3 research outputs found
Population trends and carrying capacity for eurasian lynx (Lynx lynx) in Ăstergötland
No full textJordens biologiska mĂ„ngfald minskar i en allt snabbare takt, men mitt i denna ekologiska katastrof börjar arter pĂ„ vissa hĂ„ll att Ă„terkomma. De stora rovdjuren i Europa Ă€r ett sĂ„dant exempel. FrĂ„n att ha varit försvunna frĂ„n stora delar av sina utbredningsomrĂ„den Ă€r de flesta populationer numera stabila eller ökande. I Skandinavien har lodjurspopulationen expanderat och efter nĂ€rmare 100 Ă„rs reproduktiv frĂ„nvaro förekommer Ă„ter föryngringar i Sydsverige. I Ăstergötland finns i dagslĂ€get ca 50â55 individer och mycket tyder pĂ„ att stammen kommer att fortsĂ€tta öka. Genom att sammanstĂ€lla och analysera data frĂ„n inventeringsrapporter, observationsloggar och avskjutningsstatistik har jag undersökt lodjurspopulationens utveckling i Ăstergötland och berĂ€knat lĂ€nets bĂ€rkraft för lo. BerĂ€kningen av bĂ€rkraften har utgĂ„tt frĂ„n klövviltförekomsten samt mĂ€ngden lĂ€mpligt habitat. Resultaten visar att Ăstergötland har gott om lĂ€mpligt habitat och en hög bytesdensitet, som Ă€r jĂ€mförbar med flera lodjurstĂ€ta omrĂ„den i Europa. Givet dessa förutsĂ€ttningar har Ăstergötland en bĂ€rkraft för lo som ligger lĂ„ngt över dagens populationsnivĂ„. Uppskattningsvis kan Ăstergötland hĂ„lla mellan 80â140 sjĂ€lvstĂ€ndiga individer. Detta skulle innebĂ€ra en fördubbling av dagens antal och kunna leda till sĂ„vĂ€l positiva som negativa konsekvenser för samhĂ€llet. Lodjur kan innebĂ€ra ett hot mot tamboskap, men de senaste Ă„rens rapportering visar att angreppen orsakade av lodjur Ă€r begrĂ€nsade. Ăven pĂ„verkan pĂ„ klövviltstammarna Ă€r i dagslĂ€get försumbar. PĂ„ sikt skulle dock en större lodjurspopulation kunna reglera klövviltet och pĂ„ sĂ„ vis minska mĂ€ngden trafikolyckor och skador pĂ„ skog.Global biological diversity is declining at rates comparable to historic mass extinction events. Despite this, some species are returning to their former ranges, an example being the great carnivores in Europe. After being driven to the verge of extinction, most of todayâs populations have recovered to a stable level. The Eurasian lynx (Lynx lynx) has re-expanded its range in Scandinavia and, after almost 100 years, is once again reproducing in southern Sweden. There are currently about 50-55 individuals in Ăstergötland county, and many factors implies that their number will continue to grow. By collecting and analysing data from different governmental reports and other sources I have tried to cover the development of Ăstergötlandâs lynx population and to calculate the carrying capacity. The calculations are based on ungulate densities and amount of suitable habitat. The results of the study show that Ăstergötland contains a large amount of connected woodland habitat and high densities of prey, comparable to regions in Europe with high occurrence of lynx. Given these circumstances Ăstergötland has the capacity to support approximately 80-140 independent individuals. These numbers are twice as large as todayâs population level and if reached could lead to positive as well as negative consequences for society. The lynx is a known threat to livestock but reports from recent years suggests that lynx attacks on sheep in Ăstergötland are limited. The effects of the current lynx population on ungulate demographics are also negligible. Although, these effects might increase with a larger lynx population, leading to lower rates of vehicle collisions and less damage in the forestry sector
Population trends and carrying capacity for eurasian lynx (Lynx lynx) in Ăstergötland
No full textJordens biologiska mĂ„ngfald minskar i en allt snabbare takt, men mitt i denna ekologiska katastrof börjar arter pĂ„ vissa hĂ„ll att Ă„terkomma. De stora rovdjuren i Europa Ă€r ett sĂ„dant exempel. FrĂ„n att ha varit försvunna frĂ„n stora delar av sina utbredningsomrĂ„den Ă€r de flesta populationer numera stabila eller ökande. I Skandinavien har lodjurspopulationen expanderat och efter nĂ€rmare 100 Ă„rs reproduktiv frĂ„nvaro förekommer Ă„ter föryngringar i Sydsverige. I Ăstergötland finns i dagslĂ€get ca 50â55 individer och mycket tyder pĂ„ att stammen kommer att fortsĂ€tta öka. Genom att sammanstĂ€lla och analysera data frĂ„n inventeringsrapporter, observationsloggar och avskjutningsstatistik har jag undersökt lodjurspopulationens utveckling i Ăstergötland och berĂ€knat lĂ€nets bĂ€rkraft för lo. BerĂ€kningen av bĂ€rkraften har utgĂ„tt frĂ„n klövviltförekomsten samt mĂ€ngden lĂ€mpligt habitat. Resultaten visar att Ăstergötland har gott om lĂ€mpligt habitat och en hög bytesdensitet, som Ă€r jĂ€mförbar med flera lodjurstĂ€ta omrĂ„den i Europa. Givet dessa förutsĂ€ttningar har Ăstergötland en bĂ€rkraft för lo som ligger lĂ„ngt över dagens populationsnivĂ„. Uppskattningsvis kan Ăstergötland hĂ„lla mellan 80â140 sjĂ€lvstĂ€ndiga individer. Detta skulle innebĂ€ra en fördubbling av dagens antal och kunna leda till sĂ„vĂ€l positiva som negativa konsekvenser för samhĂ€llet. Lodjur kan innebĂ€ra ett hot mot tamboskap, men de senaste Ă„rens rapportering visar att angreppen orsakade av lodjur Ă€r begrĂ€nsade. Ăven pĂ„verkan pĂ„ klövviltstammarna Ă€r i dagslĂ€get försumbar. PĂ„ sikt skulle dock en större lodjurspopulation kunna reglera klövviltet