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<document id="C4BEB352931F648608C9824DBEBE9959" ID-CLB-Dataset="22014" ID-DOI="10.5852/ejt.2014.79" ID-GBIF-Dataset="b2e284c1-70c1-4e2e-a6ef-cff807e570b5" ID-ISSN="2118-9773" ID-Zenodo-Dep="3835050" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1589939914742" checkinUser="tatiana" docAuthor="Vijver, Bart Van De &amp; Kopalová, Kateřina" docDate="2014" docId="EA238799B913ED608146FD14FD2AF8B7" docLanguage="en" docName="ejt-2014-79.pdf.imf" docOrigin="European Journal of Taxonomy 79" docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1" docStyleId="EF2B578F1D15862ADE45B0C07C620911" docStyleName="EJT.2018-.journal_article.type1" docStyleVersion="14" docTitle="Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalova 2014, sp. nov." docType="treatment" docVersion="6" lastPageNumber="8" masterDocId="161AFFE1B916ED678027FFB9FFD3FA20" masterDocTitle="Four Achnanthidium species (Bacillariophyta) formerly identified as Achnanthidium minutissimum from the Antarctic Region" masterLastPageNumber="19" masterPageNumber="1" pageNumber="6" updateTime="1698840352454" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-3.0" zenodo-license-figures="CC-BY-3.0" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="DE3EC182250580782B9C5D208824B9D4">Four Achnanthidium species (Bacillariophyta) formerly identified as Achnanthidium minutissimum from the Antarctic Region</mods:title>
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<mods:name id="74AB492BE3B16FAF42A1693A2C016EA7" type="personal">
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<mods:namePart id="B476E2DC064F7C73E44C6CAF0E849FB9">Vijver, Bart Van De</mods:namePart>
<mods:affiliation id="C66EEDE70ADAE5BB6AC4CDA8A93258F9">Botanic Garden Meise, Department of Bryophyta &amp; Thallophyta, Nieuwelaan 38, B- 1860 Meise, Belgium Email: vandevijver @ br. fgov. be (corresponding author) &amp; University of Antwerp, Department of Biology, ECOBE, Universiteitsplein 1, B- 2610 Wilrijk, Antwerpen, Belgium</mods:affiliation>
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<mods:namePart id="E0B2D16B7BB05C1F07473575DC131CDC">Kopalová, Kateřina</mods:namePart>
<mods:affiliation id="F89959FD40E8F0D21510EA038C9F8381">Charles University in Prague, Faculty of Science, Department of Ecology, Viničná 7, CZ- 12844 Prague 2, Czech Republic</mods:affiliation>
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<mods:title id="83ED2814106C7DAFC5472E83CFA08270">European Journal of Taxonomy</mods:title>
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<mods:date id="6693B89C9F3A1FEC0C267310EACFCDAE">2014</mods:date>
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<mods:number id="31361E03946FC0DC61674869CFCE6C9A">2014-04-07</mods:number>
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<mods:number id="10FD16871CA9AD5682D3D7B488A6A84A">79</mods:number>
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<mods:identifier id="49A7845BA5FC8AB5FDBC7475AA7916C7" type="CLB-Dataset">22014</mods:identifier>
<mods:identifier id="83A756F6364C2C17D82BACB13B3AC001" type="DOI">10.5852/ejt.2014.79</mods:identifier>
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<treatment id="EA238799B913ED608146FD14FD2AF8B7" ID-DOI="http://doi.org/10.5281/zenodo.3851711" ID-GBIF-Taxon="164241227" ID-Zenodo-Dep="3851711" LSID="urn:lsid:plazi:treatment:EA238799B913ED608146FD14FD2AF8B7" httpUri="http://treatment.plazi.org/id/EA238799B913ED608146FD14FD2AF8B7" lastPageId="7" lastPageNumber="8" pageId="5" pageNumber="6">
<subSubSection id="2A906504B913ED628146FD14FB00F8E8" box="[353,1235,685,712]" pageId="5" pageNumber="6" type="nomenclature">
<paragraph id="6235368FB913ED628146FD14FB00F8E8" blockId="5.[353,1235,685,751]" box="[353,1235,685,712]" pageId="5" pageNumber="6">
<heading id="397D81E3B913ED628146FD14FB00F8E8" box="[353,1235,685,712]" centered="true" fontSize="11" level="2" pageId="5" pageNumber="6" reason="2">
