A5037227380- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Animal Behavior and Reproduction
- Animal Ecology and Behavior Studies
- Ecology and Vegetation Dynamics Studies
- Bat Biology and Ecology Studies
- Plant and animal studies
- Genetic diversity and population structure
- Bird parasitology and diseases
- Primate Behavior and Ecology
- Conservation, Biodiversity, and Resource Management
- Telomeres, Telomerase, and Senescence
- Species Distribution and Climate Change
- Polar Research and Ecology
- Physiological and biochemical adaptations
- Geographies of human-animal interactions
- Economic and Environmental Valuation
- Ecosystem dynamics and resilience
- Rangeland and Wildlife Management
- Animal Behavior and Welfare Studies
- Rangeland Management and Livestock Ecology
- Genetic and phenotypic traits in livestock
- Genetic and Environmental Crop Studies
- Wildlife Conservation and Criminology Analyses
- Wildlife-Road Interactions and Conservation
Norwegian University of Science and Technology
2012-2025
Norwegian Biodiversity Information Centre
2014-2023
Inbreeding may increase the extinction risk of small populations. Yet, studies using modern genomic tools to investigate inbreeding depression in nature have been limited single populations, and little is known about dynamics subdivided populations over time. Natural often experience different environmental conditions differ demographic history genetic composition, characteristics that can affect severity depression. We utilized extensive long-term data on more than 3,100 individuals from...
Abstract Understanding the genetic architecture of quantitative traits can provide insights into mechanisms driving phenotypic evolution. Bill morphology is an ecologically important and phenotypically variable trait, which highly heritable closely linked to individual fitness. Thus, bill are suitable candidates for gene mapping analyses. Previous studies have revealed several genes that may influence morphology, but similarity allele effects between species populations unknown. Here, we...
Climate change, human population growth and land use change are among the most important threats to nature ecosystem services. Local appreciation of services knowledge how foundation these is affected by local livelihoods for sustainability natural resources thus may fundamentally affect well-being. In this study, we tested student knowledge, attitudes views towards biodiversity changed due an education programme. We assessed before after attitudes, 180 level-two secondary school students in...
Abstract Telomeres, the nucleotide sequences that protect ends of eukaryotic chromosomes, shorten with each cell division and telomere loss may be influenced by environmental factors. Telomere length (TL) decreases age in several species, but little is known about sources genetic variation change TL (∆TL) wild animals. In this study, we tracked changes throughout natural lifespan (from a few months to almost 9 years) free-living house sparrows ( Passer domesticus ) two different island...
The brood parasitic common cuckoo Cuculus canorus consists of gentes, which typically parasitize only a single host species whose eggs they often mimic. Where multiple gentes co-exist in sympatry, we may expect variable but generally poorer mimicry because switches or inter-gens gene flow via males if these also contribute to egg phenotypes. Here, investigated trait differentiation and three parasitizing great reed warblers Acrocephalus arundinaceus, marsh palustris corn buntings Miliaria...
Ectoparasite load in small mammals can be influenced by both environmental conditions and host species characteristics. However, the nature of these influences is poorly understood many ecosystems. We used zero-inflated negative binomial (ZINB) regression models with a log link function to assess variation ectoparasite among 19 mammal across different land uses (protection park, pastoralism agriculture), habitat types, seasons, age classes, sexes breeding statuses. collected 4258...
Abstract Wetland ecosystems host an extensive number of avian species and play therefore a key role in biodiversity conservation. However, avifauna wetlands is severely impacted by the anthropogenic transformation natural habitats into other land uses. Understanding how habitat changes influence community dynamics crucial for effective management conservation bird habitats. Here, we assessed spatio-temporal variation taxonomic, functional, phylogenetic diversity, assembly structures Indawgyi...
Background Avian brood parasites and their hosts are involved in complex offence-defense coevolutionary arms races. The most common pair of reciprocal adaptations these systems is egg discrimination by mimicry parasites. As improves, more advanced host evolve such as decreased intra- increased interclutch variation appearance to facilitate detection parasitic eggs. increases, able choose matching best own phenotype should be selected, but this requires that know select nests correspondingly....
Body size plays a key role in the ecology and evolution of all organisms. Therefore, quantifying sources morphological (co)variation, dependent independent body size, is importance when trying to understand predict responses selection. We combine structural equation modeling with quantitative genetics analyses study (co)variation meta‐population house sparrows (Passer domesticus). As expected, we found evidence latent variable "body size," causing genetic environmental covariation between...
Conservation crimes are posing serious threats to wildlife species and biodiversity of the Rungwa-Kizigo-Muhesi-Game-Reserves. Devising effective strategies reduce risks as low reasonably possible these crimes, calls for adequate information on factors driving people commit crimes. Data this study were obtained from 315 respondents in 20 villages 316 who arrested committing different conservation Our results suggest that typically young adult males with limited alternative sources income...
