identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
947187A5FFDF1770C7BCFE7CF572FDA1.text	947187A5FFDF1770C7BCFE7CF572FDA1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Halamphora valdeminutissima Zidarova, Pottiez, P. Ivanov, M. de Haan & Van de Vijver 2023	<div><p>Halamphora valdeminutissima Zidarova, Pottiez, P.Ivanov, M.de Haan &amp; Van de Vijver, sp.nov.</p> <p>(Figs 2–11, 16–19)</p></div> 	https://treatment.plazi.org/id/947187A5FFDF1770C7BCFE7CF572FDA1	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	Zidarova, Ralitsa;Pottiez, Margaux;Ivanov, Plamen;Haan, Myriam De;Vijver, Bart Van De	Zidarova, Ralitsa, Pottiez, Margaux, Ivanov, Plamen, Haan, Myriam De, Vijver, Bart Van De (2023): Amphora micrometra Giffen and Halamphora valdeminutissima sp. nov., two tiny benthic diatom species observed in the Black Sea. Phytotaxa 626 (3): 199-207, DOI: 10.11646/phytotaxa.626.3.6, URL: https://phytotaxa.mapress.com/pt/article/download/phytotaxa.626.3.6/51311
947187A5FFD91776C7BCFF12F095FC5F.text	947187A5FFD91776C7BCFF12F095FC5F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphora micrometra Giffen 1967	<div><p>Amphora micrometra Giffen (1967: 253) emend. Á cs, K.T.Kiss &amp; Levkov in Á cs et al. (2011: 200)</p> <p>(Figs 12–15, 20–21)</p> <p>References: — Snoeijs &amp; Potapova 1995, p. 26, Ács et al. (2011), p. 200, figs 9–11, 30–34</p> <p>LM observations (Figs 12–15):— Valves narrowly semi-elliptic with moderately convex dorsal side and nearly straight ventral side, and rounded apices. Valve dimensions (n=6): 7.5–11.5 µm, width 1.5–2.0 µm. Raphe straight (Fig. 15) or slightly arcuate (Fig. 12), positioned close to the ventral side of the valve. Other morphological features not discernible in LM.</p> <p>SEM observations (Figs 20–21):— Due to the rarity of the species in the sample, only three valves were observed by SEM. Externally (Fig. 20), valve face flat with a gradual transition between the valve face and valve mantle. Marginal ridge absent. Axial area very narrow, almost linear (Fig. 20, white arrows). Dorsal striae positioned between raised virgae, parallel to slightly radiate, ca 60 in 10 µm (n=3). Ventral striae parallel to weakly radiate, 70–80 in 10 µm (n=3). Finer areolar structure could not be resolved. Raphe straight, with straight, slightly expanded central raphe endings. Terminal raphe fissures could barely be observed (on Fig. 20 at right upper corner), hooked to the dorsal side. Internally (Fig. 21), central raphe endings straight, terminating onto central fused helictoglossae (Fig. 21, black arrow). Terminal raphe endings straight, terminating onto very weakly developed helictoglossae (Fig. 21, grey arrow). A single portula present at each valve apex near the distal raphe ends (Fig. 21, white arrows).</p> <p>Ecology and distribution:— Based on literature data listed in Ács et al. (2011), A. micrometra is a widely distributed species with records from all around the world under variable environmental conditions. However, without a careful morphological check, it is difficult to confirm all these records. In Europe, the species has been recorded with certainty in the Baltic Sea (Snoeijs &amp; Potapova 1995, Witkowski et al. 2000). The current observation seems to be the first verified record from the Black Sea. The species, observed at both studied sites (samples C3.1 and M4.3), was more rarely present in the samples compared to Halamphora valdeminutissima (Zidarova, pers. obs.).</p> </div>	https://treatment.plazi.org/id/947187A5FFD91776C7BCFF12F095FC5F	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	Zidarova, Ralitsa;Pottiez, Margaux;Ivanov, Plamen;Haan, Myriam De;Vijver, Bart Van De	Zidarova, Ralitsa, Pottiez, Margaux, Ivanov, Plamen, Haan, Myriam De, Vijver, Bart Van De (2023): Amphora micrometra Giffen and Halamphora valdeminutissima sp. nov., two tiny benthic diatom species observed in the Black Sea. Phytotaxa 626 (3): 199-207, DOI: 10.11646/phytotaxa.626.3.6, URL: https://phytotaxa.mapress.com/pt/article/download/phytotaxa.626.3.6/51311
