Regional trends amongst Danish specialist farmland breeding birds
The mean rates of change in annual abundance for 16 farmland specialist breeding bird species based on point counts from three regions of Denmark (West, Central and East) during 1987-2015 inclusive were analysed to see if grassland and arable specialists were showing regional changes that could be r...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/b264edb7-2463-49f1-87ad-3dc3875fbd8d 2023-12-24T10:18:24+01:00 Regional trends amongst Danish specialist farmland breeding birds Heldbjerg, Henning Fox, Anthony David 2016-11-29 https://pure.au.dk/portal/da/publications/regional-trends-amongst-danish-specialist-farmland-breeding-birds(b264edb7-2463-49f1-87ad-3dc3875fbd8d).html eng eng https://pure.au.dk/portal/da/publications/regional-trends-amongst-danish-specialist-farmland-breeding-birds(b264edb7-2463-49f1-87ad-3dc3875fbd8d).html info:eu-repo/semantics/restrictedAccess Heldbjerg , H & Fox , A D 2016 , ' Regional trends amongst Danish specialist farmland breeding birds ' , Dansk Ornitologisk Forenings Tidsskrift , vol. 110 , no. 4 , pp. 214-222 . article 2016 ftuniaarhuspubl 2023-11-29T23:59:31Z The mean rates of change in annual abundance for 16 farmland specialist breeding bird species based on point counts from three regions of Denmark (West, Central and East) during 1987-2015 inclusive were analysed to see if grassland and arable specialists were showing regional changes that could be related to their respective specializations. Generally, few species showed differences in regional population trends, despite the increasing concentration of mixed (mainly pastoral) agriculture in the West and predominantly arable cultivation in the East. Most grassland and arable specialists were declining in all regions. Only Mew Gull Larus canus showed consistent increases in all regions, Western Marsh Harrier Circus aeruginosus and Common Whitethroat Sylvia communis showed increases in the East and West while Barn Swallow Hirundo rustica showed little change in abundance anywhere during the period. Corn Bunting Emberiza calandra showed significant declines in the East of Denmark in contrast to stable trends in the Central and Western regions, but was declining everywhere since 2003. The results underline the need to understand how individual farmland species exploit specific crops and micro-biotopes as well as the combination of different crops. Article in Journal/Newspaper Larus canus Aarhus University: Research |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
The mean rates of change in annual abundance for 16 farmland specialist breeding bird species based on point counts from three regions of Denmark (West, Central and East) during 1987-2015 inclusive were analysed to see if grassland and arable specialists were showing regional changes that could be related to their respective specializations. Generally, few species showed differences in regional population trends, despite the increasing concentration of mixed (mainly pastoral) agriculture in the West and predominantly arable cultivation in the East. Most grassland and arable specialists were declining in all regions. Only Mew Gull Larus canus showed consistent increases in all regions, Western Marsh Harrier Circus aeruginosus and Common Whitethroat Sylvia communis showed increases in the East and West while Barn Swallow Hirundo rustica showed little change in abundance anywhere during the period. Corn Bunting Emberiza calandra showed significant declines in the East of Denmark in contrast to stable trends in the Central and Western regions, but was declining everywhere since 2003. The results underline the need to understand how individual farmland species exploit specific crops and micro-biotopes as well as the combination of different crops. |
format |
Article in Journal/Newspaper |
author |
Heldbjerg, Henning Fox, Anthony David |
spellingShingle |
Heldbjerg, Henning Fox, Anthony David Regional trends amongst Danish specialist farmland breeding birds |
author_facet |
Heldbjerg, Henning Fox, Anthony David |
author_sort |
Heldbjerg, Henning |
title |
Regional trends amongst Danish specialist farmland breeding birds |
title_short |
Regional trends amongst Danish specialist farmland breeding birds |
title_full |
Regional trends amongst Danish specialist farmland breeding birds |
title_fullStr |
Regional trends amongst Danish specialist farmland breeding birds |
title_full_unstemmed |
Regional trends amongst Danish specialist farmland breeding birds |
title_sort |
regional trends amongst danish specialist farmland breeding birds |
publishDate |
2016 |
url |
https://pure.au.dk/portal/da/publications/regional-trends-amongst-danish-specialist-farmland-breeding-birds(b264edb7-2463-49f1-87ad-3dc3875fbd8d).html |
genre |
Larus canus |
genre_facet |
Larus canus |
op_source |
Heldbjerg , H & Fox , A D 2016 , ' Regional trends amongst Danish specialist farmland breeding birds ' , Dansk Ornitologisk Forenings Tidsskrift , vol. 110 , no. 4 , pp. 214-222 . |
op_relation |
https://pure.au.dk/portal/da/publications/regional-trends-amongst-danish-specialist-farmland-breeding-birds(b264edb7-2463-49f1-87ad-3dc3875fbd8d).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1786207329416380416 |