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<document id="DDDD8CB221CDE42FB913FB22A0BE2E28" ID-DOI="10.11646/phytotaxa.395.2.5" ID-ISSN="1179-3163" ID-Zenodo-Dep="13716561" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725650197340" checkinUser="felipe" docAuthor="Kennedy, Bryan, Buckley, Yvonne &amp; Allott, Norman" docDate="2019" docId="05568795FFF8FF90BA8CD2E6D601F7B5" docLanguage="en" docName="phytotaxa.395.2.5.pdf" docOrigin="Phytotaxa 395 (2)" docSource="http://dx.doi.org/10.11646/phytotaxa.395.2.5" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Encyonopsis minuta Krammer &amp; Reichardt 1997" docType="treatment" docVersion="2" lastPageNumber="110" masterDocId="F96FFFEDFFEAFF85BA04D431D479FFAB" masterDocTitle="Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland" masterLastPageNumber="128" masterPageNumber="89" pageNumber="107" updateTime="1725656744899" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="02993D2FF384B8FA50508A01A9068305">Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland</mods:title>
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<paragraph id="8D403683FFF8FF97BA8CD2E6D753F959" blockId="18.[136,810,1751,1778]" box="[136,810,1751,1778]" pageId="18" pageNumber="107">
<heading id="D60881EFFFF8FF97BA8CD2E6D753F959" box="[136,810,1751,1778]" fontSize="11" level="2" pageId="18" pageNumber="107" reason="3">
<taxonomicName id="4AFF4D00FFF8FF97BA8CD2E6D60EF959" authority="Krammer &amp; Reichardt" authorityName="Krammer &amp; Reichardt" authorityYear="1997" box="[136,631,1751,1778]" class="Bacillariophyceae" family="Cymbellaceae" genus="Encyonopsis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="18" pageNumber="107" phylum="Ochrophyta" rank="species" species="minuta">
<emphasis id="BF8BEA91FFF8FF97BA8CD2E6D50AF95A" bold="true" box="[136,371,1751,1777]" italics="true" pageId="18" pageNumber="107">Encyonopsis minuta</emphasis>
Krammer &amp; Reichardt
</taxonomicName>
(
<figureCitation id="15C42A06FFF8FF97B882D2E8D75BF959" box="[646,802,1753,1778]" captionStart-0="FIGURES 288319" captionStart-1="FIGURES 320352" captionStartId-0="22.[136,243,1940,1961]" captionStartId-1="23.[136,243,1940,1961]" captionTargetBox-0="[189,1392,195,1910]" captionTargetBox-1="[175,1403,193,1905]" captionTargetId-0="figure-15@22.[178,1409,187,1917]" captionTargetId-1="figure-14@23.[170,1416,190,1915]" captionTargetPageId-0="22" captionTargetPageId-1="23" captionText-0="FIGURES 288319. Encyonopsis minuta Krammer &amp; Reichardt Figs 288319. LM. Figs 288311. Valves showing morphological range and size variation in populations with clearly capitate apices. Figs 312319. SEM. Figs 312315. External view. Figs 316318. Internal view. Fig. 319. Internal view of raphe fissure with clear intermissio visible. Scale bar in Fig. 311 = 10 μm for all LM figures. Scale bar in all SEM micrographs = 1 μm." captionText-1="FIGURES 320352. Encyonopsis minuta Krammer &amp; Reichardt Figs 320345.LM. Figs 320345.Illustrating morphology of populations with a size reduction series. Figs 346352. SEM. Figs 346350. External view with valves maintaining bluntly rounded poles. Figs 351 352. Internal view showing distinctive intermissio at central area. Scale bar in Fig. 345 = 10 μm for all LM figures. Scale bar in all SEM micrographs = 1 μm." figureDoi-0="http://doi.org/10.5281/zenodo.13716589" figureDoi-1="http://doi.org/10.5281/zenodo.13716593" httpUri-0="https://zenodo.org/record/13716589/files/figure.png" httpUri-1="https://zenodo.org/record/13716593/files/figure.png" pageId="18" pageNumber="107">Figs 288352</figureCitation>
)
</heading>
</paragraph>
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<subSubSection id="C5E56508FFF8FF90BA8CD328D601F7B5" lastPageId="21" lastPageNumber="110" pageId="18" pageNumber="107" type="description">
<paragraph id="8D403683FFF8FF97BA8CD328D17DF783" blockId="18.[136,1452,1817,2088]" pageId="18" pageNumber="107">
Description: Outline symmetric to weakly dorsiventral, lanceolate with weakly convex dorsal and ventral sides. Poles are capitate to subcapitate, always broadly rounded and at least slightly protracted even in diminutive valves. Typically lacking clear shoulders with a gently sloping outline. Axial area is very narrow and central area absent. Length 8.0 17.0 μm; width 2.83.8 μm; maximum L:W ratio 4.9. Striae parallel to weakly radiate and rarely with only a slightly shortened single stria at centre in smaller valves. Striae appearing quite uniform and easily visible over valve length towards poles. Maximum stria density in Irish populations higher than reported for
<typeStatus id="52448821FFF8FF97BE4ED3F8D003F849" box="[1098,1146,1993,2018]" pageId="18" pageNumber="107">type</typeStatus>
description (~
<quantity id="4A079B66FFF8FF97BF1BD3F8D1FFF849" box="[1311,1414,1993,2018]" metricMagnitude="-1" metricUnit="m" metricValue="7.874" metricValueMax="8.128" metricValueMin="7.62" pageId="18" pageNumber="107" unit="in" value="31.0" valueMax="32.0" valueMin="30.0">3032 in</quantity>
10 μm). Raphe filiform, dorsally deflected at centre, with a distinctive short section recurved back towards centre on ventral side and lacking obvious expanded terminal raphe endings. Areolae always small and rounded.
