Protection efforts have resulted in ∼ 10% of existing fish biomass on coral reefs

• 成果类型: Article
• 署名作者: Caldwell, Iain R.; McClanahan, Tim R.; Oddenyo, Remy M.; Graham, Nicholas A. J.; Beger, Maria; Vigliola, Laurent; Sandin, Stuart A.; Friedlander, Alan M.; Randriamanantsoa, Bemahafaly; Wantiez, Laurent; Green, Alison L.; Humphries, Austin T.; Hardt, Marah J.; Caselle, Jennifer E.; Feary, David A.; Karkarey, Rucha; Jadot, Catherine; Hoey, Andrew S.; Eurich, Jacob G.; Wilson, Shaun K.; Crane, Nicole; Tupper, Mark; Ferse, Sebastian C. A.; Maire, Eva; Mouillot, David; Cinner, Joshua E.
• 署名单位: University of Sydney; James Cook University; Wildlife Conservation Society; Lancaster University; University of Leeds; University of Queensland; Institut de Recherche pour le Developpement (IRD); University of La Reunion; Centre National de la Recherche Scientifique (CNRS); Ifremer; University of California System; University of California San Diego; Scripps Institution of Oceanography; National Geographic Society; University of Hawaii System; University of Rhode Island; University of California System; University of California Santa Barbara; James Cook University; University of Western Australia; University of Cumbria; Leibniz Association; Leibniz Zentrum fur Marine Tropenforschung (ZMT); University of Bremen; Bogor Agricultural University; Centre National de la Recherche Scientifique (CNRS); Universite de Montpellier; Ifremer; Universite Paris Cite
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-11115
• DOI: 10.1073/pnas.2308605121
• 发表日期: 2024-10-15
• 关键词: marine reserves; home-range; areas; fisheries; management; spillover; CONSERVATION

摘要

The amount of ocean protected from fishing and other human impacts has often been used as a metric of conservation progress. However, protection efforts have highly variable outcomes that depend on local conditions, which makes it difficult to quantify what coral reef protection efforts to date have actually achieved at a global scale. Here, we develop a predictive model of how local conditions influence conservation outcomes on similar to 2,600 coral reef sites across 44 ecoregions, which we used to quantify how much more fish biomass there is on coral reefs compared to a modeled scenario with no protection. Under the assumptions of our model, our study reveals that without existing protection efforts there would be similar to 10% less fish biomass on coral reefs. Thus, we estimate that coral reef protection efforts have led to approximately 1 in every 10 kg of existing fish biomass.