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Rheotaxis - Wikipedia

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Available in 10 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-10" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">10 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A7%D9%86%D8%AC%D8%B0%D8%A7%D8%A8_%D8%B9%D9%83%D8%B3%D9%8A" title="انجذاب عكسي – Arabic" lang="ar" hreflang="ar" data-title="انجذاب عكسي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Rheotaxis" title="Rheotaxis – German" lang="de" hreflang="de" data-title="Rheotaxis" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Reotaksis" title="Reotaksis – Estonian" lang="et" hreflang="et" data-title="Reotaksis" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Reotaxis" title="Reotaxis – Spanish" lang="es" hreflang="es" data-title="Reotaxis" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Rh%C3%A9otaxie" title="Rhéotaxie – French" lang="fr" hreflang="fr" data-title="Rhéotaxie" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Reotaktismo" title="Reotaktismo – Ido" lang="io" hreflang="io" data-title="Reotaktismo" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Reotaksja" title="Reotaksja – Polish" lang="pl" hreflang="pl" data-title="Reotaksja" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Reotaxia" title="Reotaxia – Portuguese" lang="pt" hreflang="pt" data-title="Reotaxia" 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item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button 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class="cite-bracket">&#91;</span>1<span class="cite-bracket">&#93;</span></a></sup> e.g., <a href="/wiki/Fish" title="Fish">fish</a>, whereby they will (generally) turn to face into an oncoming <a href="/wiki/Current_(stream)" class="mw-redirect" title="Current (stream)">current</a>. In a flowing <a href="/wiki/Stream" title="Stream">stream</a>, this behavior leads them to hold their position rather than being swept downstream by the current. Rheotaxis has been noted in <a href="/wiki/Zebrafish" title="Zebrafish">zebrafish</a> and other species,<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup> and is found in most major <a href="/wiki/Aquatic_invertebrate" class="mw-redirect" title="Aquatic invertebrate">aquatic invertebrate</a> groups.<sup id="cite_ref-:0_3-0" class="reference"><a href="#cite_note-:0-3"><span class="cite-bracket">&#91;</span>3<span class="cite-bracket">&#93;</span></a></sup> Rheotaxis is important for animal survival because the positioning of an animal in the water can increase its chance of accessing food and lower the amount of energy it spends, especially when it remains stationary.<sup id="cite_ref-Elder2015_1-1" class="reference"><a href="#cite_note-Elder2015-1"><span class="cite-bracket">&#91;</span>1<span class="cite-bracket">&#93;</span></a></sup> Some organisms such as <a href="/wiki/Eel" title="Eel">eels</a> will exhibit <b>negative rheotaxis</b> where they will turn away from and avoid oncoming currents.<sup id="cite_ref-:1_4-0" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">&#91;</span>4<span class="cite-bracket">&#93;</span></a></sup> This action is a part of their tendency to want to migrate.<sup id="cite_ref-:1_4-1" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">&#91;</span>4<span class="cite-bracket">&#93;</span></a></sup> Some <a href="/wiki/Zooplankton" title="Zooplankton">zooplankton</a> also exhibit positive or negative rheotaxis.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">&#91;</span>5<span class="cite-bracket">&#93;</span></a></sup> </p><p>In fish, the <a href="/wiki/Lateral_line" title="Lateral line">lateral line system</a> is used to determine changes in the oncoming flow pattern of a body of water, and the corresponding orientation of the animal toward or away from the current.