treatments-xml/data/91/9F/6E/919F6EC7C0C7556CA07B66D70417FE17.xml

<document id="9638D1D15C29085AB7DE3E083C9ADDB2" ID-CLB-Dataset="297841" ID-DOI="10.3897/phytokeys.242.122458" ID-GBIF-Dataset="19df94fa-b30f-43e8-9e77-6aa080da5aeb" ID-publisher-id="122458" URI-arpha="FC59407F-AEB5-5651-8E32-EE3C41B60D65" XM.bibliography_approvedBy="admin" XM.materialsCitations_approvedBy="admin" article-type="research-article" checkinTime="1717183076434" checkinUser="pensoft" docAuthor="Van de Vijver, Bart, Peeters, Valérie, Hansen, Iris, Ballings, Petra &amp; de Haan, Myriam" docDate="2024" docId="919F6EC7C0C7556CA07B66D70417FE17" docLanguage="en" docName="PhytoKeys 242: 139-160" docOrigin="PhytoKeys 242" docSource="https://phytokeys.pensoft.net/article/122458/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.phytokeys" docStyleName="PensoftTaxPub.0000.journal_article.phytokeys" docTitle="Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen 2024, sp. nov." docType="treatment" docVersion="4" dtd-version="3.0" lastPageNumber="160" masterDocId="FC59407FAEB556518E32EE3C41B60D65" masterDocTitle="Five new species in the genus Staurosirella (Bacillariophyta) from European freshwater habitats" masterLastPageNumber="160" masterPageNumber="139" pageNumber="139" updateTime="1717193558142" updateUser="admin">
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<mods:title id="0DFC1CDF6B5686405AD17C5AD98CD9D3">Five new species in the genus Staurosirella (Bacillariophyta) from European freshwater habitats</mods:title>
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<mods:namePart id="5FF37F01BBDBE21E090FC9B2AA89594B">Van de Vijver, Bart</mods:namePart>
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<mods:affiliation id="6E89CBA16BA53B8304EAC762EF7F0B45">Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium &amp; University of Antwerp, Department of Biology – ECOSPHERE, Universiteitsplein 1, 2610 Wilrijk, Belgium</mods:affiliation>
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<mods:namePart id="36DF73A15039973114D729304C4C41FD">Peeters, Valérie</mods:namePart>
<mods:affiliation id="4ADEC4D923F61BAE64CF0F73A21912C4">Direction régionale Bourgogne-Franche-Comté, Service Connaissance, Office français de la biodiversité, 57 rue de Mulhouse 21000 Dijon, France</mods:affiliation>
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<mods:namePart id="ACB03E3D7A70DF6205612211AAE7772A">Hansen, Iris</mods:namePart>
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<mods:affiliation id="74620BE7BC2C3D86D9D747752E47DB59">Marine and Freshwater Research Institute, Fornubúðir 5, 220 Hafnarfjörður, Iceland</mods:affiliation>
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<mods:namePart id="3F9319D67D53929C7F61B1222404D999">Ballings, Petra</mods:namePart>
<mods:affiliation id="E0D8FF13868CCAF7BBE1690D436D4CD8">Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium</mods:affiliation>
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<mods:namePart id="F41CA4F71274F5CAF012C713A706C540">de Haan, Myriam</mods:namePart>
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<treatment id="919F6EC7C0C7556CA07B66D70417FE17" ID-DOI="http://doi.org/10.5281/zenodo.11404254" ID-GBIF-Taxon="231643729" ID-Zenodo-Dep="11404254" ID-arpha="919F6EC7-C0C7-556C-A07B-66D70417FE17" LSID="urn:lsid:plazi:treatment:919F6EC7C0C7556CA07B66D70417FE17" httpUri="http://treatment.plazi.org/id/919F6EC7C0C7556CA07B66D70417FE17">
