Östman, Örjan
- Department of Aquatic Resources (SLU Aqua), Swedish University of Agricultural Sciences
Abstract
Ecological stability is the central framework to understand an ecosystem's ability to absorb or recover from environmental change. Recent modelling and conceptual work suggests that stability is a multidimensional construct comprising different response aspects. Using two freshwater mesocosm experiments as case studies, we show how the response to single perturbations can be decomposed in different stability aspects (resistance, resilience, recovery, temporal stability) for both ecosystem functions and community composition. We find that extended community recovery is tightly connected to a nearly complete recovery of the function (biomass production), whereas systems with incomplete recovery of the species composition ranged widely in their biomass compared to controls. Moreover, recovery was most complete when either resistance or resilience was high, the latter associated with low temporal stability around the recovery trend. In summary, no single aspect of stability was sufficient to reflect the overall stability of the system.
Keywords
Biodiversity; biomass; composition; ecosystem functions; fluctuations; recovery; resilience; resistance
Published in
Ecology Letters
2018, volume: 21, number: 1, pages: 21-30
Publisher: WILEY
SLU Authors
UKÄ Subject classification
Ecology
Publication identifier
- DOI: https://doi.org/10.1111/ele.12867
Permanent link to this page (URI)
https://res.slu.se/id/publ/93535