267 lines
35 KiB
XML
267 lines
35 KiB
XML
<document id="978E14D92CC961E34389D1181317E094" ID-CLB-Dataset="302088" ID-DOI="10.11646/phytotaxa.218.3.4" ID-GBIF-Dataset="ad6b764d-0345-45f9-8647-31b3b3ea7068" ID-ISSN="1179-3163" ID-Zenodo-Dep="13635632" 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="1725332013892" checkinUser="felipe" docAuthor="Bahls, Loren & Potapova, Marina" docDate="2015" docId="400EA80ACA70FFCBFF6087666AA93375" docLanguage="en" docName="phytotaxa.218.3.4.pdf" docOrigin="Phytotaxa 218 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.218.3.4" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Navicula subwalkeri Bahls & Potapova 2015, sp. nov." docType="treatment" docVersion="3" lastPageNumber="260" masterDocId="BC37D072CA77FFCCFFE883526E653B6E" masterDocTitle="Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest" masterLastPageNumber="267" masterPageNumber="253" pageNumber="260" updateTime="1725338348313" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="7B944B01F88909FA6D9343C74B6F7D6F">Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest</mods:title>
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<mods:name id="CC1FE39CF861E55D358DBA289A7CD375" type="personal">
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<mods:namePart id="69901416C8EE7437D0C3EA9B7B11AB3E">Bahls, Loren</mods:namePart>
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<mods:affiliation id="1F90E42943AEEA7328684E4471D598AB">The Montana Diatom Collection, 1032 12 Avenue, Helena, Montana 59601 USA.</mods:affiliation>
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<mods:roleTerm id="DA49445AB7FB10DB9395FB0C3743FCEB">Author</mods:roleTerm>
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<mods:namePart id="762375D54B44F1B883298C1BB6EA113E">Potapova, Marina</mods:namePart>
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<mods:affiliation id="EB9D7F71F8DB50BDFE40A0D0AAEFEBCC">Diatom Herbarium, The Academy of Natural Sciences, Drexel University, 1900 Benjamin Franklin Parkway, Philadelphia, Pennsylvania, 19103, USA.</mods:affiliation>
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<mods:title id="426FAEB1C2668920E70086417C187BA9">Phytotaxa</mods:title>
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<mods:part id="532A14027923C72C2745DFB87E7A6FFD">
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<mods:date id="F9E8B9F16E0A1ED635FF2CCA4E6D4B1A">2015</mods:date>
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<mods:number id="5B629AB3556732A65B59960BD3E10B29">2015-07-03</mods:number>
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<mods:number id="0221304FFA1A04E2C5ADD8AF0B93D713">218</mods:number>
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<mods:url id="2783D67F93E3555F4E5E43230FF432D5">http://dx.doi.org/10.11646/phytotaxa.218.3.4</mods:url>
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<treatment id="400EA80ACA70FFCBFF6087666AA93375" ID-DOI="http://doi.org/10.5281/zenodo.13635636" ID-GBIF-Taxon="240097904" ID-Zenodo-Dep="13635636" LSID="urn:lsid:plazi:treatment:400EA80ACA70FFCBFF6087666AA93375" httpUri="http://treatment.plazi.org/id/400EA80ACA70FFCBFF6087666AA93375" lastPageNumber="260" pageId="7" pageNumber="260">
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<subSubSection id="80BD4A97CA70FFCBFF6087666A243E00" pageId="7" pageNumber="260" type="nomenclature">
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<paragraph id="C818191CCA70FFCBFF6087666D363F21" blockId="7.[136,851,1076,1103]" box="[136,851,1076,1103]" pageId="7" pageNumber="260">
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<heading id="9350AE70CA70FFCBFF6087666D363F21" bold="true" box="[136,851,1076,1103]" fontSize="11" level="1" pageId="7" pageNumber="260" reason="1">
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<emphasis id="FAD3C50ECA70FFCBFF6087666D363F21" bold="true" box="[136,851,1076,1103]" pageId="7" pageNumber="260">
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<taxonomicName id="0FA7629FCA70FFCBFF6087666C323F21" ID-CoL="45WX3" authority="Bahls & Potapova" authorityName="Bahls & Potapova" authorityYear="2015" box="[136,599,1076,1103]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="subwalkeri" status="sp. nov.">
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<emphasis id="FAD3C50ECA70FFCBFF6087666F103F21" bold="true" box="[136,373,1076,1103]" italics="true" pageId="7" pageNumber="260">Navicula subwalkeri</emphasis>
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Bahls & Potapova
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</taxonomicName>
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,
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<taxonomicNameLabel id="E1E07875CA70FFCBFD8B87676CDF3F21" box="[611,698,1077,1103]" pageId="7" pageNumber="260" rank="species">
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<emphasis id="FAD3C50ECA70FFCBFD8B87676C193F21" bold="true" box="[611,636,1077,1103]" italics="true" pageId="7" pageNumber="260">sp</emphasis>
|
||
.
