Hydrobiological Characteristics of the Main Fishery Waters in the West-Caspian Region (Phytoplankton)

Абдусамадов, С.; Абдурахманов, М.; Дохтукаева, М.; Дудурханова, А.

doi:10.18470/1992-1098-2011-3-37-49

Ûg Ross.: èkol. razvit.

2014

DOI: 10.18470/1992-1098-2011-3-37-49

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Hydrobiological Characteristics of the Main Fishery Waters in the West-Caspian Region (Phytoplankton)

С. Абдусамадов¹,

М. Абдурахманов²,

М. Дохтукаева³

et al.

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“…Later on, a detailed study on species diversity of diatoms of the Caspian Sea micro-phytobenthos was implemented (Karaeva, 1972). During the following years, the major part of the Caspian Sea macro-algae studies was within hydrobiology and covered species diversity and production potential of diatoms in the composition of phytoplankton community components (Abdusamadov et al, 2011;Bagheri at al., 2011Bagheri at al., , 2012Matishov et al, 2011;Zimina et al, 2021;Pautova et al, 2022;etc. ).…”

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confidence: 99%

Shionodiscus caspicus sp. nov. (Bacillariophyta, Thalassiosiraceae) from the Caspian Sea and four nomenclatural combinations for Shionodiscus

Gogorev,

Kovaleva

2024

Novosti sistematiki nizshikh rastenii

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The article focuses on a description of a new species, Shionodiscus caspicus Gogorev et Kovaleva, sp. nov., also providing LM and SEM photomicrographs. Based on (sub)central fultoportulae number, the authors distinguish three morphotypes of the species. A comparison with morphologically similar taxa is provided. The new species is similar to S. frenguellii, S. latimarginatus, S. oestrupii, and S. trifultus, but differs in the number of central fultoportulae, as well as the density of marginal fultoportulae and location of rimoportula. The taxonomic features of the genus Shionodiscus are discussed and one of the features — the length of fultoportula — is elaborated and specified in the generic diagnosis. Based on a series of morphological features, such as reduced or absent external tubes of strutted processes and location of rimoportula, the four combinations are proposed: Shionodiscus diporocyclus (Hasle) Gogorev, comb. nov., Shionodiscus ignotus (I. V. Makarova) Gogorev, comb. nov., Shionodiscus maculatus (G. A. Fryxell et J. R. Johans.) Gogorev, comb. nov., Shionodiscus subtilis (Ostenf.) Gogorev, comb. nov.

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mentioning

confidence: 99%

Shionodiscus caspicus sp. nov. (Bacillariophyta, Thalassiosiraceae) from the Caspian Sea and four nomenclatural combinations for Shionodiscus

Gogorev,

Kovaleva

2024

Novosti sistematiki nizshikh rastenii

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Missed taxon: on the generic affiliation of Oscillatoria tanganyikae var. caspica Usachev (Cyanobacteria)

Vinogradova¹,

Nuriyeva²

2020

Algologia

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Сообщение посвящено уточнению вопроса о систематическом положении каспийского эндемика Oscillatoria tanganyikae var. caspica Usachev. Таксон был описан из фитопланктона Северного Каспия в 1938 г. как разновидность редкого тропического вида O. tanganyikae G.S.West и с тех пор неоднократно указывался для этой части моря. Однако в определителях и флорах, посвященных цианопрокариотам, O. tanganyikae приводится без внутривидовых таксонов. В результате таксономической ревизии порядка Oscillatoriales этот вид был перекомбинирован как Phormidium tanganyikae (G.S.West) Anagnostidis et Komárek 1988 и отнесен к группе II этого рода. Позднее, в результате молекулярного, цитоморфологического и экологического анализов ряда штаммов, морфологически соответствующих видам группы II, был описан род Kamptonema Strunecký, Komárek et J.Smarda, к которому, по мнению его авторов, возможно, принадлежит P. tanganyikae. На основании анализа современных подходов к систематике цианобактерий, а также морфологических признаков, экологии и распространения таксона O. tanganyikae var. caspica обосновано его включение в род Kamptonema и предложена новая номенклатурная комбинация: Kamptonema caspicum (Usachev) O.Vinogradova et M.Nuriyeva comb. nov. К л ю ч е в ы е с л о в а : цианобактерии, Oscillatoria tanganyikae var. caspica, Kamptonema, новая номенклатурно-таксономическая комбинация, Каспийское море

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Hydrobiological Characteristics of the Main Fishery Waters in the West-Caspian Region (Phytoplankton)

Cited by 2 publications

References 0 publications

Shionodiscus caspicus sp. nov. (Bacillariophyta, Thalassiosiraceae) from the Caspian Sea and four nomenclatural combinations for Shionodiscus

Shionodiscus caspicus sp. nov. (Bacillariophyta, Thalassiosiraceae) from the Caspian Sea and four nomenclatural combinations for Shionodiscus

Missed taxon: on the generic affiliation of Oscillatoria tanganyikae var. caspica Usachev (Cyanobacteria)

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