Projekt per år
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 2019 include data from: 575 winter point counts in 2018/2019 (44th winter), of which 285 were carried out during the Christmas/New Year count, 210 summer point count routes (45th year) and 519 Fixed routes (24th year). In the programme for covering night-active birds (10th season), 154 routes were covered on up to three occasions each (March, April and June). In addition, 401 waterbird routes (5th season) and 189 archipelago squares (5th season) were surveyed. Population trends were analyzed using TRIM and trends for 212 different bird species are presented, as well as the geographical distributions of the covered routes. Larger mammals are counted on the Night routes and the Fixed routes since 2010 and 2011 respectively, and we present short-term trends for 12 mammal species based on these two systems. We also present trends from the new schemes of water- and archipelago birds, through which we can now follow yet more species with systematic counts. In the Christmas/New Year count 2018/2019, 141,000 individuals of 139 species were counted by 233 observers. On the point count routes in summer 2019, 76,000 birds of 200 species were counted by 127 observers. From the Fixed routes 144,000 birds of 222 species were reported by 227 persons. The Night routes yielded more than 12,500 birds of 45 species, counted by 125 observers. Trend graphs for a large number of species are presented in Figs. 20–22. More graphs and indices can be found on the homepage (address below). More than 7400 mammals were counted (all surveys together), the most common being Roe Deer, Fallow Deer, European Hare, Wild Boar, Red Fox and Moose. From 2019 onwards, we also monitor frogs and toads on the Night routes. More than 64,000 birds of 103 selected species were counted on the waterbird routes. Within the system for archipelago birds, a little more than 100,000 birds of 72 selected species were registered in 2019. Over the last 10 years, there are marginally more species significantly increasing in numbers (19 %), than decreasing in numbers (15 %). For the remaining species (66 %), no statistically significant changes were recorded during the last ten years.
|Bidragets översatta titel||Monitoring population changes of birds in Sweden. Annual report for 2019.|
|Förlag||Biologiska institutionen, Lunds universitet|
|Uppdragsgivare||Swedish Environmental Protection Agency|
|Status||Published - 2020|