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<emphasis id="FAD3C50ECA70FFCBFD6187676CD63F21" bold="true" box="[649,691,1077,1103]" italics="true" pageId="7" pageNumber="260">nov</emphasis>
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||
.
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||
</taxonomicNameLabel>
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||
(
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<figureCitation id="509C0599CA70FFCBFD2187646D2E3F21" box="[713,843,1078,1103]" captionStart-0="FIGURES 34–46" captionStart-1="FIGURES 47–52" captionStartId-0="9.[136,243,1854,1875]" captionStartId-1="10.[136,243,1727,1748]" captionTargetBox-0="[216,1370,281,1750]" captionTargetBox-1="[189,1376,190,1689]" captionTargetId-0="figure-14@9.[189,1398,281,1793]" captionTargetId-1="figure-17@10.[189,1398,190,1702]" captionTargetPageId-0="9" captionTargetPageId-1="10" captionText-0="FIGURES 34–46. Navicula subwalkeri, LM. 34. Holotype specimen. 42. Close-up of central area. 45, 46. Preserved specimens with intact but somewhat degraded chloroplasts. 34, 37, 41, 45, 46. North Umpqua River, Oregon. 35, 36, 38–40, 42, 44. Clearwater River, Oregon. 43. Pliocene diatomite, Chiloquin, Oregon (ANSP! GC63230). Scale bars: Fig. 42 = 5 μm; all others = 10 μm." captionText-1="FIGURES 47–52. Navicula subwalkeri, SEM, North Umpqua River, Oregon. 47–49. External valve views. 50–52. Internal valve views. Scale bars: Figs 47, 50 = 10 μm; all others = 2 μm." figureDoi-0="http://doi.org/10.5281/zenodo.13635646" figureDoi-1="http://doi.org/10.5281/zenodo.13635648" httpUri-0="https://zenodo.org/record/13635646/files/figure.png" httpUri-1="https://zenodo.org/record/13635648/files/figure.png" pageId="7" pageNumber="260">Figs 34–52</figureCitation>
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)
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="C818191CCA70FFCBFF6087D36A243E00" blockId="7.[136,1452,1153,1498]" pageId="7" pageNumber="260">
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Valves lanceolate with subrostrate apices. Length 101–165 μm, width 17–27 μm. Valve face convex in transapical plane, gradually merging with the mantle. Axial area narrow, widening gradually from apices to central area. Central area small, rhombic. Raphe lateral and slightly bowed, concave to the primary side. Proximal raphe ends inflated and bent towards the secondary side. Distal raphe ends shaped like question marks. Striae radiate, becoming parallel, then convergent near the apices,
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<quantity id="0F5FB4F9CA70FFCBFB3C87BF6B7B3E6C" box="[1236,1310,1261,1282]" metricMagnitude="-1" metricUnit="m" metricValue="2.413" metricValueMax="2.794" metricValueMin="2.032" pageId="7" pageNumber="260" unit="in" value="9.5" valueMax="11.0" valueMin="8.0">8–11 in</quantity>
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10 μm. Striae curved, alternately long and short around central area. Internally, striae partially covered by axial plate. Edges of axial plate visible in LM as longitudinal lines at about one-third distance from axial area to valve margin. Areolae apically elongated,
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<quantity id="0F5FB4F9CA70FFCBFAE586676B073E24" box="[1293,1378,1333,1354]" metricMagnitude="-1" metricUnit="m" metricValue="6.096" metricValueMax="6.604" metricValueMin="5.588" pageId="7" pageNumber="260" unit="in" value="24.0" valueMax="26.0" valueMin="22.0">22–26 in</quantity>
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10 μm. Cells solitary with two plate-like chloroplasts lying along the girdle on each side of the valve.
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</paragraph>
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</subSubSection>
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<subSubSection id="80BD4A97CA70FFCBFF60862F6CE13EB4" pageId="7" pageNumber="260" type="materials_examined">
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<paragraph id="C818191CCA70FFCBFF60862F6CE13EB4" blockId="7.[136,1452,1153,1498]" pageId="7" pageNumber="260">
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||
<emphasis id="FAD3C50ECA70FFCBFF60862F6EDF3EFC" bold="true" box="[136,186,1405,1426]" pageId="7" pageNumber="260">Type</emphasis>
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||
:—
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<collectingCountry id="B0B0598CCA70FFCBFF30862F6F693EFC" box="[216,268,1405,1426]" name="United States of America" pageId="7" pageNumber="260">USA</collectingCountry>
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.
