这项研究提供了有关巴拉那河(阿根廷)内陆渔业结构的渔民知识和财政记录之间的比较。首先,我们根据主要的人口和经济指标对渔业种群进行了表征,确定两个不同的捕鱼区:拉普拉塔盆地下游的北部和南部。其次,我们对财政渔业记录(来自两个商业集:1930-1984和2011-2019)和当地渔民对内陆商业渔业的知识(发生频率和丰度)进行了比较分析。最后,我们对比了现行的捕鱼条例(允许的网眼和船只,捕鱼禁令,出口)给渔民的有效做法。研究区域包括位于巴拉那河中下游洪泛区的52个地点,在圣达菲省。社会经济分析确定了整个河流走廊中的两组不同的渔民。结果表明,渔民对术语有详细的了解,生态学,生殖策略,生境分布,和商业鱼类的实用性。通过将渔民的知识与财政记录进行对比,我们发现了有关渔业中丰度和发生频率变化的类似和互补信息。这些结果突出表明,需要将当地知识作为精心策划的捕鱼计划和可持续政策管理的杰出信息来源。
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■在线版本包含补充材料,可在10.1007/s11160-022-09722-x获得。
This study presents a comparison between fishers\' knowledge and fiscal records about the structure of inland fisheries in the Paraná River (Argentina). First of all, we characterized the fishing population according to the main demographic and economic indicators, identifying two different fishing areas: the northern and southern sections in the lower La Plata basin. Secondly, we carried out a comparative analysis of fiscal fishery records (from two commercial sets: 1930-1984 and 2011-2019) and local fishers\' knowledge on inland commercial fisheries (frequency of occurrence and abundance). Finally, we contrasted current fishing regulations (allowed meshes and boats, fishing prohibitions, exports) to fishers\' effective practices. The study area included 52 sites located along the floodplain of the middle and lower sections of the Paraná River, in the province of Santa Fe. Socioeconomic analyses identified two different groups of fishers throughout the river corridor. Results showed that fishers have detailed knowledge on nomenclature, ecology, reproductive strategy, habitat distribution, and usefulness of commercial fish species. By contrasting fishers\' knowledge with fiscal records, we found similar and complementary information about the changes in abundance and frequency of occurrence in fisheries. These results highlight the need of including local knowledge as an outstanding source of information for well-planned management of fishing programs and sustainable policies.
UNASSIGNED: UNASSIGNED: The online version contains supplementary material available at 10.1007/s11160-022-09722-x.