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Changes in numbers and distribution of breeding waterfowl in the Swedish mountain chain between 1972–1975 and 2009

Nilsson, Leif LU and Nilsson, Johan LU (2012) In Ornis Svecica 22(3-4). p.107-126
Abstract
During 1972–1975, the breeding waterfowl populations of the northern parts of Fennoscandia (south to 65° N in Sweden) were surveyed for the first time. In 2009, a new survey was undertaken in the Swedish part of the mountain chain. Censuses were performed from the air in transects of 5×5 km squares and in special areas. The distribution of the different species was largely similar between the two periods but there were a number of differences on the regional level. Most species had more or less the same population sizes but there were some variation in the different parts of the mountains. Three species showed clear increases between the periods. Cygnus cygnus had the same increase in the mountain chain as in the rest of the country.... (More)
During 1972–1975, the breeding waterfowl populations of the northern parts of Fennoscandia (south to 65° N in Sweden) were surveyed for the first time. In 2009, a new survey was undertaken in the Swedish part of the mountain chain. Censuses were performed from the air in transects of 5×5 km squares and in special areas. The distribution of the different species was largely similar between the two periods but there were a number of differences on the regional level. Most species had more or less the same population sizes but there were some variation in the different parts of the mountains. Three species showed clear increases between the periods. Cygnus cygnus had the same increase in the mountain chain as in the rest of the country. Melanitta nigra was about four times as common in 2009 compared to the 1970s and Mergus merganser also had higher counts in 2009. Melanitta fusca decreased (Less)
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author
organization
alternative title
Förändringar i antal och utbredning av häckande sjöfåglar i svenska fjällkedjan mellan 1972–1975 och 2009
publishing date
type
Contribution to journal
publication status
published
subject
in
Ornis Svecica
volume
22
issue
3-4
pages
107 - 126
publisher
Sveriges Ornitologiska Förening
external identifiers
  • Scopus:84875335256
ISSN
1102-6812
language
English
LU publication?
yes
id
94bcf08d-5305-4285-af6a-0331f1468e31 (old id 4693422)
date added to LUP
2014-10-03 11:24:38
date last changed
2016-10-13 04:30:39
@misc{94bcf08d-5305-4285-af6a-0331f1468e31,
  abstract     = {During 1972–1975, the breeding waterfowl populations of the northern parts of Fennoscandia (south to 65° N in Sweden) were surveyed for the first time. In 2009, a new survey was undertaken in the Swedish part of the mountain chain. Censuses were performed from the air in transects of 5×5 km squares and in special areas. The distribution of the different species was largely similar between the two periods but there were a number of differences on the regional level. Most species had more or less the same population sizes but there were some variation in the different parts of the mountains. Three species showed clear increases between the periods. Cygnus cygnus had the same increase in the mountain chain as in the rest of the country. Melanitta nigra was about four times as common in 2009 compared to the 1970s and Mergus merganser also had higher counts in 2009. Melanitta fusca decreased},
  author       = {Nilsson, Leif and Nilsson, Johan},
  issn         = {1102-6812},
  language     = {eng},
  number       = {3-4},
  pages        = {107--126},
  publisher    = {ARRAY(0x8b5ce50)},
  series       = {Ornis Svecica},
  title        = {Changes in numbers and distribution of breeding waterfowl in the Swedish mountain chain between 1972–1975 and 2009},
  volume       = {22},
  year         = {2012},
}