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">&#91;</span>6<span class="cite-bracket">&#93;</span></a></sup> The lateral line sensory system consists of <a href="/wiki/Mechanosensation" title="Mechanosensation">mechanosensory</a> hair cells that detect the movement of water.<sup id="cite_ref-:0_3-1" class="reference"><a href="#cite_note-:0-3"><span class="cite-bracket">&#91;</span>3<span class="cite-bracket">&#93;</span></a></sup> Animals can also use rheotaxis in conjunction with other methods to orient themselves in the water. For example, <a href="/wiki/Sea_lamprey" title="Sea lamprey">sea lamprey</a> will use the flow of the current to identify upstream chemical stimuli, and position themselves towards the direction of the signal.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">&#91;</span>7<span class="cite-bracket">&#93;</span></a></sup> </p><p>Rheotaxis is also a phenomenon seen in small scale artificial systems. Recently, it was observed that certain <a href="/wiki/Self-propelled_particles" title="Self-propelled particles">self-propelled particles</a> (gold-platinum nanorods) will rheotax and reorient themselves against the flow in small microfluidic channels.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">&#91;</span>8<span class="cite-bracket">&#93;</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rheotaxis&amp;action=edit&amp;section=1" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Elder2015-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Elder2015_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Elder2015_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFElderCoombs2015" class="citation journal cs1">Elder, John; Coombs, Sheryl (21 May 2015). 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class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible uncollapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="General_components_and_freshwater_ecosystems" style="font-size:114%;margin:0 4em">General components and <a href="/wiki/Freshwater_ecosystem" title="Freshwater ecosystem">freshwater ecosystems</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">General</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acoustic_ecology" title="Acoustic ecology">Acoustic ecology</a></li> <li><a href="/wiki/Algal_bloom" title="Algal bloom">Algal bloom</a></li> <li><a href="/wiki/Anoxic_waters" title="Anoxic waters">Anoxic waters</a></li> <li><a href="/wiki/Aquatic_adaptation" class="mw-redirect" title="Aquatic adaptation">Aquatic adaptation</a></li> <li><a href="/wiki/Aquatic_animal" title="Aquatic animal">Aquatic animal</a> <ul><li><a href="/wiki/Aquatic_insect" title="Aquatic insect">Insect</a></li> <li><a href="/wiki/Aquatic_mammal" title="Aquatic mammal">Mammal</a></li> <li><a href="/wiki/Water_bird" title="Water bird">Water bird</a></li></ul></li> <li><a href="/wiki/Aquatic_biomonitoring" title="Aquatic biomonitoring">Aquatic biomonitoring</a></li> <li><a href="/wiki/Aquatic_plant" title="Aquatic plant">Aquatic plant</a></li> <li><a href="/wiki/Agent-based_model_in_biology#Aquatic_population_dynamics" title="Agent-based model in biology">Aquatic population dynamics</a></li> <li><a href="/wiki/Aquatic_predation" class="mw-redirect" title="Aquatic predation">Aquatic predation</a></li> <li><a href="/wiki/Aquatic_respiration" title="Aquatic respiration">Aquatic respiration</a></li> <li><a href="/wiki/Aquatic_science" title="Aquatic science">Aquatic science</a></li> <li><a href="/wiki/Aquatic_toxicology" title="Aquatic toxicology">Aquatic toxicology</a></li> <li><a href="/wiki/Benthos" title="Benthos">Benthos</a></li> <li><a href="/wiki/Bioluminescence" title="Bioluminescence">Bioluminescence</a></li> <li><a href="/wiki/Biomass_(ecology)" title="Biomass (ecology)">Biomass</a></li> <li><a href="/wiki/Cascade_effect_(ecology)" title="Cascade