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Trophic compensation reinforces resistance: herbivory absorbs the increasing effects of multiple disturbances

AbstractDisturbance often results in small changes in community structure, but the probability of transitioning to contrasting states increases when multiple disturbances combine. Nevertheless, we have limited insights into the mechanisms that stabilise communities, particularly how perturbations can be absorbed without restructuring (i.e. resistance). Here, we expand the concept of compensatory dynamics to include countervailing mechanisms that absorb disturbances through trophic interactions. By definition, ‘compensation’ occurs if a specific disturbance stimulates a proportional countervailing response that eliminates its otherwise unchecked effect. We show that the compounding effects of disturbances from local to global scales (i.e. local canopy‐loss, eutrophication, ocean acidification) increasingly promote the expansion of weedy species, but that this response is countered by a proportional increase in grazing. Finally, we explore the relatively unrecognised role of compensatory effects, which are likely to maintain the resistance of communities to disturbance more deeply than current thinking allows.
- University of Adelaide Australia
- University of Hong Kong China (People's Republic of)
- University of Hong Kong (香港大學) China (People's Republic of)
- University of Hong Kong (香港大學) China (People's Republic of)
- University of Adelaide Australia
Food Chain, Inertia, Climate Change, Gastropoda, Population Dynamics, Compensatory, Climate change, Animals, Herbivory, Ecosystem, compensatory, Stressors, Biodiversity, inertia, Eutrophication, Top-down, climate change, Kelp, top-down, stressors
Food Chain, Inertia, Climate Change, Gastropoda, Population Dynamics, Compensatory, Climate change, Animals, Herbivory, Ecosystem, compensatory, Stressors, Biodiversity, inertia, Eutrophication, Top-down, climate change, Kelp, top-down, stressors
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).118 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 1% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Top 10% impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 1%
