Interaction of climate change with effects of conspecific and heterospecific density on reproduction

Moller, A. P. et al. (2020) Interaction of climate change with effects of conspecific and heterospecific density on reproduction. Oikos, 129(12), pp. 1807-1819. (doi: 10.1111/oik.07305)

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We studied the relationship between temperature and the coexistence of great tit Parus major and blue tit Cyanistes caeruleus, breeding in 75 study plots across Europe and North Africa. We expected an advance in laying date and a reduction in clutch size during warmer springs as a general response to climate warming and a delay in laying date and a reduction in clutch size during warmer winters due to density‐dependent effects. As expected, as spring temperature increases laying date advances and as winter temperature increases clutch size is reduced in both species. Density of great tit affected the relationship between winter temperature and laying date in great and blue tit. Specifically, as density of great tit increased and temperature in winter increased both species started to reproduce later. Density of blue tit affected the relationship between spring temperature and blue and great tit laying date. Thus, both species start to reproduce earlier with increasing spring temperature as density of blue tit increases, which was not an expected outcome, since we expected that increasing spring temperature should advance laying date, while increasing density should delay it cancelling each other out. Climate warming and its interaction with density affects clutch size of great tits but not of blue tits. As predicted, great tit clutch size is reduced more with density of blue tits as temperature in winter increases. The relationship between spring temperature and density on clutch size of great tits depends on whether the increase is in density of great tit or blue tit. Therefore, an increase in temperature negatively affected the coexistence of blue and great tits differently in both species. Thus, blue tit clutch size was unaffected by the interaction effect of density with temperature, while great tit clutch size was affected in multiple ways by these interactions terms.

Item Type:Articles
Additional Information:A. Artemyev acknowledges funding by IB KRC RAS no. 0218‐2019‐0080 and T. Eeva acknowledges funding by the Academy of Finland (project 265859). This study was funded by research project CGL‐2016‐79568‐C3‐3‐P (to J. C. Senar), from the Ministry of Economy and Competitivity, Spanish Research Council.
Keywords:Blue tit, great tit, interspecific competition, clutch size, laying date, temperature anomaly.
Glasgow Author(s) Enlighten ID:Nager, Dr Ruedi
Authors: Moller, A. P., Balbontín, J., Dhondt, A. A., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouvier, J.‐C., Camprodon, J., Cecere, F., Charter, M., Cichoń, M., Cusimano, C., Dubiec, A., Doligez, B., Eens, M., Eeva, T., Ferns, P. N., Forsman, J. T., Goldshtein, A., Goodenough, A. E., Gosler, A. G., Gustafsson, L., Harnist, I., Hartley, I. R., Heeb, P., Hinsley, S. A., Jacob, S., Järvinen, A., Juška, R., Korpimäki, E., Krams, I., Laaksonen, T., Leclercq, B., Lehikoinen, E., Loukola, O., Mainwaring, M. C., Mänd, R., Massa, B., Matthysen, E., Mazgajski, T. D., Merino, S., Mitrus, C., Mönkkönen, M., Nager, R. G., Nilsson, J.‐Å., Nilsson, S. G., Norte, A. C., von Numers, M., Orell, M., Pimentel, C. S., Pinxten, R., Priedniece, I., Remeš, V., Richner, H., Robles, H., Rytkönen, S., Senar, J. C., Seppänen, J. T., da Silva, L. P., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M. J., Török, J., Tryjanowski, P., van Noordwijk, A. J., Walankiewicz, W., and Lambrechts, M. M.
Subjects:Q Science > QH Natural history > QH301 Biology
Q Science > QL Zoology
College/School:College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:Oikos
ISSN (Online):1600-0706
Published Online:18 August 2020
Copyright Holders:Copyright © 2020 2020 Nordic Society Oikos. Published by John Wiley & Sons Ltd
First Published:First published in Oikos 129(12):1807-1819
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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