effect (ecology)">Cascade effect</a></li> <li><a href="/wiki/Colored_dissolved_organic_matter" title="Colored dissolved organic matter">Colored dissolved organic matter</a></li> <li><a href="/wiki/Dead_zone_(ecology)" title="Dead zone (ecology)">Dead zone</a></li> <li><a href="/wiki/Ecohydrology" title="Ecohydrology">Ecohydrology</a></li> <li><a href="/wiki/Eutrophication" title="Eutrophication">Eutrophication</a></li> <li><a href="/wiki/Fisheries_science" title="Fisheries science">Fisheries science</a></li> <li><a href="/wiki/Food_chain" title="Food chain">Food chain</a></li> <li><a href="/wiki/Food_web" title="Food web">Food web</a></li> <li><a href="/wiki/GIS_and_aquatic_science" title="GIS and aquatic science">GIS and aquatic science</a></li> <li><a href="/wiki/Hydrobiology" title="Hydrobiology">Hydrobiology</a></li> <li><a href="/wiki/Hypoxia_(environmental)" title="Hypoxia (environmental)">Hypoxia</a></li> <li><a href="/wiki/Macrobenthos" title="Macrobenthos">Macrobenthos</a></li> <li><a href="/wiki/Meiobenthos" title="Meiobenthos">Meiobenthos</a></li> <li><a href="/wiki/Microbial_ecology" title="Microbial ecology">Microbial ecology</a></li> <li><a href="/wiki/Microbial_food_web" title="Microbial food web">Microbial food web</a></li> <li><a href="/wiki/Microbial_loop" title="Microbial loop">Microbial loop</a></li> <li><a href="/wiki/Nekton" title="Nekton">Nekton</a></li> <li><a href="/wiki/Neuston" title="Neuston">Neuston</a></li> <li><a href="/wiki/Particle_(ecology)" title="Particle (ecology)">Particle</a></li> <li><a href="/wiki/Pelagic_zone" title="Pelagic zone">Pelagic zone</a></li> <li><a href="/wiki/Photic_zone" title="Photic zone">Photic zone</a></li> <li><a href="/wiki/Phytoplankton" title="Phytoplankton">Phytoplankton</a></li> <li><a href="/wiki/Plankton" title="Plankton">Plankton</a></li> <li><a href="/wiki/Pleuston" class="mw-redirect" title="Pleuston">Pleuston</a></li> <li><a href="/wiki/Productivity_(ecology)" title="Productivity (ecology)">Productivity</a></li> <li><a href="/wiki/Ramsar_Convention" title="Ramsar Convention">Ramsar Convention</a></li> <li><a href="/wiki/Sediment_trap" title="Sediment trap">Sediment trap</a></li> <li><a href="/wiki/Shoaling_and_schooling" title="Shoaling and schooling">Shoaling and schooling</a></li> <li><a href="/wiki/Siltation" title="Siltation">Siltation</a></li> <li><a href="/wiki/Spawn_(biology)" class="mw-redirect" title="Spawn (biology)">Spawn</a></li> <li><a href="/wiki/Isotope_analysis#Stable_isotope_analysis_in_aquatic_ecosystems" title="Isotope analysis">Stable isotope analysis in aquatic ecosystems</a></li> <li><a href="/wiki/Substrate_(marine_biology)" class="mw-redirect" title="Substrate (marine biology)">Substrate</a></li> <li><a href="/wiki/Thermal_pollution" title="Thermal pollution">Thermal pollution</a></li> <li><a href="/wiki/Trophic_level" title="Trophic level">Trophic level</a></li> <li><a href="/wiki/Underwater_camouflage" title="Underwater camouflage">Underwater camouflage</a></li> <li><a href="/wiki/Water_column" title="Water column">Water column</a></li> <li><a href="/wiki/Zooplankton" title="Zooplankton">Zooplankton</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="3" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Aerial_view_of_Slapton_Sands_and_northern_part_of_Ley_-_geograph.org.uk_-_1434412.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Aerial_view_of_Slapton_Sands_and_northern_part_of_Ley_-_geograph.org.uk_-_1434412.jpg/140px-Aerial_view_of_Slapton_Sands_and_northern_part_of_Ley_-_geograph.org.uk_-_1434412.jpg" decoding="async" width="140" height="202" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Aerial_view_of_Slapton_Sands_and_northern_part_of_Ley_-_geograph.org.uk_-_1434412.jpg/210px-Aerial_view_of_Slapton_Sands_and_northern_part_of_Ley_-_geograph.org.uk_-_1434412.