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DOI10.1073/pnas.2303366121
Seafloor primary production in a changing Arctic Ocean
Attard, Karl; Singh, Rakesh Kumar; Gattuso, Jean-Pierre; Dexter, Karen Filbee -; Krause-Jensen, Dorte; Kuhl, Mikael; Archambault, Philippe; Babin, Marcel; Belanger, Simon; Berg, Peter; Glud, Ronnie N.; Hancke, Kasper; Janicke, Stefan; Qin, Jing; Sorensen, Esben B.; Tachon, Foucaut; Wenzhofer, Frank; Ardyna, Mathieu; Kuhi, Michel; Rysgaard, Soren
发表日期2024
ISSN0027-8424
EISSN1091-6490
起始页码121
结束页码11
卷号121期号:11
英文摘要Phytoplankton and sea ice algae are traditionally considered to be the main primary producers in the Arctic Ocean. In this Perspective, we explore the importance of benthic primary producers (BPPs) encompassing microalgae, macroalgae, and seagrasses, which represent a poorly quantified source of Arctic marine primary production. Despite scarce observations, models predict that BPPs are widespread, colonizing similar to 3 million km(2) of the extensive Arctic coastal and shelf seas. Using a synthesis of published data and a novel model, we estimate that BPPs currently contribute similar to 77 Tg C y(-1) of primary production to the Arctic, equivalent to similar to 20 to 35% of annual phytoplankton production. Macroalgae contribute similar to 43 Tg C y(-1), seagrasses contribute similar to 23 Tg C y(-1), and microalgae-dominated shelf habitats contribute similar to 11 to 16 Tg C y(-1). Since 2003, the Arctic seafloor area exposed to sunlight has increased by similar to 47,000 km(2) y(-1), expanding the realm of BPPs in a warming Arctic. Increased macrophyte abundance and productivity is expected along Arctic coastlines with continued ocean warming and sea ice loss. However, microalgal benthic primary production has increased in only a few shelf regions despite substantial sea ice loss over the past 20 y, as higher solar irradiance in the ice-free ocean is counterbalanced by reduced water transparency. This suggests complex impacts of climate change on Arctic light availability and marine primary production. Despite significant knowledge gaps on Arctic BPPs, their widespread presence and obvious contribution to coastal and shelf ecosystem production call for further investigation and for their inclusion in Arctic ecosystem models and carbon budgets.
英文关键词marine primary production; Arctic ecosystems; macroalgae; seagrasses; microalgae
语种英语
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:001208974000001
来源期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (IF:9.58[JCR-2018],10.6[5-Year])
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/301614
作者单位University of Southern Denmark; University of Southern Denmark; Laval University; University of Quebec; Universite du Quebec a Rimouski; National University of Singapore; Centre National de la Recherche Scientifique (CNRS); Sorbonne Universite; Institute of Marine Research - Norway; University of Western Australia; University of Western Australia; Aarhus University; Aarhus University; University of Copenhagen; Laval University; University of Virginia; Tokyo University of Marine Science & Technology; Norwegian Institute for Water Research (NIVA); University of Southern Denmark; University of Manitoba; Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Max Planck Society
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GB/T 7714
Attard, Karl,Singh, Rakesh Kumar,Gattuso, Jean-Pierre,et al. Seafloor primary production in a changing Arctic Ocean[J],2024,121(11).
APA Attard, Karl.,Singh, Rakesh Kumar.,Gattuso, Jean-Pierre.,Dexter, Karen Filbee -.,Krause-Jensen, Dorte.,...&Rysgaard, Soren.(2024).Seafloor primary production in a changing Arctic Ocean.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(11).
MLA Attard, Karl,et al."Seafloor primary production in a changing Arctic Ocean".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.11(2024).
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