A5051155986- Wildlife Ecology and Conservation
- Marine animal studies overview
- Species Distribution and Climate Change
- Arctic and Antarctic ice dynamics
- Ecology and Vegetation Dynamics Studies
- Ecology and biodiversity studies
- Rangeland and Wildlife Management
- Animal Behavior and Welfare Studies
- Avian ecology and behavior
- Bat Biology and Ecology Studies
- Marine and fisheries research
- Indigenous Studies and Ecology
- Animal Vocal Communication and Behavior
- Climate change and permafrost
- Animal Ecology and Behavior Studies
- Cryospheric studies and observations
- Genetic and phenotypic traits in livestock
- Underwater Acoustics Research
- Animal Behavior and Reproduction
- Environmental DNA in Biodiversity Studies
- Animal Disease Management and Epidemiology
- Fish Ecology and Management Studies
- Forest Management and Policy
- Mercury impact and mitigation studies
- Primate Behavior and Ecology
Aarhus University
2015-2024
Swiss Federal Institute of Aquatic Science and Technology
2020
University of Saskatchewan
2012-2019
Google (United States)
2018
University of Oslo
2010-2011
Wageningen University & Research
2008
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database 803 individuals 57 species, we found that mammals in areas with comparatively high human were average one-half to one-third extent their low footprint. We attribute this reduction behavioral changes individual animals exclusion long-range from higher impact. Global loss...
1. Most studies of intraspecific variation in home range size have investigated only a single or few factors and often at one specific scale. However, considering multiple spatial temporal scales when defining is important as mechanisms that affect may differ depending on the scale under investigation. 2. We aim to quantify relative effect various individual, forage climatic determinants across spatiotemporal large browsing herbivore, moose (Alces alces), living southern limit its...
1. Mechanisms that affect the spatial distribution of animals are typically scale-dependent and may involve forage distribution. Forage quality quantity often inversely correlated a much discussed trade-off is whether or not to select for high-quality at expense abundance. This discussion has rarely involved scale-dependence been applied Northern browsing herbivores. At small scales, browsers assumed best forage. But, as resources scarce become depleted, coarse-scale habitat selection be...
Ungulate populations are important natural resources, associated with both costs and benefits. Conflicts have arisen between stakeholders who benefit from high ungulate numbers those faced the costs. Supplementary or diversionary feeding may potentially mitigate conflicts while maintaining harvest yields but can conservation implications. We quantified empirical evidence for whether intended effects, hence management goals, of met. also examined any potential unintended consequences occur...
Abstract Effective species conservation and management requires information on distribution patterns, which is challenging for highly mobile cryptic that may be subject to multiple anthropogenic stressors across international boundaries. Understanding species–habitat relationships can improve the assessment of trends by explicitly allowing high‐resolution data habitats inform abundance estimation identification protected areas. In this study, we aggregated an unprecedented set survey a...
Abstract Marine ecosystems are increasingly exposed to anthropogenic disturbances that cause animals change behavior and move away from potential foraging grounds. Here we present a process‐based modeling framework for assessing population consequences of such sub‐lethal behavioral effects. It builds directly on how influence animal movements, energetics, is therefore applicable wide range species. To demonstrate the model assess impact wind farm construction noise North Sea harbor porpoise...
Density is a fundamental driver of many ecological processes including habitat selection. Theory on density-dependent selection predicts that animals should be distributed relative to profitability habitat, resulting in reduced specialization (i.e. generalization) as density increases and competition intensifies. Despite mounting empirical support for using isodars describe coarse-grained (interhabitat) animal movements, we know little how affects fine-grained resource within habitats [e.g....
Empirical tests that link temperature-mediated changes in behaviour (activity and resource selection) to individual fitness or condition are currently lacking for endotherms yet may be critical understanding the effect of climate change on population dynamics. Moose (Alces alces) thought suffer from heat stress all seasons so provide a good biological model test whether exposure non-optimal ambient temperatures influence seasonal body mass. Seasonal mass is an important correlate large...
Abstract Unintentional mortality of higher trophic‐level species in commercial fisheries (bycatch) represents a major conservation concern as it may influence the long‐term persistence populations. An increasingly common strategy to mitigate bycatch harbor porpoises ( Phocoena phocoena ), small and protected marine top predator, involves use pingers (acoustic alarms that emit underwater noise) time‐area fishing closures. Although these mitigation measures can reduce porpoise gillnet...
Abstract Classifying movement behaviour of marine predators in relation to anthropogenic activity and environmental conditions is important guide conservation. We studied the relationship between grey seal ( Halichoerus grypus ) variability southwestern Baltic Sea where seal-fishery conflicts are increasing. used multiple covariates proximity active fishing nets within a multivariate hidden Markov model (HMM) quantify changes seals while at sea. Dive depth, dive duration, surface horizontal...
Habitat selection is complex due to density dependence and functional responses, defined as variation in relative habitat use depending on availability. In this study we unite these concepts by empirically testing for density‐dependent responses using a large herbivore, elk Cervus canadensis manitobensis , model species. Theory predicts specialised behaviour when densities are low with gradual switch generalist (more even of habitat) competition intensifies. This suggests that should be...
ABSTRACT Feral wild boar ( Sus scrofa ) are rapidly expanding their distribution and abundance globally causing considerable socio‐economic impacts. Prior to this study, the spatial of feral on Canada prairies was largely unknown. We surveyed all 296 rural municipalities in Saskatchewan, Canada, determine province characterize community leader perceptions risk. Of respondents, over past 3 years 48% never saw boar, them at least occasionally, 3% responded “I don't know,” indicating a few...
Understanding how animals select for habitat and foraging resources therein is a crucial component of basic applied ecology. The selection process typically influenced by variety environmental conditions including the spatial temporal variation in quantity quality food resources, predation or disturbance risks, inter‐ intraspecific competition. Indeed, some most commonly employed ecological theories used to describe choose sites are: nutrient intake maximisation, density‐dependent selection,...
Detailed knowledge on movement behaviour of free‐ranging muskoxen Ovibos moschatus is currently lacking. Quantifying variation in individual and the variables driving such patterns important to understand how they meet their basic requirements inform management. Because exist nutrient‐poor systems with extreme climatic seasonal variability, are expected be largely dependent environmental conditions therein. We analysed high‐resolution location data 14 adult female roaming around Zackenberg...
ABSTRACT The practice of feeding cervids in winter, either as a supplement to enhance nutritional status or divert animals away from roads, railways, vulnerable habitats, is rising noticeably. Moose ( Alces alces ) densities Scandinavia are currently at historically high levels, resulting amplified damage economically important young Scots pine Pinus sylvestris forest stands. Nevertheless, there limited information how diversionary affects herbivore space use and habitat selection. We...
Optimal foraging theory addresses one of the core challenges ecology: predicting distribution and abundance species. Tests hypotheses optimal foraging, however, often focus on a single conceptual model rather than drawing upon collective body theory, precluding generalization. Here we demonstrate links between two established theoretical frameworks animal movements resource use: central‐place density‐dependent habitat selection. Our goal is to better understand how nature critical, centrally...