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Adapting to change in inland fisheries: analysis from Lake Tanganyika, East Africa

机译：适应内陆渔业的变化：从东非坦万卡湖分析

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摘要

Fisheries around the world are declining due to growing anthropogenic pressures including climate change and overexploitation. Understanding how small-scale fishers respond to this unprecedented challenge is critical for developing more effective management strategies in vulnerable socio-ecological systems. While considerable research is focused on adaptation to change in marine contexts, greater attention is urgently needed on regionally important but often neglected inland fisheries. This study analyzes the adaptation intentions of littoral fishers on Lake Tanganyika, a biodiversity hotspot and one of the largest inland fisheries in Africa. Data were collected through in-person surveys of 154 littoral fishers across 11 major landing sites in Tanzania. Based on the Theory of Planned Behavior, we identified and tested 15 individual and site-level factors as potential indicators of adaptation intentions to a hypothetical 50% decline in catch. Our results show that fishers with other (non-fishing) primary livelihoods are more likely to adapt in ways that decrease fishing pressure, increase income, and are supported by family and friends. Homeowners were also more likely to adapt in ways that lessen fishing pressure. Our findings highlight the importance of fostering regional adaptation strategies that increase primary livelihood alternatives and capital outside the fishery, while discouraging investment in adaptations focused on increasing catch amount or fishing income.
机译：由于越来越多的人为压力，包括气候变化和过度兴奋，世界各地的渔业正在下降。了解小规模的渔民如何应对这个前所未有的挑战对于在脆弱的社会生态系统中制定更有效的管理策略至关重要。虽然相当大的研究专注于适应海洋环境的变化，但迫切需要更加关注区域重要但经常被忽视的内陆渔业。本研究分析了唐万卡湖，生物多样性热点和非洲最大的内陆渔业之一的沿海渔民的适应意图。通过坦桑尼亚11大陆景点的154个沿海渔民的人员调查收集数据。基于计划行为理论，我们确定并测试了15个个人和场地层面因素，作为适应意图的潜在指标，以对捕获的假设50％下降。我们的结果表明，渔民与其他（非钓鱼）的主要生计更有可能以减少钓鱼压力，增加收入的方式适应，并由家人和朋友支持。房主也更有可能以减少钓鱼压力的方式适应。我们的调查结果强调了培养区域适应策略的重要性，以增加渔业以外的主要生命替代品和资本，同时劝阻对适应性的投资，重点是增加捕捞量或渔业收入。

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