<taxonomicName id="A58A4D0CB913ED628146FD14FBA2F8E7" authority="Van de Vijver &amp; Kopalova" authorityName="Van de Vijver &amp; Kopalova" authorityYear="2014" box="[353,1137,685,712]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Achnanthidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="5" pageNumber="6" phylum="Bacillariophyta" rank="species" species="maritimo-antarcticum" status="sp. nov.">
<emphasis id="50FEEA9DB913ED628146FD14FCE1F8E7" bold="true" box="[353,818,685,712]" italics="true" pageId="5" pageNumber="6">Achnanthidium maritimo-antarcticum</emphasis>
Van de Vijver &amp; Kopalová
</taxonomicName>
<taxonomicNameLabel id="4BCD57E6B913ED62845EFD17FB00F8E8" box="[1145,1235,686,712]" pageId="5" pageNumber="6" rank="species">sp. nov.</taxonomicNameLabel>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="2A906504B913ED6282FCFD6DFC8AF8CF" box="[731,857,724,751]" pageId="5" pageNumber="6" type="description">
<paragraph id="6235368FB913ED6282FCFD6DFC8AF8CF" blockId="5.[353,1235,685,751]" box="[731,857,724,751]" pageId="5" pageNumber="6">
<figureCitation id="FAB12A0AB913ED6282FCFD6DFC8AF8CF" box="[731,857,724,751]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 29-53</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="2A906504B913ED62809AFCA0FDEDFD07" pageId="5" pageNumber="6" type="description">
<paragraph id="6235368FB913ED62809AFCA0FDC9F913" blockId="5.[189,538,793,819]" box="[189,538,793,819]" pageId="5" pageNumber="6">
<heading id="397D81E3B913ED62809AFCA0FDC9F913" bold="true" box="[189,538,793,819]" fontSize="11" level="3" pageId="5" pageNumber="6" reason="3">
<emphasis id="50FEEA9DB913ED62809AFCA0FDC9F913" bold="true" box="[189,538,793,819]" pageId="5" pageNumber="6">Morphological observations</emphasis>
</heading>
</paragraph>
<paragraph id="6235368FB913ED6280CDFCF2FD8CF945" blockId="5.[189,1399,843,1335]" box="[234,607,843,869]" pageId="5" pageNumber="6">
<emphasis id="50FEEA9DB913ED6280CDFCF2FD8CF945" bold="true" box="[234,607,843,869]" pageId="5" pageNumber="6">
Light microscopy (
<figureCitation id="FAB12A0AB913ED6281F3FCF2FD84F945" box="[468,599,843,869]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 29-49</figureCitation>
)
</emphasis>
</paragraph>
<paragraph id="6235368FB913ED62809AFCCBFE0BFF17" blockId="5.[189,1399,843,1335]" pageId="5" pageNumber="6">
Frustules in girdle view rectangular, bent around the transapical axis (
<figureCitation id="FAB12A0AB913ED6283E9FCCBFB83F9AC" box="[974,1104,882,908]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 29, 30</figureCitation>
).Valves linear-lanceolate with parallel to slightly convex margins and clearly protracted, rostrate, occasionally subcapitate apices (
<figureCitation id="FAB12A0AB913ED6280E2FC06FE99F9FA" box="[197,330,959,986]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 31-49</figureCitation>
). Valve dimensions (n=25): length
<quantity id="A5729B6AB913ED6282C3FC06FC8CF9FA" box="[740,863,959,986]" metricMagnitude="-2" metricUnit="m" metricValue="1.35" metricValueMax="1.5" metricValueMin="1.2" pageId="5" pageNumber="6" unit="mm" value="13.5" valueMax="15.0" valueMin="12.0">12–15 µm</quantity>
, width
<quantity id="A5729B6AB913ED628391FC79FB93F9FA" box="[950,1088,960,986]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" metricValueMax="2.7" metricValueMin="2.3" pageId="5" pageNumber="6" unit="mm" value="2.5" valueMax="2.7" valueMin="2.3">2.3–2.7 µm</quantity>
. Raphe valve (
<figureCitation id="FAB12A0AB913ED6284CAFC06FABDF9FA" box="[1261,1390,959,986]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 31-40</figureCitation>
) concave with a linear axial area, narrow to almost absent near the valve apices, hardly widening towards the central part of the valve. Central area irregular, formed by several more widely spaced striae. Raphe straight, filiform, invisible, with indistinct straight, simple proximal raphe endings. Distal raphe hardly discernible in LM. Striae slightly radiate throughout the entire valve, becoming more radiate and more densely spaced near the apices,
