Bulletin of the Plankton Society of Japan

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collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 67 (2020)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/67/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 67 (2020) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/67/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 43-"> Issue 2 Pages 43- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/67/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 66 (2019)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/66/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 66 (2019) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/66/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 59-"> Issue 2 Pages 59- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/66/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 65 (2018)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/65/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 65 (2018) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/65/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 35-"> Issue 2 Pages 35- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/65/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 64 (2017)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/64/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 64 (2017) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/64/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 113-"> Issue 2 Pages 113- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/64/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 63 (2016)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/63/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 63 (2016) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/63/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 45-"> Issue 2 Pages 45- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/63/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 62 (2015)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/62/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 62 (2015) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/62/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 97-"> Issue 2 Pages 97- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/62/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 61 (2014)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/61/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 61 (2014) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/61/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 121-"> Issue 2 Pages 121- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/61/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 60 (2013)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/60/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 60 (2013) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/60/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 59-"> Issue 2 Pages 59- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/60/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div> <div class="facetsearch-subheader collapsed" > <span class="facetsearch-subheader-link colorscheme09-search-filter-bg customTooltip" title="Volume 59 (2012)"> <a href="https://www.jstage.jst.go.jp/browse/bpsj/59/0/_contents/-char/en" class="bluelink-style vol-link" > Volume 59 (2012) </a> </span> <div class="facetsearch-content-innerwrap colorscheme09-lighter" style="display: none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/59/2/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 2 Pages 63-"> Issue 2 Pages 63- </a></li> <li><a href="https://www.jstage.jst.go.jp/browse/bpsj/59/1/_contents/-char/en" class="bluelink-style customTooltip" title="Issue 1 Pages 1-"> Issue 1 Pages 1- </a></li> </ul> </div> </div>  <div class="facetsearch-subheader collapsed"> <span class="facetsearch-subheader-link">Predecessor</span> <div class="facetsearch-content-innerwrap" style="display: none; border-bottom:none;"> <ul class="facetsearch-links"> <li><a href="https://www.jstage.jst.go.jp/browse/ibpj/-char/en" class="bluelink-style"> Information Bulletin on Planktology in Japan </a></li> </ul> </div> </div>  <div class="clearfix"></div> </div> </div> </div> </div> </div>   <div class="col-md-18"> <div id="searchbrowse-rightsection"> <div class="feature-page-title">Current issue</div> <div id="search-results-infobar"> <div class="search-resultsinfo-leftsection">Displaying 1-8 of 8 articles from this issue</div> <div class="search-resultsinfo-rightsection print-non-disp"> <div class="search-download-btnwrap"> <a