Drivers of change in the spatial dynamics of the Central Amazon artisanal fishing fleet

IF 2.2 2区农林科学 Q2 FISHERIES Fisheries Research Pub Date : 2024-11-16 DOI:10.1016/j.fishres.2024.107220

Samantha Aquino Pereira , Nídia Noemi Fabré , Vandick da Silva Batista , Sophie Lanco

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Abstract

The use of fishery resources by artisanal fishers in the Amazon is highly adaptive and may be influenced by environmental drivers such as river level fluctuations and seasonality, as well as anthropogenic factors like fuel prices and the creation of protected areas. These factors may limit access to habitats and species and thereby affect the spatial distribution of the fishing fleet. This study investigated whether and, if so, how the spatial distribution of the Central Amazon fishing fleet (CAFF) was affected by a series of environmental and anthropogenic variables over an 11-year period (1994–2004). We analyzed landings of the artisanal commercial fleet in Manaus and identified habitat types, target species, as well as hydrological anomalies, variations in fuel prices and the increase in the number of protected areas. In addition, we evaluated the drivers that determine the distribution of the CAFF. Our results demonstrated a contraction in the distance covered and surface explored by the CAFF, especially since 1998. River types, river levels, CPUE of river-lacustrine species, oil prices and hydrological anomalies had a significant effect on the dynamics of the CAFF.

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亚马逊中部手工捕鱼船队空间动态变化的驱动因素

亚马逊地区个体渔民对渔业资源的利用具有很强的适应性，可能会受到河流水位波动和季节性等环境因素以及燃料价格和保护区建立等人为因素的影响。这些因素可能会限制对栖息地和物种的获取，从而影响捕鱼船队的空间分布。本研究调查了亚马逊中部捕鱼船队（CAFF）的空间分布在 11 年内（1994-2004 年）是否受到一系列环境和人为变量的影响，如果受到影响，又是如何影响的。我们分析了玛瑙斯个体商业船队的上岸量，确定了栖息地类型、目标物种以及水文异常、燃料价格变化和保护区数量增加。此外，我们还评估了决定 CAFF 分布的驱动因素。我们的研究结果表明，特别是自 1998 年以来，CAFF 的活动距离和活动范围都在缩小。河流类型、河流水位、河流-湖泊物种的 CPUE、油价和水文异常对 CAFF 的动态有显著影响。

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来源期刊

Fisheries Research 农林科学-渔业

CiteScore

4.50

自引率

16.70%

发文量

294

审稿时长

15 weeks

期刊介绍： This journal provides an international forum for the publication of papers in the areas of fisheries science, fishing technology, fisheries management and relevant socio-economics. The scope covers fisheries in salt, brackish and freshwater systems, and all aspects of associated ecology, environmental aspects of fisheries, and economics. Both theoretical and practical papers are acceptable, including laboratory and field experimental studies relevant to fisheries. Papers on the conservation of exploitable living resources are welcome. Review and Viewpoint articles are also published. As the specified areas inevitably impinge on and interrelate with each other, the approach of the journal is multidisciplinary, and authors are encouraged to emphasise the relevance of their own work to that of other disciplines. The journal is intended for fisheries scientists, biological oceanographers, gear technologists, economists, managers, administrators, policy makers and legislators.