<quantity id="A5729B6AB913ED628208FB3BFD4FFEBB" box="[559,668,1153,1180]" metricMagnitude="-1" metricUnit="m" metricValue="8.001" metricValueMax="8.382" metricValueMin="7.62" pageId="5" pageNumber="6" unit="in" value="31.5" valueMax="33.0" valueMin="30.0">30– 33 in</quantity>
<quantity id="A5729B6AB913ED628284FB3BFD22FEBC" box="[675,753,1154,1180]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="5" pageNumber="6" unit="mm" value="10.0">10 µm</quantity>
, up to
<quantity id="A5729B6AB913ED628319FB3BFC76FEBB" box="[830,933,1153,1180]" metricMagnitude="0" metricUnit="m" metricValue="1.0413999999999999" metricValueMax="1.0668" metricValueMin="1.016" pageId="5" pageNumber="6" unit="in" value="41.0" valueMax="42.0" valueMin="40.0">40–42 in</quantity>
<quantity id="A5729B6AB913ED62838BFB3BFC2BFEBC" box="[940,1016,1154,1180]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="5" pageNumber="6" unit="mm" value="10.0">10 µm</quantity>
near the valve apices. Rapheless valve (
<figureCitation id="FAB12A0AB913ED628137FB11FE45FEE2" box="[272,406,1192,1218]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 41-49</figureCitation>
) slightly convex with very narrow, linear axial area, widening to form a weakly elliptically, never transapically elongated central area, never forming a fascia or subfascia. Central striae slightly more distantly spaced. Striae slightly radiate throughout, only slightly more denser near the apices,
<quantity id="A5729B6AB913ED628132FAA4FEAEFF16" box="[277,381,1308,1335]" metricMagnitude="-1" metricUnit="m" metricValue="7.874" metricValueMax="8.128" metricValueMin="7.62" pageId="5" pageNumber="6" unit="in" value="31.0" valueMax="32.0" valueMin="30.0">30–32 in</quantity>
<quantity id="A5729B6AB913ED6281A3FAA4FE00FF17" box="[388,467,1309,1335]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="5" pageNumber="6" unit="mm" value="10.0">10 µm</quantity>
.
</paragraph>
<paragraph id="6235368FB913ED6280CDFAD8FD29FF5B" blockId="5.[189,1399,1377,1831]" box="[234,762,1377,1404]" pageId="5" pageNumber="6">
<emphasis id="50FEEA9DB913ED6280CDFAD8FD29FF5B" bold="true" box="[234,762,1377,1404]" pageId="5" pageNumber="6">
Scanning electron microscopy (
<figureCitation id="FAB12A0AB913ED628248FAD8FD20FF5B" box="[623,755,1377,1403]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 50-53</figureCitation>
)
</emphasis>
</paragraph>
<paragraph id="6235368FB913ED62809AFA31FDEDFD07" blockId="5.[189,1399,1377,1831]" pageId="5" pageNumber="6">
Striae in the raphe valve composed of a series of 3
<emphasis id="50FEEA9DB913ED628337FA30FCCCFF82" box="[784,799,1417,1442]" italics="true" pageId="5" pageNumber="6">–</emphasis>
4 distinct, rounded to square areolae terminating in one transapically elongated, rectangular areola (
<figureCitation id="FAB12A0AB913ED6282D5FA16FC99FFEA" box="[754,842,1455,1482]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 50</figureCitation>
). Central striae composed of 2 rounded areolae and one transapically elongated areola near the valve margin (
<figureCitation id="FAB12A0AB913ED62839FFA6FFBC7FFD1" box="[952,1044,1494,1521]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 50</figureCitation>
). Occasionally, short slit-like areolae interposed between the central striae. Near the apices, striae only composed of 2–3 rounded areolae (
<figureCitation id="FAB12A0AB913ED628102F99AFEACFC1E" box="[293,383,1571,1598]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 50</figureCitation>
). Mantle areolae elongated, slit-like. Striae on the rapheless valve composed of 2–5 irregularly shaped (mostly rounded or elongated rectangular) areolae (
<figureCitation id="FAB12A0AB913ED628427F9F3FB8AFC45" box="[1024,1113,1610,1637]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 51</figureCitation>
). Near the apices, striae showing lowest number of areolae (
<figureCitation id="FAB12A0AB913ED62825DF9C8FD04FCAC" box="[634,727,1649,1676]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 51</figureCitation>
). Internal areolae openings on both valves covered by hymenes (
