Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years
A nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in subalpine birch forest at Ammarnäs in northern Sweden was studied in 1965–2010. The population showed on average a significantly decreasing trend during the initial 25 years, after which it remained on a static level. The yearly...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2011
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ftumeauniv:oai:DiVA.org:umu-52235 2023-10-09T21:54:33+02:00 Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years Nyholm, Erik 2011 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-52235 doi:Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Stockholm : Sveriges ornitologiska förening Ornis Svecica, 1102-6812, 2011, 21:2-4, s. 133-156 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-52235 doi:Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca Scopus 2-s2.0-84856058118 info:eu-repo/semantics/openAccess population dynamics passerine Ecology Ekologi Zoology Zoologi Article in journal info:eu-repo/semantics/article text 2011 ftumeauniv 2023-09-22T14:00:41Z A nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in subalpine birch forest at Ammarnäs in northern Sweden was studied in 1965–2010. The population showed on average a significantly decreasing trend during the initial 25 years, after which it remained on a static level. The yearly variation of the population size was significantly correlated with breeding result in preceding years, which in turn was affected by e.g. nest predation, adverse climatic factors, clutch size, and incidence of defective egg shell formation. It is also suggested that the population decline during the initial 10–15 study years followed from over-establishment of the breeding habitat. The average breeding result was 2.3 fledglings per pair, which is far below the number needed for the population to be self-reproducing. The occurrence of unusually high rates of nest predation and defective egg shells seems to be passing phenomena, predicted to approach zero after about 30 and 60 years, respectively, after the start of the study. But even with these factors eliminated and with other conditions remaining unchanged, the Ammarnäs population will continue to be a sink population. Article in Journal/Newspaper Northern Sweden Lapland Umeå University: Publications (DiVA) Ammarnäs ENVELOPE(16.210,16.210,65.958,65.958) |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
population dynamics passerine Ecology Ekologi Zoology Zoologi |
spellingShingle |
population dynamics passerine Ecology Ekologi Zoology Zoologi Nyholm, Erik Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years |
topic_facet |
population dynamics passerine Ecology Ekologi Zoology Zoologi |
description |
A nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in subalpine birch forest at Ammarnäs in northern Sweden was studied in 1965–2010. The population showed on average a significantly decreasing trend during the initial 25 years, after which it remained on a static level. The yearly variation of the population size was significantly correlated with breeding result in preceding years, which in turn was affected by e.g. nest predation, adverse climatic factors, clutch size, and incidence of defective egg shell formation. It is also suggested that the population decline during the initial 10–15 study years followed from over-establishment of the breeding habitat. The average breeding result was 2.3 fledglings per pair, which is far below the number needed for the population to be self-reproducing. The occurrence of unusually high rates of nest predation and defective egg shells seems to be passing phenomena, predicted to approach zero after about 30 and 60 years, respectively, after the start of the study. But even with these factors eliminated and with other conditions remaining unchanged, the Ammarnäs population will continue to be a sink population. |
format |
Article in Journal/Newspaper |
author |
Nyholm, Erik |
author_facet |
Nyholm, Erik |
author_sort |
Nyholm, Erik |
title |
Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years |
title_short |
Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years |
title_full |
Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years |
title_fullStr |
Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years |
title_full_unstemmed |
Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca in a subalpine birch forest in Swedish Lapland during a period of 46 years |
title_sort |
dynamics and reproduction of a nest-box breeding population of pied flycatcher ficedula hypoleuca in a subalpine birch forest in swedish lapland during a period of 46 years |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2011 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-52235 |
long_lat |
ENVELOPE(16.210,16.210,65.958,65.958) |
geographic |
Ammarnäs |
geographic_facet |
Ammarnäs |
genre |
Northern Sweden Lapland |
genre_facet |
Northern Sweden Lapland |
op_relation |
Ornis Svecica, 1102-6812, 2011, 21:2-4, s. 133-156 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-52235 doi:Dynamics and reproduction of a nest-box breeding population of Pied Flycatcher Ficedula hypoleuca Scopus 2-s2.0-84856058118 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1779318150504906752 |