Detailed Record



A Continuum From Positive to Negative Interactions Drives Plant Species' Performance in a Diverse Community


Abstract With many species interacting in nature, determining which interactions describe community dynamics is nontrivial. By applying a computational modeling approach to an extensive field survey, we assessed the importance of interactions from plants (both inter‐ and intra‐specific), pollinators and insect herbivores on plant performance (i.e., viable seed production). We compared the inclusion of interaction effects as aggregate guild‐level terms versus terms specific to taxonomic groups. We found that a continuum from positive to negative interactions, containing mostly guild‐level effects and a few strong taxonomic‐specific effects, was sufficient to describe plant performance. While interactions with herbivores and intraspecific plants varied from weakly negative to weakly positive, heterospecific plants mainly promoted competition and pollinators facilitated plants. The consistency of these empirical findings over 3 years suggests that including the guild‐level effects and a few taxonomic‐specific groups rather than all pairwise and high‐order interactions, can be sufficient for accurately describing species variation in plant performance across natural communities.
Authors Lisa Buche ORCID , Lauren G. Shoemaker University of WyomingORCID , Lauren M. Hallett ORCID , Ígnasi Bartomeus ORCID , Peter A. Vesk ORCID , Christopher Weiss‐Lehman University of WyomingORCID , Margaret M. Mayfield ORCID , Óscar Godoy ORCID
Journal Info Wiley | Ecology Letters , vol: 28 , iss: 1
Publication Date 1/21/2025
ISSN 1461-023X
TypeKeyword Image letter
Open Access hybrid Hybrid Access
DOI https://doi.org/10.1111/ele.70059
KeywordsKeyword Image Guild (Score: 0.9414767) , Community (Score: 0.4554252)