期刊
WETLANDS
卷 35, 期 2, 页码 323-334出版社
SPRINGER
DOI: 10.1007/s13157-014-0620-4
关键词
Climate change; Microelectrodes; Nitrogen; Oxygen; Sulfide
资金
- New York Sea Grant [R/CMC-11]
- National Science Foundation IDBR (EAGER) [1011787]
- Direct For Biological Sciences
- Div Of Biological Infrastructure [1011787] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [1119739] Funding Source: National Science Foundation
Rising sea levels and stronger storm surges may expose tidal freshwater wetlands to saline waters, possibly leading to increased sulfate reduction and higher sulfide (H2S) concentrations. To better understand the effects of salinity on nitrogen cycling, porewater chemistry and sediment profiles of H2S and dissolved oxygen (O-2) were measured along a salinity gradient in the Hudson River (New York, USA). Additionally, laboratory experiments exposed freshwater sediments to varying salinities after which sediment O-2 and H2S dynamics along with nitrification and denitrification were measured. Overall, sites with higher salinities had lower oxygen availability (both as concentration and oxic sediment depth) and higher sulfide concentrations. Both nitrification and denitrification were depressed at higher salinities suggesting that exposure to saline water may alter nitrogen cycling of tidally influenced wetlands in the brackish region of the Hudson River estuary which may result in reduced retention of nitrogen.
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