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Historical perspective of artisanal encircling gillnet use at the Brazilian coast: Changes in fishing behaviour is mirrored by dwindling stocks
Fisheries Management and Ecology ( IF 2 ) Pub Date : 2019-10-01 , DOI: 10.1111/fme.12393 José Amorim Reis‐Filho 1, 2
Fisheries Management and Ecology ( IF 2 ) Pub Date : 2019-10-01 , DOI: 10.1111/fme.12393 José Amorim Reis‐Filho 1, 2
Affiliation
Managing coastal resources sometimes requires looking into the past, as this provides a baseline against which present conditions may be gauged. The present study evaluated the circumstances that led Brazilian coastal fishers to modify their use of encircling gillnets. Other stressors (i.e. water pollution and habitat degradation) acted synergistically on the fisheries dynamic between 1950 and 2016. Declining catches of several species were observed through fishers' historical perception and through fisheries landing records. Three notable trends in net handling were associated with distinct historical periods. Specifically, pressures from modern fishery practices and gear (e.g. monofilament nets), the adoption of spiral setting arrangements and the increasing use of trammel nets appear responsible for the decline of many stocks. Mullet, seabass, jack and pilchard stocks decreased over time and were associated the changes witnessed in the encircling net operations. These changes occurred in response to overexploitation of fish stocks, to exploit the dwindling fisheries resources. The study also discusses the reasons leading fishers to accept how encircling gillnets ought to be used, their interpretation of such changes and the implications these changes have for fisheries management.
中文翻译:
巴西海岸手工环绕刺网使用的历史视角:捕捞行为的变化反映在种群减少
管理沿海资源有时需要回顾过去,因为这提供了可以衡量当前状况的基线。本研究评估了导致巴西沿海渔民改变使用环绕刺网的情况。其他压力因素(即水污染和栖息地退化)对 1950 年至 2016 年间的渔业动态产生协同作用。通过渔民的历史认知和渔业上岸记录观察到几个物种的捕捞量下降。净处理的三个显着趋势与不同的历史时期有关。具体而言,来自现代渔业实践和渔具(例如单丝网)、螺旋设置安排的采用以及越来越多地使用绷网的压力似乎是许多种群数量下降的原因。鲻,鲈鱼、杰克和沙丁鱼的存量随着时间的推移而减少,这与环网作业中目睹的变化有关。这些变化是为了应对鱼类种群的过度开发,以开发日益减少的渔业资源。该研究还讨论了导致渔民接受应如何使用环绕刺网的原因、他们对此类变化的解释以及这些变化对渔业管理的影响。
更新日期:2019-10-01
中文翻译:
巴西海岸手工环绕刺网使用的历史视角:捕捞行为的变化反映在种群减少
管理沿海资源有时需要回顾过去,因为这提供了可以衡量当前状况的基线。本研究评估了导致巴西沿海渔民改变使用环绕刺网的情况。其他压力因素(即水污染和栖息地退化)对 1950 年至 2016 年间的渔业动态产生协同作用。通过渔民的历史认知和渔业上岸记录观察到几个物种的捕捞量下降。净处理的三个显着趋势与不同的历史时期有关。具体而言,来自现代渔业实践和渔具(例如单丝网)、螺旋设置安排的采用以及越来越多地使用绷网的压力似乎是许多种群数量下降的原因。鲻,鲈鱼、杰克和沙丁鱼的存量随着时间的推移而减少,这与环网作业中目睹的变化有关。这些变化是为了应对鱼类种群的过度开发,以开发日益减少的渔业资源。该研究还讨论了导致渔民接受应如何使用环绕刺网的原因、他们对此类变化的解释以及这些变化对渔业管理的影响。