<subSubSection id="D7CE1CE36E52AA288680AD738761BEB9" type="nomenclature">
<paragraph id="2581233CF27AF8BD0C4C091AF85E16B0">
<taxonomicName id="914F0B1E2EE348509BCB7D4809383D75" authority="Van de Vijver &amp; Iris Hansen" authorityName="Van de Vijver &amp; Iris Hansen" authorityYear="2024" class="Bacillariophyceae" family="Fragilariaceae" genus="Staurosirella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" phylum="Ochrophyta" rank="species" species="jonssoniana" status="sp. nov.">
<emphasis id="3BCCCB8274FCC75B441A81FAE20F8B8B" italics="true">Staurosirella jonssoniana</emphasis>
Van de Vijver &amp; Iris Hansen
</taxonomicName>
<taxonomicNameLabel id="035BD2946ED30B93EBBA9619865737DC" rank="species">sp. nov.</taxonomicNameLabel>
</paragraph>
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<subSubSection id="7B849120A9DAD71D2E9483D54F700F12" type="description">
<paragraph id="76DAF46B580608BF22A8769E571D98AD">
<figureCitation id="31F0D981E2EEFF50FD6B4263666DAC5E" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">Fig. 5</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="SECID0ESIAG" type="Holotype">
<paragraph id="3CDDB1E44CB20A74B49BDBDA6C0BC9BD">
<heading id="229B629E3E5A8C50079FF0F46843131B" reason="title">
<typeStatus id="CE09D85CA096F4FC74FACE7D239700FF" type="holotype">Holotype</typeStatus>
.
</heading>
</paragraph>
<paragraph id="17F9A9ECB27A1D760472218B07C6BA41">
<materialsCitation id="8366B2A1CAA3AEF243AD0777749A1EEB" collectingDate="2017-07-03" collectionCode="BR" collectorName="Iris Hansen" country="Iceland" county="Grenlaekur" latitude="63.732666" location="Graentorfa" longLatPrecision="10" longitude="-17.967833" specimenCode="BR- 4843" specimenCount="1" typeStatus="holotype">
<specimenCode id="D38D4D0EBCDB0ABED3A36848C6CC110F">BR- 4843</specimenCode>
(Meise Botanic Garden, Belgium). Fig. 
<figureCitation id="6DF4CBF06E10D88AA2C87C2CA9AD9569" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 H</figureCitation>
represents the 
<typeStatus id="79FAFFA1FB63DAD2087ABB1568BA9A74" type="holotype">holotype</typeStatus>
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0E3IAG" type="Isotype">
<paragraph id="A761780EE2DB69D34F0C2A176059B1F6">
<heading id="208736F8DD1A20C5CE12FF83D403F4D0" reason="title">
<typeStatus id="D0CCCAD2A34FC14478E0D9AA40A36F93" type="isotype">Isotype</typeStatus>
.
</heading>
</paragraph>
<paragraph id="86ECE13FBD83F7AD656AF4D66D2B4B1B">
<materialsCitation id="0A65CED55D9089461E43CD9DC1C1CCAF" specimenCode="Slide 445" specimenCount="1" typeStatus="isotype">
<specimenCode id="8A505B312E120983EE80EA496ED02569">Slide 445</specimenCode>
(University of Antwerp, Belgium)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EBJAG" type="Registration">
<paragraph id="D4579DA5FABEA457E9BF7B544E56D4DD">
<heading id="32D768D414E46B2389C4B94B0C416C10" reason="title">Registration.</heading>
</paragraph>
<paragraph id="1243D7341CB27D5AE1E3C4C64F70F0DD">
<ext-link id="9B027C145A23A835CF54AFC136DE0467" ext-link-type="uri" xlink_href="http://phycobank.org/104536" xlink_type="simple">http://phycobank.org/104536</ext-link>
.
