Browsing NIBIO Brage by Author "Kopatz, Alexander"
Now showing items 1-14 of 14
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Female brown bears in Sør-Varanger, Norway: localities and mother-cub relationships analyzed by genetic methods
Kopatz, Alexander; Andreassen, Rune; Eiken, Hans Geir; Aarnes, Siv; Tobiassen, Camilla; Randa, Rolf; Wikan, Steinar; Hagen, Snorre (Bioforsk rapport;9(167) 2014, Research report, 2014-12-10)Knowledge on the number of female brown bears, especially reproducing females, is important for the wildlife management. One of the largest and densest populations of brown bears in Norway is located in Sør-Varanger, ... -
Genetic analysis indicates spatial-dependent patterns of sex-biased dispersal in Eurasian lynx in Finland
Herrero, Annika; Klutsch, Cornelya; Holmala, Katja; Maduna, Simo; Kopatz, Alexander; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2021-02-19)Conservation and management of large carnivores requires knowledge of female and male dispersal. Such information is crucial to evaluate the population’s status and thus management actions. This knowledge is challenging ... -
Genetic evidence of female kin clusters in a continuous population of a solitary carnivore, the Eurasian lynx
Holmala, Katja; Herrero, Annika; Kopatz, Alexander; Schregel, Julia; Eiken, Hans Geir; Hagen, Snorre (Journal article; Peer reviewed, 2018)Large terrestrial carnivores can sometimes display strong family bonds affecting the spatial distribution of related individuals. We studied the spatial genetic relatedness and family structure of female Eurasian lynx, ... -
Genetic substructure and admixture as important factors in linkage disequilibrium-based estimation of effective number of breeders in recovering wildlife populations
Kopatz, Alexander; Eiken, Hans Geir; Schregel, Julia; Aspi, Jouni; Kojola, Ilpo; Hagen, Snorre (Journal article; Peer reviewed, 2017)The number of effective breeders (Nb) and effective population size (Ne) are population parameters reflective of evolutionary potential, susceptibility to stochasticity, and viability. We have estimated these parameters ... -
Hair snares applied to detect brown bears in Øvre Anárjohka and Lemmenjoki National Parks
Eiken, Hans Geir; Ollila, Leif E.; Aspholm, Paul Eric; Ollila, Tuomo; Bergsvåg, Mari; Smith, Martin E.; Kopatz, Alexander; Magga, Sari; Sulkava, , Pekka; Aspi, Jouni; Wartiainen, Ingvild (Bioforsk rapport;4(190) 2009, Research report, 2009-12-21)There is limited knowledge on the brown bear (Ursus arctos) populations in the neighboring national parks Lemmenjoki in Finland and Øvre Anárjohka in Norway. Lemmenjoki is the largest National Park in Finland with its 2850 ... -
Harvest is associated with the disruption of social and finescale genetic structure among matrilines of a solitary large carnivore
Frank, Shane; Pelletier, Fanie; Kopatz, Alexander; Bourret, Audrey; Garant, Dany; Swenson, Jon; Eiken, Hans Geir; Hagen, Snorre; Zedrosser, Andreas (Peer reviewed; Journal article, 2020-11-27)Harvest can disrupt wildlife populations by removing adults with naturally high survival. This can reshape sociospatial structure, genetic composition, fitness, and potentially affect evolution. Genetic tools can detect ... -
Monitoring of the Pasvik-Inari-Pechenga brown bear population in 2007 and 2011 using hair-trapping
Kopatz, Alexander; Eiken, Hans Geir; Aspholm, Paul Eric; Tobiassen, Camilla; Bakke, Beate Banken; Schregel, Julia; Ollila, Tuomo; Makarova, Olga; Polikarpova, Natalia; Chizhov, Vladimir; Hagen, Snorre (Bioforsk rapport;6(148) 2011, Research report, 2011-12-22)The trans-border brown bear population of Pasvik-Inari-Pechenga (Norway-Finland-Russia) has been monitored using genetic analyses of feces collection since 2005. In addition in 2007, hair traps were systematically placed ... -
