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Possible density-dependence in an expanding population of Greylag Goose Anser anser in South Sweden.

Nilsson, Leif LU (2016) In Wildfowl 66. p.98-111
Abstract
Neck-banded Greylag Geese Anser anser breeding in southwest Sweden were studied from 1984–2012 inclusive, to determine annual variation in the number of breeding pairs, reproductive success and survival rates, as part of a larger programme of monitoring individual geese across the Nordic countries. Numbers breeding in the study area increased from 120 pairs in 1984 to 1,240 pairs in 2008, followed by a decrease to about 800 pairs. As the number of nesting pairs of Greylag Geese increased, the proportion of pairs producing young decreased, suggesting densitydependence effects on the production of young. The decline in the proportion of breeding pairs occurred later at a lake thought to offer better feeding areas for the young than at a... (More)
Neck-banded Greylag Geese Anser anser breeding in southwest Sweden were studied from 1984–2012 inclusive, to determine annual variation in the number of breeding pairs, reproductive success and survival rates, as part of a larger programme of monitoring individual geese across the Nordic countries. Numbers breeding in the study area increased from 120 pairs in 1984 to 1,240 pairs in 2008, followed by a decrease to about 800 pairs. As the number of nesting pairs of Greylag Geese increased, the proportion of pairs producing young decreased, suggesting densitydependence effects on the production of young. The decline in the proportion of breeding pairs occurred later at a lake thought to offer better feeding areas for the young than at a second lake in the study area. There was no marked decrease in the mean brood size among productive pairs, only a slight decrease in the fledging rate. There was also no clear trend during the study in first-year survival rates for geese neck-banded at fledging. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Wildfowl
volume
66
pages
14 pages
publisher
Wildfowl and Wetlands Trust
external identifiers
  • scopus:85016948892
language
English
LU publication?
yes
id
0b2aa452-429a-475c-8d05-5df1732e37f5
alternative location
http://wildfowl.wwt.org.uk/index.php/wildfowl/article/view/2646
date added to LUP
2016-12-12 13:57:05
date last changed
2017-05-14 04:46:08
@article{0b2aa452-429a-475c-8d05-5df1732e37f5,
  abstract     = {Neck-banded Greylag Geese Anser anser breeding in southwest Sweden were studied from 1984–2012 inclusive, to determine annual variation in the number of breeding pairs, reproductive success and survival rates, as part of a larger programme of monitoring individual geese across the Nordic countries. Numbers breeding in the study area increased from 120 pairs in 1984 to 1,240 pairs in 2008, followed by a decrease to about 800 pairs. As the number of nesting pairs of Greylag Geese increased, the proportion of pairs producing young decreased, suggesting densitydependence effects on the production of young. The decline in the proportion of breeding pairs occurred later at a lake thought to offer better feeding areas for the young than at a second lake in the study area. There was no marked decrease in the mean brood size among productive pairs, only a slight decrease in the fledging rate. There was also no clear trend during the study in first-year survival rates for geese neck-banded at fledging.},
  author       = {Nilsson, Leif},
  language     = {eng},
  pages        = {98--111},
  publisher    = {Wildfowl and Wetlands Trust},
  series       = {Wildfowl},
  title        = {Possible density-dependence in an expanding population of Greylag Goose <em>Anser anser</em> in South Sweden.},
  volume       = {66},
  year         = {2016},
}