci of plague"> natural foci of plague</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20diversity%20and%20distribution%20of%20fleas" title=" species diversity and distribution of fleas"> species diversity and distribution of fleas</a>, <a href="https://publications.waset.org/abstracts/search?q=flea%20and%20great%20gerbil%20population%20structure" title=" flea and great gerbil population structure"> flea and great gerbil population structure</a>, <a href="https://publications.waset.org/abstracts/search?q=epizootic%20activity" title=" epizootic activity"> epizootic activity</a>, <a href="https://publications.waset.org/abstracts/search?q=mass%20species%20of%20fleas" title=" mass species of fleas"> mass species of fleas</a> </p> <a href="https://publications.waset.org/abstracts/27346/features-in-the-distribution-of-fleas-siphonaptera-in-the-balkhash-alakol-depression-on-the-south-eastern-kazakhstan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27346.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">444</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3160</span> Diversity and Distribution of Benthic Invertebrates in the West Port, Malaysia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyedeh%20Belin%20Tavakoly%20Sany">Seyedeh Belin Tavakoly Sany</a>, <a href="https://publications.waset.org/abstracts/search?q=Rosli%20Hashim"> Rosli Hashim</a>, <a href="https://publications.waset.org/abstracts/search?q=Majid%20Rezayi"> Majid Rezayi</a>, <a href="https://publications.waset.org/abstracts/search?q=Aishah%20Salleh"> Aishah Salleh</a>, <a href="https://publications.waset.org/abstracts/search?q=Omid%20Safari"> Omid Safari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this paper is to describe the main characteristics of macroinvertebrate species in response to environmental forcing factors. Overall, 23 species of Mollusca, 4 species of Arthropods, 3 species of Echinodermata and 3 species of Annelida were identified at the 9 sampling stations during four sampling periods. Individual species of Mollusca constituted 36.4% of the total abundance, followed by Arthropods (27.01%), Annelida (34.3%) and Echinodermata (2.4%). The results of Kruskal-Wallis test indicated that a significant difference (p <0.05) in the abundance, richness and diversity of the macro-benthic community in different stations. The correlation analysis revealed that anthropogenic pollution and natural variability caused by these variations in spatial scales. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=benthic%20invertebrates" title="benthic invertebrates">benthic invertebrates</a>, <a href="https://publications.waset.org/abstracts/search?q=diversity" title=" diversity"> diversity</a>, <a href="https://publications.waset.org/abstracts/search?q=abundance" title=" abundance"> abundance</a>, <a href="https://publications.waset.org/abstracts/search?q=West%20Port" title=" West Port"> West Port</a> </p> <a href="https://publications.waset.org/abstracts/6112/diversity-and-distribution-of-benthic-invertebrates-in-the-west-port-malaysia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6112.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">441</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3159</span> Inverted Diameter-Limit Thinning: A Promising Alternative for Mixed Populus tremuloides Stands Management</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ablo%20Paul%20Igor%20Hounzandji">Ablo Paul Igor Hounzandji</a>, <a href="https://publications.waset.org/abstracts/search?q=Benoit%20Lafleur"> Benoit Lafleur</a>, <a href="https://publications.waset.org/abstracts/search?q=Annie%20DesRochers"> Annie DesRochers</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Populus tremuloides [Michx] regenerates rapidly and abundantly by root suckering after harvest, creating stands with interconnected stems. Pre-commercial thinning can be used to concentrate growth on fewer stems to reach merchantability faster than un-thinned stands. However, conventional thinning methods are typically designed to reach even spacing between residual stems (1,100 stem ha⁻¹, evenly distributed), which can lead to treated stands consisting of weaker/smaller stems compared to the original stands. Considering the nature of P. tremuloides's regeneration, with large underground biomass of interconnected roots, aiming to keep the most vigorous and largest stems, regardless of their spatial distribution, inverted diameter-limit thinning could be more beneficial to post-thinning stand productivity because it would reduce the imbalance between roots and leaf area caused by thinning. Aims: This study aimed to compare stand and stem productivity of P. tremuloides stands thinned with a conventional thinning treatment (CT; 1,100 stem ha⁻¹, evenly distributed), two levels of inverted diameter-limit thinning (DL1 and DL2, keeping the largest 1100 or 2200 stems ha⁻¹, respectively, regardless of their spatial distribution) and a control unthinned treatment. Because DL treatments can create substantial or frequent gaps in the thinned stands, we also aimed to evaluate the potential of this treatment to recreate mixed conifer-broadleaf stands by fill-planting Picea glauca seedlings. Methods: Three replicate 21 year-old sucker-regenerated aspen stands were thinned in 2010 according to