Population trends for Swedish breeding birds

  • Richard Ottvall Department of Biology, Lund University
  • Lars Edenius Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
  • Johan Elmberg Aquatic biology and chemistry, Kristianstad University https://orcid.org/0000-0003-2337-4155
  • Henri Engström Department of Ecology and Evolution, Uppsala University & Swedish Ornithological Society
  • Martin Green Department of Biology, Lund University
  • Niklas Holmqvist Swedish Association for Hunting and Wildlife Management
  • Åke Lindström Department of Biology, Lund University https://orcid.org/0000-0002-5597-6209
  • Tomas Pärt Department of Ecology, Swedish University of Agricultural Sciences https://orcid.org/0000-0001-7388-6672
  • Martin Tjernberg Species Information Centre, Swedish University of Agricultural Sciences
Keywords: population studies, climate effects, habitat selection

Abstract

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 long-term decline. To cover population trends for all Swedish species additional monitoring programmes are needed, in particular on owls and in mountain habitats.

Published
2009-07-01
How to Cite
Ottvall, R., Edenius, L., Elmberg, J., Engström, H., Green, M., Holmqvist, N., Lindström, Åke, Pärt, T., & Tjernberg, M. (2009). Population trends for Swedish breeding birds. Ornis Svecica, 19(3), 117-192. https://doi.org/10.34080/os.v19.22652

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