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<collectingRegion id="0A63D7FECA70FFCBFEFC862F6F3B3EFC" box="[276,350,1405,1426]" country="United States of America" name="Oregon" pageId="7" pageNumber="260">Oregon</collectingRegion>
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, Douglas County: North Umpqua River,
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<geoCoordinate id="AD937FDBCA70FFCBFD0A862F6D273EFC" box="[738,834,1405,1426]" degrees="43.311" direction="north" orientation="latitude" pageId="7" pageNumber="260" precision="55" value="43.311">43.311º N</geoCoordinate>
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,
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<geoCoordinate id="AD937FDBCA70FFCBFCA3862F6DD93EFC" box="[843,956,1405,1426]" degrees="122.155" direction="west" orientation="longitude" pageId="7" pageNumber="260" precision="55" value="-122.155">122.155º W</geoCoordinate>
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,
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<quantity id="0F5FB4F9CA70FFCBFC2D862F6A683EFC" box="[965,1037,1405,1426]" metricMagnitude="3" metricUnit="m" metricValue="1.262" pageId="7" pageNumber="260" unit="m" value="1262.0">1262 m</quantity>
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a.s.l.,
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<emphasis id="FAD3C50ECA70FFCBFBA1862F6A3D3EFC" box="[1097,1112,1405,1426]" italics="true" pageId="7" pageNumber="260">
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||
<collectionCode id="AEB681D9CA70FFCBFBA1862F6A3D3EFC" box="[1097,1112,1405,1426]" country="USA" lsid="urn:lsid:biocol.org:col:15406" name="Harvard University - Arnold Arboretum" pageId="7" pageNumber="260" type="Herbarium">A</collectionCode>
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</emphasis>
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.
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<taxonomicName id="0FA7629FCA70FFCBFB8B862F6AD63EFC" box="[1123,1203,1405,1426]" genus="Johnson" kingdom="Plantae" pageId="7" pageNumber="260" phylum="Chlorophyta" rank="genus">
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<emphasis id="FAD3C50ECA70FFCBFB8B862F6AD63EFC" box="[1123,1203,1405,1426]" italics="true" pageId="7" pageNumber="260">Johnson</emphasis>
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</taxonomicName>
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,
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<emphasis id="FAD3C50ECA70FFCBFB55862F6B213EFC" box="[1213,1348,1405,1426]" italics="true" pageId="7" pageNumber="260">
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<date id="BC193FDCCA70FFCBFB55862F6B213EFC" box="[1213,1348,1405,1426]" pageId="7" pageNumber="260" value="2011-08-05">5 August 2011</date>
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</emphasis>
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||
(
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<typeStatus id="171CA7BECA70FFCBFAA7862F6BCD3EFC" box="[1359,1448,1405,1426]" pageId="7" pageNumber="260" type="holotype">holotype</typeStatus>
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: circled specimen on
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<collectionCode id="AEB681D9CA70FFCBFE6486F36FAB3ED8" box="[396,462,1441,1462]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" lsid="urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="7" pageNumber="260">ANSP</collectionCode>
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!
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<collectionCode id="AEB681D9CA70FFCBFE3386F36F983ED8" box="[475,509,1441,1462]" country="0" name="Goucher College" pageId="7" pageNumber="260">GC</collectionCode>
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65222, illustrated in
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<figureCitation id="509C0599CA70FFCBFD2586F36D723ED8" box="[717,791,1441,1462]" captionStart="FIGURES 34–46" captionStartId="9.[136,243,1854,1875]" captionTargetBox="[216,1370,281,1750]" captionTargetId="figure-14@9.[189,1398,281,1793]" captionTargetPageId="9" captionText="FIGURES 34–46. Navicula subwalkeri, LM. 34. Holotype specimen. 42. Close-up of central area. 45, 46. Preserved specimens with intact but somewhat degraded chloroplasts. 34, 37, 41, 45, 46. North Umpqua River, Oregon. 35, 36, 38–40, 42, 44. Clearwater River, Oregon. 43. Pliocene diatomite, Chiloquin, Oregon (ANSP! GC63230). Scale bars: Fig. 42 = 5 μm; all others = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13635646" httpUri="https://zenodo.org/record/13635646/files/figure.png" pageId="7" pageNumber="260">Fig. 34</figureCitation>
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.