four treatments: CT, DL1, DL2, and un-thinned control. Picea glauca seedlings were underplanted in gaps created by the DL1 and DL2 treatments. Stand productivity per hectare, stem quality (diameter and height, volume stem⁻¹) and survival and height growth of fill-planted P. glauca seedlings were measured 8 year post-treatments. Results: Productivity, volume, diameter, and height were better in the treated stands (CT, DL1, and DL2) than in the un-thinned control. Productivity of CT and DL1 stands was similar 4.8 m³ ha⁻¹ year⁻¹. At the tree level, diameter and height of the trees in the DL1 treatment were 5% greater than those in the CT treatment. The average volume of trees in the DL1 treatment was 11% higher than the CT treatment. Survival after 8 years of fill planted P. glauca seedlings was 2% greater in the DL1 than in the DL2 treatment. DL1 treatment also produced taller seedlings (+20 cm). Discussion: Results showed that DL treatments were effective in producing post-thinned stands with larger stems without affecting stand productivity. In addition, we showed that these treatments were suitable to introduce slower growing conifer seedlings such as Picea glauca in order to re-create or maintain mixed stands despite the aggressive nature of P. tremuloides sucker regeneration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aspen" title="Aspen">Aspen</a>, <a href="https://publications.waset.org/abstracts/search?q=inverted%20diameter-limit" title=" inverted diameter-limit"> inverted diameter-limit</a>, <a href="https://publications.waset.org/abstracts/search?q=mixed%20forest" title=" mixed forest"> mixed forest</a>, <a href="https://publications.waset.org/abstracts/search?q=populus%20tremuloides" title=" populus tremuloides"> populus tremuloides</a>, <a href="https://publications.waset.org/abstracts/search?q=silviculture" title=" silviculture"> silviculture</a>, <a href="https://publications.waset.org/abstracts/search?q=thinning" title=" thinning"> thinning</a> </p> <a href="https://publications.waset.org/abstracts/120220/inverted-diameter-limit-thinning-a-promising-alternative-for-mixed-populus-tremuloides-stands-management" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120220.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">141</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3158</span> Species Diversity and Relative Abundance of Migratory Waterbirds in Abijata Lake, Central Rift Valley, Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Teklebrhan%20Kidane">Teklebrhan Kidane </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study is to investigate the species diversity and relative abundance of migratory waterbirds in Abijata Lake, an Important Bird Area and potential Ramsar site located in the Central Rift Valley of Ethiopia. The study was carried out, using line transect method along the shoreline and open area of the Lake. The data was analyzed with different diversity indices; t-Test and descriptive statistics. Thirty-two migratory waterbird species grouped into twelve families consisting of globally threatened birds were identified and recorded. Family Scolopacidae (12 species) had the highest number of species. The lowest number of species was observed under the families Ciconidae, Accipitridae, Laridae and Falconidae with one species each. The recorded bird species comprised 19 Palearctic, 5 Intra-African, 2 local migrants as well as 6 resident Palearctic migratory waterbird species. The dry season had higher species diversity (H'=1.01) compared to the wet season (H'=0.76). The highest and lowest diversity of migratory waterbirds were recorded during January (H'= 1.28) and June (H'= 0.52), respectively. However, the highest evenness (E) of bird species was recorded during wet season (E=0.21) and lower during the dry season (E=0.09). The computed seasonal effect reveals that there is significant effect of seasons on species diversity (t=2.80, P < 0.05), but the effect of seasons on individuals of migratory bird species was not significant (t=1.42, P > 0.05). Even though Lake Abijata is the sanctuary of several migratory waterbirds, anthropogenic activities are rigorously threatening their survival. Therefore, it needs an urgent conservation concern. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=migration" title="migration">migration</a>, <a href="https://publications.waset.org/abstracts/search?q=important%20bird%20area" title=" important bird area"> important bird area</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20diversity" title=" species diversity"> species diversity</a>, <a href="https://publications.waset.org/abstracts/search?q=wetland%20birds" title=" wetland birds "> wetland birds </a> </p> <a href="https://publications.waset.org/abstracts/96761/species-diversity-and-relative-abundance-of-migratory-waterbirds-in-abijata-lake-central-rift-valley-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96761.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">202</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3157</span> The Efficiency of Cytochrome Oxidase Subunit 1 Gene (cox1) in Reconstruction of Phylogenetic Relations among Some Crustacean Species</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yasser%20M.%20Saad">Yasser M. Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20El-Sebaie%20Abd%20El-Sadek"> Heba El-Sebaie Abd El-Sadek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Some <em>Metapenaeus monoceros</em><em> cox1</em> gene fragments were isolated, purified, sequenced, and comparatively analyzed with some other Crustacean <em>Cox1</em> gene sequences (obtained from National Center for Biotechnology Information). This work was designed for testing the efficiency of this system in reconstruction of phylogenetic relations among some Crustacean species belonging to four genera (Metapenaeus, Artemia, Daphnia and Calanus)<em>.</em> The single nucleotide polymorphism and haplotype diversity were calculated for all estimated mt-DNA fragments. The genetic distance values were 0.292, 0.015, 0.151, and 0.09 within <em>Metapenaeus </em>species<em>, Calanus</em> species<em>, Artemia</em> species, and<em> Daphnia</em> species, respectively<em>. </em>The reconstructed phylogenetic tree is clustered into some unique clades. Cytochrome oxidase subunit 1 gene (<em>cox1</em>) was a powerful system in reconstruction of phylogenetic relations among evaluated crustacean species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crustaceans" title="crustaceans">crustaceans</a>, <a href="https://publications.waset.org/abstracts/search?q=genetics" title=" genetics"> genetics</a>, <a href="https://publications.waset.org/abstracts/search?q=Cox1" title=" Cox1"> Cox1</a>, <a href="https://publications.waset.org/abstracts/search?q=phylogeny" title=" phylogeny"> phylogeny</a> </p> <a href="https://publications.waset.org/abstracts/73884/the-efficiency-of-cytochrome-oxidase-subunit-1-gene-cox1-in-reconstruction-of-phylogenetic-relations-among-some-crustacean-species" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73884.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">362</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3156</span> Rapid Inventory of Terrestrial Ferns and Lycopods in Center for Ecological Development and Recreation (Cedar), Impalutao, Impasug-Ong Bukidnon, Philippines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Diobein%20Flores">Diobein Flores</a>, <a href="https://publications.waset.org/abstracts/search?q=Venus%20Buagas"> Venus Buagas</a>, <a href="https://publications.waset.org/abstracts/search?q=Virgie%20Darunday"> Virgie Darunday</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study inventoried the species composition of terrestrial ferns and lycopods in Center for Ecological Development and Recreation (CEDAR) Impalutao, Impasug-ong, Bukidnon. Specifically, it aimed to determine and describe the species composition, and diagnostic characters of the ferns and lycopods in the study site. Transect walk method was employed in the inventory of the species. Each species were classified, identified and described according to its diagnostic characters. Results of the study revealed a total of 20 species of ferns and lycopods. Of these, 18 species were ferns and 2 species were lycopods. Eleven (11) families and fifteen (15) genera for ferns and one (1) family and one (1) genera for lycopods. Psomiocarpa apifolia is Philippine endemic and said to be vulnerable or threatened. Taxonomic characters based on habit, rhizome, leaf arrangement and orientation, stem structure and circinate vernation were used to identify the terrestrial pteridophtyes into families, genera and species. The species collected and assessment in CEDAR should be further investigated and monitor their conservation status. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha%20taxonomy" title="alpha taxonomy">alpha taxonomy</a>, <a href="https://publications.waset.org/abstracts/search?q=conservation" title=" conservation"> conservation</a>, <a href="https://publications.waset.org/abstracts/search?q=habit" title=" habit"> habit</a>, <a href="https://publications.waset.org/abstracts/search?q=taxonomic%20characters" title=" taxonomic characters"> taxonomic characters</a> </p> <a href="https://publications.waset.org/abstracts/56000/rapid-inventory-of-terrestrial-ferns-and-lycopods-in-center-for-ecological-development-and-recreation-cedar-impalutao-impasug-ong-bukidnon-philippines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56000.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">222</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3155</span> Plant Species Composition and Frequency Distribution Along a Disturbance Gradient in Kano Metropolis Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamisu%20Jibril">Hamisu Jibril</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study explores changes in plant species composition along disturbance gradient in urban areas in Nigeria at Bayero University Kano campuses. The aim is to assess changes in plant species composition and distribution within a degraded dryland environment in Kano Metropolis, Nigeria. Vegetation sampling was conducted using plots quadrat and transect methods, and different plant species were identified in the three study sites. Data were analyzed using ANOVA, t-tests and conventional indices to compare species richness, evenness and diversity. The study found no significant differences in species frequency among sites or sampling methods but observed higher species richness, evenness and diversity values in grasses species compared to