</paragraph>
</subSubSection>
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<paragraph id="5E1AD77FB20AC439E4A3ED86C83A00B3">
<heading id="CA874E4A71975C17BFDF6F6A04ED6056" reason="title">Type locality.</heading>
</paragraph>
<paragraph id="EB265574C66D7D769EBE2EC3CA0E5F17">
<materialsCitation id="089C926AB3478C168E83625576225A23" collectingDate="2017-07-03" collectorName="Iris Hansen" country="Iceland" county="Grenlaekur" latitude="63.732666" location="Graentorfa" longLatPrecision="10" longitude="-17.967833" specimenCount="1">
<collectingCounty id="9A9B8A5E5ABD795E229496CF51F1A81C">Grenlækur</collectingCounty>
, southern 
<collectingCountry id="E4CE73CFD9E332C4988F66869CA49137" name="Iceland">Iceland</collectingCountry>
, sampling site at 
<location id="967CE3298864BB18DF861196AEF2C1A0" LSID="urn:lsid:plazi:treatment:919F6EC7C0C7556CA07B66D70417FE17:967CE3298864BB18DF861196AEF2C1A0" country="Iceland" county="Grenlaekur" latitude="63.732666" longLatPrecision="10" longitude="-17.967833" name="Graentorfa">Græntorfa</location>
, 
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EVJAG" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[-17.967833,63.732667]}">
<geoCoordinate id="B1BF44B8E86708659D5146AF962A64F5" degrees="63" direction="north" minutes="43.96" orientation="latitude" precision="9" value="63.732666">63 ° 43.96 ' N</geoCoordinate>
, 
<geoCoordinate id="B6F11F764661FEC28DEEB36DD158FAC5" degrees="17" direction="west" minutes="58.07" orientation="longitude" precision="9" value="-17.967833">17 ° 58.07 ' W</geoCoordinate>
</named-content>
, coll. date 
<date id="B9575694FBC5FF387640F4EC1A736E70" value="2017-07-03">
<collectingDate id="3B1804F733CBAEDEB3873331FAA5DB00" value="2017-07-03">03 Jul. 2017</collectingDate>
</date>
, leg. 
<collectorName id="A211A743D348A05859AFF4254D1BE92B">Iris Hansen</collectorName>
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0E1JAG" type="description">
<paragraph id="CC10B46F2BFF3B242884BA6E698DDC95">
<heading id="80EDC852DAE6CD528B9FCDF7E648663C" reason="title">Description.</heading>
</paragraph>
<paragraph id="01400B45CDB34F3351E3EAD07447C00F">
<emphasis id="3B13E93BD69E9E1602040660129CF476" bold="true" italics="true">LM</emphasis>
(Fig. 
<figureCitation id="C954737783E2F4C041A72D9667927C9E" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 A – U</figureCitation>
). Valves isopolar to weakly heteropolar, lanceolate with convex margins, and narrowly protracted, rostrate apices. Smallest valves almost elliptical (Fig. 
<figureCitation id="9A8522F2AEB5D54EA0DB3BA20817F0CC" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 T – U</figureCitation>
). Valve dimensions (n = 25): length 6–15 µm, width 3.0–3.5 µm. Sternum narrow, linear. Striae alternating, almost parallel to very slightly radiate in the middle, more strongly radiate towards the apices, 
<quantity id="9C95CE988B1F5C0A8A767E71C338C98E" metricMagnitude="-1" metricUnit="m" metricValue="3.175" metricValueMax="3.302" metricValueMin="3.048" unit="in" value="12.5" valueMax="13.0" valueMin="12.0">12–13 in</quantity>
10 µm. Areolae not discernible in LM. 
<abbrev id="ABBRID0EPKAG" xlink_title="scanning electron">
<emphasis id="E3113B060A29A94374A9873F04FC2966" bold="true" italics="true">SEM</emphasis>
</abbrev>
(Fig. 
<figureCitation id="7B35C2FB5CB4BF89D91EE0159993F47B" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 V – Y</figureCitation>
). External valve face weakly undulating with slightly raised virgae and striae sunken in ‘ punch hole-like’ depressions (Fig. 
<figureCitation id="EA27DD2B5B34C71A751A1A97D6C21343" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 V – X</figureCitation>
). Striae extending without interruption from valve face onto the mantle (Fig. 
