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Population trends f...
Population trends for Swedish breeding birds
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- Ottvall, Richard (author)
- Department of Ecology, Lund University
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- Edenius, Lars (author)
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå
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- Elmberg, Johan, 1960- (author)
- Högskolan Kristianstad,Sektionen för lärande och miljö,Akvatisk biologi och kemi
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- Engström, Henri (author)
- Department of Ecology and Evolution, Uppsala University
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- Green, Martin (author)
- Department of Ecology, Lund University
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- Holmqvist, Niclas (author)
- Swedish Association for Hunting and Wildlife Management, Nyköping
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- Lindström, Åke (author)
- Department of Ecology, Lund University
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- Pärt, Tomas (author)
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala
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- Tjernberg, Martin (author)
- Species Information Centre, Swedish University of Agricultural Sciences, Uppsala
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Ornis Svecica. - 1102-6812. ; 19:3, s. 117-192
- Related links:
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http://www.zoo.ekol....
Abstract
Subject headings
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- We have assessed the population trends for the 255 bird species breeding in Sweden (including distinct subspecies), based on data for the last 30 and 10 years, respectively. Over the past 30 years more species have decreased (38%) than increased (32%) in numbers. In particular, formerly common farmland species have fared poorly but this is also true for some forest species. Over the past 10 years there are more species with increasing trends (29%) than there are species with decreasing trends (19%). Trends for several species in long-term decline have levelled off and have in some cases even started to increase. It is not known whether this recent change is a result of conservation efforts or simply that population numbers have stabilised at lower levels now permitted by the environment. It is therefore essential to initiate research devoted to finding factors directly linked to ongoing population changes, particularly for species in longterm decline. To cover population trends for all Swedish species additional monitoring programmes are needed, in particular on owls and in mountain habitats.
Subject headings
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologiska vetenskaper (hsv//swe)
Keyword
- Biology
- Biologi
Publication and Content Type
- ref (subject category)
- art (subject category)
- By the author/editor
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Ottvall, Richard
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Edenius, Lars
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Elmberg, Johan, ...
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Engström, Henri
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Green, Martin
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Holmqvist, Nicla ...
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Lindström, Åke
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Pärt, Tomas
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Tjernberg, Marti ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
- Articles in the publication
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Ornis Svecica
- By the university
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Kristianstad University College