Browsing NTNU Open by Author "Eriksen, Lasse Frost"
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Climatic forcing and individual heterogeneity in a resident mountain bird: legacy data reveal effects on reproductive strategies
Eriksen, Lasse Frost; Ringsby, Thor Harald; Pedersen, Hans Christian; Nilsen, Erlend Birkeland (Peer reviewed; Journal article, 2023)Optimization of clutch size and timing of reproduction have substantial effects on lifetime reproductive success in vertebrates, and both individual quality and environmental variation may impact life history strategies. ... -
Drivers and consequences of partial migration in an alpine bird species
Arnekleiv, Øyvind Lorvik; Eldegard, Katrine; Moa, Pål Fossland; Eriksen, Lasse Frost; Nilsen, Erlend Birkeland (Peer reviewed; Journal article, 2022)1. Partial migration, where a portion of the population migrates between win-ter and summer (breeding) areas and the rest remain year- round resident, is a common phenomenon across several taxonomic groups. Several hypotheses ... -
Life history traits and demography of a mountain bird under climatic variation
Eriksen, Lasse Frost (Doctoral theses at NTNU;2024:90, Doctoral thesis, 2024)Ongoing climate change can be expected to have major consequences for many species and ecosystems. Effects have been reported on reproduction, survival and movement ecology, with potential impacts for population dynamics ... -
Optimal spatiotemporal harvest strategies for willow ptarmigan (Lagopus lagopus) in central Norway
Eichholz, Emanuel (Master thesis, 2020)The evolutionary mechanisms and environmental factors that underlie variation in movement behaviors have remained a major challenge in population ecology. This constitutes substantial issues for wildlife managers, as the ... -
Survival and cause-specific mortality of harvested willow ptarmigan (Lagopus lagopus) in central Norway
Israelsen, Markus Fjellstad; Eriksen, Lasse Frost; Moa, Pål Fossland; Hagen, Bjørn-Roar; Nilsen, Erlend Birkeland (Journal article; Peer reviewed, 2020)Survival is a key demographic component that often varies as a result of human activities such as recreational harvest. Detailed understanding of seasonal variation in mortality patterns and the role of various risk factors ...