Monitoring of the Pasvik-Inari-Pechenga brown bear population in 2015 using hair-trapping
Aarnes, Siv; Kopatz, Alexander; Eiken, Hans Geir; Schregel, Julia; Aspholm, Paul Eric; Ollila, Tuomo; Makarova, Olga; Polikarpova, Natalia; Chizhov, Vladimir; Ogurtcov, Sergey; Hagen, Snorre (NIBIO Rapport;1(69), Research report, 2015)The trans-border brown bear population of Pasvik-Inari-Pechenga (Norway-Finland-Russia) has been monitored using genetic analyses of feces collection since 2005. In addition, in 2007 and 2011, hair traps were systematically ... -
Påvisning av bjørn og andre rovdyr i reinbeitedistrikt Beahceveai/Pasvik 5A/5C
Aarnes, Siv; Kopatz, Alexander; Aspholm, Paul Eric; Schregel, Julia; Solem, Arnstein; Sotkajærvi, Tom; Eiken, Hans Geir; Hagen, Snorre (Research report, 2015)Ved bruk av 10 hårfeller ble det påvist 5 ulike bjørn i kalvingslandet til reinbeitedistrikt 5A/5C fra 15 april til slutten av juni 2015. Det ble også observert individer og sportegn av jerv, gaupe og kongeørn i kalvingslandet. ... -
Påvisning av brunbjørn i den nordlige delen av Pasvikdalen i 2016 ved bruk av hårfeller og DNA analyse
Kopatz, Alexander; Eiken, Hans Geir; Randa, Rolf; Sotkajærvi, Egon; Aspholm, Paul Eric; Fløystad, Ida; Schregel, Julia; Aarnes, Siv; Hagen, Snorre (NIBIO Rapport;2(160) 2016, Research report, 2017-01-05)Brunbjørn bestanden I Pasvikdalen I Sør Varanger I Finnmark har vært overvåket med feltinnsamling av ekskrementer og hår til DNA analyse siden 2005. I 2007, 2011 og 1015 ble hårfeller systematisk plassert i det trilaterale ... -
Restoration of transborder connectivity for Fennoscandian brown bears (Ursus arctos)
Kopatz, Alexander; Kleven, Oddmund; Kojola, Ilpo; Aspi, Jouni; Norman, Anita J.; Spong, Göran; Gyllenstrand, Niclas; Dalén, Love; Fløystad, Ida; Hagen, Snorre; Kindberg, Jonas; Flagstad, Øystein (Peer reviewed; Journal article, 2021-01-03)Knowledge about the connectivity among natural populations is essential to identify management units for effective conservation actions. Conservation-minded management has led to the recovery of large carnivore populations ... -
Resultater fra bjørnehårfeller i reinbeitedistrikt Beahceveai/Pasvik 5A/5C i 2016
Aspholm, Paul Eric; Kopatz, Alexander; Sotkajærvi, Tom; Aarnes, Siv; Schregel, Julia; Tobiassen, Camilla; Fløystad, Ida; Solem, Arnstein; Ryeng, Terje; Eiken, Hans Geir; Hagen, Snorre (NIBIO Rapport;2(109) 2016, Research report, 2016-11-01)Med bruk av 12 hårfeller ble det identifisert to ulike bjørn i kalvingslandet til reinbeitedistrikt 5A/5C i perioden fra 21. april til slutten av juni 2016. Data fra e- bjeller (Findmysheep), som ble båret av 100 simler, ... -
Sex-specific genetic analysis indicates low correlation between demographic and genetic connectivity in the Scandinavian brown bear (Ursus arctos)
Schregel, Julia; Kopatz, Alexander; Eiken, Hans Geir; Swenson, Jon; Hagen, Snorre (Peer reviewed; Journal article, 2017-07-03)The degree of gene flow within and among populations, i.e. genetic population connectivity, may closely track demographic population connectivity. Alternatively, the rate of gene flow may change relative to the rate of ... -
Testing hair sampling on power poles as a potential method for DNA identification and monitoring brown bears
Kopatz, Alexander; Aspholm, Paul Eric; Rudolph, Anja; Eiken, Hans Geir; Schregel, Julia; Aarnes, Siv; Tobiassen, Camilla; Hagen, Snorre (Bioforsk rapport;9(168) 2014, Research report, 2014-12-05)Genetic methods based on sampling of feces and hairs to study brown bears have become the method of choice for many wildlife researchers and managers. Feces and hairs are the most common sample material for DNA identification ...