</paragraph>
<caption id="D980660BFFF9FF96BA8CD34AD5B9F78B" ID-DOI="http://doi.org/10.5281/zenodo.13716583" ID-Zenodo-Dep="13716583" httpUri="https://zenodo.org/record/13716583/files/figure.png" pageId="19" pageNumber="108" startId="19.[136,243,1915,1936]" targetBox="[176,1409,196,1878]" targetPageId="19" targetType="figure">
<paragraph id="8D403683FFF9FF96BA8CD34AD5B9F78B" blockId="19.[136,1451,1915,2080]" pageId="19" pageNumber="108">
<emphasis id="BF8BEA91FFF9FF96BA8CD34AD534F83B" bold="true" box="[136,333,1915,1936]" pageId="19" pageNumber="108">FIGURES 178200</emphasis>
.
<taxonomicName id="4AFF4D00FFF9FF96BB5ED34AD6F7F83B" authority="Krammer" authorityName="Krammer" authorityYear="1997" box="[346,654,1915,1936]" class="Bacillariophyceae" family="Cymbellaceae" genus="Encyonopsis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="19" pageNumber="108" phylum="Ochrophyta" rank="species" species="tavirana">
<emphasis id="BF8BEA91FFF9FF96BB5ED34AD652F83B" box="[346,555,1915,1936]" italics="true" pageId="19" pageNumber="108">Encyonopsis tavirana</emphasis>
Krammer
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Typus: Prap. 517B IOK. Figs 178192. LM. Figs 178192. Valves showing range of morphological variability and variation in type population. Figs 193200. SEM. Fig. 193. External view. Fig. 194. Internal view. Figs 195199. SEM showing variation in outline and apices in type population. Fig. 200. Close up of valve at pole showing form of distal raphe ending and shape of areolae. Scale bar in Fig. 189 = 10 μm for LM figs 178189 and in Fig. 192 = 10 μm for LM figs 190192. Scale bar in all SEM micrographs = 1 μm.
</paragraph>
</caption>
<caption id="D980660BFFFEFF91BA8CD3F8D762F78D" ID-DOI="http://doi.org/10.5281/zenodo.13716585" ID-Zenodo-Dep="13716585" httpUri="https://zenodo.org/record/13716585/files/figure.png" pageId="20" pageNumber="109" startId="20.[136,243,1993,2014]" targetBox="[183,1412,204,1957]" targetPageId="20" targetType="figure">
<paragraph id="8D403683FFFEFF91BA8CD3F8D762F78D" blockId="20.[136,1452,1993,2086]" pageId="20" pageNumber="109">
<emphasis id="BF8BEA91FFFEFF91BA8CD3F8D537F875" bold="true" box="[136,334,1993,2014]" pageId="20" pageNumber="109">FIGURES 201245</emphasis>
.
<taxonomicName id="4AFF4D00FFFEFF91BB5FD3F8D62DF875" authorityName="Krammer" authorityYear="1997" box="[347,596,1993,2014]" class="Bacillariophyceae" family="Cymbellaceae" genus="Encyonopsis" higherTaxonomySource="GBIF" isUncertain="true" kingdom="Chromista" order="Cymbellales" pageId="20" pageNumber="109" phylum="Ochrophyta" rank="species" species="tavirana">
<emphasis id="BF8BEA91FFFEFF91BB5FD3F8D5ADF875" box="[347,468,1993,2014]" italics="true" pageId="20" pageNumber="109">Encyonopsis</emphasis>
aff.
