Scale dependence of coral reef oases and their environmental correlates

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Abstract/Contents

Abstract
Identifying relatively intact areas within ecosystems and determining the conditions favoring their existence is necessary for effective management in the context of widespread environmental degradation. In this study, we used 3766 surveys of randomly selected sites in the United States and U.S. Territories to identify the correlates of sites categorized as “oases” (defined as sites with relatively high total coral cover). We used occupancy models to evaluate the influence of 10 environmental predictors on the probability that an area (21.2-km 2 cell) would harbor coral oases defined at four spatial extents: cross-basin, basin, region, and subregion. Across all four spatial extents, oases were more likely to occur in habitats with high light attenuation. The influence of the other environmental predictors on the probability of oasis occurrence were less consistent and varied with the scale of observation. Oases were most likely in areas of low human population density, but this effect was evident only at the cross-basin and subregional extents. At the regional and subregional extents oases were more likely where sea-surface temperature was more variable, whereas at the larger spatial extents the opposite was true. By identifying the correlates of oasis occurrence, the model can inform the prioritization of reef areas for management. Areas with biophysical conditions that confer corals with physiological resilience, as well as limited human impacts, likely support coral reef oases across spatial extents. Our approach is widely applicable to the development of conservation strategies to protect biodiversity and ecosystems in an era of magnified human disturbance.

Description

Type of resource text
Date created January 10, 2024
Date modified January 10, 2024
Publication date January 10, 2024; 2022

Creators/Contributors

Author Elahi, Robin
Author Edmunds, Peter
Author Gates, Ruth
Author Kuffner, Ilsa
Author Barnes, Brian
Author Chollett, Iliana
Author Courtney, Travis
Author Guest, James
Author Lenz, Elizabeth
Author Toth, Lauren
Author Viehman, T. Shay
Author Williams, Ivor

Subjects

Subject climate change
Subject conservation
Subject ecosystem
Subject management
Subject occupancy models
Subject persistence
Subject resilience
Genre Text
Genre Article

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User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
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This work is licensed under a Creative Commons Zero v1.0 Universal license (CC0).

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Preferred citation
Elahi, R., Edmunds, P., Gates, R., Kuffner, I., Barnes, B., Chollett, I., Courtney, T., Guest, J., Lenz, E., Toth, L., Viehman, T., and Williams, I. (2024). Scale dependence of coral reef oases and their environmental correlates. Stanford Digital Repository. Available at https://purl.stanford.edu/vk755pn0528. https://doi.org/10.25740/vk755pn0528.

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Stanford University Open Access Articles

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