The context dependence of beneficiary feedback effects on benefactors in plant facilitation

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 204(2014), 2 vom: 28. Okt., Seite 386-96
1. Verfasser:	Schöb, Christian (VerfasserIn)
Weitere Verfasser:	Callaway, Ragan M, Anthelme, Fabien, Brooker, Rob W, Cavieres, Lohengrin A, Kikvidze, Zaal, Lortie, Christopher J, Michalet, Richard, Pugnaire, Francisco I, Xiao, Sa, Cranston, Brittany H, García, Mary-Carolina, Hupp, Nicole R, Llambí, Luis D, Lingua, Emanuele, Reid, Anya M, Zhao, Liang, Butterfield, Bradley J
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2014
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't antagonistic plant-plant interactions beneficiary feedback effect competition context dependence facilitation nurse plant parasitism structural equation modelling

Beschreibung
Zusammenfassung:	© 2014 The Authors. New Phytologist © 2014 New Phytologist Trust. 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
Beschreibung:	Date Completed 05.06.2015 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.12908