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Aerial_view_of_Slapton_Sands_and_northern_part_of_Ley_-_geograph.org.uk_-_1434412.jpg/280px-Aerial_view_of_Slapton_Sands_and_northern_part_of_Ley_-_geograph.org.uk_-_1434412.jpg 2x" data-file-width="382" data-file-height="551" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Freshwater</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Freshwater_biology" title="Freshwater biology">Freshwater biology</a></li> <li><a href="/wiki/Freshwater_biome" class="mw-redirect" title="Freshwater biome">Freshwater biome</a></li> <li><a href="/wiki/Freshwater_environmental_quality_parameters" title="Freshwater environmental quality parameters">Freshwater environmental quality parameters</a></li> <li><a href="/wiki/Freshwater_fish" title="Freshwater fish">Freshwater fish</a></li> <li><a href="/wiki/Hyporheic_zone" title="Hyporheic zone">Hyporheic zone</a></li> <li><a href="/wiki/Limnology" title="Limnology">Limnology</a></li> <li><a href="/wiki/Lake_ecosystem" title="Lake ecosystem">Lake ecosystem</a></li> <li><a href="/wiki/Lake_stratification" title="Lake stratification">Lake stratification</a></li> <li><a href="/wiki/Macrophyte" class="mw-redirect" title="Macrophyte">Macrophyte</a></li> <li><a href="/wiki/Pond" title="Pond">Pond</a> <ul><li><a href="/wiki/Fish_pond" title="Fish pond">Fish pond</a></li></ul></li> <li><a class="mw-selflink selflink">Rheotaxis</a></li> <li><a href="/wiki/River_ecosystem" title="River ecosystem">River ecosystem</a></li> <li><a href="/wiki/Stream_bed" title="Stream bed">Stream bed</a></li> <li><a href="/wiki/Stream_pool" title="Stream pool">Stream pool</a></li> <li><a href="/wiki/Trophic_state_index" title="Trophic state index">Trophic state index</a></li> <li><a href="/wiki/Upland_and_lowland" title="Upland and lowland">Upland and lowland</a></li> <li><a href="/wiki/Water_garden" title="Water garden">Water garden</a></li> <li><a href="/wiki/Wetland" title="Wetland">Wetland</a> <ul><li><a href="/wiki/Bog" title="Bog">Bog</a></li> <li><a href="/wiki/Brackish_marsh" title="Brackish marsh">Brackish marsh</a></li> <li><a href="/wiki/Fen" title="Fen">Fen</a></li> <li><a href="/wiki/Freshwater_marsh" title="Freshwater marsh">Freshwater marsh</a></li> <li><a href="/wiki/Freshwater_swamp_forest" title="Freshwater swamp forest">Freshwater swamp forest</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Ecoregions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_freshwater_ecoregions_(WWF)" title="List of freshwater ecoregions (WWF)">List of freshwater ecoregions (WWF)</a> <ul><li><a href="/wiki/List_of_freshwater_ecoregions_in_Africa_and_Madagascar" title="List of freshwater ecoregions in Africa and Madagascar">Africa and Madagascar</a></li> <li><a href="/wiki/List_of_freshwater_ecoregions_of_Latin_America_and_the_Caribbean" title="List of freshwater ecoregions of Latin America and the Caribbean">Latin America and the Caribbean</a></li></ul></li> <li><a href="/wiki/List_of_marine_ecoregions" title="List of marine ecoregions">List of marine ecoregions</a></li> <li>Specific examples <ul><li><a href="/wiki/Geography_and_ecology_of_the_Everglades" title="Geography and ecology of the Everglades">Everglades</a></li> <li><a href="/wiki/Freshwater_ecology_of_Maharashtra" title="Freshwater ecology of Maharashtra">Maharashtra</a></li> <li><a href="/wiki/Ecosystem_of_the_North_Pacific_Subtropical_Gyre" title="Ecosystem of the North Pacific Subtropical Gyre">North Pacific Subtropical Gyre</a></li> <li><a href="/wiki/Ecology_of_the_San_Francisco_Estuary" title="Ecology of the San Francisco Estuary">San Francisco Estuary</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Marine_ecosystems" style="font-size:114%;margin:0 4em"><a href="/wiki/Marine_ecosystem" title="Marine ecosystem">Marine