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Spatial Synchrony of Diving Waterbirds Populations in Continental Wetlands of the Iberian Region

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Abstract

Spatial population synchrony is a key aspect in ecology. Normally, three mechanisms have been identified to explain similar temporal variations in abundance between spatially separated populations: Moran effect, trophic interactions and dispersal. We analysed the spatial synchrony of the abundance of five diving waterfowl species (White-Headed Duck, Black-Necked Grebe, Red-Crested Pochard, Common Pochard and Common Coot) by conducting a monthly census from October 2013 to September 2019 in 34 lakes located in Central Spain. Twenty-eight independent variables related to the hydroperiod, anthropogenic impacts, landscape and structural variables were tested in relation to temporal patterns. Synchronised lakes groups were identified for all species, with differential associations with variables. The variables associated with spatial synchrony were: Distance between lakes (White-Headed Duck and Common Pochard); Natural vegetation area in lakes (Red-Crested Pochard) and Accumulated precipitation until the breeding season (Common Pochard and Common Coot). For Black-Necked Grebe, no variable was associated with the observed temporal patterns. These results provide the first evidence for the mechanisms behind the spatio-temporal synchronisation of diving waterbirds populations in the central Iberian region.

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Data Availability

The datasets generated and analysed are available from the corresponding author on reasonable request.

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Funding

This research was founded by the MINECO and the Agencia Estatal de Investigación of the Spanish Government through projects CLIMAWET (ref. number CGL2015-69557-R) and CLIMAWET-CONS (ref. number PID2019-104742RB-I00) respectively, both cofounded by European FEDER Funds, one way to make Europe. Maycon Gonçalves received a postdoc contract while writing this paper, funded by European Social Funds through the University of Castilla-La Mancha (ref. number “2021-UNIVERS-10414 UCLM”).

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Contributions

José Antonio Gil-Delgado, Germán Manuel López-Iborra, Maycon S.S. Gonçalves and Olga Vallés-Medialdea contributed to the study conception and design. Data collections were carried out by José Antonio Gil-Delgado, Rafael Ubaldo Gosálvez, Ángel Velasco, Maycon S. S. Gonçalves and Olga Vallés-Medialdea. Analyses were performed by Maycon S.S. Gonçalves and Olga Vallés-Medialdea. The first draft of manuscript was written by Olga Vallés-Medialdea. Revisions were performed by all authors. All authors read and approved the final manuscript.

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Correspondence to Olga Vallés-Medialdea.

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Vallés-Medialdea, O., Gil-Delgado, J.A., López-Iborra, G.M. et al. Spatial Synchrony of Diving Waterbirds Populations in Continental Wetlands of the Iberian Region. Wetlands 42, 92 (2022). https://doi.org/10.1007/s13157-022-01604-z

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  • DOI: https://doi.org/10.1007/s13157-022-01604-z

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