首页|The significant role of submarine groundwater discharge in an Arctic fjord nutrient budget

The significant role of submarine groundwater discharge in an Arctic fjord nutrient budget

扫码查看
Under global climate change,water flow and related nutrient biogeochemistry in the Arctic are changing at an unprecedented rate,and potentially affect nutrient cycling in the Arctic Ocean.However,nutrient fluxes via submarine groundwater discharge(SGD)are potentially important yet poorly understood in the Arctic.Here we quantified that nutrient fluxes through radium-derived SGD were three orders of magnitude higher than those from the local river and constituted 25%-96%of the total nutrient inputs into the Kongsfjorden.These large groundwater nutrient fluxes with high NIN/DIP molar ratio(average 99)may change the biomass and community structure of phytoplankton.Meanwhile,combining other SGD study cases around the Arctic region,SGD rates tend to increase over the past three decades,possibly on account of the effects of global warming.The SGD-derived nutrient may cause the increase of net primary productivity in the Arctic Ocean.The results will provide important basic data for land-ocean interactions in the typical fjord of the Arctic under the influence of global warming.

Arcticsubmarine groundwaternutrient biogeochemistryprimary productivityradium isotopesglobal climate change

Xueqing Yu、Jian'an Liu、Zhuoyi Zhu、Xiaogang Chen、Tong Peng、Jinzhou Du

展开 >

College of Geography and Environmental Science,Key Laboratory of Tropical Island Land Surface Processes and Environmental Changes of Hainan Province,Hainan Normal University,Haikou 571158,China

State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China

State Key Laboratory of Marine Resource Utilization in South China Sea,Hainan University,Haikou 570228,China

Shanghai Key Laboratory of Polar Life and Environment Sciences,School of Oceanography,Shanghai Jiao Tong University,Shanghai 200030,China

MNR Key Laboratory for Polar Science,Polar Research Institute of China,Shanghai 200136,China

Key Laboratory of Coastal Environment and Resources of Zhejiang Province,School of Engineering,Westlake University,Hangzhou 310024,China

展开 >

2024

海洋学报(英文版)
中国海洋学会

海洋学报(英文版)

CSTPCD
影响因子:0.323
ISSN:0253-505X
年,卷(期):2024.43(10)