Övervakning av fåglarnas populationsutveckling. Årsrapport för 2012.

• Main Authors: Lindström, Åke, Green, Martin
• Format: Report
• Language: Swedish
• Published: Biologiska institutionen, Lunds universitet 2013
• Subjects: Ecology; Common Eider; rock ptarmigan; Lapland
• Online Access: https://lup.lub.lu.se/record/ca3a1e94-70ae-4ef7-b2c8-9cd3b083b578

We present the results of the Swedish Bird Survey, run by the Department of Biology, Lund University, as a part of the National Monitoring Programme of the Swedish Environmental Protection Agency. The results for 2012 include data from 625 winter point count routes in 2011/2012 (37th winter), of which 306 were carried out during the Christmas/New Year count and 263 summer point count routes (38th year). A third programme is running since 1996 with 716 Fixed routes, systematically (semi-randomly) distributed over Sweden (combined line transect and point counts). In total 481 Fixed routes were completed in the summer of 2012 (fourth best year). In the programme for covering night-active birds (3rd season), 112 routes were covered at three occasions each (March, April and June). Trends were analyzed using TRIM. The distribution of the covered routes is presented in Figure 1. In the Christmas/New Year count 2011/2012, about 180,000 individuals of 134 species were counted by 247 observers, which was an increase compared to previous winters. Moderate to strong increases in winter populations over the last decade are present in 12 species. Declines over the same period are prominent in 32 species (Fig. 12). On the point count routes in summer 2012, about 96,000 birds of 205 species were counted by 164 observers. From the Fixed routes 138,000 birds of 217 species were reported by 247 persons. Trend graphs for a large number of species are presented in Fig. 12. More graphs and indices can be found on the homepage (address below). Over the last 10 years, some of the most pronounced declines are found in Common Eider, Willow Ptarmigan, Rock Ptarmigan, Common Pheasant, Common Coot, Spotted Redshank, Great Black-backed Gull, Common Swift, House Martin, Sand Martin, Siberian Tit, Fieldfare, Redwing, Goldcrest, Meadow Pipit, European Greenfinch, Common Redpoll, Common Rosefinch, Lapland Longspur, Yellowhammer, Ortolan and Rustic Bunting. Some of the strongest increases during the same period are shown by Greylag Goose, Whooper ...