ecosystems</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">General</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Deep_scattering_layer" title="Deep scattering layer">Deep scattering layer</a></li> <li><a href="/wiki/Diel_vertical_migration" title="Diel vertical migration">Diel vertical migration</a></li> <li><a href="/wiki/F-ratio_(oceanography)" title="F-ratio (oceanography)">f-ratio</a></li> <li><a href="/wiki/Iron_fertilization" title="Iron fertilization">Iron fertilization</a></li> <li><a href="/wiki/Large_marine_ecosystem" class="mw-redirect" title="Large marine ecosystem">Large marine ecosystem</a></li> <li><a href="/wiki/Marine_biology" title="Marine biology">Marine biology</a></li> <li><a href="/wiki/Marine_chemistry" title="Marine chemistry">Marine chemistry</a></li> <li><a href="/wiki/Marine_food_web" title="Marine food web">Marine food web</a></li> <li><a href="/wiki/Marine_primary_production" title="Marine primary production">Marine primary production</a></li> <li><a href="/wiki/Marine_snow" title="Marine snow">Marine snow</a></li> <li><a href="/wiki/Ocean_fertilization" title="Ocean fertilization">Ocean fertilization</a></li> <li><a href="/wiki/Oceanic_physical-biological_process" title="Oceanic physical-biological process">Oceanic physical-biological process</a></li> <li><a href="/wiki/Ocean_turbidity" title="Ocean turbidity">Ocean turbidity</a></li> <li><a href="/wiki/Photophore" title="Photophore">Photophore</a></li> <li><a href="/wiki/Thorson%27s_rule" title="Thorson&#39;s rule">Thorson's rule</a></li> <li><a href="/wiki/Upwelling" title="Upwelling">Upwelling</a></li> <li><a href="/wiki/Viral_shunt" title="Viral shunt">Viral shunt</a></li> <li><a href="/wiki/Whale_fall" title="Whale fall">Whale fall</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Maldivesfish2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/35/Maldivesfish2.jpg/140px-Maldivesfish2.jpg" decoding="async" width="140" height="95" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/35/Maldivesfish2.jpg/210px-Maldivesfish2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/35/Maldivesfish2.jpg/280px-Maldivesfish2.jpg 2x" data-file-width="1818" data-file-height="1228" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Marine_life" title="Marine life">Marine life</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Census_of_Marine_Life" title="Census of Marine Life">Census of Marine Life</a></li> <li><a href="/wiki/Deep-sea_community" title="Deep-sea community">Deep-sea community</a></li> <li><a href="/wiki/Deep-water_coral" title="Deep-water coral">Deep-water coral</a></li> <li><a href="/wiki/Marine_fungi" title="Marine fungi">Marine fungi</a></li> <li><a href="/wiki/Marine_invertebrates" title="Marine invertebrates">Marine invertebrates</a></li> <li><a href="/wiki/Marine_larval_ecology" title="Marine larval ecology">Marine larval ecology</a></li> <li><a href="/wiki/Seagrass" title="Seagrass">Seagrass</a></li> <li><a href="/wiki/Seashore_wildlife" title="Seashore wildlife">Seashore wildlife</a></li> <li><a href="/wiki/Wild_fisheries" title="Wild fisheries">Wild fisheries</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Marine_microorganisms" title="Marine microorganisms">Microorganisms</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Marine_bacteriophage" class="mw-redirect" title="Marine bacteriophage">Marine bacteriophage</a></li> <li><a href="/wiki/Marine_prokaryotes" title="Marine prokaryotes">Marine prokaryotes</a></li> <li><a href="/wiki/Marine_protists" title="Marine protists">Marine protists</a></li> <li><a href="/wiki/Marine_viruses" title="Marine viruses">Marine viruses</a></li> <li><a href="/wiki/Paradox_of_the_plankton" title="Paradox of the plankton">Paradox of the plankton</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Marine_vertebrate" title="Marine vertebrate">Vertebrates</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Marine_mammal" title="Marine