Recent distribution of Echinodermata species in Spitsbergen coastal waters

• Published in: Polish Polar Research
• Main Authors: Deja Kajetan, Węsławski Jan Marcin, Borszcz Tomasz, Włodarska-Kowalczuk Maria, Kukliński Piotr, Bałazy Piotr, Kwiatkowska Patrycja
• Format: Article in Journal/Newspaper
• Language: English
• Published: Polish Academy of Sciences 2016
• Subjects: Arctic; fjords; Echinodermata; climate change; species distribution; megabenthos; Geology; QE1-996.5; Climate change; Polar Research; Spitsbergen
• Online Access: https://doi.org/10.1515/popore-2016-0027; https://doaj.org/article/fc1de4203fa248a2968a4188d4fad85e

Thirty-two species of echinoderms from epibenthic sledges, dredges, scuba diving, and other samples (in total: 467 samples and c. 20 000 specimens) from fjords and coastal waters off Spitsbergen were analysed between 1996 and 2014. The most numerous group of echinoderms in the coastal waters off Spitsbergen is brittle stars (78% of the total individuals). The echinoderms do not form any clear assemblages according to depth or distance from glacial sedimentation and substrate. Some species prefer hard bottom (Strongylocentrotus droebachiensis) or water free from glacial suspensions (Ophiopholis aculeata). In contrast to the species listed above, we also found opportunistic species such as the starfish Urasterias lincki and the brittle star Ophiocten sericeum. These two species are distributed quite uniformly, regardless of the environmental factors. The majority of the species prefer a soft bottom below 200 m.