Abstract Generation time determines the pace of key demographic and evolutionary processes. Quantified as weighted mean age at reproduction, it can be studied a life‐history trait that varies within among populations may evolve in response to ecological conditions. We combined quantitative genetic analyses with age‐ density‐dependent models study generation variation bird metapopulation. was heritable, males had longer times than females. Individuals greater lifetime reproductive success but...
Abstract Dispersal links eco‐evolutionary dynamics of subpopulations in fragmented landscapes and may play a crucial role the viability populations by increasing individual fitness subpopulation growth rates. However, knowledge immigrants residents their offspring at local metapopulation levels is often lacking due to difficulty quantifying geographically structured wild populations, which requires extensive field efforts. A comprehensive dataset that includes more than 15 years...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 521:237-248 (2015) - DOI: https://doi.org/10.3354/meps11140 GPS-loggers influence behaviour and physiology in black-legged kittiwake Rissa tridactyla Oddvar Heggøy1,2,*, Signe Christensen-Dalsgaard1,3, Peter S. Ranke4, Olivier Chastel5, Claus Bech1 1Department of Biology, Norwegian University Science...
Abstract The effects of spatial structure on metapopulation dynamics depend upon the interaction between local population and dispersal, how this relationship is affected by geographical isolation heterogeneity in habitat characteristics. Our aim to examine emigration immigration house sparrows Passer domesticus a Norwegian archipelagic are key factors predicted classic models affect dispersal—spatial temporal variation size, inter‐island distance, demography This can be divided into two...
Environmental conditions during early-life development can have lasting effects shaping individual heterogeneity in fitness and fitness-related traits. The length of telomeres, the DNA sequences protecting chromosome ends, may be affected by conditions, telomere (TL) has been associated with performance within some wild animal populations. Thus, knowledge mechanisms that generate variation TL, relationship between TL fitness, is important understanding role telomeres ecology life-history...
Dispersal has a crucial role determining ecoevolutionary dynamics through both gene flow and population size regulation. However, to study dispersal its consequences, one must distinguish immigrants from residents. Dispersers can be identified using telemetry, capture-mark-recapture (CMR) methods, or genetic assignment methods. All of these methods have disadvantages, such as high costs substantial field efforts needed for telemetry CMR surveys, adequate distance required in assignment. In...
Carrion represents an unpredictable and widely distributed primary food source for vultures other avian scavengers. Avian scavengers in African savanna ecosystems are reported to rely exclusively on visual stimuli locate carcasses. However, carnivores' predation of large mammalian herbivores subsequent competition access the carcass can result considerable noise, often audible over long distances prolonged periods. Vultures may therefore detect respond these auditory cues, as do carnivores...
In many low-income countries, the conservation of natural resources in protected areas relies on tourism revenue. However, tourist numbers Africa were severely reduced by COVID-19 pandemic, thus, putting these important at risk. We use records from gate passings national parks across Tanzania to demonstrate immediate and severe impact revenues resulting pandemic associated restrictions, whether international local (East African) tourists affected equally. discuss mechanisms that may reduce...
Avian brood parasites depend upon locating host nests to lay their eggs. However, how locate and select the for parasitism remains poorly studied. Here, we examined a non-evicting parasite, Asian koel (
The house sparrow (
Abstract Most large carnivore populations are declining due to anthropogenic activities including direct persecution, prey depletion, habitat loss and degradation. protected areas (PAs) can help maintain viable populations; however, occurring near within PA borders or edges reduce their effectiveness. We investigated the influence of edge effects on abundance lions ( Panthera leo ) spotted hyenas Crocuta crocuta in Maswa Game Reserve (MGR), a part Serengeti ecosystem northern Tanzania....
There is at present considerable variation in the level of antiparasite defences among different host species avian brood parasites, but many potential hosts some individuals reject poorly matching parasite eggs. Here we unique absence egg discrimination behaviour backed up by a lack recognition abilities suitable common cuckoo Cuculus canorus host, skylark Alauda arvensis . Skylarks did not show any clear rejection response to experimentally added highly non‐mimetic foreign eggs behavioural...
Human-carnivore encounters are common where humans and wild carnivores share the same landscape. The frequency of such gives insight regarding carnivore density might correlate with human-carnivore conflict incidences. We interviewed livestock owners in eastern Serengeti ecosystem recorded reported presence relative abundance. simultaneously conducted a survey to assess potential variability that was during surveys. playback surveys attracted 9 lions (Panthera leo), 88 spotted hyenas...