<figureCitation id="7A4F994F00FC3D2245A070190456DD01" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 X</figureCitation>
), gradually narrowing towards the sternum (Fig. 
<figureCitation id="9C5554B5DF39B3B58418E12D2B9FDCB2" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 V – X</figureCitation>
) giving the striae a lanceolate appearance. Striae uniseriate, composed of long, slit-like, linear areolae, running parallel to the apical axis (Fig. 
<figureCitation id="327B93F0FF15FEA96598A3F0BD7DF4EC" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 V – X</figureCitation>
). Vimines very thin, not raised. Marginal spines very obvious, one per virga, each located in a shallow, pit-like depression (Fig. 
<figureCitation id="E982407045116D590E32FE443695CE22" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 V – X</figureCitation>
). Apical pore fields absent, replaced by one or two spines. Internally, striae distinctly sunken between the flat, doubly flared virgae and sternum (Fig. 
<figureCitation id="869DED051739709FBF288E8186459ACD" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 Y</figureCitation>
). Areolae occluded by irregularly shaped volae, extending from the longer inner side of each vimen (Fig. 
<figureCitation id="6A40B5F8FB8AF8F5C3ABADBD2C11A5E9" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Staurosirella jonssoniana Van de Vijver &amp; Iris Hansen, sp. nov., LM and SEM micrographs taken from the holotype material (BR- 4843, Grenlækur, southern Iceland) A – U LM pictures of valves in valve face view in decreasing length V – X SEM external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields Y SEM internal view of a complete valve. Scale bars: 10 µm (A – W, Y); 1 µm (X)." figureDoi="10.3897/phytokeys.242.122458.figure5" httpUri="https://binary.pensoft.net/fig/1060331">5 Y</figureCitation>
).
</paragraph>
<caption id="9293010C23F494E2DDEC32A30191B22A" ID-DOI="10.3897/phytokeys.242.122458.figure5" ID-arpha="8879BCCA-9D79-5ECE-9835-FC76AC818C68" httpUri="https://binary.pensoft.net/fig/1060331" startId="F5">
<paragraph id="B0AD1CDDD8848A7054F971F9DBF80A82">
<label id="35EB5F1CE8D254BFCFA47945100D5323">Figure 5.</label>
</paragraph>
<paragraph id="5CDC6DDA9E0FA228BCD68E406679CA77">
<taxonomicName id="973FD24F2B6D0B3A9E0067BF69E46EE2" authority="Van de Vijver &amp; Iris Hansen" authorityName="Van de Vijver &amp; Iris Hansen" authorityYear="2024" class="Bacillariophyceae" family="Fragilariaceae" genus="Staurosirella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" phylum="Ochrophyta" rank="species" species="jonssoniana" status="sp. nov.">
<emphasis id="6B6E1375AC5E5B1DB0C8E508D42A0F12" italics="true">Staurosirella jonssoniana</emphasis>
Van de Vijver &amp; Iris Hansen
</taxonomicName>
, 
<taxonomicNameLabel id="D9A6E1E1BBA712366054FE03EA7F0CC4" rank="species">sp. nov.</taxonomicNameLabel>
, LM and 
<abbrev id="ABBRID0EGMAG" xlink_title="scanning electron">SEM</abbrev>
micrographs taken from the holotype material (
<specimenCode id="E913F24BA6F59F3A10991212900E8E22">BR- 4843</specimenCode>
, Grenlækur, southern Iceland) 
<emphasis id="033895EFC23DFE54D9706A88E3CDB135" bold="true">A</emphasis>
– 
<emphasis id="073346D59A590DDD85397E82CA5442EB" bold="true">U</emphasis>
LM pictures of valves in valve face view in decreasing length 
<emphasis id="5B19BD8CB86DEF7C8E90DD2987A9BC07" bold="true">V – X</emphasis>
<abbrev id="ABBRID0EQMAG" xlink_title="scanning electron">SEM</abbrev>
external view of three complete valves with focus on the spines located in pit-like depressions. Note the absence of apical porefields 
<emphasis id="CD8120BFFD7E2540EED381CF654EA927" bold="true">Y</emphasis>
<abbrev id="ABBRID0EWMAG" xlink_title="scanning electron">SEM</abbrev>
internal view of a complete valve. Scale bars: 10 µm (
<emphasis id="CCFCFCB1332FCA7B06FCE17591C0572D" bold="true">A – W, Y</emphasis>
); 1 µm (
<emphasis id="8FD9B9A2405737A1CBC5B57726A56F65" bold="true">X</emphasis>
).
