期刊
ESTUARIES AND COASTS
卷 35, 期 2, 页码 401-415出版社
SPRINGER
DOI: 10.1007/s12237-011-9417-3
关键词
Arctic Ocean; Primary Production; Land-ocean coupling; Estuarine processes; Riverine nutrients; Dissolved organic matter; Photodegradation
资金
- NSERC
- [NSF-OPP-0229302]
- [NSF-OPP-0732985]
- Office of Polar Programs (OPP)
- Directorate For Geosciences [1107774, 0732583, 0732522] Funding Source: National Science Foundation
- Office of Polar Programs (OPP)
- Directorate For Geosciences [0732821] Funding Source: National Science Foundation
Although the Arctic Ocean is the most riverine-influenced of all of the world's oceans, the importance of terrigenous nutrients in this environment is poorly understood. This study couples estimates of circumpolar riverine nutrient fluxes from the PARTNERS (Pan-Arctic River Transport of Nutrients, Organic Matter, and Suspended Sediments) Project with a regionally configured version of the MIT general circulation model to develop estimates of the distribution and availability of dissolved riverine N in the Arctic Ocean, assess its importance for primary production, and compare these estimates to potential bacterial production fueled by riverine C. Because riverine dissolved organic nitrogen is remineralized slowly, riverine N is available for uptake well into the open ocean. Despite this, we estimate that even when recycling is considered, riverine N may support 0.5-1.5 Tmol C year(-1) of primary production, a small proportion of total Arctic Ocean photosynthesis. Rapid uptake of dissolved inorganic nitrogen coupled with relatively high rates of dissolved organic nitrogen regeneration in N-limited nearshore regions, however, leads to potential localized rates of riverine-supported photosynthesis that represent a substantial proportion of nearshore production.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据