• norsk
    • English
  • English 
    • norsk
    • English
  • Login
View Item 
  •   Home
  • Fakultet for biovitenskap og akvakultur (FBA)
  • Artikler, rapporter og annet (FBA)
  • View Item
  •   Home
  • Fakultet for biovitenskap og akvakultur (FBA)
  • Artikler, rapporter og annet (FBA)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

A survey and GIS-based estimate of the breeding population of Great Snipe Gallinago media in Central Norway

Østnes, Jan Eivind; Kroglund, Rolf Terje; Kålås, John Atle
Journal article
Thumbnail
View/Open
K%C3%A5l%C3%A5s+A+survey+Bird+Study+61+3+2014.pdf (317.6Kb)
URI
http://hdl.handle.net/11250/275658
Date
2014
Metadata
Show full item record
Collections
  • Artikler, rapporter og annet (FBA) [396]
Original version
Bird Study 2014, 61(3):386-393   10.1080/00063657.2014.934192
Abstract
Capsule By using a GIS-model to identify suitable breeding habitats for Great Snipe in Central Norway, we

estimated a total of 276 leks holding approximately 2700 males.

Aim To estimate the size of the Great Snipe population in central parts of the species remaining breeding

areas in Western Europe.

Methods GIS-analysis identified an area of 528 km2 as suitable habitat for Great Snipe in the total study

area (22 000 km2). Complete surveys were made in 8% of these habitats by using a subset of 53 sampling

areas.

Results A total of 28 Great Snipe leks were found within the sampling areas. Ten of these were found in

previously known lek areas, while 18 leks were found in areas with no previous knowledge of leks.

Extrapolating the lek density and the lek size found in the surveyed areas, resulted in a total estimate of

276 Great Snipe leks holding approximately 2700 lekking males. The leks were found on open fens

along the forest edge and were mainly situated on base-rich bedrocks. Mean altitude of the leks was

570 m.

Conclusion The total population of Great Snipe in Norway was previously assumed to comprise

5000–15 000 lekking males or ‘pairs’. By extrapolating the densities of leks found in Central Norway to

a national scale, we expect the true breeding population of Great Snipe to be approximately 13 500

males. Changes in the elevation of the tree limit and increased overgrowth, as a result of reduced

grazing pressure and/or global warming, are possible threats that may reduce the availability of

preferred Great Snipe habitats and increase population fragmentation.
Description
-

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit
 

 

Browse

ArchiveCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDocument TypesJournalsThis CollectionBy Issue DateAuthorsTitlesSubjectsDocument TypesJournals

My Account

Login

Statistics

View Usage Statistics

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit