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Övervakning av fåglarnas populationsutveckling. Årsrapport för 2011.

Lindström, Åke LU orcid ; Green, Martin LU and Ottvall, Richard LU (2012)
Abstract
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 2011 include data from 589 winter point count routes in 2010/2011 (36th winter), of which 273 were carried out during the Christmas/New Year count and 262 summer point count routes (37th 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 462 Fixed routes were completed in the summer of 2011 (fourth best year). Trends were analyzed using TRIM. A programme for covering night-active birds started in 2010... (More)
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 2011 include data from 589 winter point count routes in 2010/2011 (36th winter), of which 273 were carried out during the Christmas/New Year count and 262 summer point count routes (37th 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 462 Fixed routes were completed in the summer of 2011 (fourth best year). Trends were analyzed using TRIM. A programme for covering night-active birds started in 2010 (point counts along roads with one route per 25x25 km square of the country). In 2011, 115 routes were covered at three occasions each (March, April and June). The distribution of the covered routes is presented in Figure 1. In the Christmas/New Year count 2010/2011, about 75,000 individuals of 109 species were counted by 221 observers. The winter was unusually harsh and started already in November. This certainly explains many of the dramatically low winter figures. Moderate to strong increases in winter populations over the last decade are present in seven species. Declines over the same period are prominent in nine species (Fig. 10). On the point count routes in summer 2011, about 94,000 birds of 199 species were counted by 161 observers on 262 routes. From the Fixed routes 129,000 birds of 217 species were reported by 236 persons. Trend graphs for a large number of species are presented in Fig. 11. More graphs and indices can be found on the homepage (address below). Over the last 10–12 years, the most pronounced declines are found in Grey Heron, Wigeon, Merlin, Willow Grouse, Ruff, Herring Gull, Little Gull, Swift, Siberian Tit, Goldcrest, Common Rosefinch, Ortolan, Rustic and Lapland Bunting. The strongest increases are shown by Cormorant, Greylag Goose, Red Kite, Hobby, Hazel Hen, Crane, Whimbrel, Stock Dove, Blue Tit, Great Tit, Mistle Thrush, Blackcap, Chiffchaff (both Swedish ssp.), Goldfinch, crossbills, A second consecutive hard winter, did not seem to affect cold sensitive species like Grey Heron, Wren and Goldcrest as dramatically as the year before. It was a good year for lemming-eating birds such as Rough-legged Buzzard, Long-tailed Skua, Hawk Owl and Short-eared owl. The night routes showed higher owl activity and better breeding results in the north compared to 2010. In the southern part of the country owl numbers and breeding output was lower than in 2010. Very high numbers of Quail were recorded during the night routes in 2011. The numbers of larger mammals counted were relatively similar to the year before. Both bird and mammal data from the night routes will be used for calculating trends as soon as the time series are long enough. Bird indicators were calculated for Sweden based on summer point counts and the species selection and methods of the Pan-European Common Bird Monitoring Scheme (page 14). Farmland birds (“Vanliga jordbruksfåglar”, 11 species) show a more than 50% decline since 1975. Woodland birds (“Vanliga skogsfåglar”, 26 species) have declined with about 30%, whereas a group of other common birds (“Övriga vanliga fåglar”, 21 species) have declined with about 10%. We also present the corresponding indicators based on the new system with Fixed routes (indices since 1998). All but one of six indicators turned downwards during 2010. In the recent 5–10 years, the indicators based on the two schemes have become more and more similar within each habitat. Another set of indicators, official indicators of biodiversity within the national Environmental Objectives set by the Swedish Parliament based on data from the Fixed routes, are presented as well (Fig. 6). Among these, the indicator for mountain birch forest birds is the only one showing a significant trend (negative) for the last ten years. Five indicators (lakes and streams, forest, mountain tundra, mountain birch forest and ‘a rich diversity of plant and animal life’) showed negative changes between 2010 and 2011. The indicators for birds in wetlands (both northern and southern) and farmland showed unchanged or higher values 2011 compared to 2010. (Less)