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<typeStatus id="171CA7BECA70FFCBFCCB86F36D123ED8" box="[803,887,1441,1462]" pageId="7" pageNumber="260" type="isotype">Isotypes</typeStatus>
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: circled specimens on
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<collectionCode id="AEB681D9CA70FFCBFBB586F36ADF3ED8" box="[1117,1210,1441,1462]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15655" lsid="urn:lsid:biocol.org:col:15655" name="University of Montana" pageId="7" pageNumber="260" type="Herbarium">MONTU</collectionCode>
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! 41-100, MDC! 126-94.
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<typeStatus id="171CA7BECA70FFCBFF5586976F7B3EB4" box="[189,286,1477,1498]" pageId="7" pageNumber="260" type="paratype">Paratypes</typeStatus>
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||
:
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<collectionCode id="AEB681D9CA70FFCBFECF86976FE13EB4" box="[295,388,1477,1498]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15655" lsid="urn:lsid:biocol.org:col:15655" name="University of Montana" pageId="7" pageNumber="260" type="Herbarium">MONTU</collectionCode>
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! 11-51, MDC! T-3-14-18).
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="80BD4A97CA70FFCBFF6085586AA43D4D" box="[136,1217,1546,1571]" pageId="7" pageNumber="260" type="etymology">
|
||
<paragraph id="C818191CCA70FFCBFF6085586AA43D4D" blockId="7.[136,1452,1546,2075]" box="[136,1217,1546,1571]" pageId="7" pageNumber="260">
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||
<emphasis id="FAD3C50ECA70FFCBFF6085586F6C3D4D" bold="true" box="[136,265,1546,1571]" pageId="7" pageNumber="260">Etymology</emphasis>
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||
:—This species is named for its appearance as a smaller version of
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<taxonomicName id="0FA7629FCA70FFCBFC1285586ADF3D4D" box="[1018,1210,1546,1571]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
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<emphasis id="FAD3C50ECA70FFCBFC1285586ADF3D4D" box="[1018,1210,1546,1571]" italics="true" pageId="7" pageNumber="260">Navicula walkeri</emphasis>
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</taxonomicName>
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||
.
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</paragraph>
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</subSubSection>
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<subSubSection id="80BD4A97CA70FFCBFF55857C6AA93375" pageId="7" pageNumber="260" type="distribution">
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||
<paragraph id="C818191CCA70FFCBFF55857C6A153DE1" blockId="7.[136,1452,1546,2075]" pageId="7" pageNumber="260">
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||
<emphasis id="FAD3C50ECA70FFCBFF55857C6F3C3D29" bold="true" box="[189,345,1582,1607]" pageId="7" pageNumber="260">Distribution:</emphasis>
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||
—Clearwater and North Umpqua Rivers,
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<collectingRegion id="0A63D7FECA70FFCBFCAD857C6DF83D29" box="[837,925,1582,1607]" country="United States of America" name="Oregon" pageId="7" pageNumber="260">Oregon</collectingRegion>
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; fossil in Pliocene diatomite near Chiloquin,
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<collectingRegion id="0A63D7FECA70FFCBFF6085006EB93D05" box="[136,220,1618,1643]" country="United States of America" name="Oregon" pageId="7" pageNumber="260">Oregon</collectingRegion>
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(ANSP! GC63230,
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<figureCitation id="509C0599CA70FFCBFE5785006C6A3D05" box="[447,527,1618,1643]" captionStart="FIGURES 34–46" captionStartId="9.[136,243,1854,1875]" captionTargetBox="[216,1370,281,1750]" captionTargetId="figure-14@9.[189,1398,281,1793]" captionTargetPageId="9" captionText="FIGURES 34–46. Navicula subwalkeri, LM. 34. Holotype specimen. 42. Close-up of central area. 45, 46. Preserved specimens with intact but somewhat degraded chloroplasts. 34, 37, 41, 45, 46. North Umpqua River, Oregon. 35, 36, 38–40, 42, 44. Clearwater River, Oregon. 43. Pliocene diatomite, Chiloquin, Oregon (ANSP! GC63230). Scale bars: Fig. 42 = 5 μm; all others = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13635646" httpUri="https://zenodo.org/record/13635646/files/figure.png" pageId="7" pageNumber="260">Fig. 43</figureCitation>
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) (slide GC63230 was deposited at ANSP by A.D. Mahood and was made from the Chiloquin diatomite sample N 1020 collected in 1978 by E.P Jones; see
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<bibRefCitation id="AC3664EDCA70FFCBFC5985246A083DE1" author="Mahood, A. D." box="[945,1133,1654,1679]" pageId="7" pageNumber="260" pagination="379 - 383" refId="ref6401" refString="Mahood, A. D. (1981) Stephanodiscus rhombus, a new diatom species from Pliocene deposits at Chiloquin, Oregon. Micropaleontology 27 (4): 379 - 383. http: // dx. doi. org / 10.2307 / 1485192" type="journal article" year="1981">Mahood (1981))</bibRefCitation>
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||
.