<emphasis id="BF8BEA91FFFEFF91B807D3F8D62DF875" box="[515,596,1993,2014]" italics="true" pageId="20" pageNumber="109">tavirana</emphasis>
</taxonomicName>
. Figs 201236. LM. Figs 201236. Valves showing morphological variability for a size diminution series. Figs 237245. SEM. Figs 237 &amp; 239243. External view. Figs 238 &amp; 244245. Internal view. Scale bar in Fig. 236 = 10 μm for all LM figures. Scale bar in all SEM micrographs = 1 μm.
</paragraph>
</caption>
<caption id="D980660BFFFFFF90BA8CD26ED614F917" ID-DOI="http://doi.org/10.5281/zenodo.13716587" ID-Zenodo-Dep="13716587" httpUri="https://zenodo.org/record/13716587/files/figure.png" pageId="21" pageNumber="110" startId="21.[136,243,1631,1652]" targetBox="[171,1418,194,1602]" targetPageId="21" targetType="figure">
<paragraph id="8D403683FFFFFF90BA8CD26ED614F917" blockId="21.[136,1452,1631,1724]" pageId="21" pageNumber="110">
<emphasis id="BF8BEA91FFFFFF90BA8CD26ED536F9DF" bold="true" box="[136,335,1631,1652]" pageId="21" pageNumber="110">FIGURES 246287</emphasis>
.
<taxonomicName id="4AFF4D00FFFFFF90BB59D26ED677F9DF" box="[349,526,1631,1652]" class="Bacillariophyceae" family="Cymbellaceae" genus="Encyonopsis" kingdom="Chromista" order="Cymbellales" pageId="21" pageNumber="110" phylum="Ochrophyta" rank="species" species="undefined-1">
<emphasis id="BF8BEA91FFFFFF90BB59D26ED5AFF9DF" box="[349,470,1631,1652]" italics="true" pageId="21" pageNumber="110">Encyonopsis</emphasis>
sp. 1
</taxonomicName>
Figs 246287. LM. Figs 246281. Valves showing morphological range and size variation in populations. Figs 282287. SEM. Figs 282285. External view. Figs 286287. Internal view. Scale bar in Fig. 257 = 10 μm for all LM figures. Scale bar in all SEM micrographs = 1 μm.
</paragraph>
</caption>
<paragraph id="8D403683FFFFFF90BAB9D2DAD571F83A" blockId="21.[136,1452,1771,2078]" pageId="21" pageNumber="110">
Easily confused with
<taxonomicName id="4AFF4D00FFFFFF90BBB7D2DAD614F8AF" authorityName="Krammer" authorityYear="1997" baseAuthorityName="Grunow" box="[435,621,1771,1796]" class="Bacillariophyceae" family="Cymbellaceae" genus="Cymbella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="21" pageNumber="110" phylum="Ochrophyta" rank="species" species="microcephala">
<emphasis id="BF8BEA91FFFFFF90BBB7D2DAD614F8AF" box="[435,621,1771,1796]" italics="true" pageId="21" pageNumber="110">E. microcephala</emphasis>
</taxonomicName>
in past studies but populations converge and may be difficult to separate in LM. The size reduction series (
<figureCitation id="15C42A06FFFFFF90B801D33FD6D8F88C" box="[517,673,1806,1831]" captionStart="FIGURES 320352" captionStartId="23.[136,243,1940,1961]" captionTargetBox="[175,1403,193,1905]" captionTargetId="figure-14@23.[170,1416,190,1915]" captionTargetPageId="23" captionText="FIGURES 320352. Encyonopsis minuta Krammer &amp; Reichardt Figs 320345.LM. Figs 320345.Illustrating morphology of populations with a size reduction series. Figs 346352. SEM. Figs 346350. External view with valves maintaining bluntly rounded poles. Figs 351 352. Internal view showing distinctive intermissio at central area. Scale bar in Fig. 345 = 10 μm for all LM figures. Scale bar in all SEM micrographs = 1 μm." figureDoi="http://doi.org/10.5281/zenodo.13716593" httpUri="https://zenodo.org/record/13716593/files/figure.png" pageId="21" pageNumber="110">Figs 320352</figureCitation>
) are less clearly protracted and have a higher maximum stria density but retain the distinctive ultrastructure of more clearly capitate frustules. The general size, outline and broadly rounded poles in combination with relatively coarse sub-parallel striae are often sufficiently clear to permit identification in most cases.
</paragraph>
<paragraph id="8D403683FFFFFF90BAB9D3AAD601F7B5" blockId="21.[136,1452,1771,2078]" pageId="21" pageNumber="110">Ecology: Described as cosmopolitan and well distributed in suitable habitats in temperate to boreal regions. Well distributed in this dataset occurring in 40 lakes, reaching a maximum relative abundance of 16.5%. Density is greatest at the upper end of the alkalinity gradient and a total phosphorous optimum near 10 μg/l-P suggests a diatom sensitivity score of S=1 for lake ecological assessment.</paragraph>
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</treatment>
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