mammal">Marine mammal</a></li> <li><a href="/wiki/Marine_reptile" title="Marine reptile">Marine reptile</a></li> <li><a href="/wiki/Saltwater_fish" title="Saltwater fish">Saltwater fish</a> <ul><li><a href="/wiki/Coastal_fish" title="Coastal fish">Coastal fish</a></li> <li><a href="/wiki/Coral_reef_fish" title="Coral reef fish">Coral reef fish</a></li> <li><a href="/wiki/Deep-sea_fish" title="Deep-sea fish">Deep-sea fish</a></li> <li><a href="/wiki/Demersal_fish" title="Demersal fish">Demersal fish</a></li> <li><a href="/wiki/Pelagic_fish" title="Pelagic fish">Pelagic fish</a></li></ul></li> <li><a href="/wiki/Seabird" title="Seabird">Seabird</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Marine_habitat" title="Marine habitat">Marine habitats</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bay_mud" title="Bay mud">Bay mud</a></li> <li><a href="/wiki/Marine_coastal_ecosystem" title="Marine coastal ecosystem">Marine coastal ecosystem</a></li> <li><a href="/wiki/Coastal_biogeomorphology" title="Coastal biogeomorphology">Coastal biogeomorphology</a></li> <li><a href="/wiki/Cold_seep" title="Cold seep">Cold seep</a></li> <li><a href="/wiki/Coral_reef" title="Coral reef">Coral reef</a></li> <li><a href="/wiki/Davidson_Seamount#Ecology" title="Davidson Seamount">Davidson Seamount § Ecology</a></li> <li><a href="/wiki/Estuary" title="Estuary">Estuary</a></li> <li><a href="/wiki/Intertidal_ecology" title="Intertidal ecology">Intertidal ecology</a></li> <li><a href="/wiki/Intertidal_wetland" title="Intertidal wetland">Intertidal wetland</a></li> <li><a href="/wiki/Kelp_forest" title="Kelp forest">Kelp forest</a></li> <li><a href="/wiki/Hydrothermal_vent" title="Hydrothermal vent">Hydrothermal vent</a></li> <li><a href="/wiki/Lagoon" title="Lagoon">Lagoon</a></li> <li><a href="/wiki/Mangrove" title="Mangrove">Mangrove</a></li> <li><a href="/wiki/Marine_biomes" class="mw-redirect" title="Marine biomes">Marine biomes</a></li> <li><a href="/wiki/Mudflat" title="Mudflat">Mudflat</a></li> <li><a href="/wiki/Oyster_reef" title="Oyster reef">Oyster reef</a></li> <li><a href="/wiki/Rocky_shore" title="Rocky shore">Rocky shore</a></li> <li><a href="/wiki/Salt_marsh" title="Salt marsh">Salt marsh</a></li> <li><a href="/wiki/Salt_pannes_and_pools" title="Salt pannes and pools">Salt pannes and pools</a></li> <li><a href="/wiki/Seagrass_meadow" title="Seagrass meadow">Seagrass meadow</a></li> <li><a href="/wiki/Sponge_ground" title="Sponge ground">Sponge ground</a></li> <li><a href="/wiki/Sponge_reef" title="Sponge reef">Sponge reef</a></li> <li><a href="/wiki/Tide_pool" title="Tide pool">Tide pool</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Marine_conservation" title="Marine conservation">Conservation</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Coral_bleaching" title="Coral bleaching">Coral bleaching</a></li> <li><a href="/wiki/Ecological_values_of_mangroves" title="Ecological values of mangroves">Ecological values of mangroves</a></li> <li><a href="/wiki/Fisheries_and_climate_change" class="mw-redirect" title="Fisheries and climate change">Fisheries and climate change</a></li> <li><a href="/wiki/Hotspot_Ecosystem_Research_and_Man%27s_Impact_On_European_Seas" title="Hotspot Ecosystem Research and Man&#39;s Impact On European Seas">HERMIONE</a></li> <li><a href="/wiki/Human_impact_on_marine_life" title="Human impact on marine life">Human impact on marine life</a></li> <li><a href="/wiki/Marine_conservation_activism" title="Marine conservation activism">Marine conservation activism</a></li> <li><a href="/wiki/Marine_pollution" title="Marine pollution">Marine pollution</a></li> <li><a href="/wiki/Marine_protected_area" title="Marine protected area">Marine protected area</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="nowrap"><span class="nowrap"><span class="noviewer" typeof="mw:File"><span><img alt="image" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Walden_Pond%2C_Massachusetts_on_June_27%2C_2012.png/16px-Walden_Pond%2C_Massachusetts_on_June_27%2C_2012.