<figureCitation id="FAB12A0AB913ED628111F921FE13FC92" box="[310,448,1687,1714]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Figs 52, 53</figureCitation>
). External raphe branches straight to weakly curved terminating in simple, short proximal and distal raphe endings (
<figureCitation id="FAB12A0AB913ED62827FF907FD7CFCF9" box="[600,687,1726,1753]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 50</figureCitation>
). Distal raphe endings terminating just beyond the last apical stria (
<figureCitation id="FAB12A0AB913ED628127F95CFE8BFD20" box="[256,344,1765,1792]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 50</figureCitation>
). Internally, proximal raphe endings short, slightly bent. Distal raphe endings terminating in small helictoglossae (
<figureCitation id="FAB12A0AB913ED6281FFF8B5FDE3FD07" box="[472,560,1804,1831]" captionStart="Figs 29-53" captionStartId="6.[189,241,1823,1849]" captionTargetBox="[189,1399,740,1783]" captionTargetId="figure@6.[189,1399,740,1783]" captionTargetPageId="6" captionText="Figs 29-53. Achnanthidium maritimo-antarcticum Van de Vijver &amp; Kopalová sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 29-30. LM views of some frustules in girdle view. 31-40. LM views of raphe valves. 41-49. LM views of rapheless valves. 50. SEM external view of an entire raphe valve. 51. SEM external view of an entire rapheless valve. 52. SEM internal view of an entire raphe valve. 53. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm." figureDoi="http://doi.org/10.5281/zenodo.3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="5" pageNumber="6">Fig. 52</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="2A906504B913ED62809AF8E8FB7BFDCB" pageId="5" pageNumber="6" type="etymology">
<paragraph id="6235368FB913ED62809AF8E8FE97FD4B" blockId="5.[189,324,1873,1899]" box="[189,324,1873,1899]" pageId="5" pageNumber="6">
<heading id="397D81E3B913ED62809AF8E8FE97FD4B" bold="true" box="[189,324,1873,1899]" fontSize="11" level="3" pageId="5" pageNumber="6" reason="3">
<emphasis id="50FEEA9DB913ED62809AF8E8FE97FD4B" bold="true" box="[189,324,1873,1899]" pageId="5" pageNumber="6">Etymology</emphasis>
</heading>
</paragraph>
<paragraph id="6235368FB913ED62809AF83AFB7BFDCB" blockId="5.[189,1399,1923,2027]" pageId="5" pageNumber="6">
The specific epithet refers to the geographical area where the new species was found:
<collectingRegion id="A04EF86DB913ED6284BFF83AFAD6FDBD" box="[1176,1285,1923,1949]" country="Russia" name="Primorskiy" pageId="5" pageNumber="6">Maritime</collectingRegion>
Antarctic Region. The hyphen can and should be maintained in the species name based on art. 60.9 of the International Code of Nomenclature for algae, fungi and plants (
<bibRefCitation id="061B4B7EB913ED628388F868FB4FFDCB" author="Mcneill J. &amp; Barrie F. R. &amp; Buck W. R. &amp; Demoulin V. &amp; Greuter W. &amp; Hawksworth D. L. &amp; Herendeen P. S. &amp; Knapp S. &amp; Marhold K. &amp; Prado J. &amp; Prud'homme Van Reine W. F. &amp; Smith G. F. &amp; Wiersema J. H. &amp; Turland N. J." box="[943,1180,2001,2027]" pageId="5" pageNumber="6" refId="ref8947" refString="Mcneill J., Barrie F. R., Buck W. R., Demoulin V., Greuter W., Hawksworth D. L., Herendeen P. S., Knapp S., Marhold K., Prado J., Prud'homme Van Reine W. F., Smith G. F., Wiersema J. H. &amp; Turland N. J. 2012. International Code of Nomenclature for algae, fungi, and plants (Melbourne Code). Regnum Vegetabile 154. Koeltz Scientific Books, Koenigstein." type="book" year="2012">
McNeill
<emphasis id="50FEEA9DB913ED62843DF86BFB86FDCB" box="[1050,1109,2001,2027]" italics="true" pageId="5" pageNumber="6">et al.</emphasis>
2012
</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="2A906504B910ED61809AFEB2FC9FFBFC" pageId="6" pageNumber="7" type="materials_examined">
<paragraph id="6235368FB910ED61809AFEB2FEBFFB05" blockId="6.[189,364,267,293]" box="[189,364,267,293]" pageId="6" pageNumber="7">
<heading id="397D81E3B910ED61809AFEB2FEBFFB05" bold="true" box="[189,364,267,293]" fontSize="11" level="3" pageId="6" pageNumber="7" reason="3">
