Browsing Brage INN by Author "Sand, Håkan"
Now showing items 1-20 of 69
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Activity patterns of predator and prey : a simultaneous study of GPS-collared wolves and moose
Eriksen, Ane; Wabakken, Petter; Zimmermann, Barbara; Andreassen, Harry Peter; Arnemo, Jon Martin; Gundersen, Hege; Liberg, Olof; Linnell, John; Milner, Jos M.; Pedersen, Hans Christian; Sand, Håkan; Solberg, Erling J.; Storaas, Torstein (Journal article; Peer reviewed, 2011)We studied the simultaneous activity patterns of a breeding wolf, Canis lupus, pair and five adult moose, Alces alces, cows from April to November 2004 in a wolf territory in southeastern Norway. All study animals were GPS ... -
Agent-based models predict patterns and identify constraints of large carnivore recolonizations, a case study of wolves in Scandinavia
Recio, Mariano R.; Singer, Alexander; Wabakken, Petter; Sand, Håkan (Peer reviewed; Journal article, 2020)Large carnivores are recolonizing areas of their historical range in Europe. This process has strong implications for conservation and management related to human-wildlife conflicts. Analyses and modelling of the observed ... -
Atferdsstudier på ulv i Slettås- og Osdalsreviret: Foreløpige resultater fra feltperioden januar–februar 2017
Zimmermann, Barbara; Wabakken, Petter; Eriksen, Ane; Maartmann, Erling; Holen, Frode; Dahl, Espen R.; Nordli, Kristoffer; Teräväinen, Malin; Fuchs, Boris; Svarstad, Ingvild B.; Fredriksson, Øyvind; Sand, Håkan; Wikenros, Camilla (Oppdragsrapport;1/2017, Research report, 2017)Ulver i Slettåsreviret har i flere år blitt beskrevet som nærgående av lokalbefolkningen og media. Fem individer av flokken ble derfor merket med GPS-halsbånd i januar 2017, samtidig som ni ulver fra naboflokken i Osdalsreviret ... -
Behavioral responses of wolves to roads: scale-dependent ambivalence
Zimmermann, Barbara; Nelson, Lindsey; Wabakken, Petter; Sand, Håkan; Liberg, Olof (Journal article; Peer reviewed, 2014)Throughout their recent recovery in several industrialized countries, large carnivores have had to cope with a changed landscape dominated by human infrastructure. Population growth depends on the ability of individuals ... -
Building a mechanistic understanding of predation with GPS-based movement data
Merrill, Evelyn; Sand, Håkan; Zimmermann, Barbara; McPhee, Heather; Webb, Nathan; Hebblewhite, Mark; Wabakken, Petter; Frair, Jacqueline (Journal article; Peer reviewed, 2010)Quantifying kill rates and sources of variation in kill rates remains an important challenge in linking predators to their prey. We address current approaches to using GPS-based movement data for quantifying key predation ... -
Competition between apex predators? Brown bears decrease wolf kill rate on two continents
Tallian, Aimee; Ordiz, Andres; Metz, Matthew C.; Milleret, Cyril; Wikenros, Camilla; Smith, Douglas W.; Stahler, Daniel R.; Kindberg, Jonas; MacNulty, Daniel R.; Wabakken, Petter; Swenson, Jon; Sand, Håkan (Journal article; Peer reviewed, 2017)Trophic interactions are a fundamental topic in ecology, but we know little about how competition between apex predators affects predation, the mechanism driving top-down forcing in ecosystems.We used long-term datasets ... -
Data to model risks for recolonizing wolves in Scandinavia through the integration of territory presence and human-driven mortalities
Recio, Mariano R; Zimmermann, Barbara; Wikenros, Camilla; Zetterberg, Andreas; Wabakken, Petter; Sand, Håkan (Peer reviewed; Journal article, 2018) -
Decomposing risk: landscape structure and wolf behavior generate different predation patterns in two sympatric ungulates
Gervasi, Vincenzo; Sand, Håkan; Zimmermann, Barbara; Mattisson, Jenny; Wabakken, Petter; Linnell, John D.C. (Journal article; Peer reviewed, 2013)Recolonizing carnivores can have a large impact on the status of wild ungulates, which have often modified their behavior in the absence of predation. Therefore, understanding the dynamics of reestablished predator–prey ... -
Ecological Effects of Wolves in Anthropogenic Landscapes: The Potential for Trophic Cascades Is Context-Dependent
Ausilio, Giorgia; Sand, Håkan; Månsson, Johan; Mathisen, Karen Marie; Wikenros, Camilla (Peer reviewed; Journal article, 2021)In recent years, large predators have made a comeback across large parts of Europe. However, little is known about the impact that recolonizing predators may have on ecosystems with high degrees of anthropogenic influence. ... -
Effects of large carnivores, hunter harvest, and weather on the mortality of moose calves in a partially migratory population
Ausilio, Giorgia; Sand, Håkan; Wikenros, Camilla; Aronsson, Malin; Milleret, Cyril Pierre; Nordli, Kristoffer; Wabakken, Petter; Eriksen, Ane; Persson, Jens; Maartmann, Erling; Mathisen, Karen Marie; Zimmermann, Barbara (Peer reviewed; Journal article, 2023)Survival of juvenile ungulates represents an important demographic parameter that influences population dynamics within ecosystems. In many ecological systems, the mortality of juvenile ungulates is influenced by various ... -
