Coping with collapse: Functional robustness of coral‐reef fish network to simulated cascade extinction DOI
André Luís Luza, Mariana G. Bender, Carlos E. L. Ferreira

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(9)

Published: Sept. 1, 2024

Human activities and climate change have accelerated species losses degradation of ecosystems to unprecedented levels. Both theoretical empirical evidence suggest that extinction cascades contribute substantially global loss. The effects can ripple across levels ecological organization, causing not only the secondary loss taxonomic diversity but also functional erosion. Here, we take a step forward in coextinction analysis by estimating robustness reef fish communities We built tripartite network with nodes links based on model output predicting occupancy (113 species) as function coral turf algae cover Southwestern Atlantic reefs. This comprised species, coral-associated (site directly related cover), co-occurring (occupancy indirectly cover). used attack-tolerance curves estimated (R) quantify cascading along three scenarios loss: degree centrality (removing first corals more fish), bleaching vulnerability post-bleaching mortality (most vulnerable removed first), random removal. Degree produced greatest (lowest R) comparison other scenarios. In this scenario, while was robust direct (R = 0.85), 0.54). showed low indirect extinctions 0.31 R 0.57, respectively). Projections 100% caused reduction 69% regional trait space area. reefs went beyond coral-fish relationships. Ever-growing human impacts cause detrimental consequences for assemblages benefit from corals.

Language: Английский

Coping with collapse: Functional robustness of coral‐reef fish network to simulated cascade extinction DOI
André Luís Luza, Mariana G. Bender, Carlos E. L. Ferreira

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(9)

Published: Sept. 1, 2024

Human activities and climate change have accelerated species losses degradation of ecosystems to unprecedented levels. Both theoretical empirical evidence suggest that extinction cascades contribute substantially global loss. The effects can ripple across levels ecological organization, causing not only the secondary loss taxonomic diversity but also functional erosion. Here, we take a step forward in coextinction analysis by estimating robustness reef fish communities We built tripartite network with nodes links based on model output predicting occupancy (113 species) as function coral turf algae cover Southwestern Atlantic reefs. This comprised species, coral-associated (site directly related cover), co-occurring (occupancy indirectly cover). used attack-tolerance curves estimated (R) quantify cascading along three scenarios loss: degree centrality (removing first corals more fish), bleaching vulnerability post-bleaching mortality (most vulnerable removed first), random removal. Degree produced greatest (lowest R) comparison other scenarios. In this scenario, while was robust direct (R = 0.85), 0.54). showed low indirect extinctions 0.31 R 0.57, respectively). Projections 100% caused reduction 69% regional trait space area. reefs went beyond coral-fish relationships. Ever-growing human impacts cause detrimental consequences for assemblages benefit from corals.

Language: Английский

Citations

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