Naslov
Effects of spring temperatures on the first egg-laying dates of the nuthatch (Sitta europaea)
(Effects of spring temperatures on the fiest egg-laying dates of the nuthatch (Sitta europaea))

Autori
Dolenec, Zdravko

Izvornik
Israel Journal of Ecology & Evolution (1565-9801) 55 (2009), 2; 149-151

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
nuthatch; Sitta europaea; egg-laying dates; spring temperatures

Sažetak
I examined long-term changes in the egg-laying dates of thenuthatch (Sitta europaea) from 1982 to 2007 in Hrvatsko Zagorje area (northwestern Croatia) in relation to mean spring temperatura and to potential climate change effects. Negative correlations between egg-laying date and year, and egg-laying date and local temperatures (mean of March-April values) were statistically significant. Based on the linear regression slopes, the models indicate that in 2007, nuthaches laid 6.5 days earlier than in 1982. These results suggest that nuthatch breeding in the Hrvatsko Zagorje area responds to climate fluctuations by shifting the date of clutch initiation.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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