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Rewiring of experimentally disturbed seed dispersal networks might lead to unex...
Costa, José M.; Ramos, Jaime; Silva, Luís P. da; Timóteo, Sérgio; Andrade, Pedro; Araújo, Pedro M.; Carneiro, Camilo; Correia, Edna; Cortez, José PauloThe consequences of species extinctions in ecological communities may be buffered through the rearrangement (rewiring) of the interactions between the remaining species. The structural and functional consequences of such extinctions can be explored by means of computer simulations that try to predict secondary extinctions and the degradation of ecosystem services. However, to improve the accuracy of these simul...
Are blackcaps sylvia atricapilla differential distance migrants by sex?
Catry, Paulo; Lecoq, Miguel; Conway, Greg; Felgueiras, Marcial; King, J. Michael B.; Hamidi, SalimaAims: To investigate if male and female blackcaps show differences in the amplitude of migratory movements. Methods: The extent of movements of male and female British blackcaps were analysed using ringing recovery records. Furthermore, through a literature review and the collection of original field data, the sex-ratios of blackcap samples taken at several latitudes in Europe and Africa were compared. Results:...
Differential migration of chiffchaffs Phylloscopus collybita and P. ibericus in...
Catry, Paulo; Lecoq, Miguel; Araújo, António; Conway, Greg; Felgueiras, Marcial; King, J. Michael B.; Rumsey, Stephen; Salima, Hamidi; Tenreiro, PauloDifferential migration is a widespread, but poorly understood, phenomenon in birds. In this paper, we present the first detailed field study of differential migration in the Old World warbler (Sylviidae) family. We studied two chiffchaff Phylloscopus [collybita ] semispecies: the common chiffchaff P. [c. ] collybita and the Iberian chiffchaff P. [c. ] ibericus. Using data collected at several latitudes in Europ...