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||
</paragraph>
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||
<paragraph id="C818191CCA70FFCBFF5585C86AA93375" blockId="7.[136,1452,1546,2075]" pageId="7" pageNumber="260">
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||
<emphasis id="FAD3C50ECA70FFCBFF5585C86F393DDD" bold="true" box="[189,348,1690,1715]" pageId="7" pageNumber="260">Observations</emphasis>
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||
:—
|
||
<taxonomicName id="0FA7629FCA70FFCBFE6885C86C093DDD" authorityName="Bahls & Potapova" authorityYear="2015" box="[384,620,1690,1715]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="subwalkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFE6885C86C093DDD" box="[384,620,1690,1715]" italics="true" pageId="7" pageNumber="260">Navicula subwalkeri</emphasis>
|
||
</taxonomicName>
|
||
has frustular morphology so far described only for
|
||
<taxonomicName id="0FA7629FCA70FFCBFB3085C86B373DDD" box="[1240,1362,1690,1715]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFB3085C86A8E3DDD" box="[1240,1259,1690,1715]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFB1685C86B373DDD" box="[1278,1362,1690,1715]" italics="true" pageId="7" pageNumber="260">walkeri</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="0FA7629FCA70FFCBFA7A85C86F743DB9" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="jakovljevicii">
|
||
<emphasis id="FAD3C50ECA70FFCBFA7A85C86BC03DDD" box="[1426,1445,1690,1715]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFF6085EC6F743DB9" box="[136,273,1726,1751]" italics="true" pageId="7" pageNumber="260">jakovljevicii</emphasis>
|
||
</taxonomicName>
|
||
. All three species have an internal axial plate partially occluding the striae, with its edges visible as longitudinal lines on both sides of the axial area.
|
||
<taxonomicName id="0FA7629FCA70FFCBFD2185B06D0D3D95" authorityName="Bahls & Potapova" authorityYear="2015" box="[713,872,1762,1787]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="subwalkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFD2185B06CB93D95" box="[713,732,1762,1787]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFD0585B06D0D3D95" box="[749,872,1762,1787]" italics="true" pageId="7" pageNumber="260">subwalkeri</emphasis>
|
||
</taxonomicName>
|
||
is most similar to
|
||
<taxonomicName id="0FA7629FCA70FFCBFBAE85B06AD83D95" box="[1094,1213,1762,1787]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFBAE85B06A3C3D95" box="[1094,1113,1762,1787]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFB8185B06AD83D95" box="[1129,1213,1762,1787]" italics="true" pageId="7" pageNumber="260">walkeri</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="509C0599CA70FFCBFB2785B06B303D95" box="[1231,1365,1762,1787]" captionStart-0="FIGURES 53–64" captionStart-1="FIGURES 65–70" captionStartId-0="11.[136,243,1727,1748]" captionStartId-1="12.[136,243,1854,1875]" captionTargetBox-0="[189,1376,190,1689]" captionTargetBox-1="[189,1398,317,1798]" captionTargetId-0="figure-14@11.[189,1398,190,1702]" captionTargetId-1="figure-56@12.[189,1398,317,1829]" captionTargetPageId-0="11" captionTargetPageId-1="12" captionText-0="FIGURES 53–64. Navicula walkeri, LM. 60. Close-up of central area of valve in 63. 61, 62. Iconotypes, Sovereign 1958. 63, 64. Same valve at different levels of focus. 53. North Umpqua River, Oregon. 54, 55, 57–59. Snow Creek, Oregon. 56. Pit River diatomite, California (ANSP! Boyer 338). 60, 63, 64. Lake Creek, Oregon." captionText-1="FIGURES 65–70. Navicula walkeri, SEM. Snow Creek, Oregon. 65–67. External valve views. 68–70. Internal valve views. Scale bars: Figs 65, 68 = 10 μm; all others = 5 μm." figureDoi-0="http://doi.org/10.5281/zenodo.13635650" figureDoi-1="http://doi.org/10.5281/zenodo.13635652" httpUri-0="https://zenodo.org/record/13635650/files/figure.png" httpUri-1="https://zenodo.org/record/13635652/files/figure.png" pageId="7" pageNumber="260">Figs 53–70</figureCitation>
