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Climate-drivenbenthic invertebrateactivity andbiogeochemicalfunctioning acrossthe Barents Sea polarfront Martin SolanEllie R. WardChristina L. Wood2020 год

Climate-driven benthic invertebrate activity and biogeochemical functioning across the Barents Sea polar front
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Аннотация: Arctic marine ecosystems are undergoing rapid correction in response to multiple expressions of climate change, but the consequences of altered biodiversity for the sequestration, transformation and storage of nutrients are poorly constrained. Here, we determine the bioturbation activity of sediment-dwelling invertebrate communities over two consecutive summers that contrasted in sea-ice extent along a transect intersecting the polar front. We find a clear separation in community composition at the polar front that marks a transition in the type and amount of bioturbation activity, and associated nutrient concentrations, sufficient to distinguish a southern high from a northern low. While patterns in community structure reflect proximity to arctic versus boreal conditions, our observations strongly suggest that faunal activity is moderated by seasonal variations in sea ice extent that influence food supply to the benthos. Our observations help visualize how a climate-driven reorganization of the Barents Sea benthic ecosystem may be expressed, and emphasize the rapidity with which an entire region could experience a functional transformation. As strong benthic-pelagic coupling is typical across most parts of the Arctic shelf, the response of these ecosystems to a changing climate will have important ramifications for ecosystem functioning and the trophic structure of the entire food web. This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning'.
Год издания: 2020
Авторы: Martin Solan, Ellie R. Ward, Christina L. Wood, Adam J. Reed, Laura J. Grange, Jasmin A. Godbold
Издательство: Royal Society
Источник: Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences
Ключевые слова: Marine Biology and Ecology Research, Isotope Analysis in Ecology, Marine and fisheries research
Другие ссылки: Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences (PDF)
Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences (HTML)
Europe PMC (PubMed Central) (PDF)
Europe PMC (PubMed Central) (HTML)
PubMed Central (HTML)
Bangor University Research Portal (Bangor University) (PDF)
Bangor University Research Portal (Bangor University) (HTML)