Interspecific variation in the relationship between clutch size, laying date and intensity of urbanization in four species of hole-nesting birds

Vaugoyeau, M. et al. (2016) Interspecific variation in the relationship between clutch size, laying date and intensity of urbanization in four species of hole-nesting birds. Ecology and Evolution, 6(16), pp. 5907-5920. (doi: 10.1002/ece3.2335) (PMID:27547364) (PMCID:PMC4983601)

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The increase in size of human populations in urban and agricultural areas has resulted in considerable habitat conversion globally. Such anthropogenic areas have specific environmental characteristics, which influence the physiology, life history, and population dynamics of plants and animals. For example, the date of bud burst is advanced in urban compared to nearby natural areas. In some birds, breeding success is determined by synchrony between timing of breeding and peak food abundance. Pertinently, caterpillars are an important food source for the nestlings of many bird species, and their abundance is influenced by environmental factors such as temperature and date of bud burst. Higher temperatures and advanced date of bud burst in urban areas could advance peak caterpillar abundance and thus affect breeding phenology of birds. In order to test whether laying date advance and clutch sizes decrease with the intensity of urbanization, we analyzed the timing of breeding and clutch size in relation to intensity of urbanization as a measure of human impact in 199 nest box plots across Europe, North Africa, and the Middle East (i.e., the Western Palearctic) for four species of hole-nesters: blue tits (Cyanistes caeruleus), great tits (Parus major), collared flycatchers (Ficedula albicollis), and pied flycatchers (Ficedula hypoleuca). Meanwhile, we estimated the intensity of urbanization as the density of buildings surrounding study plots measured on orthophotographs. For the four study species, the intensity of urbanization was not correlated with laying date. Clutch size in blue and great tits does not seem affected by the intensity of urbanization, while in collared and pied flycatchers it decreased with increasing intensity of urbanization. This is the first large-scale study showing a species-specific major correlation between intensity of urbanization and the ecology of breeding. The underlying mechanisms for the relationships between life history and urbanization remain to be determined. We propose that effects of food abundance or quality, temperature, noise, pollution, or disturbance by humans may on their own or in combination affect laying date and/or clutch size.

Item Type:Articles
Additional Information:The authors acknowledge funding from University Paris-Sud. H. Robles was funded by FUNDAME and Xunta de Galicia (“Angeles Alvari � no” and “Plan I2C” ~ postdoctoral programs). M. Eens and R. Pinxten acknowledge funding of FWO-Flanders and the University of Antwerp. E. Barba acknowledges funding of project CGL2013-48001-C2-1-P (Spanish Ministry of Science and Innovation). The Montpellier blue tit team acknowledges funding from the OSU-OREME, the French ANR, and the ERC (ERC-2013-StG-337365-SHE to A. Charmantier). T. Eeva acknowledges funding by the Academy of Finland (project 265859).
Glasgow Author(s) Enlighten ID:Nager, Dr Ruedi
Authors: Vaugoyeau, M., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouslama, Z., Bouvier, J.-C., Camprodon, J., Cecere, F., Charmantier, A., Charter, M., Cichoń, M., Cusimano, C., Czeszczewik, D., Demeyrier, V., Doligez, B., Doutrelant, C., Dubiec, A., Eens, M., Eeva, T., Faivre, B., Ferns, P. N., Forsman, J. T., García-Del-Rey, E., Goldshtein, A., Goodenough, A. E., Gosler, A. G., Grégoire, A., Gustafsson, L., Harnist, I., Hartley, I. R., Heeb, P., Hinsley, S. A., Isenmann, P., Jacob, S., Juškaitis, R., Korpimäki, E., Krams, I., Laaksonen, T., Lambrechts, M. M., Leclercq, B., Lehikoinen, E., Loukola, O., Lundberg, A., Mainwaring, M. C., Mänd, R., Massa, B., Mazgajski, T. D., Merino, S., Mitrus, C., Mönkkönen, M., Morin, X., Nager, R., Nilsson, J.-Å., Nilsson, S. G., Norte, A. C., Orell, M., Perret, P., Perrins, C. M., Pimentel, C. S., Pinxten, R., Richner, H., Robles, H., Rytkönen, S., Senar, J. C., Seppänen, J. T., Pascoal da Silva, L., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M. J., Tryjanowski, P., von Numers, M., Walankiewicz, W., and Møller, A. P.
College/School:College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:Ecology and Evolution
ISSN (Online):2045-7758
Published Online:25 July 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Ecology and Evolution 6(16): 5907-5920
Publisher Policy:Reproduced under a Creative Commons License

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