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Volodina A. A. Records of the brown alga Halosiphon tomentosus (Lyngbye) Jaasund (Phaeophyceae) in the South-Eastern Baltic Sea. Marine Biological Journal, 2022, vol. 7, no. 4, pp. 98-102. https://doi.org/10.21072/mbj.2022.07.4.08

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Abstract

For the first time, Halosiphon tomentosus (Lyngb.) Jaasund (Chorda tomentosa Lyngb.) was recorded in the South-Eastern Baltic Sea in May–June 2016, in several locations of the Sambia Peninsula northern coast. The species was found in the upper horizon of sublittoral on boulders in assemblages with green and brown algae (Ulva intestinalis, Ulva prolifera, Cladophora glomerata, Ectocarpus siliculosus, Pylaiella littoralis, and sometimes Pseudolithoderma subextensum and Hildenbrandia rubra). The species was recorded in 2017–2018 as well. The length of thread-like thalli ranged 3–30 cm, with the mean value of (9.2 ± 2.3) cm. The mean biomass was of (73.3 ± 41.9) g·m−2 in 2016 and (11 ± 8.8) g·m−2 in 2018. The reasons for H. tomentosus occurrence in the South-Eastern Baltic and its absence in the adjacent sea areas require further research.

Authors

A. A. Volodina
researcher, PhD

https://orcid.org/0000-0002-1948-6931

https://elibrary.ru/author_items.asp?id=707763

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Funding

The research is carried out within the framework of the state research assignment “Marine natural systems of the Baltic Sea and Atlantic Ocean: The formation of natural complexes of the Baltic Sea and their change under the effect of the Atlantic Ocean and anthropogenic load” (No. 0128-2021-0012).

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