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Variation in laying date in relation to spring temperature in three species of tits (Paridae) and pied flycatchers Ficedula hypoleuca in southernmost Sweden

Källander, Hans LU ; Hasselquist, Dennis LU ; Hedenström, Anders LU ; Nord, Andreas LU ; Smith, Henrik G. LU and Nilsson, Jan-Åke LU (2017) In Journal of Avian Biology 48(1). p.83-90
Abstract (Swedish)
This study documents the advancement of laying dates in three species of tits (Paridae) in southernmost Sweden during recent decades, and the absence of a similar response in the pied flycatcher Ficedula hypoleuca. It is based on several different nestbox studies; the oldest one starting in 1969. During 1969 to 2012, mean spring temperatures in the study area increased by between 0.06 and 0.08 °C per year, depending on the period considered. Great tits Parus major, blue tits Cyanistes caeruleus and marsh tits Poecile palustris, which generally start egg laying between the last week of April and the first week of May, all advanced laying date at a similar rate during the study period (0.25 days per year). This... (More)
This study documents the advancement of laying dates in three species of tits (Paridae) in southernmost Sweden during recent decades, and the absence of a similar response in the pied flycatcher Ficedula hypoleuca. It is based on several different nestbox studies; the oldest one starting in 1969. During 1969 to 2012, mean spring temperatures in the study area increased by between 0.06 and 0.08 °C per year, depending on the period considered. Great tits Parus major, blue tits Cyanistes caeruleus and marsh tits Poecile palustris, which generally start egg laying between the last week of April and the first week of May, all advanced laying date at a similar rate during the study period (0.25 days per year). This indicates that these species were similarly affected by increasing temperatures. When accounting for mean spring temperature variation, we still found an advancement of laying date over the study period, mostly due to such relationships among marsh and blue tits. This result could reflect ongoing microevolution favouring earlier laying, but could also be a result of other factors such as increased intra- or inter-specific competition for early breeding. Pied flycatchers, which generally lay during the third week of May, did not significantly advance the date of egg laying despite that the long-term trend in the increase in ambient temperature during the 30-day period preceding the start of egg laying was similar for pied flycatchers compared to the tit species. (Less)
Abstract
This study documents the advancement of laying dates in three species of tits (Paridae) in southernmost Sweden during recent decades, and the absence of a similar response in the pied flycatcher Ficedula hypoleuca. It is based on several different nestbox studies; the oldest one starting in 1969. During 1969 to 2012, mean spring temperatures in the study area increased by between 0.06 and 0.08°C per year, depending on the period considered. Great tits Parus major, blue tits Cyanistes caeruleus and marsh tits Poecile palustris, which generally start egg laying between the last week of April and the first week of May, all advanced laying date at a similar rate during the study period (0.25 d yr–1). This indicates that these species were... (More)
This study documents the advancement of laying dates in three species of tits (Paridae) in southernmost Sweden during recent decades, and the absence of a similar response in the pied flycatcher Ficedula hypoleuca. It is based on several different nestbox studies; the oldest one starting in 1969. During 1969 to 2012, mean spring temperatures in the study area increased by between 0.06 and 0.08°C per year, depending on the period considered. Great tits Parus major, blue tits Cyanistes caeruleus and marsh tits Poecile palustris, which generally start egg laying between the last week of April and the first week of May, all advanced laying date at a similar rate during the study period (0.25 d yr–1). This indicates that these species were similarly affected by increasing temperatures. When accounting for mean spring temperature variation, we still found an advancement of laying date over the study period, mostly due to such relationships among marsh and blue tits. This result could reflect ongoing microevolution favouring earlier laying, but could also be a result of other factors such as increased intra- or inter-specific competition for early breeding. Pied flycatchers, which generally lay during the third week of May, did not significantly advance the date of egg laying despite that the long-term trend in the increase in ambient temperature during the 30-d period preceding the start of egg laying was similar for pied flycatchers compared to the tit species. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ornithology, birds, phenology, breeding start, reproduction, climate change, global warming, spring temperature
in
Journal of Avian Biology
volume
48
issue
1
pages
8 pages
publisher
Federation of European Neuroscience Societies and Blackwell Publishing Ltd
external identifiers
  • scopus:85012164774
  • wos:000395032800009
ISSN
0908-8857
DOI
10.1111/jav.01287
language
English
LU publication?
yes
id
800a9219-c71a-49cc-b87e-83e56bf49220
date added to LUP
2017-02-02 22:31:38
date last changed
2017-09-18 11:35:32
@article{800a9219-c71a-49cc-b87e-83e56bf49220,
  abstract     = {This study documents the advancement of laying dates in three species of tits (Paridae) in southernmost Sweden during recent decades, and the absence of a similar response in the pied flycatcher Ficedula hypoleuca. It is based on several different nestbox studies; the oldest one starting in 1969. During 1969 to 2012, mean spring temperatures in the study area increased by between 0.06 and 0.08°C per year, depending on the period considered. Great tits Parus major, blue tits Cyanistes caeruleus and marsh tits Poecile palustris, which generally start egg laying between the last week of April and the first week of May, all advanced laying date at a similar rate during the study period (0.25 d yr–1). This indicates that these species were similarly affected by increasing temperatures. When accounting for mean spring temperature variation, we still found an advancement of laying date over the study period, mostly due to such relationships among marsh and blue tits. This result could reflect ongoing microevolution favouring earlier laying, but could also be a result of other factors such as increased intra- or inter-specific competition for early breeding. Pied flycatchers, which generally lay during the third week of May, did not significantly advance the date of egg laying despite that the long-term trend in the increase in ambient temperature during the 30-d period preceding the start of egg laying was similar for pied flycatchers compared to the tit species.},
  author       = {Källander, Hans and Hasselquist, Dennis and Hedenström, Anders and Nord, Andreas and Smith, Henrik G. and Nilsson, Jan-Åke},
  issn         = {0908-8857},
  keyword      = {ornithology,birds,phenology,breeding start,reproduction,climate change,global warming,spring temperature},
  language     = {eng},
  number       = {1},
  pages        = {83--90},
  publisher    = {Federation of European Neuroscience Societies and Blackwell Publishing Ltd},
  series       = {Journal of Avian Biology},
  title        = {Variation in laying date in relation to spring temperature in three species of tits (Paridae) and pied flycatchers <i>Ficedula hypoleuca</i> in southernmost Sweden},
  url          = {http://dx.doi.org/10.1111/jav.01287},
  volume       = {48},
  year         = {2017},
}