href="javascript:;" class="downloadall collapsed" data-toggle="collapse" data-target="#dl-opt">Download citation</a> <div class="collapse radiolist-dropdown" id="dl-opt"> <div class="radiolist-arrow"></div> <div class="radiolist-inner"> <div class="ep-radio"> <input type="radio" name="dlmtradio" id="dlmtradio_1" checked value="1"><label for="dlmtradio_1">RIS (compatible with EndNote, Reference Manager, ProCite, RefWorks)</label> </div> <div class="ep-radio"> <input type="radio" name="dlmtradio" id="dlmtradio_2" value="2"><label for="dlmtradio_2">Bib TeX (compatible with BibDesk, LaTeX)</label> </div> <div class="ep-radio"> <input type="radio" name="dlmtradio" id="dlmtradio_3" value="3"><label for="dlmtradio_3">Text</label> </div> <input type="button" value="Download all" onclick="downloadAll()"> </div> </div> </div> <div class="search-abtract-btnwrap"> <a href="javascript:void(0);" class="collapseall-icon arrow" style="display:none;" title="Hide all abstracts">Hide all abstracts</a> <a href="javascript:void(0);" class="expandall-icon arrow" title="Show all abstracts">Show all abstracts</a> </div> <div class="clearfix"></div> </div> </div> <div class="clearfix"></div>  <div id="search-pagination-wrap-top" style="padding-left: 0px; padding-right: 0px;"> <div class="inner colorscheme09-lighter print-non-disp"> <div class="search-pagination-left"> <ul class="search-pagination-list"> <div class="search-pagination-left"> <ul class="search-pagination-list"> <li class="inactive-page">|<</li><li class="inactive-page"><</li><li class="active-page">1</li><li class="inactive-page">></li><li class="inactive-page">>|</li></ul> </div> </ul> </div> <div class="clearfix"></div> </div> </div>  <div class="clearfix"></div>  <div id="search-resultslist-wrap">  <div class="searchbrowse-first-subheading section-level1">Original Paper</div> <ul class="search-resultslisting"> <li class=""> <div class="searchlist-title"><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_37/_article/-char/en" class="bluelink-style customTooltip" title="High-density patchiness of small planktonic copepods corresponding to the water mass structure around the cold water belt along the coastal area of the Sea of Okhotsk, Hokkaido, Japan" >High-density patchiness of small planktonic copepods corresponding to the water mass structure around the cold water belt along the coastal area of the Sea of Okhotsk, Hokkaido, Japan</a></div> <div class="searchlist-authortags customTooltip" title="Daichi Kano, Yukiko Taniuchi, Hiromi Kasai, Hiroshi Kuroda, Kazutaka Takahashi">Daichi Kano, Yukiko Taniuchi, Hiromi Kasai, Hiroshi Kuroda, Kazutaka T ...</div> <div class="searchlist-additional-info"> 2024 Volume 71 Issue 2 Pages 37-54 <br> Published: August 25, 2024 <br> Released on J-STAGE: November 21, 2024 <br> </div> <div class="searchlist-doi"><span class="doi-lb">DOI</span><a href="https://doi.org/10.24763/bpsj.71.2_37" class="bluelink-style">https://doi.org/10.24763/bpsj.71.2_37</a></div> <div class="clearfix"></div> <div class="global-tags"> <span class="tags-wrap original-tag-style" title="JOURNAL">JOURNAL</span> <span class="tags-wrap freeaccess-tag-style" title="FREE ACCESS">FREE ACCESS</span> </div> <div class="showabstractbox content"> <div class="showabstractbox-header"> <div class="expand collapse1"> <a href="javascript:void(0);"> <span class="show_abstract">Show abstract</span><span class="hide_abstract">Hide abstract</span> </a> </div> </div> <div class="inner-content abstract wrap-break-word" style="overflow: hidden; max-height: 10em;"> <p>Along the southwestern coastal area of the Okhotsk Sea in Hokkaido, four water masses (Soya warm current water [SWCW], fresh surface Okhotsk Sea water [FSOSW], intermediate cold water [ICW], and Japan Sea intermediate water [JSIW]) mix horizontally and vertically during summer, resulting in characteristic oceanographic conditions, including the formation of a cold water belt (CWB) that is associated with high chlorophyll <i>a</i> concentration. The distribution and mixing processes of each water mass play important roles in the biological productivity of this area; however, the effects of such variations on zooplankton distribution have been poorly investigated. Therefore, in this study, we aimed to assess the relationship between the planktonic copepods and water mass distribution in the coastal area of the Okhotsk Sea in Hokkaido from May, 2017 to June 2019. Although the proportions of the two numerically dominated copepod species, <i>Oithona similis</i> and <i>Pseudocalanus newmani</i> varied by species, both were less abundant in the subsurface water masses, ICW and JSIW. However, <i>O. similis</i> was