Data from: Motivations, success and cost of coral reef restoration
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Coral reef restoration is an increasingly important part of tropical marine conservation. Information about what motivates coral reef restoration as well as its success and cost is not well understood but needed to inform restoration decisions. We systematically review and synthesise data from mostly scientific studies published in peer‐reviewed and grey literature on the motivations for coral reef restoration, the variables measured, outcomes reported, the cost per hectare of the restoration project, the survival of restored corals, the duration of the project and its overall spatial extent depending on the restoration technique employed. The main motivation to restore coral reefs for the projects assessed was to further our ecological knowledge and improve restoration techniques, with coral growth, productivity and survival being the main variables measured. The median project cost was 400,000 US$ ha‐1 (2010 US$), ranging from 6,000 US$ ha‐1 for the nursery phase of coral gardening to 4,000,000 US$ ha‐1 for substrate addition to build an artificial reef. Restoration projects were mostly of short duration (1‐2 years) and over small spatial extents (0.01 ha or 108 m2). Median reported survival of restored corals was 60.9%. Future research to survey practitioners who do not publish their discoveries would complement this work. Our findings and database provide critical data to inform future research in coral reef restoration.
珊瑚礁修复（Coral reef restoration）已成为热带海洋保护中日益重要的组成部分。目前学界对驱动珊瑚礁修复的因素、修复成效与修复成本的认知仍较为匮乏，但此类信息可为修复决策提供关键参考。本研究系统梳理并整合了主要来自同行评议（peer-reviewed）期刊及灰色文献（grey literature）的科研数据，涵盖珊瑚礁修复的驱动因素、实测变量、报告成果、修复项目的公顷成本、修复珊瑚的存活率、项目周期，以及不同修复技术对应的项目整体空间规模。在所评估的修复项目中，开展珊瑚礁修复的核心动机为深化生态学认知与优化修复技术，实测的主要变量包括珊瑚生长、生产力与存活率。项目成本中位数为400000美元/公顷（以2010年美元计价），区间跨度从珊瑚园艺（coral gardening）育苗阶段的6000美元/公顷，到人工鱼礁基质添加方案的4000000美元/公顷。修复项目大多周期较短（1~2年），且空间规模较小（0.01公顷，即108平方米）。报告的修复珊瑚存活率中位数为60.9%。未来可针对未发表研究成果的从业者开展调研，以完善本研究的覆盖范围。本研究的研究结果与配套数据库可为珊瑚礁修复领域的后续研究提供关键数据支撑。