</paragraph>
</caption>
</subSubSection>
<subSubSection id="SECID0EDNAG" type="etymology">
<paragraph id="BB7EAD70F1038A96DF7D724AA0ECCD1B">
<heading id="EE6756B0F06A164105177276F5F08B04" reason="title">Etymology.</heading>
</paragraph>
<paragraph id="46069B32FA61F56CE17B4EF24B6B479B">
The new species honours our friend and colleague Gunnar Steinn Jónsson (Reykjavik, 
<collectingCountry id="24DF68AF43FBE55231AE421E1244F79E" name="Iceland">Iceland</collectingCountry>
) in recognition of his important contributions to the diatom research in 
<collectingCountry id="4FBF8B28A696B2780C92E33A2913181C" name="Iceland">Iceland</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EINAG" type="distribution">
<paragraph id="089D59779BA57120FBB9B7C23A721B91">
<heading id="0C932928E31636DDF80905866095C880" reason="title">Distribution.</heading>
</paragraph>
<paragraph id="18A040620D508E7169BA81E65E99D293">
<taxonomicName id="C5F1AC151E9D4BFC77615DF87BDB6991" authorityName="Van de Vijver &amp; Iris Hansen" authorityYear="2024" class="Bacillariophyceae" family="Fragilariaceae" genus="Staurosirella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" phylum="Ochrophyta" rank="species" species="jonssoniana">
<emphasis id="D8BD5360A9CAC23FBD6BD2383EEAB4F8" italics="true">Staurosirella jonssoniana</emphasis>
</taxonomicName>
has so far only been found in 
<collectingCountry id="C430535C7F0630F66F219FAB91DE6603" name="Iceland">Iceland</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EZNAG" type="ecology">
<paragraph id="26838D44E7E5A529CCCB43729738BE05">
<heading id="53AFF1C8166CB628E20AC6BBC417D77F" reason="title">Ecology and associated diatom flora.</heading>
</paragraph>
<paragraph id="3F3BED3A88F8E8BB162BDF86910742BC">
The type locality, Grenlækur, is a small spring-fed stream in southern 
<collectingCountry id="D93F2E100714E6E087D5AF47BB44465C" name="Iceland">Iceland</collectingCountry>
. The stream has a slightly alkaline pH (7.8), a rather low conductivity (156 µS / cm), low nitrate (
<quantity id="664EFEF6A05A52012081CC62295C78F9" metricMagnitude="-8" metricUnit="kg" metricValue="2.0" unit="mg" value="0.02">0.02 mg</quantity>
/ l) and phosphate (
<quantity id="E69F8C895E7C0483A8971B4A796FE3C1" metricMagnitude="-7" metricUnit="kg" metricValue="9.7" unit="mg" value="0.97">0.97 mg</quantity>
/ l), and moderate sulphate (
<quantity id="3EFE8CD019F85989C0DC2025D1A8D28B" metricMagnitude="-5" metricUnit="kg" metricValue="3.78" unit="mg" value="37.8">37.8 mg</quantity>
/ l) levels. The diatom flora in the sample is quite diverse and dominated by a large number of species with 
<taxonomicName id="16BC5E9CC2DA67AC0B8D4B32603CA978" authorityName="Van de Vijver &amp; Iris Hansen" authorityYear="2024" class="Bacillariophyceae" family="Fragilariaceae" genus="Staurosirella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" phylum="Ochrophyta" rank="species" species="jonssoniana">
<emphasis id="6B78253232F62C3BC13BFA9F37C17497" italics="true">Staurosirella jonssoniana</emphasis>
</taxonomicName>
only being relatively rare in the sample. The dominant species include 
