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International Journal on Algae

年間 4 号発行

ISSN 印刷: 1521-9429

ISSN オンライン: 1940-4328

SJR: 0.168 SNIP: 0.377 CiteScore™:: 0.6 H-Index: 11

Indexed in

New Find of Rare Brown Alga Pleurocladia lacustris A.Braun (Phaeophyceae) from the Dnipro Estuary of the Black Sea (Ukraine)

巻 23, 発行 4, 2021, pp. 371-376
DOI: 10.1615/InterJAlgae.v23.i4.50
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要約

This article provides information relating to a new record of the freshwater brown alga Pleurocladia lacustris, rare for Ukraine. Globally, this species is known to be found in ~50 localities in Europe, North America, Australia and Africa. In many European countries, it is listed as endangered and included on the protected red lists. It was discovered in the brackish Dnipro Estuary of the Black Sea in summer 2020. Alga occurred in the coastal zone of Kinburn Spit at a depth of 0.2 m; at a water salinity of 4.68‰, temperature - 23 °C, pH - 7.9. Pleurocladia lacustris grew among the accumulations of green algae Cladophora glomerata (Linnaeus) Kützing and Ulva flexuosa Wulfen accompanying representatives of cyanobacterial genera Calothrix C.Agardh ex Bornet & Flahault and Oscillatoria Vaucher ex Gomont. This algal community inhabited a submerged concrete slab. The coastal zone of the estuary was overgrown with thickets of Potamogeton perfoliatus L., Ruppia maritima L. and Stuckenia pectinata (L.) Börner. Morphological observations revealed that the cells of this benthic filamentous algae in the brackish estuary conditions were not calcified, as is observed in freshwater populations, and were covered with a mucilaginous envelope. The ecological conditions of the habitat meet the known requirements of P. lacustris. This article contains a description of the studied alga, illustrated with photographs of the vegetative and generative organs of P. lacustris.

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