Elemental Composition of Particulate Matter in the Euphotic and Benthic Boundary Layers of the Barents and Norwegian Seas

The increasing influence of Atlantic inflows in the Arctic Ocean in recent decades has had a potential impact on regional biogeochemical cycles of major and trace elements. The warm and salty Atlantic water, entering the Eurasian Basin through the Norwegian Sea margin and the Barents Sea, affects pa...

Full description

Bibliographic Details
Published in:Journal of Marine Science and Engineering
Main Authors: Dina P. Starodymova, Marina D. Kravchishina, Anastasia I. Kochenkova, Alexey S. Lokhov, Natalia M. Makhnovich, Svetlana V. Vazyulya
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2023
Subjects:
suspended particulate matter
trace elements
major elements
euphotic layer
fluffy layer
particulate form
Naval architecture. Shipbuilding. Marine engineering
VM1-989
Oceanography
GC1-1581
Arctic
Arctic Ocean
Barents Sea
Norwegian Sea
Phytoplankton
Zooplankton
Online Access:https://doi.org/10.3390/jmse11010065
https://doaj.org/article/a596462220e54c2c920ac4e2c7ad8d0e
Description
Summary:The increasing influence of Atlantic inflows in the Arctic Ocean in recent decades has had a potential impact on regional biogeochemical cycles of major and trace elements. The warm and salty Atlantic water, entering the Eurasian Basin through the Norwegian Sea margin and the Barents Sea, affects particle transport, sink, phyto-, and zooplankton community structure and could have far-reaching consequences for the marine ecosystems. This study discusses the elemental composition of suspended particulate matter and fluffy-layer suspended matter derived from samples collected in the Barents Sea and northern Norwegian Sea in August 2017. The mosaic distribution of SPM elemental composition is mainly determined by two factors: (i) The essential spatial variability of biological processes (primary production, abundance, and phytoplankton composition) and (ii) differences in the input of terrigenous sedimentary matter to the sea area from drainage sources (weak river runoff, melting of archipelago glaciers, etc.). The distribution of lithogenic, bioessential, and redox-sensitive groups of elements in the particulate matter was studied at full-depth profiles. Marine cycling of strontium in the Barents Sea is shown to be significantly affected by increasing coccolithophorid bloom, which is associated with Atlantic water. Mn, Cu, Cd, and Ba significantly enrich the suspended particulate matter of the benthic nepheloid layer relative to the fluffy layer particulate matter within the benthic boundary layer.

Similar Items