Abstract (Swedish)
I denna rapport redovisas populationstrender för 175 svenska fågelarter för åren 1975–2011. Fåglarna har räknats på vintern och på sommaren enligt strikt standardiserade metoder. Sommar- respektive vinterpunktrutter har räknats sedan 1975, i huvudsak i södra Sverige. Standardrutterna räknas också på sommaren men täcker hela Sverige. De har räknats sedan 1996. Vintern 2010/2011 räknades 75 000 fåglar av 109 arter på 273 rutter. Sommaren 2011 räknades 94 000 fåglar av 199 arter på 262 punktrutter och 129 000 fåglar av 217 arter på 462 standardrutter. På standardrutterna räknades för första gången även större däggdjur och totalt sågs 1281 djur av 17 arter. Talrikaste arterna var rådjur, fälthare, dovhjort och älg. Mest anmärkningsvärt på... (More)
I denna rapport redovisas populationstrender för 175 svenska fågelarter för åren 1975–2011. Fåglarna har räknats på vintern och på sommaren enligt strikt standardiserade metoder. Sommar- respektive vinterpunktrutter har räknats sedan 1975, i huvudsak i södra Sverige. Standardrutterna räknas också på sommaren men täcker hela Sverige. De har räknats sedan 1996. Vintern 2010/2011 räknades 75 000 fåglar av 109 arter på 273 rutter. Sommaren 2011 räknades 94 000 fåglar av 199 arter på 262 punktrutter och 129 000 fåglar av 217 arter på 462 standardrutter. På standardrutterna räknades för första gången även större däggdjur och totalt sågs 1281 djur av 17 arter. Talrikaste arterna var rådjur, fälthare, dovhjort och älg. Mest anmärkningsvärt på fågelsidan var de höga siffrorna för flera lämmelspecialister, samt att den andra kalla vintern på rad inte verkar ha haft samma svåra effekt på köldkänsliga arter (häger, gärdsmyg och kungsfågel) som året före. Över de senaste 10–15 åren uppvisar följande arter de mest oroväckande nedgångarna: dalripa, storspov, brushane, gråtrut, dvärgmås, tornseglare, spillkråka, sånglärka, hussvala, lappmes, nötkråka, kungsfågel, hämpling, rosenfink, bergfink, ortolansparv, videsparv och lappsparv. Samma period har en påtaglig ökning registrerats för grågås, sångsvan, glada, tjäder, järpe, trana, småspov, skogssnäppa, skogsduva, ringduva, kaja, talgoxe, blåmes, nötväcka, dubbeltrast, svarthätta, gransångare (båda raserna), steglits och mindre korsnäbb. Ser man på trender för hela grupper av arter går det fortsatt sämst för fåglarna i jordbrukslandskapet. Inom nattfågeltaxeringen, det nya system som startades under 2010, inventerades 115 rutter (punktrutter, en rutt per 25x25 km ruta) vid tre tillfällen (mars, april och juni) under 2011. Huvuddelen av ugglearterna registrerades i högre antal och med fler kullar under 2011 jämfört med 2010 i norra Sverige. I södra Sverige var resultatet det motsatta. Av övriga arter utmärkte sig vaktel genom att betydligt fler individer registrerades under 2011 än året innan. Större däggdjur inräknades i ungefär samma omfattning som under 2010. Både fågel- och däggdjursdata kommer att användas för trendberäkningar så snart tidsserierna blivit tillräckligt långa. (Less)
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alternative title
Monitoring population changes of birds in Sweden. Annual report for 2011
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pages
82 pages
publisher
Biologiska institutionen, Lunds universitet
project
Swedish bird monitoring
language
Swedish
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yes
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5333bafb-826c-49f6-9f8f-fe12fce8039d
date added to LUP
2021-10-19 16:42:56
date last changed
2021-11-24 16:56:19
@techreport{5333bafb-826c-49f6-9f8f-fe12fce8039d,