trees. The study addressed changes in plant species composition along a disturbance gradient in an urban environment, focusing on species richness, evenness, and diversity. The study contributes to understanding the vegetation dynamics in degraded urban environments and highlights the need for conservation efforts. The research also adds to the existing literature by confirming previous findings and suggesting re-planting efforts. The study suggests similarities in plant species composition between old and new campus areas and emphasizes the importance of further investigating factors leading to vegetation loss for conservation purposes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=species%20diversity" title="species diversity">species diversity</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20kano" title=" urban kano"> urban kano</a>, <a href="https://publications.waset.org/abstracts/search?q=dryland%20environment" title=" dryland environment"> dryland environment</a>, <a href="https://publications.waset.org/abstracts/search?q=vegetation%20sampling" title=" vegetation sampling"> vegetation sampling</a> </p> <a href="https://publications.waset.org/abstracts/184510/plant-species-composition-and-frequency-distribution-along-a-disturbance-gradient-in-kano-metropolis-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184510.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">60</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3154</span> Ants of the Genus Trichomyrmex Mayr, 1865 (Hymenoptera: Formicidae) in the Arabian Peninsula, with Description of Two New Species</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20R.%20Sharaf">Mostafa R. Sharaf</a>, <a href="https://publications.waset.org/abstracts/search?q=Shehzad%20Salman"> Shehzad Salman</a>, <a href="https://publications.waset.org/abstracts/search?q=Hathal%20M.%20Al%20Dhafer"> Hathal M. Al Dhafer</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahid%20A.%20Akbar"> Shahid A. Akbar</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdulrahman%20S.%20Aldawood"> Abdulrahman S. Aldawood</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The ant genus Trichomyrmex Mayr is revised for the Arabian Peninsula based on the worker caste. Nine species are recognized and descriptions of two new species, T. almosayari sp. n. and T. shakeri sp. n. from Riyadh Province, the Kingdom of Saudi Arabia (KSA) are given. A key to species and diagnostic characters of the treated species are presented. New country records are presented, T. abyssinicus (Forel) for the KSA and T. destructor (Jerdon) and T. mayri (Forel) for the State of Qatar. New distribution records for T. destructor (Jerdon) and T. mayri (Forel) in the KSA are provided. Regional and world distributions, and distribution maps for the treated species are included. Ecological and biological data are given where known. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ants" title="ants">ants</a>, <a href="https://publications.waset.org/abstracts/search?q=Trichomyrmex" title=" Trichomyrmex"> Trichomyrmex</a>, <a href="https://publications.waset.org/abstracts/search?q=Arabian%20Peninsula" title=" Arabian Peninsula"> Arabian Peninsula</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20almosayari" title=" T. almosayari"> T. almosayari</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20shakeri" title=" T. shakeri"> T. shakeri</a> </p> <a href="https://publications.waset.org/abstracts/47451/ants-of-the-genus-trichomyrmex-mayr-1865-hymenoptera-formicidae-in-the-arabian-peninsula-with-description-of-two-new-species" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47451.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">347</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3153</span> DNA Barcoding of Tree Endemic Campanula Species From Artvi̇n, Türki̇ye</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hayal%20Akyildirim%20Be%C4%9Fen">Hayal Akyildirim Beğen</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%96zg%C3%BCr%20Emi%CC%87na%C4%9Fao%C4%9Flu"> Özgür Emi̇nağaoğlu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> DNA barcoding is the method of description of species based on gene diversity. In current studies, registration, genetic identification and protection of especially endemic plants pecies are carried out by DNA barcoding techniques. Molecular studies are based on the amplification and sequencing of the barcode gene region by the PCR method. Endemic Campanula choruhensis Kit Tan & Sorger, Campanula troegera Damboldt and Campanula betulifolia K.Koch is widespread in Artvin, Erzurum and around Çoruh valley passing through it. Intense road and dam constructions are carried out in and around the distribution area of this species. This situation harms the habitat of the species and puts its extinction. In this study, the plastid matK barcode gene regions (650 bp) of three Campanula species were created. To make the identification of this species quickly and accurately, gene sequence compared with sequences of other Campanula L. species. As a result of phylogenetic analysis, C. choruhensis is close relative to C. betulifolia. Morphologically, these species were determined to be more similar to each other with flower and leaf characters. C. troegera formed a separate branch. