智利半干旱地区河虾幼体放养的选址标准和建议:流域和参与式方法

IF 2.5 3区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Carlos Velásquez, Yeriko Alanís, Luis Henríquez-Antipa, P. Francisco Cárcamo
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引用次数: 0

摘要

在智利北部的半干旱流域捕捞对虾(Cryphiops caementarius)是一种小规模的个体渔业活动,这种渔业活动是在长期干旱的破碎生境中发展起来的,对对虾种群的保护构成了严重威胁。渔民对乔阿帕河流域的河道改道造成大量对虾死亡提出了环境投诉。政府与渔民一起推动了一项参与性计划,在该流域开展了重新放流活动,放流了约 4000 尾孵化育苗的幼虾。这项研究的目的是评估放流地点的选择标准,其中包括与幼鱼生活习性相关的生态变量。这些标准包括物种的自然历史背景、栖息地指标的季节性监测(河流栖息地指数和水力压力指数)以及渔民的建议(传统生态知识)。这项研究表明,在选择放流地点时,将这些标准与以水产养殖为基础的放流科学结合起来是有益的,因为放流地点的生态特征非常适合 C. caementarius 的生长。研究讨论了这一经验的结果,强调了在智利流域淡水甲壳类动物中采取此类措施的开创性特点、在人为影响严重的流域负责任地协助采取这些措施所使用的生态框架,以及考虑到影响智利这一地区的干旱情况,改进这一物种的释放和监测工作的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Site Selection Criteria and Recommendations for the Restocking of Juveniles of River Prawn Cryphiops caementarius in the Semiarid Region of Chile: A Basin and Participatory Approach

The fishery of the river prawn Cryphiops caementarius in semiarid basins of northern Chile constitutes a small-scale artisanal activity, developed in fragmented habitats with extended periods of drought, which represents a severe threat for the conservation of its populations. Fishers filed an environmental complaint for massive prawn mortalities caused by river channellings in the Choapa River basin. The government promoted a participatory program with fishers to carry out a restocking initiative in this basin, releasing ~4000 hatchery reared juveniles. The aim of this study was to evaluate site selection criteria for the releases, which included ecological variables relevant to the life habits of juveniles. These criteria incorporated background of the natural history of the species, seasonal monitoring of habitat indicators (fluvial habitat index and hydraulic stress index) and recommendations of fishers (traditional ecological knowledge). This study demonstrated that the integration of these criteria and restocking sciences based on aquaculture is beneficial when selecting the release site, with a high coincidence of ecological characteristics for C. caementarius to thrive. The results of this experience are discussed, emphasizing the pioneering character of this type of measure in freshwater crustaceans in Chilean basins, the ecological framework used to responsibly assist these measures in basins with intense anthropogenic impacts and recommendations that allow the improvement of the releases and monitoring efforts of this species, considering the drought scenario that affects this region of Chile.

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来源期刊
Aquatic Conservation-Marine and Freshwater Ecosystems
Aquatic Conservation-Marine and Freshwater Ecosystems 环境科学-海洋与淡水生物学
CiteScore
5.50
自引率
4.20%
发文量
143
审稿时长
18-36 weeks
期刊介绍: Aquatic Conservation: Marine and Freshwater Ecosystems is an international journal dedicated to publishing original papers that relate specifically to freshwater, brackish or marine habitats and encouraging work that spans these ecosystems. This journal provides a forum in which all aspects of the conservation of aquatic biological resources can be presented and discussed, enabling greater cooperation and efficiency in solving problems in aquatic resource conservation.
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