Picophytoplankton distribution along Khatanga Bay-shelf-continental slope environment gradients in the western Laptev Sea.

Autor:	Belevich TA; Department of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.; Belozersky Institute for Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119234, Russia., Demidov АB; Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, 117997, Russia., Makkaveev PN; Department of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.; Belozersky Institute for Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.; Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, 117997, Russia., Shchuka SA; Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, 117997, Russia., Flint MV; Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, 117997, Russia.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2021 Feb 18; Vol. 7 (2), pp. e06224. Date of Electronic Publication: 2021 Feb 18 (Print Publication: 2021).
DOI:	10.1016/j.heliyon.2021.e06224
Abstrakt:	The spatial variations of photosynthetic picoplankton abundance and biomass and the picoplankton's contribution to chlorophyll a concentration along the transect from Khatanga Bay to the continental slope in the western part of the Laptev Sea were studied in September 2017. Picoeukaryotes dominated in the picophytoplankton communities. Picophytoplankton in Khatanga Bay showed more variability than those over the Laptev shelf and continental slope: abundance and biomass were the highest in the southern part of the bay and markedly decreased with increasing salinity in its northern part. Picocyanobacteria were found over the shelf and slope at temperatures of +2.4 to -1.6°С and salinity from 22 to 34. Picophytoplankton contribution to total chlorophyll a on the shelf was higher than in Khatanga Bay. The study of picophytoplankton of Khatanga Bay and in the western Laptev Sea can serve as a baseline for future assessment of the Laptev Sea ecosystem response to interannual and climate changes. Competing Interests: The authors declare no conflict of interest. (© 2021 Published by Elsevier Ltd.)
Databáze:	MEDLINE
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