Variability in coral reef fish baseline and benchmark biomass in the central and western Indian Ocean provinces
| Autor: | Pascale Chabanet, J. Henrich Bruggemann, Tim R. McClanahan, Nicholas A. J. Graham, Alan M. Friedlander |
|---|---|
| Přispěvatelé: | Wildlife Conservation Society (WCS), National Geographic Society, University of Hawaii at Manoa, Partenaires INRAE, Lancaster University, Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE [Réunion]), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Institut de Recherche pour le Développement (IRD), Laboratoire d'Excellence CORAIL (LabEX CORAIL), Institut de Recherche pour le Développement (IRD)-Université des Antilles et de la Guyane (UAG)-École des hautes études en sciences sociales (EHESS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de La Réunion (UR)-Université de la Polynésie Française (UPF)-Université de la Nouvelle-Calédonie (UNC)-Institut d'écologie et environnement-Université des Antilles (UA) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Unfished biomass Coral reef fish Biodiversity Aquatic Science 010603 evolutionary biology 01 natural sciences Human gravity human gravity Marine reserves 14. Life underwater Sustainable fishing Reef Nature and Landscape Conservation Seascape Biomass (ecology) geography geography.geographical_feature_category Ecology 010604 marine biology & hydrobiology wilderness Marine reserve unfished biomass marine reserves Coral reef 15. Life on land sustainable fishing Fishery Fishing impacts Habitat Wilderness [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
| Zdroj: | Aquatic Conservation: Marine and Freshwater Ecosystems Aquatic Conservation: Marine and Freshwater Ecosystems, Wiley, 2020, 31, pp.28-42. ⟨10.1002/aqc.3448⟩ Aquatic Conservation-marine And Freshwater Ecosystems (1052-7613) (Wiley), 2021-01, Vol. 31, N. 1, P. 28-42 |
| ISSN: | 1052-7613 1099-0755 |
| DOI: | 10.1002/aqc.3448⟩ |
| Popis: | International audience; Reef fish biomass is increasingly recognized as a key indicator of fishery and biodiversity status linked to ecosystem integrity on coral reefs, and yet the evaluation of appropriate baselines for biomass, and what drives variation in potential baselines, is sparse. Variability in reef fishable biomass was assessed to test for the existence of baselines or benchmarks (B&Bs), based on field studies of 223 reef sites in remote uninhabited reefs, in high‐compliance closures of >5 km2, and among the increasing number of small and recent closures. The purpose of the study was to examine the effects of human habitation, travel time and distance to cities, habitat, depth, benthic cover, and environmental variables on fish B&Bs. There were large differences in the three categories of ‘no fishing’, with human habitation being the single best predictor of biomass. In remote areas without people (>9 hours of travel time), fish biomass had a mean of 2,450 kg ha–1 (95% confidence interval, 95% CI, 2,130–2,770 kg ha–1; median = 1,885 kg ha–1). In these remote areas, biomass was weakly associated with human travel time to the site and, to a lesser extent, wave energy. In high‐compliance closures, fish biomass peaked at 20 years and 5–10 km2, and levelled at 910 kg ha–1 (95% CI 823–989 kg ha–1) for both closure age and size. There was little evidence that human travel time and environmental factors influenced biomass greatly in these established closures. In small and recent closures ( |
| Databáze: | OpenAIRE |
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