Elg i ulverevir: predasjon og elgjakt. Utredning om ulv og elg del 2
Zimmermann, Barbara; Wikenros, Camilla; Sand, Håkan; Eriksen, Ane; Wabakken, Petter (Skriftserien;23/2019, Research report, 2019)I Skandinavia er ulvebestanden regulert av jakt. Dette medfører at ulvens påvirkning på byttedyrbestandene begrenses sammenlignet med uregulerte rovviltbestander og hovedsakelig konsentreres til områder med stasjonære, ... -
Environmental and anthropogenic features mediate risk from human hunters and wolves for moose
Ausilio, Giorgia; Wikenros, Camilla; Sand, Håkan; Wabakken, Petter; Eriksen, Ane; Zimmermann, Barbara (Peer reviewed; Journal article, 2022)Landscape characteristics, seasonal changes in the environment, and daylight conditions influence space use and detection of prey and predators, resulting in spatiotemporal patterns of predation risk for the prey. When ... -
Genetic signature of immigrants and their effect on genetic diversity in the recently established Scandinavian wolf population
Åkesson, Mikael; Flagstad, Øystein; Aspi, Jouni; Kojola, Ilpo; Liberg, Olof; Wabakken, Petter; Sand, Håkan (Peer reviewed; Journal article, 2021)Transboundary connectivity is a key component when conserving and managing animal species that require large areas to maintain viable population sizes. Wolves Canis lupus recolonized the Scandinavian Peninsula in the early ... -
Genomic consequences of intensive inbreeding in an isolated wolf population
Kardos, Marty; Åkesson, Mikael; Fountain, Toby; Flagstad, Øystein; Liberg, Olof; Olason, Pall; Sand, Håkan; Wabakken, Petter; Wikenros, Camilla; Ellegren, Hans (Journal article, 2017)Inbreeding (mating between relatives) is a major concern for conservation as it decreases the fitness of offspring and can increase the extinction risk of populations. While pedigrees have traditionally been used to measure ... -
Gränsöverskridande älgförvaltning - Ekologiska förutsättningar
Ausilio, Giorgia; Zimmermann, Barbara; Sand, Håkan; Wikenros, Camilla; Eriksen, Ane; Wabakken, Petter; Nordli, Kristoffer; Furuhovde, Erlend; Maartmann, Erling; Devineau, Olivier; Aronsson, Malin; Mathisen, Karen Marie (Oppdragsrapport;11/2023, Research report, 2023)Gjensidige påvirkninger mellom rovdyr og byttedyr formes av flere ulike faktorer inklusive type landskap de lever i og rovdyrenes jaktmetode. I landskap påvirket av mennesker kan disse interaksjonene endres av aktiviteter ... -
GRENSEVILT 2 - Sluttrapport til Interreg Sverige-Norge
Wikenros, Camilla; Zimmermann, Barbara; Eriksen, Ane; Esselin, Anders; Falkevik, Maria; Lund, Pia Knøsen; Løken, Øivind; Nordström, Jonas; Sand, Håkan; Wabakken, Petter (Commissioned report;8/2023, Research report, 2023)Indre Skandinavia kjennetegnes av et sammenhengende barskogområde med store viltbestander (naturarv) som preger regionens skogbruk og jakt (kulturarv). Til tross for at naturressursene er grenseoverskridende, forvaltes og ... -
Habitat segregation between brown bears and grey wolves in a human-dominated landscape
Milleret, Cyril Pierre; Ordiz Fernandez, Andres Avelino; Chapron, Guillaume; Andreassen, Harry Peter; Kindberg, Jonas; Månsson, Johan; Tallian, Aimee; Wabakken, Petter; Wikenros, Camilla; Zimmermann, Barbara; Swenson, Jon; Sand, Håkan (Peer reviewed; Journal article, 2018) -
Impact of a recolonizing, cross‑border carnivore population on ungulate harvest in Scandinavia
Wikenros, Camilla; Sand, Håkan; Månsson, Johan; Maartmann, Erling; Eriksen, Ane; Wabakken, Petter; Zimmermann, Barbara (Peer reviewed; Journal article, 2020)Predation from large carnivores and human harvest are the two main mortality factors afecting the dynamics of many ungulate populations. We examined long-term moose (Alces alces) harvest data from two countries that share ... -
Individual variation in predatory behavior, scavenging and seasonal prey availability as potential drivers of coexistence between wolves and bears
Ordiz, Andres; Milleret, Cyril Pierre; Uzal, Antonio; Zimmermann, Barbara; Wabakken, Petter; Wikenros, Camilla; Sand, Håkan; Swenson, Jon; Kindberg, Jonas (Peer reviewed; Journal article, 2020)Several large carnivore populations are recovering former ranges, and it is important to understand interspecific interactions between overlapping species. In Scandinavia, recent research has reported that brown bear ... -
Individual Variation in Predatory Behavior, Scavenging and Seasonal Prey Availability as Potential Drivers of Coexistence between Wolves and Bears
Ordiz Fernandez, Andres Avelino; Milleret, Cyril Pierre; Uzal, Antonio; Zimmermann, Barbara; Wabakken, Petter; Wikenros, Camilla; Sand, Håkan; Swenson, Jon; Kindberg, Jonas (Peer reviewed; Journal article, 2020-09-15)Several large carnivore populations are recovering former ranges, and it is important to understand interspecific interactions between overlapping species. In Scandinavia, recent research has reported that brown bear ...