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DOI | 10.1073/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 |
ISSN | 0027-8424 |
EISSN | 1091-6490 |
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 |
推荐引用方式 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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