INVESTIGADORES
SASAL Yamila
congresos y reuniones científicas
Título:
Variability in plant-herbivore interactions across the globe and the plant kingdom: Data from the HerbVar network
Autor/es:
WHITEHEAD, S.R.; QUINTERO, C.; SASAL, Y.; THE HERBIVORY VARIABILITY NETWORK
Lugar:
CABA
Reunión:
Congreso; VII ALAEQ; 2023
Institución organizadora:
Latin American Association of Chemical Ecology
Resumen:
Theory predicts that variation in the intensity of plant-herbivore interactions plays a fundamental role in shaping the ecology and evolution of biodiversity and ecosystem processes. However, we have only a limited understanding of what determines the magnitude of this variation at macroecological and macroevolutionary scales. The HerbVar network is a global team of more than 200 biologists working to describe and understand how and why patterns in plant-herbivore interactions vary across the tree of life and around the world. We have conducted standardized surveys of 790 populations of 503 plant species (135 families) across 116° of latitude. We found that variation in herbivory among plants within populations increased by 40% as one moved from the equator to 70° N/S. It also varied nearly two-fold among biomes and decreased by 33% with a 2 m increase in plant size. Variation exhibited a strong phylogenetic signal a signal that was stronger than the one for mean herbivory. Our findings demonstrate that contrary to conventional wisdom differences in the magnitude of interaction variability are not random. Rather, they are a key ecological, evolutionary, and biogeographic feature predictably linked to broad macroscale factors.