  abstract     = {{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 2011 include data from 589 winter point count routes in 2010/2011 (36th winter), of which 273 were carried out during the Christmas/New Year count and 262 summer point count routes (37th 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 462 Fixed routes were completed in the summer of 2011 (fourth best year). Trends were analyzed using TRIM. A programme for covering night-active birds started in 2010 (point counts along roads with one route per 25x25 km square of the country). In 2011, 115 routes were covered at three occasions each (March, April and June). The distribution of the covered routes is presented in Figure 1. In the Christmas/New Year count 2010/2011, about 75,000 individuals of 109 species were counted by 221 observers. The winter was unusually harsh and started already in November. This certainly explains many of the dramatically low winter figures. Moderate to strong increases in winter populations over the last decade are present in seven species. Declines over the same period are prominent in nine species (Fig. 10). On the point count routes in summer 2011, about 94,000 birds of 199 species were counted by 161 observers on 262 routes. From the Fixed routes 129,000 birds of 217 species were reported by 236 persons. Trend graphs for a large number of species are presented in Fig. 11. More graphs and indices can be found on the homepage (address below). Over the last 10–12 years, the most pronounced declines are found in Grey Heron, Wigeon, Merlin, Willow Grouse, Ruff, Herring Gull, Little Gull, Swift, Siberian Tit, Goldcrest, Common Rosefinch, Ortolan, Rustic and Lapland Bunting. The strongest increases are shown by Cormorant, Greylag Goose, Red Kite, Hobby, Hazel Hen, Crane, Whimbrel, Stock Dove, Blue Tit, Great Tit, Mistle Thrush, Blackcap, Chiffchaff (both Swedish ssp.), Goldfinch, crossbills, A second consecutive hard winter, did not seem to affect cold sensitive species like Grey Heron, Wren and Goldcrest as dramatically as the year before. It was a good year for lemming-eating birds such as Rough-legged Buzzard, Long-tailed Skua, Hawk Owl and Short-eared owl. The night routes showed higher owl activity and better breeding results in the north compared to 2010. In the southern part of the country owl numbers and breeding output was lower than in 2010. Very high numbers of Quail were recorded during the night routes in 2011. The numbers of larger mammals counted were relatively similar to the year before. Both bird and mammal data from the night routes will be used for calculating trends as soon as the time series are long enough. Bird indicators were calculated for Sweden based on summer point counts and the species selection and methods of the Pan-European Common Bird Monitoring Scheme (page 14). Farmland birds (“Vanliga jordbruksfåglar”, 11 species) show a more than 50% decline since 1975. Woodland birds (“Vanliga skogsfåglar”, 26 species) have declined with about 30%, whereas a group of other common birds (“Övriga vanliga fåglar”, 21 species) have declined with about 10%. We also present the corresponding indicators based on the new system with Fixed routes (indices since 1998). All but one of six indicators turned downwards during 2010. In the recent 5–10 years, the indicators based on the two schemes have become more and more similar within each habitat. Another set of indicators, official indicators of biodiversity within the national Environmental Objectives set by the Swedish Parliament based on data from the Fixed routes, are presented as well (Fig. 6). Among these, the indicator for mountain birch forest birds is the only one showing a significant trend (negative) for the last ten years. Five indicators (lakes and streams, forest, mountain tundra, mountain birch forest and ‘a rich diversity of plant and animal life’) showed negative changes between 2010 and 2011. The indicators for birds in wetlands (both northern and southern) and farmland showed unchanged or higher values 2011 compared to 2010.}},
  author       = {{Lindström, Åke and Green, Martin and Ottvall, Richard}},
  institution  = {{Biologiska institutionen, Lunds universitet}},
  language     = {{swe}},
  title        = {{Övervakning av fåglarnas populationsutveckling. Årsrapport för 2011.}},
  year         = {{2012}},
}