亚热带海洋保护区的扩大和实施对受威胁鲨鱼物种的初步影响

IF 1.4 4区 环境科学与生态学 Q3 ECOLOGY
Fabio S. Motta, Fernanda A. Rolim, Ana Clara S. Athayde, Maisha Gragnolati, Rafael R. Munhoz, Luiza D. Chelotti, Nauther Andres, Guilherme H. Pereira-Filho, Otto B. F. Gadig
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引用次数: 0

摘要

平衡的生态系统有利于中层和高层食肉动物,有助于维持栖息地的质量。因此,鲨鱼的存在可以被视为环境健康的一个指标。随着野生动物保护区的建立和执法力度的加强,禁渔区面积从 12 平方公里扩大到 675 平方公里,在此之后,我们使用有饵远程水下立体视频(BRUV)评估了大西洋西南部恶魔岛群岛鲨鱼的相对丰度,并将我们的发现与之前的 BRUV 调查进行了比较。这项研究在 150 次立体 BRUV 部署中的 16 次(10.7%)中观察到鲨鱼,并记录了 7 个物种(白鳞鲨、金牛鲨、梅花鳞鲨、镰刀形鳞鲨、猪鲨、鳍鲨和颧鲨)。这些数据以及经常潜水和经验丰富的潜水员(管理人员和潜水操作员)对鲨鱼目击次数增加的看法表明,禁渔区最近对这些掠食者产生了积极影响,生态系统也更加健康。结果还表明,对恶魔岛野生动物保护区的长期监测和有效执法对于保持和加强该地区的积极影响至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Initial effects of the expansion and enforcement of a subtropical marine reserve on threatened shark species

Initial effects of the expansion and enforcement of a subtropical marine reserve on threatened shark species

Balanced ecosystems benefit meso and top predators, which help to maintain the quality of the habitat. Thus, the presence of sharks can be considered an indicator of environmental health. Baited remote underwater stereo-videos (BRUVs) were used to assess the relative abundance of sharks in the Alcatrazes Archipelago, Southwestern Atlantic, after an important no-take zone expansion from 12 to 675 km2 with the creation of the Wildlife Refuge and enhanced enforcement, comparing our findings with previous BRUV surveys. This study observed sharks in 16 (10.7%) of the 150 stereo-BRUV deployments and recorded seven species (Squalus cf. albicaudus, Carcharias taurus, Carcharhinus plumbeus, Carcharhinus falciformis, Rhizoprionodon porosus, Sphyrna lewini, and Sphyrna zygaena). These data, combined with the perception of frequent and experienced divers (management staff and diving operators) about the increase in shark sightings, suggest a recent positive effect of the no-take zone for these predators and a healthier ecosystem. Results also show that long-term monitoring and effective enforcement of the Alcatrazes Wildlife Refuge are crucial to maintain and enhance the positive effects in the area.

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来源期刊
Environmental Biology of Fishes
Environmental Biology of Fishes 环境科学-海洋与淡水生物学
CiteScore
2.60
自引率
14.30%
发文量
169
审稿时长
3 months
期刊介绍: Environmental Biology of Fishes is an international journal that publishes original studies on the ecology, life history, epigenetics, behavior, physiology, morphology, systematics and evolution of marine and freshwater fishes. Empirical and theoretical papers are published that deal with the relationship between fishes and their external and internal environment, whether natural or unnatural. The journal concentrates on papers that advance the scholarly understanding of life and draw on a variety of disciplines in reaching this understanding. Environmental Biology of Fishes publishes original papers, review papers, brief communications, editorials, book reviews and special issues. Descriptions and submission requirements of these article types can be found in the Instructions for Authors.
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