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Coupled beta diversity patterns among coral reef benthic taxa

  • Community ecology – original research
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A Correction to this article was published on 15 March 2021

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Abstract

Unraveling the processes that drive diversity patterns remains a central challenge for ecology, and an increased understanding is especially urgent to address and mitigate escalating diversity loss. Studies have primarily focused on singular taxonomic groups, but recent research has begun evaluating spatial diversity patterns across multiple taxonomic groups and suggests taxa may have congruence in their diversity patterns. Here, we use surveys of the coral reef benthic groups: scleractinian corals, macroalgae, sponges and gorgonians conducted in the Bahamian Archipelago across 27 sites to determine if there is congruence between taxonomic groups in their site-level diversity patterns (i.e. alpha diversity: number of species, and beta diversity: differences in species composition) while accounting for environmental predictors (i.e. depth, wave exposure, market gravity (i.e. human population size and distance to market), primary productivity, and grazing). Overall, we found that the beta diversities of these benthic groups were significant predictors of each other. The most consistent relationships existed with algae and coral, as their beta diversity was a significant predictor of every other taxa’s beta diversity, potentially due to their strong biotic interactions and dominance on the reef. Conversely, we found no congruence patterns in the alpha diversity of the taxa. Market gravity and exposure showed the most prevalent correlation with both alpha and beta diversity for the taxa. Overall, our results suggest that coral reef benthic taxa can have spatial congruence in species composition, but not number of species, and that future research on biodiversity trends should consider that taxa may have non-independent patterns.

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Code availability

Code is available at https://github.com/JamieMcDevittIrwin/McDevittIrwinetal_Oecologia_BBP_BetaDiversity.

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Acknowledgements

This work was supported by the Natural Sciences and Engineering Research Council (NSERC) through a Postgraduate Scholarship for JMI and the National Science Foundation’s Biocomplexity in the Environment Program (OCE-0119976). We thank J. Knowles for GIS help and I. Chollett for wave exposure data. This is contribution #226 from the Coastlines and Oceans Division in the Institute of Environment at Florida International University.

Funding

This work was supported by the Natural Sciences and Engineering Research Council (NSERC) through a Postgraduate Scholarship for JMI and the National Science Foundation’s Biocomplexity in the Environment Program (OCE-0119976).

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Authors

Contributions

JMI wrote the initial draft and performed the analyses while FM, PM, AH, CK, DB collected the data and contributed to the writing

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Correspondence to Jamie M. McDevitt-Irwin.

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The authors have no conflicts of interest to declare.

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Data is available as ESM2.

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Not applicable.

Additional information

Communicated by Stuart Sandin.

The original online version of this article was revised: Missing Electronic Supplementary Material in springer link updated.

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Supplementary file 1 (XLSX 35 kb)

Supplementary file 2 (PDF 789 kb)

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McDevitt-Irwin, J.M., Kappel, C., Harborne, A.R. et al. Coupled beta diversity patterns among coral reef benthic taxa. Oecologia 195, 225–234 (2021). https://doi.org/10.1007/s00442-020-04826-2

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  • DOI: https://doi.org/10.1007/s00442-020-04826-2

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