期刊
MARINE POLLUTION BULLETIN
卷 105, 期 1, 页码 299-309出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2016.02.006
关键词
Seasonal hypoxia; Macrobenthos; Secondary production; Mississippi Bight; Gulf of Mexico
资金
- US Department of Commerce, National Oceanic and Atmospheric Administration's (NOAA) Northern Gulf Cooperative Institute (NGI) Program [09-NGI-13, NA060AR4320264]
Hypoxic conditions are escalating to the east of the Mississippi River within the Mississippi Bight. The objective of this study was to examine changes in macrobenthic function and structure relative to seasonal hypoxia over a 3.5 year period at the 10 m (Site 6) and 20 m (Site 8) isobaths within the Mississippi Bight. Seasonal hypoxia acted as a regular periodic disturbance during the study period, although the magnitude and duration of hypoxia varied inter-annually. Macrobenthic metrics revealed seasonal hypoxia effects on secondary production potential and community maturity, which agrees with previous studies. In addition, metrics were notably higher at the 20 m isobath during the latter half of the study period, following the Deepwater Horizon (DwH) oil spill. This study confirms hypoxia as a major driver affecting the function and structure of soft-bottom macrobenthos in the Mississippi Bight. (C) 2016 Elsevier Ltd. All rights reserved.
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