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Walden_Pond%2C_Massachusetts_on_June_27%2C_2012.png/24px-Walden_Pond%2C_Massachusetts_on_June_27%2C_2012.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Walden_Pond%2C_Massachusetts_on_June_27%2C_2012.png/32px-Walden_Pond%2C_Massachusetts_on_June_27%2C_2012.png 2x" data-file-width="1500" data-file-height="1500" /></span></span> </span><a href="/wiki/Portal:Lakes" title="Portal:Lakes">Lakes&#32;portal</a></span></li> <li><span class="nowrap"><span class="nowrap"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Waves_in_pacifica_1.jpg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/45/Waves_in_pacifica_1.jpg/16px-Waves_in_pacifica_1.jpg" decoding="async" width="16" height="11" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/45/Waves_in_pacifica_1.jpg/24px-Waves_in_pacifica_1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/45/Waves_in_pacifica_1.jpg/32px-Waves_in_pacifica_1.jpg 2x" data-file-width="2000" data-file-height="1358" /></a></span> </span><a href="/wiki/Portal:Oceans" title="Portal:Oceans">Oceans&#32;portal</a></span></li> <li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Aquatic_ecology" title="Category:Aquatic ecology">Category</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Types_of_taxes_(directional_movements_in_biology)" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Taxes_(biology)" title="Template:Taxes (biology)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Taxes_(biology)" title="Template talk:Taxes (biology)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Taxes_(biology)" title="Special:EditPage/Template:Taxes (biology)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Types_of_taxes_(directional_movements_in_biology)" style="font-size:114%;margin:0 4em">Types of <a href="/wiki/Taxis" title="Taxis">taxes</a> (directional movements in biology)</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Aerotaxis" title="Aerotaxis">Aerotaxis</a></i> (stimulation by <a href="/wiki/Oxygen" title="Oxygen">oxygen</a>)</li> <li><i>Anemotaxis</i> (by <a href="/wiki/Wind" title="Wind">wind</a>)</li> <li><i>Barotaxis</i> (by <a href="/wiki/Pressure" title="Pressure">pressure</a>)</li> <li><i><a href="/wiki/Chemotaxis" title="Chemotaxis">Chemotaxis</a></i> (by <a href="/wiki/Chemical" class="mw-redirect" title="Chemical">chemicals</a>)</li> <li><i><a href="/wiki/Durotaxis" title="Durotaxis">Durotaxis</a></i> (by <a href="/wiki/Stiffness" title="Stiffness">stiffness</a>)</li> <li><i>Electrotaxis</i> or <i>Galvanotaxis</i> (by <a href="/wiki/Electric_current" title="Electric current">electric current</a>)</li> <li><i><a href="/wiki/Gravitaxis" title="Gravitaxis">Gravitaxis</a></i> (by <a href="/wiki/Gravity" title="Gravity">gravity</a>)</li> <li><i>Hydrotaxis</i> (by <a href="/wiki/Moisture" title="Moisture">moisture</a>)</li> <li><i><a href="/wiki/Magnetotaxis" title="Magnetotaxis">Magnetotaxis</a></i> (by <a href="/wiki/Magnetic_field" title="Magnetic field">magnetic field</a>)</li> <li><i><a href="/wiki/Phototaxis" title="Phototaxis">Phototaxis</a></i> (by <a href="/wiki/Light" title="Light">light</a>)</li> <li><i><a class="mw-selflink selflink">Rheotaxis</a></i> (by <a href="/wiki/Fluid_flow" class="mw-redirect" title="Fluid flow">fluid flow</a>)</li> <li><i><a href="/wiki/Thermotaxis" title="Thermotaxis">Thermotaxis</a></i> (by changes in <a href="/wiki/Temperature" title="Temperature">temperature</a>)</li> <li><i>Thigmotaxis</i> (by <a href="/wiki/Somatosensory_system" title="Somatosensory system">physical contact</a>)</li></ul> 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