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首页> 外文期刊>Mathematical research letters: MRL >Identifying potential causes of fish declines through local ecological knowledge of fishers in the Ganga River, eastern Bihar, India
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Identifying potential causes of fish declines through local ecological knowledge of fishers in the Ganga River, eastern Bihar, India

机译：识别鱼类在印度甘河河河河河的当地生态知识下降的潜在原因

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摘要

Local ecological knowledge (LEK) can offer insights into fisheries management by describing long-term changes that are difficult to unravel in data-poor river-floodplain fisheries. LEK is derived from complex interactions between fishers' observations of environmental change and their institutional capacities to manage fisheries. Hence, it is important to understand where and how LEK and formal scientific studies on fish species' decline could complement each other. In this paper, the causes of decline of 58 fish and two shrimp taxa were identified from LEK data (1999-2019) obtained from river-floodplain fisheries of the Gangetic plains (Bihar, India). Qualitative analyses of LEK were used to generate species-specific hypotheses and historical insights on their declines. Destructive fishing, overfishing and the Farakka barrage were cited by fishers as the major causes of declines. Potential reasons for these perceptions were explored in relation to fishers' experiences of conflicts in the region over fishing rights and access.
机译：当地生态知识（LEK）可以通过描述在数据贫困的河流渔业中难以解剖的长期变化来提供渔业管理的见解。莱克源于渔民对环境变革的观察与管理渔业的制度能力之间的复杂相互作用。因此，重要的是要理解勒克斯和如何对鱼类的衰退的地点和正式的科学研究可以相互补充。在本文中，从河普利特平原河流渔业（Bihar，India）获得的lek数据（1999-2019）中鉴定了58条鱼和两种虾分类群的原因。利用莱克的定性分析用于生成特定的物种的假设和历史洞察力。渔民引用了破坏性的钓鱼，过度捕捞和Farakka Barrage作为下降的主要原因。探讨了这些看法的潜在原因，探讨了渔民在该地区冲突的经验，在捕捞权和获取。

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