Utilize este identificador para referenciar este registo: https://hdl.handle.net/10316/92060
Título: Native and alien flower visitors differ in partner fidelity and network integration
Autor: Trøjelsgaard, Kristian 
Heleno, Ruben 
Traveset, Anna 
Palavras-chave: biotic homogenisation; ecological network; exotic; interaction partner; mutualism; oceanic island; plant; pollinator; species roles
Data: Ago-2019
Volume: 22
Número: 8
Resumo: Globalisation persistently fuels the establishment of non-native species outside their natural ranges. While alien plants have been intensively studied, little is known about alien flower visitors, and especially, how they integrate into natural communities. Here, we focus on mutualistic networks from five Galápagos islands to quantify whether alien and native flower visitors differ consistently in their pairwise interactions. We find that (1) alien flower visitors have more interaction partners and larger species strengths (i.e. plants are more connected to alien insects), (2) native insects tend to have higher partner fidelity as they deviate more from random partner utilisation, and iii) the difference between native and alien flower visitors in network integration intensifies with island degradation. Thus, native and alien flower visitors are not interchangeable, and alien establishment might have yet unforeseen consequences for the pairwise dynamics between plants and flower visitors on the Galápagos - especially on the heavily disturbed islands.
URI: https://hdl.handle.net/10316/92060
ISSN: 1461-023X
1461-0248
DOI: 10.1111/ele.13287
Direitos: openAccess
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