<emphasis id="50FEEA9DB910ED61809AFEB2FEBFFB05" bold="true" box="[189,364,267,293]" pageId="6" pageNumber="7">Type material</emphasis>
</heading>
</paragraph>
<materialsCitation id="D2E23CD2B910ED6180CDFE83FC7FF84F" ID-GBIF-Occurrence="2620896302" collectingDate="2009-01-15" collectorName="Leg. B. Van de Vijver" latitude="-62.62825" location="Byers Peninsula" longLatPrecision="1" longitude="-61.108444" pageId="6" pageNumber="7" specimenCount="1" stateProvince="South Shetland Islands" typeStatus="holotype">
<paragraph id="6235368FB910ED6180CDFE83FE8FFB74" blockId="6.[189,894,314,375]" box="[234,348,314,340]" pageId="6" pageNumber="7">
<emphasis id="50FEEA9DB910ED6180CDFE83FE8FFB74" bold="true" box="[234,348,314,340]" pageId="6" pageNumber="7">
<typeStatus id="BD31882DB910ED6180CDFE83FE8FFB74" box="[234,348,314,340]" pageId="6" pageNumber="7" type="holotype">Holotype</typeStatus>
</emphasis>
</paragraph>
<paragraph id="6235368FB910ED61809AFEE5FCADFB57" blockId="6.[189,894,314,375]" box="[189,894,348,375]" pageId="6" pageNumber="7">Slide BR-4362 (National Botanic Garden, Meise, Belgium).</paragraph>
<paragraph id="6235368FB910ED61809AFDBAFE8EF83C" blockId="6.[189,349,514,541]" box="[189,349,514,541]" pageId="6" pageNumber="7">
<heading id="397D81E3B910ED61809AFDBAFE8EF83C" bold="true" box="[189,349,514,541]" fontSize="11" level="3" pageId="6" pageNumber="7" reason="3">
<emphasis id="50FEEA9DB910ED61809AFDBAFE8EF83C" bold="true" box="[189,349,514,541]" pageId="6" pageNumber="7">
<typeStatus id="BD31882DB910ED61809AFDBAFF29F83D" box="[189,250,515,541]" pageId="6" pageNumber="7">Type</typeStatus>
locality
</emphasis>
</heading>
</paragraph>
<paragraph id="6235368FB910ED61809AFD8BFC7FF84F" blockId="6.[189,1398,561,623]" pageId="6" pageNumber="7">
<location id="67556054B910ED61809AFD8BFE5DF86B" LSID="urn:lsid:plazi:treatment:EA238799B913ED608146FD14FD2AF8B7:67556054B910ED61809AFD8BFE5DF86B" box="[189,398,561,588]" latitude="-62.62825" longLatPrecision="1" longitude="-61.108444" name="Byers Peninsula" pageId="6" pageNumber="7" stateProvince="South Shetland Islands">Byers Peninsula</location>
,
<location id="67556054B910ED61818DFD88FD5FF86B" LSID="urn:lsid:plazi:treatment:EA238799B913ED608146FD14FD2AF8B7:67556054B910ED61818DFD88FD5FF86B" box="[426,652,561,587]" latitude="-62.62825" longLatPrecision="1" longitude="-61.108444" name="Livingston Island" pageId="6" pageNumber="7" stateProvince="South Shetland Islands">Livingston Island</location>
,
<collectingRegion id="A04EF86DB910ED61828FFD88FC0BF86B" box="[680,984,561,587]" pageId="6" pageNumber="7">
South
<collectingRegion id="A04EF86DB910ED618323FD88FC0BF86B" box="[772,984,561,587]" country="United Kingdom" name="Shetland Islands" pageId="6" pageNumber="7">Shetland Islands</collectingRegion>
</collectingRegion>
, sample BY055 (
<geoCoordinate id="07BE5048B910ED6184F2FD88FAA5F86B" box="[1237,1398,561,587]" degrees="62" direction="south" minutes="37" orientation="latitude" pageId="6" pageNumber="7" precision="1" seconds="41.7" value="-62.62825">62°37’41.7”S</geoCoordinate>
<geoCoordinate id="07BE5048B910ED61809AFDEDFEB9F84F" box="[189,362,596,623]" degrees="61" direction="west" minutes="06" orientation="longitude" pageId="6" pageNumber="7" precision="1" seconds="30.4" value="-61.108444">61°06’30.4”W</geoCoordinate>
) (
<collectorName id="CF7F5359B910ED6181A4FDECFD55F84E" box="[387,646,596,623]" pageId="6" pageNumber="7">
<location id="67556054B910ED6181A4FDECFD55F84E" LSID="urn:lsid:plazi:treatment:EA238799B913ED608146FD14FD2AF8B7:67556054B910ED6181A4FDECFD55F84E" box="[387,646,596,623]" pageId="6" pageNumber="7">Leg. B. Van de Vijver</location>
</collectorName>
; coll. date
<date id="1634104FB910ED618322FDEDFC4CF84F" box="[773,927,596,623]" pageId="6" pageNumber="7" value="2009-01-15">
<collectingDate id="0670E9A7B910ED618322FDEDFC4CF84F" box="[773,927,596,623]" pageId="6" pageNumber="7" value="2009-01-15">15 Jan. 2009</collectingDate>
</date>
).