och pĂ„ sĂ„ vis minska mĂ€ngden trafikolyckor och skador pĂ„ skog.Global biological diversity is declining at rates comparable to historic mass extinction events. Despite this, some species are returning to their former ranges, an example being the great carnivores in Europe. After being driven to the verge of extinction, most of todayâs populations have recovered to a stable level. The Eurasian lynx (Lynx lynx) has re-expanded its range in Scandinavia and, after almost 100 years, is once again reproducing in southern Sweden. There are currently about 50-55 individuals in Ăstergötland county, and many factors implies that their number will continue to grow. By collecting and analysing data from different governmental reports and other sources I have tried to cover the development of Ăstergötlandâs lynx population and to calculate the carrying capacity. The calculations are based on ungulate densities and amount of suitable habitat. The results of the study show that Ăstergötland contains a large amount of connected woodland habitat and high densities of prey, comparable to regions in Europe with high occurrence of lynx. Given these circumstances Ăstergötland has the capacity to support approximately 80-140 independent individuals. These numbers are twice as large as todayâs population level and if reached could lead to positive as well as negative consequences for society. The lynx is a known threat to livestock but reports from recent years suggests that lynx attacks on sheep in Ăstergötland are limited. The effects of the current lynx population on ungulate demographics are also negligible. Although, these effects might increase with a larger lynx population, leading to lower rates of vehicle collisions and less damage in the forestry sector
Population trends and carrying capacity for eurasian lynx (Lynx lynx) in Ăstergötland
No full textJordens biologiska mĂ„ngfald minskar i en allt snabbare takt, men mitt i denna ekologiska katastrof börjar arter pĂ„ vissa hĂ„ll att Ă„terkomma. De stora rovdjuren i Europa Ă€r ett sĂ„dant exempel. FrĂ„n att ha varit försvunna frĂ„n stora delar av sina utbredningsomrĂ„den Ă€r de flesta populationer numera stabila eller ökande. I Skandinavien har lodjurspopulationen expanderat och efter nĂ€rmare 100 Ă„rs reproduktiv frĂ„nvaro förekommer Ă„ter föryngringar i Sydsverige. I Ăstergötland finns i dagslĂ€get ca 50â55 individer och mycket tyder pĂ„ att stammen kommer att fortsĂ€tta öka. Genom att sammanstĂ€lla och analysera data frĂ„n inventeringsrapporter, observationsloggar och avskjutningsstatistik har jag undersökt lodjurspopulationens utveckling i Ăstergötland och berĂ€knat lĂ€nets bĂ€rkraft för lo. BerĂ€kningen av bĂ€rkraften har utgĂ„tt frĂ„n klövviltförekomsten samt mĂ€ngden lĂ€mpligt habitat. Resultaten visar att Ăstergötland har gott om lĂ€mpligt habitat och en hög bytesdensitet, som Ă€r jĂ€mförbar med flera lodjurstĂ€ta omrĂ„den i Europa. Givet dessa förutsĂ€ttningar har Ăstergötland en bĂ€rkraft för lo som ligger lĂ„ngt över dagens populationsnivĂ„. Uppskattningsvis kan Ăstergötland hĂ„lla mellan 80â140 sjĂ€lvstĂ€ndiga individer. Detta skulle innebĂ€ra en fördubbling av dagens antal och kunna leda till sĂ„vĂ€l positiva som negativa konsekvenser för samhĂ€llet. Lodjur kan innebĂ€ra ett hot mot tamboskap, men de senaste Ă„rens rapportering visar att angreppen orsakade av lodjur Ă€r begrĂ€nsade. Ăven pĂ„verkan pĂ„ klövviltstammarna Ă€r i dagslĂ€get försumbar. PĂ„ sikt skulle dock en större lodjurspopulation kunna reglera klövviltet och pĂ„ sĂ„ vis minska mĂ€ngden trafikolyckor och skador pĂ„ skog.Global biological diversity is declining at rates comparable to historic mass extinction events. Despite this, some species are returning to their former ranges, an example being the great carnivores in Europe. After being driven to the verge of extinction, most of todayâs populations have recovered to a stable level. The Eurasian lynx (Lynx lynx) has re-expanded its range in Scandinavia and, after almost 100 years, is once again reproducing in southern Sweden. There are currently about 50-55 individuals in Ăstergötland county, and many factors implies that their number will continue to grow. By collecting and analysing data from different governmental reports and other sources I have tried to cover the development of Ăstergötlandâs lynx population and to calculate the carrying capacity. The calculations are based on ungulate densities and amount of suitable habitat. The results of the study show that Ăstergötland contains a large amount of connected woodland habitat and high densities of prey, comparable to regions in Europe with high occurrence of lynx. Given these circumstances Ăstergötland has the capacity to support approximately 80-140 independent individuals. These numbers are twice as large as todayâs population level and if reached could lead to positive as well as negative consequences for society. The lynx is a known threat to livestock but reports from recent years suggests that lynx attacks on sheep in Ăstergötland are limited. The effects of the current lynx population on ungulate demographics are also negligible. Although, these effects might increase with a larger lynx population, leading to lower rates of vehicle collisions and less damage in the forestry sector
