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Onset of breeding among Swedish Starlings Sturnus vulgaris in relation to spring temperature in 1981-2003

Svensson, Sören LU (2004) In Ornis Svecica 14(3). p.117-128
Abstract
Both spring temperature and date of the first Starling Sturnus vulgaris egg were highly correlated between different study sites and weather stations in the southern half of Sweden. In southern Sweden, but not in northern Sweden, onset of breeding correlated strongly with spring temperature, particularly during the last ten days of April, the period that happens to coincide with the start of breeding. The response was one to two days per degree. No response was found with periods relative to the start of egg-laying, indicating that in the latter part of April the general conditions for breeding are normally satisfied as soon as temperature reaches a certain level. Possible climatic trends were too weak to be detected in the noise of the... (More)
Both spring temperature and date of the first Starling Sturnus vulgaris egg were highly correlated between different study sites and weather stations in the southern half of Sweden. In southern Sweden, but not in northern Sweden, onset of breeding correlated strongly with spring temperature, particularly during the last ten days of April, the period that happens to coincide with the start of breeding. The response was one to two days per degree. No response was found with periods relative to the start of egg-laying, indicating that in the latter part of April the general conditions for breeding are normally satisfied as soon as temperature reaches a certain level. Possible climatic trends were too weak to be detected in the noise of the annual fluctuations. The best current estimate of long-term spring temperature increase during the next one hundred years is four degrees, which would mean that the Starling will start egg-laying 4-8 days earlier at the end of the present than at the end of the previous century. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ornis Svecica
volume
14
issue
3
pages
117 - 128
publisher
Sveriges Ornitologiska Förening
external identifiers
  • scopus:5544269029
ISSN
1102-6812
language
English
LU publication?
yes
id
841f5c20-3886-465a-bebd-894a5dce4dd7 (old id 153146)
date added to LUP
2007-06-25 14:01:17
date last changed
2017-01-01 07:15:30
@article{841f5c20-3886-465a-bebd-894a5dce4dd7,
  abstract     = {Both spring temperature and date of the first Starling Sturnus vulgaris egg were highly correlated between different study sites and weather stations in the southern half of Sweden. In southern Sweden, but not in northern Sweden, onset of breeding correlated strongly with spring temperature, particularly during the last ten days of April, the period that happens to coincide with the start of breeding. The response was one to two days per degree. No response was found with periods relative to the start of egg-laying, indicating that in the latter part of April the general conditions for breeding are normally satisfied as soon as temperature reaches a certain level. Possible climatic trends were too weak to be detected in the noise of the annual fluctuations. The best current estimate of long-term spring temperature increase during the next one hundred years is four degrees, which would mean that the Starling will start egg-laying 4-8 days earlier at the end of the present than at the end of the previous century.},
  author       = {Svensson, Sören},
  issn         = {1102-6812},
  language     = {eng},
  number       = {3},
  pages        = {117--128},
  publisher    = {Sveriges Ornitologiska Förening},
  series       = {Ornis Svecica},
  title        = {Onset of breeding among Swedish Starlings Sturnus vulgaris in relation to spring temperature in 1981-2003},
  volume       = {14},
  year         = {2004},
}