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=campanula" title="campanula">campanula</a>, <a href="https://publications.waset.org/abstracts/search?q=DNA%20barcoding" title=" DNA barcoding"> DNA barcoding</a>, <a href="https://publications.waset.org/abstracts/search?q=endemic" title=" endemic"> endemic</a>, <a href="https://publications.waset.org/abstracts/search?q=t%C3%BCrkiye" title=" türkiye"> türkiye</a>, <a href="https://publications.waset.org/abstracts/search?q=artvin" title=" artvin"> artvin</a> </p> <a href="https://publications.waset.org/abstracts/171316/dna-barcoding-of-tree-endemic-campanula-species-from-artvin-turkiye" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171316.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">68</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3152</span> The Role of Physically Adsorbing Species of Oxyhydryl Reagents in Flotation Aggregate Formation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Kondratyev">S. A. Kondratyev</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20I.%20Ibragimova"> O. I. Ibragimova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The authors discuss the collecting abilities of desorbable species (DS) of saturated fatty acids. The DS species of the reagent are understood as species capable of moving from the surface of the mineral particle to the bubble at the moment of the rupture of the interlayer of liquid separating these objects of interaction. DS species of carboxylic acids (molecules and ionic-molecular complexes) have the ability to spread over the surface of the bubble. The rate of their spreading at pH 7 and 10 over the water surface is determined. The collectibility criterion of saturated fatty acids is proposed. The values of forces exerted by the spreading DS species of reagents on liquid in the interlayer and the liquid flow rate from the interlayer are determined. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=criterion%20of%20action%20of%20physically%20adsorbed%20reagent" title="criterion of action of physically adsorbed reagent">criterion of action of physically adsorbed reagent</a>, <a href="https://publications.waset.org/abstracts/search?q=flotation" title=" flotation"> flotation</a>, <a href="https://publications.waset.org/abstracts/search?q=saturated%20fatty%20acids" title=" saturated fatty acids"> saturated fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20pressure" title=" surface pressure"> surface pressure</a> </p> <a href="https://publications.waset.org/abstracts/76153/the-role-of-physically-adsorbing-species-of-oxyhydryl-reagents-in-flotation-aggregate-formation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76153.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">222</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3151</span> Bioinformatics Analysis of DGAT1 Gene in Domestic Ruminnants</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sirous%20Eydivandi">Sirous Eydivandi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Diacylglycerol-O-acyltransferase (DGAT1) gene encodes diacylglycerol transferase enzyme that plays an important role in glycerol lipid metabolism. DGAT1 is considered to be the key enzyme in controlling the synthesis of triglycerides in adipocytes. This enzyme catalyzes the final step of triglyceride synthesis (transform triacylglycerol (DAG) into triacylglycerol (TAG). A total of 20 DGAT1 gene sequences and corresponding amino acids belonging to 4 species include cattle, goats, sheep and yaks were analyzed, and the differentiation within and among the species was also studied. The length of the DGAT1 gene varies greatly, from 1527 to 1785 bp, due to deletion, insertion, and stop codon mutation resulting in elongation. Observed genetic diversity was higher among species than within species, and Goat had more polymorphisms than any other species. Novel amino acid variation sites were detected within several species which might be used to illustrate the functional variation. Differentiation of the DGAT1 gene was obvious among species, and the clustering result was consistent with the taxonomy in the National Center for Biotechnology Information. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DGAT1gene" title="DGAT1gene">DGAT1gene</a>, <a href="https://publications.waset.org/abstracts/search?q=bioinformatic" title=" bioinformatic"> bioinformatic</a>, <a href="https://publications.waset.org/abstracts/search?q=ruminnants" title=" ruminnants"> ruminnants</a>, <a href="https://publications.waset.org/abstracts/search?q=biotechnology%20information" title=" biotechnology information"> biotechnology information</a> </p> <a href="https://publications.waset.org/abstracts/29456/bioinformatics-analysis-of-dgat1-gene-in-domestic-ruminnants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29456.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">491</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=populus%20species&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=populus%20species&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=populus%20species&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=populus%20species&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=populus%20species&page=6">6</a></li> <li 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