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The status of the Nordic populations of the Mallard (Anas platyrhynchos) in a changing world

Dalby, Lars; Soderquist, Par; Christensen, Thomas K.; Clausen, Preben; Einarsson, Arni; Elmberg, Johan; Fox, Anthony D.; Holmqvist, Niklas; Langendoen, Tom and Lehikoinen, Aleksi, et al. (2013) In Ornis Fennica 90(1). p.2-15
Abstract
Dabbling ducks (Anas spp.) are important migratory quarry species, protected as a shared resource under international legislation. However, there is a lack of sufficient high-quality data on vital demographic rates and long-term trends in numbers to judge the conservation status of many duck populations at the flyway level. In response to reported declines in the North-West European flyway population of the Mallard, we compiled available data on this species in the Nordic countries up to 2010. Generally, national breeding numbers showed increasing trends, wintering abundance showed variable trends, and productivity measures indicated stable or increasing trends. Major knowledge gaps were identified, namely the size of hunting bags, the... (More)
Dabbling ducks (Anas spp.) are important migratory quarry species, protected as a shared resource under international legislation. However, there is a lack of sufficient high-quality data on vital demographic rates and long-term trends in numbers to judge the conservation status of many duck populations at the flyway level. In response to reported declines in the North-West European flyway population of the Mallard, we compiled available data on this species in the Nordic countries up to 2010. Generally, national breeding numbers showed increasing trends, wintering abundance showed variable trends, and productivity measures indicated stable or increasing trends. Major knowledge gaps were identified, namely the size of hunting bags, the influence of the released Mallards and the role of short-stopping in explaining changing patterns of wintering abundance across the North-West European flyway. Numerically the Nordic breeding population appears in "good condition", and the wintering numbers have been either stable or increasing in the last two decades. The annual number of releases needs to be determined in order to judge the sustainability of the current levels of exploitation. Overall, none of the indicators showed alarming signs for the Mallard population in the Nordic countries when considered in isolation. However, the widespread decline in wintering numbers elsewhere across North-western Europe requires urgent pan-European action. (Less)
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in
Ornis Fennica
volume
90
issue
1
pages
2 - 15
publisher
BirdLife Finland
external identifiers
  • wos:000317947800002
  • scopus:84876384978
ISSN
0030-5685
project
BECC
language
English
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yes
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5e0b8307-6029-436c-8521-081277d138ab (old id 3853500)
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http://www.ornisfennica.org/pdf/early/2Dalby.pdf
date added to LUP
2013-06-20 09:10:53
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2019-07-09 02:19:00
@article{5e0b8307-6029-436c-8521-081277d138ab,
  abstract     = {Dabbling ducks (Anas spp.) are important migratory quarry species, protected as a shared resource under international legislation. However, there is a lack of sufficient high-quality data on vital demographic rates and long-term trends in numbers to judge the conservation status of many duck populations at the flyway level. In response to reported declines in the North-West European flyway population of the Mallard, we compiled available data on this species in the Nordic countries up to 2010. Generally, national breeding numbers showed increasing trends, wintering abundance showed variable trends, and productivity measures indicated stable or increasing trends. Major knowledge gaps were identified, namely the size of hunting bags, the influence of the released Mallards and the role of short-stopping in explaining changing patterns of wintering abundance across the North-West European flyway. Numerically the Nordic breeding population appears in "good condition", and the wintering numbers have been either stable or increasing in the last two decades. The annual number of releases needs to be determined in order to judge the sustainability of the current levels of exploitation. Overall, none of the indicators showed alarming signs for the Mallard population in the Nordic countries when considered in isolation. However, the widespread decline in wintering numbers elsewhere across North-western Europe requires urgent pan-European action.},
  author       = {Dalby, Lars and Soderquist, Par and Christensen, Thomas K. and Clausen, Preben and Einarsson, Arni and Elmberg, Johan and Fox, Anthony D. and Holmqvist, Niklas and Langendoen, Tom and Lehikoinen, Aleksi and Lindström, Åke and Lorentsen, Svein-Hakon and Nilsson, Leif and Poysa, Hannu and Rintala, Jukka and Sigfusson, Arnor P. and Svenning, Jens-Christian},
  issn         = {0030-5685},
  language     = {eng},
  number       = {1},
  pages        = {2--15},
  publisher    = {BirdLife Finland},
  series       = {Ornis Fennica},
  title        = {The status of the Nordic populations of the Mallard (Anas platyrhynchos) in a changing world},
  volume       = {90},
  year         = {2013},
}