Blar i Brage INN på forfatter "Sand, Håkan"
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Individuell atferd hos ulv overfor menneskelig infrastruktur i Skandinavia: Utredning om ulv og bosetting del 1
Carricondo-Sanchez, David; Zimmermann, Barbara; Wabakken, Petter; Eriksen, Ane; Maartmann, Erling; Sanz Perez, Ana; Sand, Håkan; Wikenros, Camilla (Skriftserien;8/2018, Research report, 2019)Ulv er kjent for å være en habitatgeneralist med ynglende bestander i mange ulike typer habitat fra arktiske strøk, boreale skoger, åpne landbruksområder og til tettbefolkede områder i varme strøk. En viktig faktor for ... -
Integrated population models poorly estimate the demographic contribution of immigration
Paquet, Matthieu; Knape, Jonas; Arlt, Debora; Forslund, Pär; Pärt, Tomas; Flagstad, Øystein; Jones, Carl; Nicoll, MAC; Norris, K; Pemberton, Josephine M.; Sand, Håkan; Svensson, Linn; Tatayah, Vikash; Wabakken, Petter; Wikenros, Camilla; Åkesson, Mikael; Low, Matthew (Peer reviewed; Journal article, 2021)1. Estimating the contribution of demographic parameters to changes in population growth is essential for understanding why populations fluctuate. Integrated population models (IPMs) offer a possibility to estimate the ... -
Integrated spatially-explicit models predict pervasive risks to recolonizing wolves in Scandinavia from human-driven mortality
Recio, Mariano R; Zimmermann, Barbara; Wikenros, Camilla; Zetterberg, Andreas; Wabakken, Petter; Sand, Håkan (Peer reviewed; Journal article, 2018) -
Kan forekomst av ulv redusere elgbeiteskader og øke tettheten av løvtrær? Utredning om ulv og elg del 4
Sand, Håkan; Mathisen, Karen Marie; Ausilio, Giorgia; Gicquel, Morgane; Wikenros, Camilla; Månsson, Johan; Wallgren, Märtha; Eriksen, Ane; Wabakken, Petter; Zimmermann, Barbara (Skriftserien;25/2019, Research report, 2019)Store rovdyr har nylig kommet tilbake til flere områder hvor de tidligere var utryddet, og dette har kastet nytt lys over deres potensielle effekter på biologisk mangfold og økosystemfunksjoner. Særlig effektene på lavere ... -
Let’s stay together? Intrinsic and extrinsic factors involved in pair bond dissolution in a recolonizing wolf population
Milleret, Cyril; Wabakken, Petter; Liberg, Olof; Åkesson, Mikael; Flagstad, Øystein; Andreassen, Harry Peter; Sand, Håkan (Journal article; Peer reviewed, 2016)For socially monogamous species, breeder bond dissolution has important consequences for population dynamics, but the extent to which extrinsic or intrinsic population factors causes pair dissolution remain poorly understood, ... -
Monitoring of wolves in Scandinavia
Liberg, Olof; Aronson, Åke; Sand, Håkan; Wabakken, Petter; Maartmann, Erling; Svensson, Linn; Åkesson, Mikael (Journal article; Peer reviewed, 2012)The Scandinavian wolf population is jointly monitored by Norwegian and Swedish authorities. Monitoring is made annually. Wolves are classified in different categories. Family groups ( 3 animals sharing a territory), ... -
No place like home? A test of the natal habitat-biased dispersal hypothesis in Scandinavian wolves
Sanz Perez, Ana; Ordiz Fernandez, Andres Avelino; Sand, Håkan; Swenson, Jon; Wabakken, Petter; Wikenros, Camilla; Zimmermann, Barbara; Åkesson, Mikael; Milleret, Cyril Pierre (Peer reviewed; Journal article, 2018) -
Of wolves and bears: Seasonal drivers of interference and exploitation competition between apex predators
Tallian, Aimee Grace; Ordiz, Andres; Metz, Matthew C.; Zimmermann, Barbara; Wikenros, Camilla; Smith, Douglas W.; Stahler, Daniel R.; Wabakken, Petter; Swenson, Jon; Sand, Håkan; Kindberg, Jonas (Peer reviewed; Journal article, 2021)Competition between apex predators can alter the strength of top-down forcing, yet we know little about the behavioral mechanisms that drive competition in multipredator ecosystems. Interactions between predators can be ... -
Of wolves and bears: Seasonal drivers of interference and exploitation competition between apex predators
Tallian, Aimee Grace; Ordiz, Andres; Metz, Matthew C.; Zimmermann, Barbara; Wikenros, Camilla; Smith, Douglas W.; Stahler, Daniel R.; Wabakken, Petter; Swenson, Jon; Sand, Håkan; Kindberg, Jonas (Peer reviewed; Journal article, 2022)Competition between apex predators can alter the strength of top-down forcing, yet we know little about the behavioral mechanisms that drive competition in multipredator ecosystems. Interactions between predators can be ... -
Oppvekstrevirets effekt på habitatvalg hos voksne ulver: Utredning om ulv og bosetting del 4
Sanz Perez, Ana; Milleret, Cyril; Ordiz, Andrés; Uzal, Antonio; Carricondo-Sanchez, David; Eriksen, Ane; Sand, Håkan; Wabakken, Petter; Wikenros, Camilla; Åkesson, Mikael; Zimmermann, Barbara (Skriftserien;11/2018, Research report, 2019)Vi undersøkte hvorvidt graden av menneskelig påvirkning i skandinaviske ulvers oppvekstrevir kunne forklare noe av variasjonen i deres habitatvalg og områdebruk i forhold til menneskelig aktivitet og infrastruktur. Først ... -
Poaching-related disappearance rate of wolves in Sweden was positively related to population size and negatively to legal culling
Liberg, Olof; Suutarinen, Johanna; Åkesson, Mikael; Andrén, Henrik; Wabakken, Petter; Wikenros, Camilla; Sand, Håkan (Peer reviewed; Journal article, 2020-03-14)Poaching is an important limiting factor for many large carnivore populations worldwide and the effect that legal culling has on poaching rate on wolf (Canis lupus) is debated. We used data linked to population monitoring ... -
Predasjonsmønster hos enslige ulver og ulver på vandring. Utredning om ulv og elg del 3
Sand, Håkan; Wikenros, Camilla; Zimmermann, Barbara; Eriksen, Ane; Holen, Frode; Wabakken, Petter (Skriftserien;24/2019, Research report, 2019)Ulven er et sosialt rovdyr, og den største andelen (oftest 80-90%) av bestanden lever i flokker eller par innenfor avgrensede revir som aktivt forsvares mot artsfrender. I tillegg består en ulvebestand av enslige ulver som ... -
Predator-dependent functional response in wolves: from food limitation to surplus killing
Zimmermann, Barbara; Sand, Håkan; Wabakken, Petter; Liberg, Olof; Andreassen, Harry Peter (Journal article; Peer reviewed, 2014)The functional response of a predator describes the change in per capita kill rate to changes in prey density. This response can be influenced by predator densities, giving a predator-dependent functional response. In ... -
Prey Selection of Scandinavian Wolves: Single Large or Several Small?
Sand, Håkan; Eklund, Ann; Zimmermann, Barbara; Wikenros, Camilla; Wabakken, Petter (Journal article; Peer reviewed, 2016)Research on large predator-prey interactions are often limited to the predators' primary prey, with the potential for prey switching in systems with multiple ungulate species rarely investigated. We evaluated wolf (Canis ... -
The return of large carnivores: Using hunter observation data to understand the role of predators on ungulate populations
Tallian, Aimee Grace; Ordiz Fernandez, Andres Avelino; Zimmermann, Barbara; Sand, Håkan; Wikenros, Camilla; Wabakken, Petter; Bergqvist, Göran; Kindberg, Jonas (Peer reviewed; Journal article, 2021)Large carnivores play a key ecological role in nature, yet quantifying the effects of predation at large spatiotemporal scales remains challenging. Wolves and brown bears have recovered in Sweden, where they share the same ... -
Rewilding by Wolf Recolonisation, Consequences for Ungulate Populations and Game Hunting
Rodríguez-Recio, Mariano; Wikenros, Camilla; Zimmermann, Barbara; Sand, Håkan (Peer reviewed; Journal article, 2022)The ongoing recolonizations of human-transformed environments in Europe by large carnivores like the wolf Canis lupus means that conservation conflicts could re-surface, among other reasons, due to predation on ungulate ... -
Sarcoptic mange in the Scandinavian wolf Canis lupus population
Fuchs, Boris; Zimmermann, Barbara; Wabakken, Petter; Bornstein, Set; Månsson, Johan; Evans, Alina L.; Liberg, Olof; Sand, Håkan; Kindberg, Jonas; Ågren, Erik O.; Arnemo, Jon Martin (Journal article; Peer reviewed, 2016)Background: Sarcoptic mange, a parasitic disease caused by the mite Sarcoptes scabiei, is regularly reported on wolves Canis lupus in Scandinavia. We describe the distribution and transmission of this parasite within the ... -
Scavenging patterns of an inbred wolf population in a landscape with a pulse of human-provided carrion
Wikenros, Camilla; Di Bernardi, Cecilia; Zimmermann, Barbara; Åkesson, Mikael; Demski, Maike; Flagstad, Øystein; Mattisson, Jenny; Tallian, Aimee Grace; Wabakken, Petter; Sand, Håkan (Peer reviewed; Journal article, 2023)Scavenging is an important part of food acquisition for many carnivore species that switch between scavenging and predation. In landscapes with anthropogenic impact, humans provide food that scavenging species can utilize. ... -
Sesongkonflikter mellom mennesker og ulv i områder med snø og trekkelg: Ulv i Slettåsreviret, 2009-2018: Utredning om ulv og bosetting del 5
Wabakken, Petter; Zimmermann, Barbara; Eriksen, Ane; Maartmann, Erling; Nordli, Kristoffer; Carricondo-Sanchez, David; Sand, Håkan; Wikenros, Camilla (Skriftserien;12/2018, Research report, 2019)Mennesker bosatt innenfor ulverevir kan observere ulv, ulvespor eller sportegn i sitt nærmiljø, og det er ikke uvanlig at det blir debatt omkring ulvenes nærhet til bosetting og hvorvidt atferden som observeres er normal ... -
Shoot, shovel and shut up: cryptic poaching slows restoration of a large carnivore in Europe
Liberg, Olof; Chapron, Guillaume; Wabakken, Petter; Pedersen, Hans Christian; Hobbs, N. Thompson; Sand, Håkan (Journal article; Peer reviewed, 2012)Poaching is a widespread and well-appreciated problem for the conservation of many threatened species. Because poaching is illegal, there is strong incentive for poachers to conceal their activities, and consequently, ...