A5049910689- Wildlife Ecology and Conservation
- Animal Behavior and Welfare Studies
- Rangeland Management and Livestock Ecology
- Genetic and phenotypic traits in livestock
- Bat Biology and Ecology Studies
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Ecology and biodiversity studies
- Avian ecology and behavior
- Animal Behavior and Reproduction
- Rangeland and Wildlife Management
- Genetic diversity and population structure
- Ecology and Vegetation Dynamics Studies
- Indigenous Studies and Ecology
- Viral Infections and Vectors
- Marine animal studies overview
- Bird parasitology and diseases
- Zoonotic diseases and public health
- Toxoplasma gondii Research Studies
- Human-Animal Interaction Studies
- Rabies epidemiology and control
- Wildlife-Road Interactions and Conservation
- Yersinia bacterium, plague, ectoparasites research
- Genetic Mapping and Diversity in Plants and Animals
- Genomics and Phylogenetic Studies
Environment and Climate Change Canada
2007-2024
Leopardstown Park Hospital
2023-2024
North Seattle College
2015-2023
Swedish University of Agricultural Sciences
2008-2021
University of Saskatchewan
1998-2011
Stockholm University
2010
University of Alberta
2009
McGill University
2009
Memorial University of Newfoundland
2009
Agriculture and Agri-Food Canada
2009
Abstract Reliable assessments of animal abundance are key for successful conservation endangered species. For elusive animals with individually-unique markings, camera-trap surveys a benchmark standard estimating local and global population abundance. Central to the reliability resulting estimates is assumption that individuals accurately identified from photographic captures. To quantify risk individual misidentification its impact on we performed an experiment under controlled conditions...
Reports of fading vole and lemming population cycles persisting low populations in some parts the Arctic have raised concerns about spread these fundamental changes to tundra food web dynamics. By compiling 24 unique time series fluctuations across circumpolar region, we show that virtually all displayed alternating periods cyclic/non-cyclic over past four decades. Cyclic patterns were detected 55% ( n = 649 years pooled sites) with a median periodicity 3.7 years, non-cyclic not more...
The circumpolar arctic fox Alopex lagopus thrives in cold climates and has a high migration rate involving long-distance movements. Thus, it differs from many temperate taxa that were subjected to cyclical restriction glacial refugia during the Ice Ages. We investigated population history genetic structure through mitochondrial control region variation 191 foxes throughout arctic. Several haplotypes had Holarctic distribution no phylogeographical was found. Furthermore, there difference...
Home range size is a fundamental concept for understanding animal dispersion and ecological needs, it one of the most commonly reported attributes free-ranging mammals. Previous studies indicate that red foxes Vulpes vulpes display great variability in home size. Yet, there has been little consensus regarding reasons why sizes vary so extensively. In this study, we examine possible causes variation fox using data from 52 GPS collared four study areas representing gradient landscape...
Understanding how landscapes affect animal movements is key to effective conservation and management (Rudnick et al., 2012; Zeller 2012). Movement defines home ranges, where animals generally access resources such as food mates, also their dispersal exploratory forays. These are important for individual survival fitness through genetic exchange within between populations colonization of unoccupied habitats (Baguette 2013; MacArthur & Wilson, 1967). Dispersal typically occur when young leave...
Abstract Dispersal patterns are male biased in most mammals whereas the less clear within genus L ynx (four species), with findings ranging from dispersal to males and females dispersing equally far equal frequency. In this study, we examined various aspects of natal by E urasian lynx S candinavia comparing 120 radio‐marked two study areas weden ( arek B ergslagen) N orway H edmark A kershus). We found that dispersed farther than female mean distances 148 47 km for were followed age 18...
Dispersal is a fundamental process that facilitates population and range expansion by providing mechanism for colonization metapopulation linkages. Yet quantifying the dispersal process, particularly long-distance events, has been inherently difficult due to technological observational limitations. Additionally, distance calculated as straight-line between initiation settlement fails account actual movement path of animal during dispersal. Here, we highlight six representing some longest...
1 Many ecosystems are characterized by pulses of dramatically higher than normal levels foods (pulsed resources) to which animals often respond caching for future use. However, the extent use cached and how this varies in relation fluctuations other is poorly understood most animals. 2 Arctic foxes Alopex lagopus (L.) cache thousands eggs annually at large goose colonies where superabundant during nesting period geese. We estimated contribution arctic fox diets spring autumn, when geese were...
Abstract Territory size is often larger for males than females in species without biparental care. For large solitary carnivores, this explained by encompassing a set of female territories to monopolize their reproduction during mating (area maximization). However, are expected behave more like outside breeding, with area utilization being dependent on the range required secure food resources minimization). To examine how male and carnivores adjust spatial organization year as key (mates...
