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首页> 外文期刊>Conservation Biology >Implications of Urbanization for Artisanal Parrotfish Fisheries in the Western Solomon Islands
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Implications of Urbanization for Artisanal Parrotfish Fisheries in the Western Solomon Islands

机译：城市化对西所罗门群岛手工鹦嘴鱼渔业的影响

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Increasing migration into urbanized centers in the Solomon Islands poses a great threat to adjacent coral reef fisheries because of negative effects on the fisheries and because it further erodes customary management systems. Parrotfish fisheries are of particular importance because the feeding habits of parrotfish (scrape and excavate coral) are thought to be critical to the resilience of coral reefs and to maintaining coral reef health within marine protected areas. We investigated the ecological impact of localized subsistence and artisanal fishing pressure on parrotfish fisheries in Gizo Town, Western Solomon Islands, by analyzing the density and size distribution of parrotfish with an underwater visual census (UVC), recall diary (i.e., interviews with fishers), and creel surveys to independently assess changes in abundance and catch-per-unit-effort (CPUE) over 2 years. We then compared parrotfish data from Gizo Town with equivalent data from sites open to and closed to fishing in Kida and Nusa Hope villages, which have different customary management regimes. Results indicated a gradient of customary management effectiveness. Parrotfish abundance was greater in customary management areas closed to fishing, especially with regard to larger fish sizes, than in areas open to fishing. The decline in parrotfish abundance from 2004 to 2005 in Gizo was roughly the same magnitude as the difference in abundance decline between inside and outside customary management marine reserves. Our results highlight how weak forms of customary management can result in the rapid decline of vulnerable fisheries around urbanized regions, and we present examples in which working customary management systems (Kinda and Nusa Hope) can positively affect the conservation of parrotfish-and reef fisheries in general-in the highly biodiverse Coral Triangle region.
机译：所罗门群岛向城市化中心的迁徙不断增加，对邻近的珊瑚礁渔业构成了巨大威胁，因为这对渔业产生了负面影响，并进一步侵蚀了习惯管理系统。鹦鹉鱼渔业尤其重要，因为据认为鹦鹉鱼（刮cra和挖掘出的珊瑚）的摄食习惯对珊瑚礁的复原力和维持海洋保护区内的珊瑚礁健康至关重要。我们通过水下视觉普查（UVC），回顾日记（即，对渔民的访谈）分析了鹦嘴鱼的密度和大小分布，调查了局部生存和手工捕鱼压力对西所罗门群岛吉佐镇鹦嘴鱼渔业的生态影响。以及纱架调查，以独立评估2年内丰度和单位捕获量（CPUE）的变化。然后，我们将吉佐镇的鹦嘴鱼数据与吉达镇和努沙希望村的开放和封闭捕鱼场所的等效数据进行了比较，这些村庄有不同的习惯管理制度。结果表明习惯管理的有效性梯度。在禁止捕鱼的习惯管理地区，特别是在较大鱼类规格方面，比在允许捕鱼的地区，鹦鹉鱼的丰度更高。 2004年至2005年，吉佐的鹦嘴鱼丰度下降幅度与内外习惯管理海洋保护区之间的丰度下降幅度大致相同。我们的结果表明，习惯管理形式薄弱如何导致城市化地区脆弱的渔业迅速衰退，并且我们以工作中的习惯管理系统（Kinda和Nusa Hope）为例，对保护鹦鹉鱼和礁石渔业产生积极影响。一般-在高度生物多样化的珊瑚三角地区。

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