Nutrient pathways and their susceptibility to past and future change in the Eurasian Arctic Ocean.
Nutrient pathways and their susceptibility to past and future change in the Eurasian Arctic Ocean.
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DOI：
10.1007/s13280-021-01673-0
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发表时间：
2022-03
期刊：
影响因子：
6.5
通讯作者：
März C
中科院分区：
文献类型：
--
作者：
Tuerena RE;Mahaffey C;Henley SF;de la Vega C;Norman L;Brand T;Sanders T;Debyser M;Dähnke K;Braun J;März C
气候变化正在改变北冰洋内的营养循环，对北极生态系统产生连锁反应。北极的初级生产主要是氮有限的，特别是在西太平洋占主导地位的地区，反硝化加剧了氮的损失。欧亚北极东部的营养状况仍在争论之中。在巴伦支海，初级生产自1998年以来增加了88%。为了支持这种生产力的快速增长，要么是营养物质的常备库存已经耗尽，要么是外部营养物质供应增加。大西洋水的流入、混合的加强、底栖氮循环和陆地-海洋相互作用有可能通过增加、稀释或去除改变营养物的供应。在这里，我们使用来自变化中的北冰洋计划的新数据集以及历史数据集来评估硝酸盐和磷酸盐浓度如何响应这些过程而变化。我们强调了营养动态如何继续变化，为什么这对区域和国际决策很重要，并建议未来的相关研究重点。在线版本包含补充材料，可通过10.1007/s13280-021-01673-0获得。
Climate change is altering nutrient cycling within the Arctic Ocean, having knock-on effects to Arctic ecosystems. Primary production in the Arctic is principally nitrogen-limited, particularly in the western Pacific-dominated regions where denitrification exacerbates nitrogen loss. The nutrient status of the eastern Eurasian Arctic remains under debate. In the Barents Sea, primary production has increased by 88% since 1998. To support this rapid increase in productivity, either the standing stock of nutrients has been depleted, or the external nutrient supply has increased. Atlantic water inflow, enhanced mixing, benthic nitrogen cycling, and land–ocean interaction have the potential to alter the nutrient supply through addition, dilution or removal. Here we use new datasets from the Changing Arctic Ocean program alongside historical datasets to assess how nitrate and phosphate concentrations may be changing in response to these processes. We highlight how nutrient dynamics may continue to change, why this is important for regional and international policy-making and suggest relevant research priorities for the future. The online version contains supplementary material available at 10.1007/s13280-021-01673-0.