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Influence of water quality, local knowledge and river-floodplain connectivity on commercial wild crayfish harvesting in the Atchafalaya River Basin
Fisheries Management and Ecology ( IF 2 ) Pub Date : 2020-04-12 , DOI: 10.1111/fme.12422
Ivan A. Vargas‐Lopez 1 , William E. Kelso 1 , Christopher P. Bonvillain 2 , Richard F. Keim 1 , Michael D. Kaller 1
Affiliation  

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 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.

中文翻译:

水质、当地知识和河流泛滥平原连通性对阿查法拉亚河流域商业野生小龙虾捕捞的影响

水质和河流连通性影响渔业,但它们在野生小龙虾捕捞中的作用尚不清楚,也不了解水质和河流连通性如何纳入小龙虾捕捞策略。在路易斯安那州,通过实地观察和采访个体采伐者来评估野生采伐实践。实地观察包括陷阱位置、水质、水稳定同位素(2016 年)和两个季节(2015 年和 2016 年)的栖息地组成部分。捕集起始点和捕集阱位置的捕集阱设置在浑浊度较低的水中(NTU 40% 的受访者;浊度和连通性的替代品)。可能是基于当地的环境知识,收割机似乎会跟踪泛滥平原内外的横向水运动。
更新日期:2020-04-12
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