|
||
), but is distinguished from it by its narrower valves and axial plate, protracted apices, smaller central area, curved striae, and higher density of areolae (
|
||
<tableCitation id="85252CA7CA70FFCBFE0384786C213C2D" box="[491,580,1834,1859]" captionStart="TABLE 3" captionStartId="7.[136,224,159,182]" captionText="TABLE 3. Diagnostic features, habitat, ecology, and geographic and temporal distributions of N. volcanica and N. subwalkeri compared to similar species. Distinguishing diagnostic features are given in bold face type. Distribution key: CA = California, OR = Oregon, WA = Washington. Sources: Bahls (2011d); Kociolek et al. (1998); Lange-Bertalot (2001); Mahood (1981); Patrick & Reimer (1966); A. Schmidt et al. (1874–1959); Sovereign (1958); VanLandingham (1990); and specimens presented in this paper." pageId="7" pageNumber="260">Table 3</tableCitation>
|
||
). Since the axial plate in
|
||
<taxonomicName id="0FA7629FCA70FFCBFC9A84786A743C2D" authorityName="Bahls & Potapova" authorityYear="2015" box="[882,1041,1834,1859]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="subwalkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFC9A84786DE03C2D" box="[882,901,1834,1859]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFC7E84786A743C2D" box="[918,1041,1834,1859]" italics="true" pageId="7" pageNumber="260">subwalkeri</emphasis>
|
||
</taxonomicName>
|
||
is narrower than in
|
||
<taxonomicName id="0FA7629FCA70FFCBFAE884786B1D3C2D" box="[1280,1400,1834,1859]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFAE884786B763C2D" box="[1280,1299,1834,1859]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFACC84786B1D3C2D" box="[1316,1400,1834,1859]" italics="true" pageId="7" pageNumber="260">walkeri</emphasis>
|
||
</taxonomicName>
|
||
, the longitudinal lines visible in LM are closer to the axial area; in
|
||
<taxonomicName id="0FA7629FCA70FFCBFCA3841C6DA43C09" box="[843,961,1870,1895]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFCA3841C6D3B3C09" box="[843,862,1870,1895]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFC85841C6DA43C09" box="[877,961,1870,1895]" italics="true" pageId="7" pageNumber="260">walkeri</emphasis>
|
||
</taxonomicName>
|
||
they are closer to the valve margins (
|
||
<bibRefCitation id="AC3664EDCA70FFCBFA82841C6EAA3CE5" author="Bahls, L." pageId="7" pageNumber="260" refId="ref5404" refString="Bahls, L. (2011 d) Navicula walkeri. Diatoms of the United States, University of Colorado, Boulder. Available from: http: // westerndiatoms. colorado. edu / taxa / species / navicula _ walkeri (accessed 27 February 2015)" type="url" year="2011">Bahls 2011d</bibRefCitation>
|
||
,
|
||
<bibRefCitation id="AC3664EDCA70FFCBFF3684206FAB3CE5" author="Kociolek, J. P. & Spaulding, S. A. & Kingston, J. C." box="[222,462,1906,1931]" pageId="7" pageNumber="260" pagination="235 - 245" refId="ref6210" refString="Kociolek, J. P., Spaulding, S. A., & Kingston, J. C. (1998) Valve morphology and systematic position of Navicula walkeri (Bacillariophyceae), a diatom endemic to Oregon and California (USA). Nova Hedwigia 67: 235 - 245." type="journal article" year="1998">
|
||
Kociolek
|
||
<emphasis id="FAD3C50ECA70FFCBFEA684206FE73CE5" box="[334,386,1906,1931]" italics="true" pageId="7" pageNumber="260">et al</emphasis>
|
||
. 1998
|
||
</bibRefCitation>
|
||
). Another difference between the two species is the absence of marginal lamina in
|
||
