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

Anders Møller 1, 2, * Javier Balbontín 3 André Dhondt 4 Frank Adriaensen 5 Alexandr Artemyev 6 Jerzy Bańbura 7 Emilio Barba 8 Clotilde Biard 9 Jacques Blondel 10 Jean‐charles Bouvier 11 Jordi Camprodon 12 Francesco Cecere Motti Charter 13 Mariusz Cichoń 14 Camillo Cusimano 15 Anna Dubiec 16 Blandine Doligez 17 Marcel Eens 5 Tapio Eeva 18 Peter Ferns 19 Jukka Forsman 20 Aya Goldshtein 21 Anne Goodenough 22 Andrew Gosler 23 Lars Gustafsson 24 Iga Harnist 16 Ian Hartley 25 Philippe Heeb 26 Shelley Hinsley 27 Staffan Jacob 28 Antero Järvinen 29 Rimvydas Juškaitis 30 Erkki Korpimäki 18 Indrikis Krams 31 Toni Laaksonen 18 Bernard Leclercq Esa Lehikoinen 18 Olli Loukola 20 Mark Mainwaring 32 Raivo Mänd 31 Bruno Massa 15 Erik Matthysen 5 Tomasz Mazgajski 16 Santiago Merino 33 Cezary Mitrus 34 Mikko Mönkkönen 35 Ruedi Nager 36 Jan‐åke Nilsson 37 Sven Nilsson 37 Ana Norte 38 Mikael von Numers 39 Markku Orell 20 Carla Pimentel 40 Rianne Pinxten 5 Ilze Priedniece 41 Vladimir Remeš 42 Heinz Richner 43 Hugo Robles 44, 5 Seppo Rytkönen 20 Juan Senar 45 Janne Seppänen 35 Luís da Silva 46 Tore Slagsvold 47 Tapio Solonen 48 Alberto Sorace 49 Martyn Stenning 50 János Török 51 Piotr Tryjanowski 52 Arie van Noordwijk 53 Wiesław Walankiewicz 34 Marcel Lambrechts 10
* Corresponding author
Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-03038145
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Submitted on : Thursday, December 3, 2020 - 12:22:52 PM
Last modification on : Thursday, September 16, 2021 - 3:46:27 AM
Long-term archiving on: : Thursday, March 4, 2021 - 7:03:42 PM

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Anders Møller, Javier Balbontín, André Dhondt, Frank Adriaensen, Alexandr Artemyev, et al.. Interaction of climate change with effects of conspecific and heterospecific density on reproduction. Oikos, Nordic Ecological Society, 2020, 129, pp.1807 - 1819. ⟨10.1111/oik.07305⟩. ⟨hal-03038145⟩

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