identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
276987D211383A5DFF72FE74FC590CC8.text	276987D211383A5DFF72FE74FC590CC8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Syvertsenia Witkowski & Gomes 2013	<div><p>Syvertsenia Witkowski &amp; Gomes gen. nov. (Figs 2–19)</p> <p>Cells with one tubular process positioned in the central part of one of the valves mantle (Figs 3, 4, Figs 6–8 and Fig. 10). Valves linear with rostrate, protracted to distinctly set off, capitate apices. Valve face is flat, the valve mantle relatively steep and in general shallow. In the valve centre (internal view) the mantle bears a convex expansion within which a tubular process and a single adjacent areola are observed (Figs 10, 12 and 13). The distribution of valve face areolae, which are probably closed with cribra, is approximately uniform/equidistant (Figs 10, 15). No fascia, pseudoseptum, pili or apical spines have been observed.</p> <p>= present, - = absent, + / - = present or absent, - / + = usually absent, Inc = incomplete). Adapted from Sabbe et al. (2010) and Hasle et</p> <p>al. (1983).</p> <p>Type species of the genus (designated here): ⎯ S yvertsenia iberica Witkowski &amp; Gomes sp. nov. Etymology: ⎯The genus is named in honor of Dr. Erik E. Syvertsen distinguished Norwegian diatomologist and one of the authors of the family Cymatosiraceae.</p> </div>	https://treatment.plazi.org/id/276987D211383A5DFF72FE74FC590CC8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Gomes, Ana;Witkowski, Andrzej;Dąbek, Przemysław;Boski, Tomasz;Moura, Delminda;Szkornik, Katie;Kurzydłowski, Krzysztof	Gomes, Ana, Witkowski, Andrzej, Dąbek, Przemysław, Boski, Tomasz, Moura, Delminda, Szkornik, Katie, Kurzydłowski, Krzysztof (2013): Syvertsenia iberica (Cymatosiraceae): a new estuarine diatom genus characterized by the position of its process. Phytotaxa 142 (1): 25-36, DOI: 10.11646/phytotaxa.142.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.142.1.3
276987D211393A5CFF72FC1BFCE20C17.text	276987D211393A5CFF72FC1BFCE20C17.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Syvertsenia iberica Witkowski & Gomes 2013	<div><p>Syvertsenia iberica Witkowski &amp; Gomes sp. nov. (Figs 2–19)</p> <p>Valves linear with protracted to capitate apices, 21.4–28.6 (25.2 ± 2.9) µm long, 3.1–4.5 (3.7 ± 0.6) µm wide. Valves slightly arched about transapical axis. The mantle is shallow, except next to the process where a convex expansion of the valve mantle with an areolae situated above the process is observed. The whole valve surface is covered with areolae, except a small part of the valve in the middle which is close to the tubular process. The number of areolae in 10 µm varies between 17 and 20. Close to the process, there is a small oval area devoid of areolae (Figs 4, 6–8 and 11). The single tubular process is positioned on the extension of the valve mantle (Figs 3, 4, Figs. 6–8 and Fig. 10). The valve linkage consists of one row of marginal, short, Y-shaped linking spines at each side of the valve (Fig. 14). The row of linking spines terminates close to the ocelluli (Figs. 17 and 19). There are two ocelluli (with ca. 20 porelli each and small spines inside— Figs 16–19) set on the apices. The ocelluli are slightly displaced from the valve centre (Figs 10, 16–19).</p> <p>Type: ⎯ SPAIN. <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-7.4061112&amp;materialsCitation.latitude=37.194725" title="Search Plazi for locations around (long -7.4061112/lat 37.194725)">Ayamonte</a>: <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-7.4061112&amp;materialsCitation.latitude=37.194725" title="Search Plazi for locations around (long -7.4061112/lat 37.194725)">Guadiana Estuary</a>, sandy flat near the river mouth (Fig. 1B), station GS1 (37º11’41’’N, 7º24’22’’W, Fig 1C). <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-7.4061112&amp;materialsCitation.latitude=37.194725" title="Search Plazi for locations around (long -7.4061112/lat 37.194725)">Sample</a> collected from surface sediment by Ana Isabel Gomes on the 26 th of May, 2010. Holotype SZCZ slide 18916, illustrated in Figures 6 and 7; isotype slide no. 13298/ ALGU in the ALGU Plant and Algae Collection (Fig. 2).</p> <p>Etymology: ⎯The specific epithet was chosen considering that Guadiana Estuary makes the border between the two countries that constitute the Iberian Peninsula.</p> <p>Distribution and ecology: ⎯Thus far, known only from the type habitat area i.e. Guadiana Estuary, stations GS1, GS2 and GS18 (Fig. 1C). In the referred stations, the salinity of the sediment interstitial water ranges between 19.93 (GS1) and 30.74 g /Kg (GS18) while pH values varies from 7.27 (GS18) to 7.58 (GS2). The substrate grain-size preference varies between medium silt (GS18) and fine sand (GS2). In terms of organic carbon percentage it ranges from 0.36 % (GS2) to 3.40 (GS18). Table 3 presents in detail the physicochemical parameters measured at each sampling station. The river water column adjacent to the sampling stations presents a mean salinity of 26.43 ± 11.13 g /Kg, a pH of 8.20 ± 0.27, dissolved oxygen of 98 ± 19.48 % and a mean temperature of 17.88 ± 5.13º C.</p></div> 	https://treatment.plazi.org/id/276987D211393A5CFF72FC1BFCE20C17	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Gomes, Ana;Witkowski, Andrzej;Dąbek, Przemysław;Boski, Tomasz;Moura, Delminda;Szkornik, Katie;Kurzydłowski, Krzysztof	Gomes, Ana, Witkowski, Andrzej, Dąbek, Przemysław, Boski, Tomasz, Moura, Delminda, Szkornik, Katie, Kurzydłowski, Krzysztof (2013): Syvertsenia iberica (Cymatosiraceae): a new estuarine diatom genus characterized by the position of its process. Phytotaxa 142 (1): 25-36, DOI: 10.11646/phytotaxa.142.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.142.1.3