<taxonomicName id="0FA7629FCA70FFCBFA7A84206F663CC1" authorityName="Bahls & Potapova" authorityYear="2015" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="subwalkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFA7A84206BC03CE5" box="[1426,1445,1906,1931]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFF6084C46F663CC1" box="[136,259,1942,1967]" italics="true" pageId="7" pageNumber="260">subwalkeri</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="509C0599CA70FFCBFEFA84C46FF63CC1" box="[274,403,1942,1967]" captionStart="FIGURES 47–52" captionStartId="10.[136,243,1727,1748]" captionTargetBox="[189,1376,190,1689]" captionTargetId="figure-17@10.[189,1398,190,1702]" captionTargetPageId="10" captionText="FIGURES 47–52. Navicula subwalkeri, SEM, North Umpqua River, Oregon. 47–49. External valve views. 50–52. Internal valve views. Scale bars: Figs 47, 50 = 10 μm; all others = 2 μm." figureDoi="http://doi.org/10.5281/zenodo.13635648" httpUri="https://zenodo.org/record/13635648/files/figure.png" pageId="7" pageNumber="260">Figs 50, 51</figureCitation>
|
||
) and their presence in
|
||
<taxonomicName id="0FA7629FCA70FFCBFD7D84C46D6F3CC1" box="[661,778,1942,1967]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFD7D84C46CCD3CC1" box="[661,680,1942,1967]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFD5E84C46D6F3CC1" box="[694,778,1942,1967]" italics="true" pageId="7" pageNumber="260">walkeri</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="509C0599CA70FFCBFCF284C46DFB3CC1" box="[794,926,1942,1967]" captionStart="FIGURES 65–70" captionStartId="12.[136,243,1854,1875]" captionTargetBox="[189,1398,317,1798]" captionTargetId="figure-56@12.[189,1398,317,1829]" captionTargetPageId="12" captionText="FIGURES 65–70. Navicula walkeri, SEM. Snow Creek, Oregon. 65–67. External valve views. 68–70. Internal valve views. Scale bars: Figs 65, 68 = 10 μm; all others = 5 μm." figureDoi="http://doi.org/10.5281/zenodo.13635652" httpUri="https://zenodo.org/record/13635652/files/figure.png" pageId="7" pageNumber="260">Figs 68, 69</figureCitation>
|
||
). Raphe structure is similar in both species: an uninterrupted internal slit (
|
||
<figureCitation id="509C0599CA70FFCBFE5C84E86C693CBD" box="[436,524,1978,2003]" captionStart="FIGURES 47–52" captionStartId="10.[136,243,1727,1748]" captionTargetBox="[189,1376,190,1689]" captionTargetId="figure-17@10.[189,1398,190,1702]" captionTargetPageId="10" captionText="FIGURES 47–52. Navicula subwalkeri, SEM, North Umpqua River, Oregon. 47–49. External valve views. 50–52. Internal valve views. Scale bars: Figs 47, 50 = 10 μm; all others = 2 μm." figureDoi="http://doi.org/10.5281/zenodo.13635648" httpUri="https://zenodo.org/record/13635648/files/figure.png" pageId="7" pageNumber="260">Figs 52</figureCitation>
|
||
,
|
||
<figureCitation id="509C0599CA70FFCBFDF084E86C503CBD" box="[536,565,1978,2003]" captionStart="FIGURES 65–70" captionStartId="12.[136,243,1854,1875]" captionTargetBox="[189,1398,317,1798]" captionTargetId="figure-56@12.[189,1398,317,1829]" captionTargetPageId="12" captionText="FIGURES 65–70. Navicula walkeri, SEM. Snow Creek, Oregon. 65–67. External valve views. 68–70. Internal valve views. Scale bars: Figs 65, 68 = 10 μm; all others = 5 μm." figureDoi="http://doi.org/10.5281/zenodo.13635652" httpUri="https://zenodo.org/record/13635652/files/figure.png" pageId="7" pageNumber="260">70</figureCitation>
|
||
) and large terminal nodules (
|
||
<figureCitation id="509C0599CA70FFCBFC9684E86DB03CBD" box="[894,981,1978,2003]" captionStart="FIGURES 47–52" captionStartId="10.[136,243,1727,1748]" captionTargetBox="[189,1376,190,1689]" captionTargetId="figure-17@10.[189,1398,190,1702]" captionTargetPageId="10" captionText="FIGURES 47–52. Navicula subwalkeri, SEM, North Umpqua River, Oregon. 47–49. External valve views. 50–52. Internal valve views. Scale bars: Figs 47, 50 = 10 μm; all others = 2 μm." figureDoi="http://doi.org/10.5281/zenodo.13635648" httpUri="https://zenodo.org/record/13635648/files/figure.png" pageId="7" pageNumber="260">Figs 51</figureCitation>
|
||
,
|
||
<figureCitation id="509C0599CA70FFCBFC0984E86A653CBD" box="[993,1024,1978,2003]" captionStart="FIGURES 65–70" captionStartId="12.[136,243,1854,1875]" captionTargetBox="[189,1398,317,1798]" captionTargetId="figure-56@12.[189,1398,317,1829]" captionTargetPageId="12" captionText="FIGURES 65–70. Navicula walkeri, SEM. Snow Creek, Oregon. 65–67. External valve views. 68–70. Internal valve views. Scale bars: Figs 65, 68 = 10 μm; all others = 5 μm." figureDoi="http://doi.org/10.5281/zenodo.13635652" httpUri="https://zenodo.org/record/13635652/files/figure.png" pageId="7" pageNumber="260">69</figureCitation>