<taxonomicName id="74F442AE4911D54DE88F10650F74019C" authority="Van de Vijver &amp; Iris Hansen" authorityName="Van de Vijver &amp; Iris Hansen" class="Bacillariophyceae" family="Fragilariaceae" genus="Fragilaria" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" phylum="Ochrophyta" rank="species" species="landnama">
<emphasis id="49039E4BD4D2411CB24C09015B53DA4D" italics="true">Fragilaria landnama</emphasis>
Van de Vijver &amp; Iris Hansen
</taxonomicName>
, 
<taxonomicName id="38D1D4D6978B36B02540CA32DE664E8D" authority="Van de Vijver &amp; Jarlman" authorityName="Van de Vijver &amp; Jarlman" authorityYear="2012" class="Bacillariophyceae" family="Fragilariaceae" genus="Fragilaria" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" phylum="Ochrophyta" rank="species" species="sandellii">
<emphasis id="4D9C0E60230E2FE05EDF4F47F7AD4F6D" italics="true">F. sandellii</emphasis>
Van de Vijver &amp; Jarlman
</taxonomicName>
, 
<taxonomicName id="612A5CAE50957B92BC3F5BFBC07303F6" authority="Kulikovskiy et al." authorityName="Kulikovskiy" class="Bacillariophyceae" family="Fragilariaceae" genus="Staurosira" higherTaxonomySource="GBIF" isUncertain="true" kingdom="Chromista" order="Fragilariales" phylum="Ochrophyta" rank="species" species="sviridae">
<emphasis id="777D7427D0158FCDBAB5A61D0CF0B58E" italics="true">Staurosira</emphasis>
cf. 
<emphasis id="15FA43179070D640EB674FA303A4FB0B" italics="true">sviridae</emphasis>
Kulikovskiy et al.
</taxonomicName>
, 
<taxonomicName id="26D6C604C15E5D25D5F847B9A6E3CB50" authority="(Brebisson) Lange-Bertalot" authorityName="Lange-Bertalot" baseAuthorityName="Brebisson" class="Bacillariophyceae" family="Achnanthidiaceae" genus="Planothidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" phylum="Ochrophyta" rank="species" species="lanceolatum">
<emphasis id="41CC919704A9D84752D9EA0724C1AE94" italics="true">Planothidium lanceolatum</emphasis>
(Brébisson) Lange-Bertalot
</taxonomicName>
, different 
<taxonomicName id="D361E4B681EAA185A7ADAFFC21F4D960">
<emphasis id="D49D900CE081CE12041BA6311CC7EA21" italics="true">Cocconeis</emphasis>
species
</taxonomicName>
(mainly 
<taxonomicName id="621276D8E3D387EC499141D2C4851845" authority="Ehrenberg" authorityName="Ehrenberg" authorityYear="1854" class="Bacillariophyceae" family="Cocconeidaceae" genus="Cocconeis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" phylum="Ochrophyta" rank="species" species="euglypta">
<emphasis id="F032AE096339BB8B024A266327DC4C67" italics="true">C. euglypta</emphasis>
Ehrenberg
</taxonomicName>
), 
<taxonomicName id="41F50A0253B8AFF3CE2A36315BC7E930" authority="Krammer &amp; Lange-Bertalot" authorityName="Krammer &amp; Lange-Bertalot" authorityYear="1987" class="Bacillariophyceae" family="Surirellaceae" genus="Surirella" higherTaxonomySource="GBIF,CoL" kingdom="Chromista" order="Surirellales" phylum="Ochrophyta" rank="species" species="brebissonii">
<emphasis id="0F305DB76C35804B5BA2361AE60A0967" italics="true">Surirella brebissonii</emphasis>
Krammer &amp; Lange-Bertalot
</taxonomicName>
, 
