A global analysis of bidirectional interactions in alpine plant communities shows facilitators experiencing strong reciprocal fitness costs

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 202(2014), 1 vom: 16. Apr., Seite 95-105
1. Verfasser:	Schöb, Christian (VerfasserIn)
Weitere Verfasser:	Michalet, Richard, Cavieres, Lohengrin A, Pugnaire, Francisco I, Brooker, Rob W, Butterfield, Bradley J, Cook, Bradley J, Kikvidze, Zaal, Lortie, Christopher J, Xiao, Sa, Al Hayek, Patrick, Anthelme, Fabien, Cranston, Brittany H, García, Mary-Carolina, Le Bagousse-Pinguet, Yoann, Reid, Anya M, le Roux, Peter C, Lingua, Emanuele, Nyakatya, Mawethu J, Touzard, Blaise, Zhao, Liang, Callaway, Ragan M
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 community feedbacks competition cost and benefit of facilitation nurse plant system parasitism plant-plant interactions reciprocal interactions reproductive success

Beschreibung
Zusammenfassung:	© 2013 The Authors. New Phytologist © 2013 New Phytologist Trust. Facilitative interactions are defined as positive effects of one species on another, but bidirectional feedbacks may be positive, neutral, or negative. Understanding the bidirectional nature of these interactions is a fundamental prerequisite for the assessment of the potential evolutionary consequences of facilitation. In a global study combining observational and experimental approaches, we quantified the impact of the cover and richness of species associated with alpine cushion plants on reproductive traits of the benefactor cushions. We found a decline in cushion seed production with increasing cover of cushion-associated species, indicating that being a benefactor came at an overall cost. The effect of cushion-associated species was negative for flower density and seed set of cushions, but not for fruit set and seed quality. Richness of cushion-associated species had positive effects on seed density and modulated the effects of their abundance on flower density and fruit set, indicating that the costs and benefits of harboring associated species depend on the composition of the plant assemblage. Our study demonstrates 'parasitic' interactions among plants over a wide range of species and environments in alpine systems, and we consider their implications for the possible selective effects of interactions between benefactor and beneficiary species
Beschreibung:	Date Completed 28.10.2014 Date Revised 16.04.2021 published: Print-Electronic CommentIn: New Phytol. 2014 Apr;202(1):4-6. - PMID 24571690 Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.12641