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Identifying multiple coral reef regimes and their drivers across the Hawaiian archipelago
Stockholm University, Faculty of Science, Stockholm Resilience Centre. Royal Swedish Academy of Sciences, Sweden.ORCID iD: 0000-0002-4105-6372
Stockholm University, Faculty of Science, Stockholm Resilience Centre.ORCID iD: 0000-0003-3608-2426
Stockholm University, Faculty of Science, Stockholm Resilience Centre.ORCID iD: 0000-0002-0706-9233
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Number of Authors: 72015 (English)In: Philosophical Transactions of the Royal Society of London. Biological Sciences, ISSN 0962-8436, E-ISSN 1471-2970, Vol. 370, no 1659, article id 20130268Article in journal (Refereed) Published
Abstract [en]

Loss of coral reef resilience can lead to dramatic changes in benthic structure, often called regime shifts, which significantly alter ecosystem processes and functioning. In the face of global change and increasing direct human impacts, there is an urgent need to anticipate and prevent undesirable regime shifts and, conversely, to reverse shifts in already degraded reef systems. Such challenges require a better understanding of the human and natural drivers that support or undermine different reef regimes. The Hawaiian archipelago extends across a wide gradient of natural and anthropogenic conditions and provides us a unique opportunity to investigate the relationships between multiple reef regimes, their dynamics and potential drivers. We applied a combination of exploratory ordination methods and inferential statistics to one of the most comprehensive coral reef datasets available in order to detect, visualize and define potential multiple ecosystem regimes. This study demonstrates the existence of three distinct reef regimes dominated by hard corals, turf algae or macroalgae. Results from boosted regression trees show nonlinear patterns among predictors that help to explain the occurrence of these regimes, and highlight herbivore biomass as the key driver in addition to effluent, latitude and depth.

Place, publisher, year, edition, pages
2015. Vol. 370, no 1659, article id 20130268
Keywords [en]
boosted regression trees, coral reefs, disturbance, Hawaii, multiple regimes, resilience
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-159607DOI: 10.1098/rstb.2013.0268ISI: 000346147200007OAI: oai:DiVA.org:su-159607DiVA, id: diva2:1244678
Available from: 2018-09-03 Created: 2018-09-03 Last updated: 2022-03-07Bibliographically approved

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Jouffray, Jean-BaptisteNyström, MagnusNorström, Albert V.

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