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Individual species provide multifaceted contributions to the stability of ecosystems
White, L.; O'Connor, N.E.; Yang, Q.; Emmerson, M.C.; Donohue, I. (2020). Individual species provide multifaceted contributions to the stability of ecosystems. Nature Ecology & Evolution 4(12): 1594-1601. https://dx.doi.org/10.1038/s41559-020-01315-w
In: Nature Ecology & Evolution. Springer Nature. ISSN 2397-334X
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| Auteurs | | Top |
- White, L.
- O'Connor, N.E.
- Yang, Q.
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- Emmerson, M.C.
- Donohue, I.
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| Abstract |
Exploration of the relationship between species diversity and ecological stability has occupied a prominent place in ecological research for decades. Yet, a key component of this puzzle—the contributions of individual species to the overall stability of ecosystems—remains largely unknown. Here, we show that individual species simultaneously stabilize and destabilize ecosystems along different dimensions of stability, and also that their contributions to functional (biomass) and compositional stability are largely independent. By simulating experimentally the extinction of three consumer species (the limpet Patella, the periwinkle Littorina and the topshell Gibbula) from a coastal rocky shore, we found that the capacity to predict the combined contribution of species to stability from the sum of their individual contributions varied among stability dimensions. This implies that the nature of the diversity–stability relationship depends upon the dimension of stability under consideration, and may be additive, synergistic or antagonistic. We conclude that, although the profoundly multifaceted and context-dependent consequences of species loss pose a significant challenge, the predictability of cumulative species contributions to some dimensions of stability provide a way forward for ecologists trying to conserve ecosystems and manage their stability under global change. |
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