期刊
FISHERIES MANAGEMENT AND ECOLOGY
卷 27, 期 4, 页码 417-428出版社
WILEY
DOI: 10.1111/fme.12422
关键词
crustacean; fishing; floodplain; isotopes; local environmental knowledge; tracers
类别
资金
- National Institute of Food and Agriculture
- U.S. Army Corps of Engineers
Water quality and river connectivity influence fisheries, but their role is not understood in wild crayfish harvest, or how water quality and river connectivity are incorporated into crayfish harvest strategies. In Louisiana, wild harvesting practices were evaluated with field observations and interviews with individual harvesters. Field observations included trap locations, water quality, water stable isotopes (2016) and habitat components over two seasons (2015 and 2016). Traps were set in less turbid water (NTU < 69.4), in depths from 1 to 3 m or 3 to 3.6 m and in locations associated with river water inputs. Harvester interviews indicated the importance of tradition (35%-47% respondents), depth (88% respondents) and water colour (>40% respondents; a surrogate for turbidity and connectivity) in harvesting initiation and trap locations. Harvesters appeared to follow lateral water movements onto and within the floodplain, likely based on local environmental knowledge.
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