<taxonomicName id="60ECB5A62B20E5FC7E73CD0EFAA61F11" authority="E. Reichardt &amp; Lange-Bertalot" authorityName="E. Reichardt &amp; Lange-Bertalot" class="Bacillariophyceae" family="Gomphonemataceae" genus="Gomphonema" higherTaxonomySource="CoL" kingdom="Chromista" order="Naviculales" phylum="Ochrophyta" rank="variety" species="pumilum" variety="rigidum">
<emphasis id="E6848891F6D20EBB6834F619A95CF5CC" italics="true">Gomphonema pumilum var. rigidum</emphasis>
E. Reichardt &amp; Lange-Bertalot
</taxonomicName>
, although none of them reaches more than 10 % of all counted valves. Rarer species include 
<taxonomicName id="EDDCE939694A0ADCE20625256B918E73" authority="(Ehrenberg) Kutzing" authorityName="Kutzing" baseAuthorityName="Ehrenberg" class="Gastropoda" family="Caecidae" genus="Odontidium" kingdom="Animalia" order="Littorinimorpha" phylum="Mollusca" rank="species" species="mesodon">
<emphasis id="412AA3F6497CC3D8A8E370ABBEFC8FDB" italics="true">Odontidium mesodon</emphasis>
(Ehrenberg) Kützing
</taxonomicName>
, 
<taxonomicName id="106C25F7F105EFD4CEF59F91E9A078EC" authority="Kutzing" authorityName="Kutzing" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" phylum="Ochrophyta" rank="species" species="radiosa">
<emphasis id="369223E80B042F3D5D3BA23064593A1F" italics="true">Navicula radiosa</emphasis>
Kützing
</taxonomicName>
, 
<taxonomicName id="210E7095F5A6DB8C7FF7B6E66C90831A" authority="Grunow" authorityName="Grunow" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" phylum="Ochrophyta" rank="species" species="slesvicensis">
<emphasis id="4F1ABC43A38AADE4488403EFDA5D27FC" italics="true">N. slesvicensis</emphasis>
Grunow
</taxonomicName>
and 
<taxonomicName id="255C024C89FFF692E12D410363E3B517" authority="(Kutzing) Kutzing." authorityName="Kutzing." baseAuthorityName="Kutzing" class="Bacillariophyceae" family="Naviculaceae" genus="Amphora" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" phylum="Ochrophyta" rank="species" species="ovalis">
<emphasis id="6B6CA1B829552EBDA3DBB794395B7A85" italics="true">Amphora ovalis</emphasis>
(Kützing) Kützing.
</taxonomicName>
The flora points to colder, fast-flowing, meso- to eutrophic, alkaline conditions (
<bibRefCitation id="E985B6872FE39D641FFC3F8B9E15ECBF" author="Lange-Bertalot" etAl="et al." firstAuthor="Lange-Bertalot" refId="B10" refString="Lange-Bertalot H, Hofmann G, Werum M, Cantonati M (2017) Freshwater benthic diatoms of Central Europe: over 800 common species used in ecological assessment. English edition with updated taxonomy and added species. Koeltz Botanical Books, Schmitten-Oberreifenberg, 1–942." year="2017">Lange-Bertalot et al. 2017</bibRefCitation>
; 
<bibRefCitation id="9727D81B0A8E93A5D88845DB1F3775AA" DOI="10.5507/fot.2022.013" author="Van de Vijver" etAl="et al." firstAuthor="Van de Vijver" issue="1" journalOrPublisher="Fottea" pagination="62-96" refId="B29" refString="Van de Vijver B, Schuster TM, Jónsson GS, Hansen I, Williams DM, Kusber W-H, Wetzel CE, Ector L (2023) A critical analysis of the Fragilaria vaucheriae complex (Bacillariophyta) in Europe. Fottea 23 (1): 62–96. https://doi.org/10.5507/fot.2022.013" title="A critical analysis of the Fragilaria vaucheriae complex (Bacillariophyta) in Europe." volume="23" year="2023">Van de Vijver et al. 2023</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>