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Higher fish biomass inside than outside marine protected areas despite typhoon impacts in a complex reefscape
Biological Conservation ( IF 5.9 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.biocon.2019.108354 Eva C. McClure , Katherine T. Sievers , Rene A. Abesamis , Andrew S. Hoey , Angel C. Alcala , Garry R. Russ
Biological Conservation ( IF 5.9 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.biocon.2019.108354 Eva C. McClure , Katherine T. Sievers , Rene A. Abesamis , Andrew S. Hoey , Angel C. Alcala , Garry R. Russ
No-take marine protected areas (MPAs) are an important tool for conserving marine biodiversity and managing fisheries. However, with increasing environmental change driven by local and global stressors, it is critical to understand whether MPAs can continue to provide social, economic and conservation benefits in the long-term. Here, we compare coral reef benthic and fish assemblages across 17 paired MPA-fished control sites on three heavily populated, high elevation “mainland” islands, and four lowly populated, low elevation “offshore” islands that differed in their exposure to recent typhoons. Despite lower cover of macroalgae in MPAs compared to fished areas, especially on mainland islands, there were no consistent differences in benthic assemblages or total hard coral cover between paired MPA and fished reefs. Typhoons had severe negative effects on live hard coral cover, regardless of island type or MPA protection, and typhoon impacted reefs supported different fish assemblages and lower total biomass of fish, compared to non-impacted reefs. Although fish assemblage structure and total biomass differed between mainland and offshore islands, MPAs consistently supported a higher total biomass of fish than fished areas, with the magnitude of the MPA effect lower on typhoon impacted reefs. Our findings suggest that despite inherent differences in environmental conditions between mainland and offshore island coral reefs, MPAs can provide benefits to fish biomass, even when reefs are affected by typhoons. The development of management strategies that incorporate sound coastal land-use practices, while positioning MPAs in areas less prone to typhoon impact, will provide MPAs the best chance of success if climatic extremes increase.
中文翻译:
尽管在复杂的珊瑚礁景观中受到台风影响,但海洋保护区内的鱼类生物量高于外部海洋保护区
禁捕海洋保护区 (MPA) 是保护海洋生物多样性和管理渔业的重要工具。然而,随着当地和全球压力因素驱动的环境变化日益加剧,了解海洋保护区能否长期继续提供社会、经济和保护效益至关重要。在这里,我们比较了三个人口稠密、海拔高的“大陆”岛屿和四个人口稀少、海拔低的“近海”岛屿上 17 个成对的 MPA 捕鱼控制点的珊瑚礁底栖和鱼类组合,这些岛屿在最近的台风中暴露程度不同。尽管与捕鱼区相比,海洋保护区的大型藻类覆盖率较低,尤其是在大陆岛屿上,但成对的海洋保护区和捕鱼珊瑚礁之间的底栖组合或总硬珊瑚覆盖率没有一致的差异。无论岛屿类型或 MPA 保护如何,台风对活硬珊瑚覆盖都有严重的负面影响,与未受影响的珊瑚礁相比,台风影响的珊瑚礁支持不同的鱼类组合和较低的鱼类总生物量。尽管大陆和近海岛屿之间的鱼类组合结构和总生物量不同,但海洋保护区始终支持比捕鱼区更高的鱼类总生物量,MPA 对台风影响珊瑚礁的影响程度较低。我们的研究结果表明,尽管大陆和近海岛屿珊瑚礁之间的环境条件存在固有差异,但海洋保护区可以为鱼类生物量提供好处,即使珊瑚礁受到台风的影响。制定包含良好沿海土地利用做法的管理战略,同时将海洋保护区定位在不易受台风影响的地区,
更新日期:2020-01-01
中文翻译:
尽管在复杂的珊瑚礁景观中受到台风影响,但海洋保护区内的鱼类生物量高于外部海洋保护区
禁捕海洋保护区 (MPA) 是保护海洋生物多样性和管理渔业的重要工具。然而,随着当地和全球压力因素驱动的环境变化日益加剧,了解海洋保护区能否长期继续提供社会、经济和保护效益至关重要。在这里,我们比较了三个人口稠密、海拔高的“大陆”岛屿和四个人口稀少、海拔低的“近海”岛屿上 17 个成对的 MPA 捕鱼控制点的珊瑚礁底栖和鱼类组合,这些岛屿在最近的台风中暴露程度不同。尽管与捕鱼区相比,海洋保护区的大型藻类覆盖率较低,尤其是在大陆岛屿上,但成对的海洋保护区和捕鱼珊瑚礁之间的底栖组合或总硬珊瑚覆盖率没有一致的差异。无论岛屿类型或 MPA 保护如何,台风对活硬珊瑚覆盖都有严重的负面影响,与未受影响的珊瑚礁相比,台风影响的珊瑚礁支持不同的鱼类组合和较低的鱼类总生物量。尽管大陆和近海岛屿之间的鱼类组合结构和总生物量不同,但海洋保护区始终支持比捕鱼区更高的鱼类总生物量,MPA 对台风影响珊瑚礁的影响程度较低。我们的研究结果表明,尽管大陆和近海岛屿珊瑚礁之间的环境条件存在固有差异,但海洋保护区可以为鱼类生物量提供好处,即使珊瑚礁受到台风的影响。制定包含良好沿海土地利用做法的管理战略,同时将海洋保护区定位在不易受台风影响的地区,