INIBIOMA   20415
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y MEDIOAMBIENTE
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
The disruption of a keystone interaction erodes pollination and seed dispersal networks
Autor/es:
VITALI, A.; VÁZQUEZ, D. P.; SASAL, Y.; RODRIGUEZ-CABAL, M. A.; MIGUEL, M. F.
Lugar:
Edimburgo
Reunión:
Congreso; Annual meeting of the British Ecological Society; 2020
Institución organizadora:
British Ecological Society
Resumen:
The gain or loss of particularspecies and the disruption of key interactions can lead to the disassembly of entireinteraction networks. Yet, field-based studies that demonstrate the disassemblyof interaction networks are rare. Here, we evaluate whether a hummingbird-mistletoe-marsupial mutualism promotesthe complexity of pollination and seed-dispersal networks and produces cascadeeffects when its disrupted by non-native ungulates in the temperate forest ofPatagonia, Argentina. We analyzed network motifs, sub-networks composed of asmall number of species, and found that the hummingbird-mistletoe-marsupialmutualism increases complexity of pollination and seed-dispersal networks bysupporting a high diversity of interactions. Moreover, we found that thedisruption of this tripartite interaction by non-native ungulates resulted indiverse indirect effects that led to less complex pollination and seed-dispersalnetworks. Our results demonstrate how the disruption of a key interaction can havecascading effects through the community, by eroding pollination andseed-dispersal networks.