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The context dependence of beneficiary feedback effects on benefactors in plant facilitation
- Source :
- New Phytologist, New Phytologist, Wiley, 2014, 204 (2), pp.386-396. ⟨10.1111/nph.12908⟩, NEW PHYTOLOGIST, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
- Publication Year :
- 2014
-
Abstract
- International audience; Facilitative effects of some species on others are a major driver of biodiversity. These positive effects of a benefactor on its beneficiary can result in negative feedback effects of the beneficiary on the benefactor and reduced fitness of the benefactor. However, in contrast to the wealth of studies on facilitative effects in different environments, we know little about whether the feedback effects show predictable patterns of context dependence. We reanalyzed a global data set on alpine cushion plants, previously used to assess their positive effects on biodiversity and the nature of the beneficiary feedback effects, to specifically assess the context dependence of how small- and large-scale drivers alter the feedback effects of cushion-associated (beneficiary) species on their cushion benefactors using structural equation modelling. The effect of beneficiaries on cushions became negative when beneficiary diversity increased and facilitation was more intense. Local-scale biotic and climatic conditions mediated these community-scale processes, having indirect effects on the feedback effect. High-productivity sites demonstrated weaker negative feedback effects of beneficiaries on the benefactor. Our results indicate a limited impact of the beneficiary feedback effects on benefactor cushions, but strong context dependence. This context dependence may help to explain the ecological and evolutionary persistence of this widespread facilitative system.
- Subjects :
- 0106 biological sciences
Physiology
Biodiversity
Beneficiary
Context (language use)
Plant Science
Environment
Biology
[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy
010603 evolutionary biology
01 natural sciences
Structural equation modeling
10127 Institute of Evolutionary Biology and Environmental Studies
Antagonistic plant–plant interactions
[SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems
Negative feedback
Ecosystem
Feedback, Physiological
Public economics
Competition
Ecology
Context dependence
1314 Physiology
Models, Theoretical
Plants
15. Life on land
[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
Beneficiary feedback effect
Parasitism
Structural equation modelling
Feedback effect
Facilitation
570 Life sciences
biology
590 Animals (Zoology)
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Nurse plant
010606 plant biology & botany
Diversity (business)
Subjects
Details
- Language :
- English
- ISSN :
- 0028646X and 14698137
- Database :
- OpenAIRE
- Journal :
- New Phytologist, New Phytologist, Wiley, 2014, 204 (2), pp.386-396. ⟨10.1111/nph.12908⟩, NEW PHYTOLOGIST, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
- Accession number :
- edsair.doi.dedup.....20b7c40ad375beba86ad19ee8ad52af8