Inventering av järv 2022
The Norwegian Environment Agency (Miljødirektoratet) and the Swedish Environmental Protection Agency (Naturvårdsverket) have co-developed standard methodology and guidelines for the monitoring of wolverines in Scandinavia, that have been implemented in both Norway and Sweden since 2014. To estimate...
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ftslunivuppsala:oai:pub.epsilon.slu.se:29949 2023-05-15T18:13:04+02:00 Inventering av järv 2022 Mattisson, Jenny Höglund, Linda Hedmark, Eva Brøseth, Henrik 2022 application/pdf https://pub.epsilon.slu.se/29949/ https://pub.epsilon.slu.se/29949/1/mattisson-j-et-al-20221221.pdf en eng https://pub.epsilon.slu.se/29949/1/mattisson-j-et-al-20221221.pdf Mattisson, Jenny and Höglund, Linda and Hedmark, Eva and Brøseth, Henrik (2022). Inventering av järv 2022. (NL, NJ) > Dept. of Ecology (S) > Dept. of Ecology <https://pub.epsilon.slu.se/view/divisions/4087.html>, Sveriges lantbruksuniversitet. Bestandsstatus for store rovdyr i Skandinavia 2022:3 [Report] Ecology Report NonPeerReviewed info:eu-repo/semantics/report 2022 ftslunivuppsala 2022-12-22T17:13:50Z The Norwegian Environment Agency (Miljødirektoratet) and the Swedish Environmental Protection Agency (Naturvårdsverket) have co-developed standard methodology and guidelines for the monitoring of wolverines in Scandinavia, that have been implemented in both Norway and Sweden since 2014. To estimate population size, and assess trends, wolverine reproductive areas (female territories) are annually surveyed during late winter and spring to register whether reproductions have occurred. The population size is estimated based on the number of wolverine reproductions that fulfil established criteria for documented or probable reproductions. The monitoring of wolverine reproductions, and registration of data into the shared database Rovbase, is conducted by field staff from the County Administration Boards CAB (Länsstyrelserna) in Sweden and the Norwegian Nature Inspectorate (Statens Naturoppsyn) in Norway. In Sweden, the Sami villages (administra-tive units for reindeer herding) assist the CABs by reporting presumed den sites, which can then be evaluated in the field by CAB field personnel. During the 2022 census, a total of 164 wolverine reproductions were registered in Scandinavia, which are four more than the year before (160 reproductions). Of these, 119 reproductions were found in Sweden and 45 in Norway. This corresponds to an increase of 19 reproductions (19%) in Sweden and a decrease of 15 reproductions (-25%) in Norway, compared to 2021. The model used to estimate population size, i.e., extrapolate number of reproductions to adult individuals in the population, accounts for annual variation in reproductive success by using a three-year floating average of the number of reproductions. Based on the number of wolverine reproductions during 2020-2022, the Scandinavian population size is estimated to 1019 adult wolverines (95% CI = 861–1282), defined as 1-year old or older, which is very similar to last year’s estimate. Of the 1019 wolverines, 351 wolverines (95% CI = 283–456) are estimated to be in Norway and 668 ... Report sami järv Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive Norway Tive ENVELOPE(12.480,12.480,65.107,65.107) |
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Open Polar |
collection |
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
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ftslunivuppsala |
language |
English |
topic |
Ecology |
spellingShingle |
Ecology Mattisson, Jenny Höglund, Linda Hedmark, Eva Brøseth, Henrik Inventering av järv 2022 |
topic_facet |
Ecology |
description |
The Norwegian Environment Agency (Miljødirektoratet) and the Swedish Environmental Protection Agency (Naturvårdsverket) have co-developed standard methodology and guidelines for the monitoring of wolverines in Scandinavia, that have been implemented in both Norway and Sweden since 2014. To estimate population size, and assess trends, wolverine reproductive areas (female territories) are annually surveyed during late winter and spring to register whether reproductions have occurred. The population size is estimated based on the number of wolverine reproductions that fulfil established criteria for documented or probable reproductions. The monitoring of wolverine reproductions, and registration of data into the shared database Rovbase, is conducted by field staff from the County Administration Boards CAB (Länsstyrelserna) in Sweden and the Norwegian Nature Inspectorate (Statens Naturoppsyn) in Norway. In Sweden, the Sami villages (administra-tive units for reindeer herding) assist the CABs by reporting presumed den sites, which can then be evaluated in the field by CAB field personnel. During the 2022 census, a total of 164 wolverine reproductions were registered in Scandinavia, which are four more than the year before (160 reproductions). Of these, 119 reproductions were found in Sweden and 45 in Norway. This corresponds to an increase of 19 reproductions (19%) in Sweden and a decrease of 15 reproductions (-25%) in Norway, compared to 2021. The model used to estimate population size, i.e., extrapolate number of reproductions to adult individuals in the population, accounts for annual variation in reproductive success by using a three-year floating average of the number of reproductions. Based on the number of wolverine reproductions during 2020-2022, the Scandinavian population size is estimated to 1019 adult wolverines (95% CI = 861–1282), defined as 1-year old or older, which is very similar to last year’s estimate. Of the 1019 wolverines, 351 wolverines (95% CI = 283–456) are estimated to be in Norway and 668 ... |
format |
Report |
author |
Mattisson, Jenny Höglund, Linda Hedmark, Eva Brøseth, Henrik |
author_facet |
Mattisson, Jenny Höglund, Linda Hedmark, Eva Brøseth, Henrik |
author_sort |
Mattisson, Jenny |
title |
Inventering av järv 2022 |
title_short |
Inventering av järv 2022 |
title_full |
Inventering av järv 2022 |
title_fullStr |
Inventering av järv 2022 |
title_full_unstemmed |
Inventering av järv 2022 |
title_sort |
inventering av järv 2022 |
publishDate |
2022 |
url |
https://pub.epsilon.slu.se/29949/ https://pub.epsilon.slu.se/29949/1/mattisson-j-et-al-20221221.pdf |
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ENVELOPE(12.480,12.480,65.107,65.107) |
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Norway Tive |
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Norway Tive |
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sami järv |
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sami järv |
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https://pub.epsilon.slu.se/29949/1/mattisson-j-et-al-20221221.pdf Mattisson, Jenny and Höglund, Linda and Hedmark, Eva and Brøseth, Henrik (2022). Inventering av järv 2022. (NL, NJ) > Dept. of Ecology (S) > Dept. of Ecology <https://pub.epsilon.slu.se/view/divisions/4087.html>, Sveriges lantbruksuniversitet. Bestandsstatus for store rovdyr i Skandinavia 2022:3 [Report] |
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