<documentid="AD930F3A549E3EB3EDD0A6BAB788C9A8"ID-DOI="10.11646/phytotaxa.372.2.1"ID-ISSN="1179-3163"ID-Zenodo-Dep="13728822"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.treatmentCitations_approvedBy="felipe"IM.treatments_approvedBy="felipe"checkinTime="1725682255182"checkinUser="felipe"docAuthor="Al-Handal, Adil Y., Thomas, Evan W. & Pennesi, Chiara"docDate="2018"docId="0392662BFF862F7CFF61F3BFFAFFFAD6"docLanguage="en"docName="phytotaxa.372.2.1.pdf"docOrigin="Phytotaxa 372 (2)"docSource="http://dx.doi.org/10.11646/phytotaxa.372.2.1"docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article"docStyleId="96748F8F1B6C902996E134952A3A36B9"docStyleName="Phytotaxa.2014-.journal_article"docStyleVersion="13"docTitle="Nitzschia sigma W. Smith 1853"docType="treatment"docVersion="2"lastPageNumber="139"masterDocId="FFAB1E53FF9A2F60FFE9F02CFFEEFF8A"masterDocTitle="Marine benthic diatoms in the newly discovered coral reefs, off Basra coast, Southern Iraq"masterLastPageNumber="152"masterPageNumber="111"pageNumber="139"updateTime="1725694383496"updateUser="ExternalLinkService"zenodo-license-figures="UNSPECIFIED"zenodo-license-treatments="UNSPECIFIED">
<mods:titleid="8C16362B482387B23E5BBB53512961EE">Marine benthic diatoms in the newly discovered coral reefs, off Basra coast, Southern Iraq</mods:title>
<mods:namePartid="7F7ED0A7E471748316A24FFFDF6D090D">Al-Handal, Adil Y.</mods:namePart>
<mods:affiliationid="A17FD68B89D49B7960ACB435FF3805DB">Department of Biological and Environmental Sciences, University of Gothenburg, Sweden</mods:affiliation>
<mods:affiliationid="D8E81DA30AF824EE8DA893A5BB52B943">Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italia</mods:affiliation>
<taxonomicNameid="4C3BACBEFF862F7CFF61F3BFFD70FC26"authority="(Kutzing) W. Smith (1853: 39)"authorityName="W. Smith"authorityPageNumber="39"authorityYear="1853"baseAuthorityName="Kutzing"box="[136,670,915,940]"class="Insecta"family="Menoponidae"genus="Nitzschia"kingdom="Animalia"order="Psocodea"pageId="28"pageNumber="139"phylum="Arthropoda"rank="species"species="sigma">
<bibRefCitationid="EFAAAACCFF862F7CFE36F3BFFD70FC26"author="Smith, W."box="[479,670,915,940]"pageId="28"pageNumber="139"refId="ref27281"refString="Smith, W. (1853) Synopsis of British Diatomaceae. John Van Voorst, London, 89 pp."type="book"year="1853">Smith (1853: 39)</bibRefCitation>
: Krammer & Large-Bertalot 1988, p. 32, pl. 23, figs 1–9;
<bibRefCitationid="EFAAAACCFF862F7CFCCFF396FC10FC45"author="Witkowski, A. & Lange-Bertalot, H. & Metzeltin, D."box="[806,1022,954,975]"pageId="28"pageNumber="139"pagination="1 - 925"refId="ref27775"refString="Witkowski, A., Lange-Bertalot, H. & Metzeltin, D. (2000) Diatom Flora of Marine Coasts Iconographia Diatomologica 7: 1 - 925."type="book chapter"year="2000">
<bibRefCitationid="EFAAAACCFF862F7CFAE0F396FA49FC45"author="Hein, M. K. & Winsborough, B. M. & Sullivan, M. J."box="[1289,1447,954,975]"pageId="28"pageNumber="139"pagination="1 - 303"refId="ref24413"refString="Hein, M. K., Winsborough, B. M. & Sullivan, M. J. (2008) Bacillariophyta (diatoms) of the Bahamas. Iconographia Diatomologica 19: 1 - 303."type="journal article"year="2008">
were described based on striae density and whether valves (in valve view) are sigmoid or straight. It is sometimes difficult to identify these varieties and some of them might belong to a different species, which requires further investigation of this complex using SEM diagnosis or molecular data. Striae density is rather variable and in some specimens, these are hardly counted under light microscope.
<emphasisid="B94F0B2FFF862F7CFF54F533FE0FFAB2"box="[189,481,1311,1336]"italics="true"pageId="28"pageNumber="139">Ecology and Distribution:</emphasis>
A widely distributed species in marine and brackish water habitats. Previously reported from the Gulf (
<bibRefCitationid="EFAAAACCFF862F7CFED8F56FFE25FAD6"author="Hendey, N. I."box="[305,459,1347,1372]"pageId="28"pageNumber="139"pagination="101 - 168"refId="ref24607"refString="Hendey, N. I. (1970) Some littoral diatoms of Kuwait. Nova Hedwigia 31: 101 - 168"type="journal article"year="1970">Hendey 1970</bibRefCitation>
, Al-Yamani & Saburova 2011, Al-Handal 2011). Common in