The biodiversity working group of the Arctic Council has developed pan-Arctic monitoring plans to improve our ability detect, understand and report on long-term change in biodiversity. fox (Vulpes lagopus) was identified as a target future because its circumpolar distribution, ecological importance reliance ecosystems. We provide first exhaustive survey contemporary programmes, describing 34 projects located eight countries. Monitored populations covered equally four climate zones species’...
Abstract Large protected areas are often considered to be as important population size in reducing extinction risk for large carnivores. However, the effectiveness of carnivore survival has rarely been tested where surrounding also provide suitable habitats. Using individual‐based long‐term data, we here show that three species carnivores all suffered higher illegal killing inside national parks than unprotected northern Sweden. We suggest this is result low enforcement and public presence...
The parasites of arctic foxes in the central Canadian Arctic have not been well described. Canada's is undergoing dramatic environmental change, which predicted to cause shifts parasite and wildlife species distributions, trophic interactions, requiring that baselines be established monitor future alterations. This study used conventional, immunological, molecular fecal analysis techniques survey current gastrointestinal endoparasite fauna currently present Nunavut, Canada. Ninety-five fox...
Context Livestock depredation is a major conservation challenge around the world, causing considerable economical losses to pastoral communities and often result in retaliatory killing. In Mongolia, livestock rates are thought be increasing due changes practices transformation of wild habitats into pasture lands. Few studies have examined interactions between humans carnivores even fewer considered how recent may affect rates. Aim This study aimed assess influence herding on self-reported...
Although the protozoan parasite Toxoplasma gondii is ubiquitous in birds and mammals worldwide, full suite of hosts transmission routes not completely understood, especially Arctic. occurrence humans wildlife can be high Arctic regions, despite apparently limited opportunities for oocysts shed by felid definitive hosts. foxes (Vulpes lagopus) are under increasing anthropogenic ecologic pressure, leading to population declines parts their range. Our understanding T. arctic only a few but...
Northern Canada is warming at 3 times the global rate. Thus, changing diversity and distribution of vectors pathogens an increasing health concern. California serogroup (CSG) viruses are mosquitoborne arboviruses; wildlife reservoirs in northern ecosystems have not been identified. We detected CSG virus antibodies 63% (95% CI 58%-67%) caribou (n = 517), 4% 2%-7%) Arctic foxes 297), 12% 6%-21%) red 77), 28% 24%-33%) polar bears 377). Sex, age, summer temperatures were positively associated...
Abstract Livestock depredation by large carnivores is a global conservation challenge, and mitigation measures to reduce livestock losses are crucial for the coexistence of people. Various employed but their effectiveness has rarely been tested. In this study, we tested tall fences snow leopards Panthera uncia wolves Canis lupus at night-time corrals winter camps herders in Tost Mountains southern Mongolia. Self-reported fenced were reduced from mean loss 3.9 goats sheep per family prior...
Arctic foxes (Alopex lagopus) are the main predators of many arctic-nesting birds, and such predation can have a large impact on nesting performance geese in some years parts Arctic. We examined foraging patterns arctic at lesser snow goose (Chen caerulescens caerulescens) colony Banks Island, Canada, from 1996 to 1998 were especially interested proportion food that was cached for later use fox had productivity. took mostly eggs when among geese, most these (97%) use. Adult lemmings taken...
Detailed knowledge of the variation in demographic rates is central for our ability to understand evolution life history strategies and population dynamics, plan conservation endangered species. We studied reproductive output 61 radio-collared Eurasian lynx females four Scandinavian study sites spanning a total 223 lynx-years. Specifically, we examined how breeding proportion litter size varied among areas age classes (2-year-old vs. >2-year-old females). In general, between sites, whereas...
Risk of predation is an evolutionary force that affects behaviors virtually all animals. In this study, we examined how habitat selection by roe deer was affected risk Eurasian lynx – the main predator in Scandinavia. Specifically, compared varied (1) before and after re-established study area (2) relation to habitat-specific lynx. All analyses were conducted at spatial temporal scales home ranges seasons. We did not find any evidence avoided habitats which greatest information-theoretic...
Abstract The big cats (genus Panthera) represent some of the most popular and charismatic species on planet. Although reference genomes are available for this clade, few at chromosome level, inhibiting high-resolution genomic studies. We assembled from 3 members genus, tiger (Panthera tigris), snow leopard uncia), African pardus pardus), or near-chromosome level. used a combination short- long-read technologies, as well proximity ligation data Hi-C technology, to achieve high continuity...