Complex relationships between climate and reproduction in a resident montane bird.

Autor:	Whitenack LE; Department of Biology, Ecology, Evolution and Conservation Biology Graduate Program, University of Nevada, Reno, NV, USA., Welklin JF; Department of Biology, Ecology, Evolution and Conservation Biology Graduate Program, University of Nevada, Reno, NV, USA., Branch CL; Department of Psychology, University of Western Ontario, London, Canada., Sonnenberg BR; Department of Biology, Ecology, Evolution and Conservation Biology Graduate Program, University of Nevada, Reno, NV, USA., Pitera AM; Department of Biology, Ecology, Evolution and Conservation Biology Graduate Program, University of Nevada, Reno, NV, USA., Kozlovsky DY; Department of Ecology, Evolution, and Organismal Biology, Kennesaw State University, Kennesaw, GA, USA., Benedict LM; Department of Biology, Ecology, Evolution and Conservation Biology Graduate Program, University of Nevada, Reno, NV, USA., Heinen VK; Department of Biology, Ecology, Evolution and Conservation Biology Graduate Program, University of Nevada, Reno, NV, USA., Pravosudov VV; Department of Biology, Ecology, Evolution and Conservation Biology Graduate Program, University of Nevada, Reno, NV, USA.
Jazyk:	angličtina
Zdroj:	Royal Society open science [R Soc Open Sci] 2023 Jun 21; Vol. 10 (6), pp. 230554. Date of Electronic Publication: 2023 Jun 21 (Print Publication: 2023).
DOI:	10.1098/rsos.230554
Abstrakt:	Animals use climate-related environmental cues to fine-tune breeding timing and investment to match peak food availability. In birds, spring temperature is a commonly documented cue used to initiate breeding, but with global climate change, organisms are experiencing both directional changes in ambient temperatures and extreme year-to-year precipitation fluctuations. Montane environments exhibit complex climate patterns where temperatures and precipitation change along elevational gradients, and where exacerbated annual variation in precipitation has resulted in extreme swings between heavy snow and drought. We used 10 years of data to investigate how annual variation in climatic conditions is associated with differences in breeding phenology and reproductive performance in resident mountain chickadees ( Poecile gambeli ) at two elevations in the northern Sierra Nevada mountains, USA. Variation in spring temperature was not associated with differences in breeding phenology across elevations in our system. Greater snow accumulation was associated with later breeding initiation at high, but not low, elevation. Brood size was reduced under drought, but only at low elevation. Our data suggest complex relationships between climate and avian reproduction and point to autumn climate as important for reproductive performance, likely via its effect on phenology and abundance of invertebrates. Competing Interests: We declare we have no competing interests. (© 2023 The Authors.)
Databáze:	MEDLINE
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