Relationships between structural complexity, coral traits, and reef fish assemblages

Darling, Emily S. and Graham, Nicholas A. J. and Januchowski-Hartley, Fraser A. and Nash, Kirsty L. and Pratchett, Morgan S. and Wilson, Shaun K. (2017) Relationships between structural complexity, coral traits, and reef fish assemblages. Coral Reefs, 36 (561-57). pp. 561-575. ISSN 0722-4028

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Abstract

With the ongoing loss of coral cover and the associated flattening of reef architecture, understanding the links between coral habitat and reef fishes is of critical importance. Here, we investigate whether considering coral traits and functional diversity provides new insights into the relationship between structural complexity and reef fish communities, and whether coral traits and community composition can predict structural complexity. Across 157 sites in Seychelles, Maldives, the Chagos Archipelago, and Australia's Great Barrier Reef, we find that structural complexity and reef zone are the strongest and most consistent predictors of reef fish abundance, biomass, species richness, and trophic structure. However, coral traits, diversity, and life histories provided additional predictive power for models of reef fish assemblages, and were key drivers of structural complexity. Our findings highlight that reef complexity relies on living corals-with different traits and life histories-continuing to build carbonate skeletons, and that these nuanced relationships between coral assemblages and habitat complexity can affect the structure of reef fish assemblages. Seascape-level estimates of structural complexity are rapid and cost effective with important implications for the structure and function of fish assemblages, and should be incorporated into monitoring programs.

Item Type: Journal Article
Journal or Publication Title: Coral Reefs
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s00338-017-1539-z
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1100/1104
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 88431
Deposited By: ep_importer_pure
Deposited On: 26 Oct 2017 13:30
Refereed?: Yes
Published?: Published
Last Modified: 19 Feb 2020 04:08
URI: https://eprints.lancs.ac.uk/id/eprint/88431

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