</paragraph>
</materialsCitation>
<paragraph id="6235368FB910ED6180CDFE27FE82FB98" blockId="6.[189,844,414,476]" box="[234,337,414,440]" pageId="6" pageNumber="7">
<emphasis id="50FEEA9DB910ED6180CDFE27FE82FB98" bold="true" box="[234,337,414,440]" pageId="6" pageNumber="7">Isotypes</emphasis>
</paragraph>
<paragraph id="6235368FB910ED61809AFE78FC9FFBFC" blockId="6.[189,844,414,476]" box="[189,844,449,476]" pageId="6" pageNumber="7">
Slides PLP-252 (
<collectionCode id="049BAE4AB910ED6181A3FE78FE61FBFB" box="[388,434,449,475]" country="USA" name="University of Alabama" pageId="6" pageNumber="7" type="University or college">UA</collectionCode>
, University of Antwerp,
<collectingCountry id="1A9D761FB910ED6182F2FE78FCECFBFC" box="[725,831,449,476]" name="Belgium" pageId="6" pageNumber="7">Belgium</collectingCountry>
).
</paragraph>
</subSubSection>
<caption id="36F56607B910ED61809AF8A6FDD0FDCA" ID-DOI="http://doi.org/10.5281/zenodo.3835056" ID-Zenodo-Dep="3835056" httpUri="https://zenodo.org/record/3835056/files/figure.png" pageId="6" pageNumber="7" startId="6.[189,241,1823,1849]" targetBox="[189,1399,740,1783]" targetPageId="6">
<paragraph id="6235368FB910ED61809AF8A6FDD0FDCA" blockId="6.[189,1399,1823,2026]" pageId="6" pageNumber="7">
<emphasis id="50FEEA9DB910ED61809AF8A6FE90FD1A" bold="true" box="[189,323,1823,1850]" pageId="6" pageNumber="7">Figs 29-53.</emphasis>
<taxonomicName id="A58A4D0CB910ED618160F899FBE4FD1A" authority="Van de Vijver &amp; Kopalova" authorityName="Van de Vijver &amp; Kopalova" authorityYear="2014" box="[327,1079,1824,1850]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Achnanthidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="6" pageNumber="7" phylum="Bacillariophyta" rank="species" species="maritimo-antarcticum" status="sp. nov.">
<emphasis id="50FEEA9DB910ED618160F899FCD1FD1A" box="[327,770,1824,1850]" italics="true" pageId="6" pageNumber="7">Achnanthidium maritimo-antarcticum</emphasis>
Van de Vijver &amp; Kopalová
</taxonomicName>
<taxonomicNameLabel id="4BCD57E6B910ED61841BF899FB46FD1A" box="[1084,1173,1824,1850]" pageId="6" pageNumber="7" rank="species">sp. nov.</taxonomicNameLabel>
Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island).
<emphasis id="50FEEA9DB910ED61848DF8FAFB3DFD7D" bold="true" box="[1194,1262,1859,1885]" pageId="6" pageNumber="7">29-30</emphasis>
. LM views of some frustules in girdle view.
<emphasis id="50FEEA9DB910ED618210F8DFFDA8FDA0" bold="true" box="[567,635,1894,1920]" pageId="6" pageNumber="7">31-40</emphasis>
. LM views of raphe valves.
<emphasis id="50FEEA9DB910ED6183E3F8DFFBDBFDA0" bold="true" box="[964,1032,1894,1920]" pageId="6" pageNumber="7">41-49</emphasis>
. LM views of rapheless valves.
<emphasis id="50FEEA9DB910ED61809AF830FF09FD83" bold="true" box="[189,218,1929,1955]" pageId="6" pageNumber="7">50</emphasis>
. SEM external view of an entire raphe valve.
