Glacier retreat alters downstream fjord ecosystem structure and function in Greenland.

Autor: Meire L; Royal Netherlands Institute for Sea Research, Department of Estuarine and Delta Systems, Yerseke, the Netherlands.; Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland., Paulsen ML; Arctic Research Centre, Aarhus University, Aarhus, Denmark.; Marine Microbiology, Bergen University, Bergen, Norway., Meire P; Ecosystem Management Research Group, Department of Biology, University of Antwerp, Antwerpen, Belgium., Rysgaard S; Arctic Research Centre, Aarhus University, Aarhus, Denmark.; Centre for Earth Observation Science, CHR Faculty of Environment, Earth, and Resources, University of Manitoba, Winnipeg, Manitoba Canada., Hopwood MJ; School of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China., Sejr MK; Arctic Research Centre, Aarhus University, Aarhus, Denmark., Stuart-Lee A; Royal Netherlands Institute for Sea Research, Department of Estuarine and Delta Systems, Yerseke, the Netherlands., Sabbe K; Laboratory of Protistology & Aquatic Ecology, Ghent University, Ghent, Belgium., Stock W; Laboratory of Protistology & Aquatic Ecology, Ghent University, Ghent, Belgium., Mortensen J; Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland.
Jazyk: angličtina
Zdroj: Nature geoscience [Nat Geosci] 2023; Vol. 16 (8), pp. 671-674. Date of Electronic Publication: 2023 Jun 29.
DOI: 10.1038/s41561-023-01218-y
Abstrakt: The melting of the Greenland Ice Sheet is accelerating, with glaciers shifting from marine to land termination and potential consequences for fjord ecosystems downstream. Monthly samples in 2016 in two fjords in southwest Greenland show that subglacial discharge from marine-terminating glaciers sustains high phytoplankton productivity that is dominated by diatoms and grazed by larger mesozooplankton throughout summer. In contrast, melting of land-terminating glaciers results in a fjord ecosystem dominated by bacteria, picophytoplankton and smaller zooplankton, which has only one-third of the annual productivity and half the CO 2 uptake compared to the fjord downstream from marine-terminating glaciers.
Competing Interests: Competing interestsThe authors declare no competing interests.
(© The Author(s) 2023.)
Databáze: MEDLINE
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