RARE, Jl, Gunung Gede 1 No. 6, Taman Kencana, Bogor, 16151, Indonesia.
Institute for Marine and Antarctic Studies, University of Tasmania, Hobart 7001, Tasmania, Australia.
Conserv Biol. 2018 Apr;32(2):401-410. doi: 10.1111/cobi.12996. Epub 2018 Mar 8.
Considerable empirical evidence supports recovery of reef fish populations with fishery closures. In countries where full exclusion of people from fishing may be perceived as inequitable, fishing-gear restrictions on nonselective and destructive gears may offer socially relevant management alternatives to build recovery of fish biomass. Even so, few researchers have statistically compared the responses of tropical reef fisheries to alternative management strategies. We tested for the effects of fishery closures and fishing gear restrictions on tropical reef fish biomass at the community and family level. We conducted 1,396 underwater surveys at 617 unique sites across a spatial hierarchy within 22 global marine ecoregions that represented 5 realms. We compared total biomass across local fish assemblages and among 20 families of reef fishes inside marine protected areas (MPAs) with different fishing restrictions: no-take, hook-and-line fishing only, several fishing gears allowed, and sites open to all fishing gears. We included a further category representing remote sites, where fishing pressure is low. As expected, full fishery closures, (i.e., no-take zones) most benefited community- and family-level fish biomass in comparison with restrictions on fishing gears and openly fished sites. Although biomass responses to fishery closures were highly variable across families, some fishery targets (e.g., Carcharhinidae and Lutjanidae) responded positively to multiple restrictions on fishing gears (i.e., where gears other than hook and line were not permitted). Remoteness also positively affected the response of community-level fish biomass and many fish families. Our findings provide strong support for the role of fishing restrictions in building recovery of fish biomass and indicate important interactions among fishing-gear types that affect biomass of a diverse set of reef fish families.
大量经验证据表明,通过渔业禁捕可以使珊瑚礁鱼类种群得到恢复。在一些国家,完全禁止人们捕鱼可能被认为是不公平的,因此,可以对非选择性和破坏性渔具实施渔具限制,为恢复鱼类生物量提供具有社会相关性的管理替代方案。即便如此,很少有研究人员对热带珊瑚礁渔业对替代管理策略的反应进行过统计比较。我们在社区和家庭层面上测试了渔业禁捕和渔具限制对热带珊瑚礁鱼类生物量的影响。我们在全球 22 个海洋生态区的 5 个领域内,在一个空间层次上,对 617 个独特地点的 1396 次水下调查进行了比较。我们比较了海洋保护区(MPA)内不同捕捞限制下的局部鱼类群落和 20 个珊瑚礁鱼类科的总生物量:无捕捞、仅钩钓、允许使用多种渔具和允许所有渔具捕捞的地点。我们还包括了一个代表低捕捞压力的偏远地点。正如预期的那样,与渔具限制和开放捕捞的地点相比,完全渔业禁捕(即无捕捞区)最有利于社区和家庭层面的鱼类生物量。尽管渔业禁捕对不同鱼类科的生物量响应差异很大,但一些渔业目标(例如,鲨鱼科和笛鲷科)对多种渔具限制(即不允许使用鱼钩和线以外的渔具)做出了积极响应。偏远程度也对社区层面鱼类生物量和许多鱼类科的响应产生了积极影响。我们的研究结果为渔具限制在恢复鱼类生物量方面的作用提供了强有力的支持,并表明渔具类型之间的重要相互作用会影响一系列不同的珊瑚礁鱼类科的生物量。