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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
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A large invasive consumer reduces coastal ecosystem resilience by disabling positive species interactions
Hensel, M.J.S.; Silliman, B.R.; van de Koppel, J.; Hensel, E.; Sharp, S.J.; Crotty, S.M.; Byrnes, J.E.K. (2021). A large invasive consumer reduces coastal ecosystem resilience by disabling positive species interactions. Nature Comm. 12: 6290. https://dx.doi.org/10.1038/s41467-021-26504-4
Bijhorende data:
In: Nature Communications. Nature Publishing Group: London. ISSN 2041-1723; e-ISSN 2041-1723, meer
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| Auteurs | | Top |
- Hensel, M.J.S.
- Silliman, B.R.
- van de Koppel, J., meer
- Hensel, E.
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- Sharp, S.J.
- Crotty, S.M.
- Byrnes, J.E.K.
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| Abstract |
Invasive consumers can cause extensive ecological damage to native communities but effects on ecosystem resilience are less understood. Here, we use drone surveys, manipulative experiments, and mathematical models to show how feral hogs reduce resilience in southeastern US salt marshes by dismantling an essential marsh cordgrass-ribbed mussel mutualism. Mussels usually double plant growth and enhance marsh resilience to extreme drought but, when hogs invade, switch from being essential for plant survival to a liability; hogs selectively forage in mussel-rich areas leading to a 50% reduction in plant biomass and slower post-drought recovery rate. Hogs increase habitat fragmentation across landscapes by maintaining large, disturbed areas through trampling of cordgrass during targeted mussel consumption. Experiments and climate-disturbance recovery models show trampling alone slows marsh recovery by 3x while focused mussel predation creates marshes that may never recover from large-scale disturbances without hog eradication. Our work highlights that an invasive consumer can reshape ecosystems not just via competition and predation, but by disrupting key, positive species interactions that underlie resilience to climatic disturbances. |
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