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首页> 外文期刊>Marine biology >The ecology of Indo-Pacific grouper (Serranidae) species and the effects of a small scale no take area on grouper assemblage, abundance and size frequency distribution
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The ecology of Indo-Pacific grouper (Serranidae) species and the effects of a small scale no take area on grouper assemblage, abundance and size frequency distribution

机译：印度太平洋石斑鱼（Serranidae）物种的生态学和小面积禁区对石斑鱼组合，丰度和大小频率分布的影响

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This paper used the case study of the Wakatobi Marine National Park, Indonesia to examine changes in the diversity, density and maturity of grouper species over a 5-year period following the establishment of a small-scale no-take area (NTA). This work was carried out to investigate whether "small" NTAs could be effective management strategies over a time scale that is relevant to local fishery communities and their perception of management success. Our research also documents the ecology of these species, information essential if we are to understand how management practises are to affect coral reef fish species. Designation of this "small NTA" increased the density of groupers by 30% over a 5-year period of protected status. After 5 years of protection, grouper populations within this NTA were more mature and double the density of those within the adjacent lightly fished sites and nearly five times those of a heavily fished site. During this time all other nearby fished sites underwent large declines in grouper density. The nearby lightly fished Kaledupa site decreased by up to 50% year~(-1). Such drastic declines are considered the impact of the exponential development of ever efficient and unsustainable methods of fishing within the study region. This NTA was not of benefit to all grouper species; thernreasons for which are not clear. Such questions require further detailed research about the life history, population and behavioural ecology of Indo-Pacific grouper species. Such information is critical for urgently needed fisheries management. The present study found that a small scale NTA of 500 m length was large enough to increase the population of top predatory fish. In conjunction with other socially acceptable small scale NTAs it could help maintain and increase important fish stocks over a larger area. The use of "small" NTAs within networks of reserves should become a useful tool in the management of the locally exploited coral reefs.
机译：本文以印度尼西亚瓦卡托比海洋国家公园为例，研究了建立小规模禁渔区（NTA）后五年内石斑鱼物种的多样性，密度和成熟度的变化。开展这项工作是为了调查“小型” NTA是否可以在与当地渔业社区及其对管理成功的看法有关的时间范围内成为有效的管理策略。我们的研究还记录了这些物种的生态学，这对于我们要了解管理实践如何影响珊瑚礁鱼类物种至关重要。在受到保护的5年内，指定这个“小NTA”使石斑鱼的密度增加了30％。经过5年的保护，该NTA内的石斑鱼种群更加成熟，其密度是相邻轻度捕鱼区的两倍，是重度捕鱼区的五倍。在此期间，附近所有其他渔场的石斑鱼密度都大大下降。附近的轻度捕捞的Kaledupa遗址年减少高达50％〜（-1）。这种急剧下降被认为是研究区域内高效且不可持续的捕鱼方法呈指数增长的影响。该NTA并非对所有石斑鱼都有好处。原因尚不清楚。这些问题需要对印度太平洋石斑鱼物种的生活史，种群和行为生态学进行进一步的详细研究。此类信息对于急需的渔业管理至关重要。本研究发现长度为500 m的小规模NTA足以增加顶级掠食性鱼类的种群。结合其他社会上可接受的小规模NTA，它可以帮助在更大范围内维持和增加重要鱼类种群。在保护区网络内使用“小型”国家海洋和大气管理局应成为管理当地开发的珊瑚礁的有用工具。

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