constantly observed in all surface water masses from SWCW to FSOSW, and mixed water mass areas, including CWB. Although <i>P. newmani</i> was distributed in many surface water masses, its abundance was strongly associated with the chlorophyll <i>a</i> concentration. Notably, a high-density patchiness (approximately 35000 ind m<sup>-3</sup>) was formed corresponding to the highest chlorophyll <i>a</i> concentration (6.40 mg m<sup>-3</sup>) at a station in the CWB. However, the intrinsic rate of natural increase in <i>P. newmani</i> abundance could not solely explain its high-density patchiness in the ephemeral and unstable water masses, such as CWB. Here, our findings suggest the influx and accumulation of populations associated with CWB formation from surrounding water masses and behavioural responses to high chlorophyll <i>a</i> concentrations are the main factors affecting the high-density patchiness of <i>P. newmani</i>.</p> <div style="text-align:center;"> </div> <a href="javascript:void(0);" class="bluelink-style fontsize12 full-abstract"><div class="print-non-disp">View full abstract</div></a> </div> <div class="lft"> <span><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_37/_pdf/-char/en" class="bluelink-style">Download PDF</a> (7010K)</span> </div> </div> </li> </ul>  <div class="searchbrowse-first-subheading section-level1">Research Information</div> <ul class="search-resultslisting"> <li class=""> <div class="searchlist-title"><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_55/_article/-char/en" class="bluelink-style customTooltip" title="Workshop kit No. 2 for promoting marine education including resin-embedded specimens illustrating food chains" >Workshop kit No. 2 for promoting marine education including resin-embedded specimens illustrating food chains</a></div> <div class="searchlist-authortags customTooltip" title="Kunio T. Takahashi, Hisae Sakurai">Kunio T. Takahashi, Hisae Sakurai</div> <div class="searchlist-additional-info"> 2024 Volume 71 Issue 2 Pages 55-58 <br> Published: August 25, 2024 <br> Released on J-STAGE: November 21, 2024 <br> </div> <div class="searchlist-doi"><span class="doi-lb">DOI</span><a href="https://doi.org/10.24763/bpsj.71.2_55" class="bluelink-style">https://doi.org/10.24763/bpsj.71.2_55</a></div> <div class="clearfix"></div> <div class="global-tags"> <span class="tags-wrap original-tag-style" title="JOURNAL">JOURNAL</span> <span class="tags-wrap freeaccess-tag-style" title="RESTRICTED ACCESS">RESTRICTED ACCESS</span> </div> <div class="showabstractbox content"> <div class="showabstractbox-header"> <div class="expand collapse1"> <a href="javascript:void(0);"> <span class="show_abstract">Show abstract</span><span class="hide_abstract">Hide abstract</span> </a> </div> </div> <div class="inner-content abstract wrap-break-word" style="overflow: hidden; max-height: 10em;"> <p>To enhance marine education, the National Institute of Polar Research initiated the distribution of a “Workshop kit” in November 2021. This kit includes resin-embedded specimens, observation tools, a booklet, worksheets, and introductory videos. Based on the user feedback and requests, we created new materials that allowed participants to directly observe food (phytoplankton) and grazers (preserved copepods revealing digestive tract contents) effectively illustrating an aquatic food chain. In keeping with a tablet-based teaching style, we have prepared a Wi-Fi-equipped digital biological microscope, tablet PCs, and electronic booklets. In addition to continuing to lend our expanded kit, we plan to conduct observation workshops and awareness-raising activities.</p> <div style="text-align:center;"> </div> <a href="javascript:void(0);" class="bluelink-style fontsize12 full-abstract"><div class="print-non-disp">View full abstract</div></a> </div> <div class="lft"> <span><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_55/_pdf/-char/en" class="bluelink-style">Download PDF</a> (660K)</span> </div> </div> </li> </ul>  <div class="searchbrowse-first-subheading section-level1">Plankton Symposium</div> <ul class="search-resultslisting"> <li class=""> <div class="searchlist-title"><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_59/_article/-char/en" class="bluelink-style customTooltip" title="[title in Japanese]" >[title in Japanese]</a></div> <div class="searchlist-authortags customTooltip" title=""></div> <div class="searchlist-additional-info"> 2024 Volume 71 Issue 2 Pages 59-73 <br> Published: August 25, 2024 <br> Released on J-STAGE: November 21, 2024 <br> </div> <div class="searchlist-doi"><span class="doi-lb">DOI</span><a