<emphasis id="50FEEA9DB910ED61832FF830FCF6FD83" bold="true" box="[776,805,1929,1955]" pageId="6" pageNumber="7">51</emphasis>
. SEM external view of an entire rapheless valve.
<emphasis id="50FEEA9DB910ED61809AF815FF09FDE6" bold="true" box="[189,218,1964,1990]" pageId="6" pageNumber="7">52</emphasis>
. SEM internal view of an entire raphe valve.
<emphasis id="50FEEA9DB910ED61832EF815FCF5FDE6" bold="true" box="[777,806,1964,1990]" pageId="6" pageNumber="7">53</emphasis>
. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm.
</paragraph>
</caption>
<subSubSection id="2A906504B911ED60809AFEB2FD2AF8B7" pageId="7" pageNumber="8" type="biology_ecology">
<paragraph id="6235368FB911ED60809AFEB2FCF3FB05" blockId="7.[189,800,267,293]" box="[189,800,267,293]" pageId="7" pageNumber="8">
<heading id="397D81E3B911ED60809AFEB2FCF3FB05" bold="true" box="[189,800,267,293]" fontSize="11" level="3" pageId="7" pageNumber="8" reason="3">
<emphasis id="50FEEA9DB911ED60809AFEB2FCF3FB05" bold="true" box="[189,800,267,293]" pageId="7" pageNumber="8">Ecology, distribution and associated diatom flora</emphasis>
</heading>
</paragraph>
<paragraph id="6235368FB911ED60809AFE83FD2AF8B7" blockId="7.[189,1399,314,664]" pageId="7" pageNumber="8">
The type population of
<taxonomicName id="A58A4D0CB911ED6081E9FE82FD23FB74" authorityName="Van de Vijver &amp; Kopalova" authorityYear="2014" box="[462,752,315,341]" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Achnanthidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="7" pageNumber="8" phylum="Bacillariophyta" rank="species" species="maritimo-antarcticum">
<emphasis id="50FEEA9DB911ED6081E9FE82FD23FB74" box="[462,752,315,341]" italics="true" pageId="7" pageNumber="8">A. maritimo-antarcticum</emphasis>
</taxonomicName>
was found in a large lake located on the central plateau of Byers Peninsula. The lake is characterized by a weakly alkaline pH (7.5) and a low conductivity (130 µS/cm). The ion composition in the lake is mainly dominated by Na
<superScript id="95FF9BC7B911ED608479FE39FBBBFBAE" attach="left" box="[1118,1128,384,398]" fontSize="6" pageId="7" pageNumber="8">+</superScript>
(20.0 mg/l) and Ca
<superScript id="95FF9BC7B911ED608543FE39FAA4FBAE" attach="left" box="[1380,1399,384,398]" fontSize="6" pageId="7" pageNumber="8">2+</superScript>
(
<quantity id="A5729B6AB911ED6080E1FE1FFEF1FBE1" box="[198,290,422,449]" metricMagnitude="-5" metricUnit="kg" metricValue="1.21" pageId="7" pageNumber="8" unit="mg" value="12.1">12.1mg</quantity>
/l). Both nutrients (N-NO
<subScript id="FE0E34CAB911ED60826CFE01FD87FBE6" attach="left" box="[587,596,440,454]" fontSize="6" pageId="7" pageNumber="8">3</subScript>
+N-NO
<subScript id="FE0E34CAB911ED60828AFE01FD65FBE6" attach="left" box="[685,694,440,454]" fontSize="6" pageId="7" pageNumber="8">2</subScript>
) and phosphate were rather low (
<quantity id="A5729B6AB911ED608466FE1CFB56FBE0" box="[1089,1157,421,448]" metricMagnitude="-5" metricUnit="kg" metricValue="2.5" pageId="7" pageNumber="8" unit="mg" value="25.0">25 µg</quantity>
/l and
<quantity id="A5729B6AB911ED6084F6FE1FFAC7FBE0" box="[1233,1300,422,448]" metricMagnitude="-5" metricUnit="kg" metricValue="1.0" pageId="7" pageNumber="8" unit="mg" value="10.0">10 µg</quantity>
/l resp.). The shoreline of the lake was completely covered with partly submerged mosses. Dominant taxa in the sample included
<taxonomicName id="A58A4D0CB911ED6081A7FE54FDBDF827" box="[384,622,493,519]" class="Bacillariophyceae" family="Fragilariaceae" genus="Fragilaria" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" pageId="7" pageNumber="8" phylum="Bacillariophyta" rank="species" sensu="lato" species="capucina">
