Identifying multiple coral reef regimes and their drivers across the Hawaiian archipelago

Jouffray, J. and Nystrom, M. and Norstrom, A.V. and Williams, I.D. and Wedding, L.M. and Kittinger, J.N. and Williams, G.J. (2014) Identifying multiple coral reef regimes and their drivers across the Hawaiian archipelago. Philosophical Transactions of the Royal Society B, 370 (1659). DOI: 10.1098/rstb.2013.0268

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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

Item Type: Article
Subjects: Research Publications
Departments: College of Natural Sciences > School of Ocean Sciences
Date Deposited: 19 Apr 2016 02:41
Last Modified: 19 Apr 2016 02:41
ISSN: 0962–8436
URI: http://e.bangor.ac.uk/id/eprint/6512
Identification Number: DOI: 10.1098/rstb.2013.0268
Publisher: The Royal Society
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