href="https://doi.org/10.24763/bpsj.71.2_59" class="bluelink-style">https://doi.org/10.24763/bpsj.71.2_59</a></div> <div class="clearfix"></div> <div class="global-tags"> <span class="tags-wrap original-tag-style" title="JOURNAL">JOURNAL</span> <span class="tags-wrap freeaccess-tag-style" title="RESTRICTED ACCESS">RESTRICTED ACCESS</span> </div> <div class="showabstractbox content"> <div class="showabstractbox-header"> </div> <div class="lft"> <span><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_59/_pdf/-char/en" class="bluelink-style">Download PDF</a> (588K)</span> </div> </div> </li> </ul>  <div class="searchbrowse-first-subheading section-level1">Prize of the Plankton Society of Japan</div> <ul class="search-resultslisting"> <li class=""> <div class="searchlist-title"><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_74/_article/-char/en" class="bluelink-style customTooltip" title="[title in Japanese]" >[title in Japanese]</a></div> <div class="searchlist-authortags customTooltip" title="[in Japanese]">[in Japanese]</div> <div class="searchlist-additional-info"> 2024 Volume 71 Issue 2 Pages 74-75 <br> Published: August 25, 2024 <br> Released on J-STAGE: November 21, 2024 <br> </div> <div class="searchlist-doi"><span class="doi-lb">DOI</span><a href="https://doi.org/10.24763/bpsj.71.2_74" class="bluelink-style">https://doi.org/10.24763/bpsj.71.2_74</a></div> <div class="clearfix"></div> <div class="global-tags"> <span class="tags-wrap original-tag-style" title="JOURNAL">JOURNAL</span> <span class="tags-wrap freeaccess-tag-style" title="RESTRICTED ACCESS">RESTRICTED ACCESS</span> </div> <div class="showabstractbox content"> <div class="showabstractbox-header"> </div> <div class="lft"> <span><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_74/_pdf/-char/en" class="bluelink-style">Download PDF</a> (274K)</span> </div> </div> </li> <li class=""> <div class="searchlist-title"><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_76/_article/-char/en" class="bluelink-style customTooltip" title="[title in Japanese]" >[title in Japanese]</a></div> <div class="searchlist-authortags customTooltip" title="[in Japanese]">[in Japanese]</div> <div class="searchlist-additional-info"> 2024 Volume 71 Issue 2 Pages 76-77 <br> Published: August 25, 2024 <br> Released on J-STAGE: November 21, 2024 <br> </div> <div class="searchlist-doi"><span class="doi-lb">DOI</span><a href="https://doi.org/10.24763/bpsj.71.2_76" class="bluelink-style">https://doi.org/10.24763/bpsj.71.2_76</a></div> <div class="clearfix"></div> <div class="global-tags"> <span class="tags-wrap original-tag-style" title="JOURNAL">JOURNAL</span> <span class="tags-wrap freeaccess-tag-style" title="RESTRICTED ACCESS">RESTRICTED ACCESS</span> </div> <div class="showabstractbox content"> <div class="showabstractbox-header"> </div> <div class="lft"> <span><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_76/_pdf/-char/en" class="bluelink-style">Download PDF</a> (237K)</span> </div> </div> </li> </ul>  <div class="searchbrowse-first-subheading section-level1">Abstracts of Original Papers on Plankton & Benthos Research</div> <ul class="search-resultslisting"> <li class=""> <div class="searchlist-title"><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_78/_article/-char/en" class="bluelink-style customTooltip" title="[title in Japanese]" >[title in Japanese]</a></div> <div class="searchlist-authortags customTooltip" title=""></div> <div class="searchlist-additional-info"> 2024 Volume 71 Issue 2 Pages 78-79 <br> Published: August 25, 2024 <br> Released on J-STAGE: November 21, 2024 <br> </div> <div class="searchlist-doi"><span class="doi-lb">DOI</span><a href="https://doi.org/10.24763/bpsj.71.2_78" class="bluelink-style">https://doi.org/10.24763/bpsj.71.2_78</a></div> <div class="clearfix"></div> <div class="global-tags"> <span class="tags-wrap original-tag-style" title="JOURNAL">JOURNAL</span> <span class="tags-wrap freeaccess-tag-style" title="RESTRICTED ACCESS">RESTRICTED ACCESS</span> </div> <div class="showabstractbox content"> <div class="showabstractbox-header"> </div> <div class="lft"> <span><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_78/_pdf/-char/en" class="bluelink-style">Download PDF</a> (231K)</span> </div> </div> </li> </ul>  <div class="searchbrowse-first-subheading section-level1">Society Report</div> <ul class="search-resultslisting"> <li class=""> <div class="searchlist-title"><a href="https://www.jstage.jst.go.jp/article/bpsj/71/2/71_80/_article/-char/en" class="bluelink-style customTooltip" title="Society Report" >Society Report</a></div> <div class="searchlist-authortags customTooltip" 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