<emphasis id="50FEEA9DB911ED6081A7FE54FDBDF827" box="[384,622,493,519]" italics="true" pageId="7" pageNumber="8">Fragilaria capucina</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4BCD57E6B911ED608254FE54FD46F827" box="[627,661,493,519]" pageId="7" pageNumber="8" sensu="lato">s.l.</taxonomicNameLabel>
Desm. (
<bibRefCitation id="061B4B7EB911ED6082D4FE54FC1CF828" author="Desmazieres J. B. H. J." box="[755,975,493,520]" pageId="7" pageNumber="8" refId="ref8000" refString="Desmazieres J. B. H. J. 1825. Plantes cryptogames du Nord de la France. Leleux, Lille." type="book" year="1825">Desmazières 1825</bibRefCitation>
),
<taxonomicName id="A58A4D0CB911ED6083C5FE54FBAAF827" box="[994,1145,493,519]" class="Bacillariophyceae" family="Fragilariaceae" genus="Staurosirella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" pageId="7" pageNumber="8" phylum="Bacillariophyta" rank="genus">
<emphasis id="50FEEA9DB911ED6083C5FE54FBAAF827" box="[994,1145,493,519]" italics="true" pageId="7" pageNumber="8">Staurosirella</emphasis>
</taxonomicName>
sp.,
<taxonomicName id="A58A4D0CB911ED60848AFE54FDE4F80C" authority="Van de Vijver &amp; Zidarova in Van" authorityName="Van de Vijver &amp; Zidarova in Van" authorityYear="2011" class="Bivalvia" family="Arcidae" genus="Navicula" higherTaxonomySource="CoL" kingdom="Animalia" order="Arcida" pageId="7" pageNumber="8" phylum="Mollusca" rank="species" species="cremeri">
<emphasis id="50FEEA9DB911ED60848AFE54FAA5F827" box="[1197,1398,493,519]" italics="true" pageId="7" pageNumber="8">Navicula cremeri</emphasis>
Van de Vijver &amp; Zidarova
<emphasis id="50FEEA9DB911ED6081CAFDABFDD7F80B" box="[493,516,530,555]" italics="true" pageId="7" pageNumber="8">in</emphasis>
Van
</taxonomicName>
de Vijver
<emphasis id="50FEEA9DB911ED60828BFDABFD35F80B" box="[684,742,529,555]" italics="true" pageId="7" pageNumber="8">et al.</emphasis>
(
<bibRefCitation id="061B4B7EB911ED6082D4FDA8FBF1F80C" author="Van de Vijver B. &amp; Zidarova R. &amp; Sterken M. &amp; Verleyen E. &amp; de Haan M. &amp; Vyverman W. &amp; Hinz F. &amp; Sabbe K." box="[755,1058,529,556]" pageId="7" pageNumber="8" pagination="281 - 297" refId="ref10656" refString="Van de Vijver B., Zidarova R., Sterken M., Verleyen E., de Haan M., Vyverman W., Hinz F. &amp; Sabbe K. 2011 d. Revision of the genus Navicula s. s. (Bacillariophyceae) in inland water of the Sub-Antarctic and Antarctic with the description of 5 new species. Phycologia 50: 281 - 297. http: // dx. doi. org / 10.2216 / 10 - 49.1" type="journal article" year="2011">
Van de Vijver
<emphasis id="50FEEA9DB911ED6083BEFDABFC01F80B" box="[921,978,529,555]" italics="true" pageId="7" pageNumber="8">et al.</emphasis>
2011d
</bibRefCitation>
) and
<taxonomicName id="A58A4D0CB911ED608447FDA8FB1EF80B" box="[1120,1229,529,555]" class="Monogenea" family="Capsalidae" genus="Nitzschia" kingdom="Animalia" order="Capsalidea" pageId="7" pageNumber="8" phylum="Platyhelminthes" rank="genus">
<emphasis id="50FEEA9DB911ED608447FDA8FB1EF80B" box="[1120,1229,529,555]" italics="true" pageId="7" pageNumber="8">Nitzschia</emphasis>
</taxonomicName>
cf.
<emphasis id="50FEEA9DB911ED6084D0FDABFAA3F80B" box="[1271,1392,530,555]" italics="true" pageId="7" pageNumber="8">perminuta</emphasis>
. Smaller populations were found in other lakes such as Limnopolar Lake but these populations never exceed 1% of the total diatom composition. Due to force-fitting and taxonomic drift, the distribution of the new taxon in the Antarctic Region is unclear.
</paragraph>
</subSubSection>
</treatment>
</document>
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