Artigo
Geographical variation in mutualistic networks: similarity, turnover and partner fidelity
Registro en:
Proceedings Of The Royal Society B-biological Sciences. London: Royal Soc, v. 282, n. 1802, p. 9, 2015.
0962-8452
10.1098/rspb.2014.2925
WOS:000350344900028
Autor
Trojelsgaard, Kristian
Jordano, Pedro
Carstensen, Daniel W. [UNESP]
Olesen, Jens M.
Resumen
Although species and their interactions in unison represent biodiversity and all the ecological and evolutionary processes associated with life, biotic interactions have, contrary to species, rarely been integrated into the concepts of spatial beta-diversity. Here, we examine beta-diversity of ecological networks by using pollination networks sampled across the Canary Islands. We show that adjacent and distant communities are more and less similar, respectively, in their composition of plants, pollinators and interactions than expected from random distributions. We further show that replacement of species is the major driver of interaction turnover and that this contribution increases with distance. Finally, we quantify that species-specific partner compositions (here called partner fidelity) deviate from random partner use, but vary as a result of ecological and geographical variables. In particular, breakdown of partner fidelity was facilitated by increasing geographical distance, changing abundances and changing linkage levels, but was not related to the geographical distribution of the species. This highlights the importance of space when comparing communities of interacting species and may stimulate a rethinking of the spatial interpretation of interaction networks. Moreover, geographical interaction dynamics and its causes are important in our efforts to anticipate effects of large-scale changes, such as anthropogenic disturbances. Aarhus University Research Foundation Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Danish Research Council FNU Aarhus Univ, Dept Biosci, Aarhus, Denmark Aalborg Univ, Dept Chem &Biosci, Aalborg, Denmark CSIC, Integrat Ecol Grp, Estn Biol Donana, E-41080 Seville, Spain Univ Estadual Paulista UNESP, Lab Fenol, Dept Bot, Sao Paulo, Brazil Departamento de Botânica, Laboratório de Fenologia, Universidade Estadual Paulista (UNESP), Rio Claro, São Paulo, Brazil FAPESP: 2011/22635-2 FAPESP: 2014/01594-4