|
||
), although the proximal raphe ends of
|
||
<taxonomicName id="0FA7629FCA70FFCBFF60848C6F463C99" authorityName="Bahls & Potapova" authorityYear="2015" box="[136,291,2014,2039]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="subwalkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFF60848C6EFE3C99" box="[136,155,2014,2039]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFF40848C6F463C99" box="[168,291,2014,2039]" italics="true" pageId="7" pageNumber="260">subwalkeri</emphasis>
|
||
</taxonomicName>
|
||
are smaller and not as strongly bent to one side as those of
|
||
<taxonomicName id="0FA7629FCA70FFCBFC5B848C6A423C99" box="[947,1063,2014,2039]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFC5B848C6DA33C99" box="[947,966,2014,2039]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFC3B848C6A423C99" box="[979,1063,2014,2039]" italics="true" pageId="7" pageNumber="260">walkeri</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="509C0599CA70FFCBFBDD848C6AD03C99" box="[1077,1205,2014,2039]" captionStart="FIGURES 47–52" captionStartId="10.[136,243,1727,1748]" captionTargetBox="[189,1376,190,1689]" captionTargetId="figure-17@10.[189,1398,190,1702]" captionTargetPageId="10" captionText="FIGURES 47–52. Navicula subwalkeri, SEM, North Umpqua River, Oregon. 47–49. External valve views. 50–52. Internal valve views. Scale bars: Figs 47, 50 = 10 μm; all others = 2 μm." figureDoi="http://doi.org/10.5281/zenodo.13635648" httpUri="https://zenodo.org/record/13635648/files/figure.png" pageId="7" pageNumber="260">Figs 47, 49</figureCitation>
|
||
,
|
||
<figureCitation id="509C0599CA70FFCBFB57848C6B6D3C99" box="[1215,1288,2014,2039]" captionStart="FIGURES 65–70" captionStartId="12.[136,243,1854,1875]" captionTargetBox="[189,1398,317,1798]" captionTargetId="figure-56@12.[189,1398,317,1829]" captionTargetPageId="12" captionText="FIGURES 65–70. Navicula walkeri, SEM. Snow Creek, Oregon. 65–67. External valve views. 68–70. Internal valve views. Scale bars: Figs 65, 68 = 10 μm; all others = 5 μm." figureDoi="http://doi.org/10.5281/zenodo.13635652" httpUri="https://zenodo.org/record/13635652/files/figure.png" pageId="7" pageNumber="260">65, 67</figureCitation>
|
||
). Although the two species are sympatric,
|
||
<taxonomicName id="0FA7629FCA70FFCBFE5F8B506C4E3375" box="[439,555,2050,2075]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="walkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFE5F8B506FAF3375" box="[439,458,2050,2075]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFE3F8B506C4E3375" box="[471,555,2050,2075]" italics="true" pageId="7" pageNumber="260">walkeri</emphasis>
|
||
</taxonomicName>
|
||
has a much wider distribution than
|
||
<taxonomicName id="0FA7629FCA70FFCBFC558B506A3C3375" authorityName="Bahls & Potapova" authorityYear="2015" box="[957,1113,2050,2075]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="7" pageNumber="260" phylum="Ochrophyta" rank="species" species="subwalkeri">
|
||
<emphasis id="FAD3C50ECA70FFCBFC558B506DB53375" box="[957,976,2050,2075]" italics="true" pageId="7" pageNumber="260">N</emphasis>
|
||
.
|
||
<emphasis id="FAD3C50ECA70FFCBFC368B506A3C3375" box="[990,1113,2050,2075]" italics="true" pageId="7" pageNumber="260">subwalkeri</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<tableCitation id="85252CA7CA70FFCBFB8F8B506ADA3375" box="[1127,1215,2050,2075]" captionStart="TABLE 2" captionStartId="3.[136,224,914,937]" captionText="TABLE 2. New (this paper) and published distribution records for Navicula volcanica, N. ludloviana, N. subwalkeri, and N. walkeri. *Navicula walkeri was also reported from the designated locations by Kociolek et al. (1998)." pageId="7" pageNumber="260">Table 2</tableCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |