Blar i Institutt for biologi på tittel
Viser treff 2078-2097 av 2522
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Spatio-Temporal Changes in Wildlife Habitat Quality in the Greater Serengeti Ecosystem
(Peer reviewed; Journal article, 2020)Understanding habitat quality and its dynamics is imperative for maintaining healthy wildlife populations and ecosystems. We mapped and evaluated changes in habitat quality (1975–2015) in the Greater Serengeti Ecosystem ... -
Spatio-temporal dispersal dynamics of a natural house sparrow metapopulation
(Doctoral theses at NTNU;2023:341, Doctoral thesis, 2023)Dispersal plays a critical role in determining eco-evolutionary dynamics by affecting population sizes and causing gene flow, which influence spatial correlations in demography and genetic structure of local populations. ... -
Spatio-temporal variation in moose-vehicle collisions: the effect of varying traffic intensity and light conditions
(Master thesis, 2013)In order to find effective mitigating measures against the large number of moose-vehicle collisions (MVCs) in the Nordic countries, it is important to learn more about the underlying mechanisms causing their spatio-temporal ... -
Spatio-temporal variation in phenotypic selection in a metapopulation of house sparrows (Passer domesticus)
(Master thesis, 2020)Romlig-tidsmessig variasjon i naturlig seleksjon kan ha viktige evolusjonære konsekvenser og innsamling av kunnskap om slik variasjon kan vise seg å være nyttig i bevaringsbiologi. Mange studier har målt romlig eller ... -
Spatiotemporal changes in vegetation following range expansion in Svalbard reindeer (Rangifer tarandus platyrhynchus)
(Master thesis, 2014)Store planteetere som introduseres til nye områder er i stand til å modifisere abundansen og sammensetting av vegetasjonen, spesielt i områder uten predatorer. I dette studiet undersøkte jeg endringer i vegetasjonen i tre ... -
Spatiotemporal dynamics of avian communities
(Doctoral thesis, 2023)Community ecology is the study of how different species interact with each other and their environment in a given habitat. In the face of rapid biodiversity loss, community ecology studies are more important than ever. ... -
Spatiotemporal patterns of plant growth in a warming high Arctic: insights from dendrochronology of Salix polaris
(Master thesis, 2017)Climate change is most pronounced at high latitudes, where plant and animal populations are often strongly regulated by environmental drivers. Theory suggests that if these environmental drivers are synchronized over large ... -
Spatiotemporal patterns of rain-on-snow and basal ice in high Arctic Svalbard: detection of a climate-cryosphere regime shift
(Journal article; Peer reviewed, 2018)Arctic winters have become increasingly warmer and rainier. Where permafrost prevails, winter rain (or rain-on-snow; ROS) is known to occasionally cause extensive ice layers at the snow/ground interface, i.e. "basal ice" ... -
Spatiotemporal Variation and Fitness Consequences of Blood Hemoglobin Concentration in free-living House Sparrow (Passer domesticus) Nestlings
(Master thesis, 2018)Studies have suggested that variation in hemoglobin concentration among individuals can be used as an indicator of individual condition as it reflects the amount of oxygen that is supplied to the tissues. Thus, it is ... -
Spatiotemporal variation and flowering plant preferences of insect pollinators in grassland ecosystems
(Master thesis, 2022)Pollinatorer er viktige i de fleste terrestriske økosystemer og deres nåværende tilbakegang er av stor bekymring. De store, naturlige svingningene til insektpollinatorene mellom år gjør det vanskelig å studere trendene ... -
Spatiotemporal variation in abundance of key tundra species: from local heterogeneity to large-scale synchrony
(Doctoral theses at NTNU;2019:20, Doctoral thesis, 2019)Summary of thesis: From local heterogeneity to large-scale synchrony of wildlife abundance in the high Arctic. The Arctic is a ‘hot-spot’ for climate change, and understanding its impacts on tundra ecosystems will ... -
Spatiotemporal variation in climatic conditions across ecosystems
(Peer reviewed; Journal article, 2021)Environmental variation in time and space affects biological processes such as extinction risk and speed of adaptation to environmental change. The spatial structure of environmental variation may vary among ecosystems, ... -
Spatiotemporal variation in laying date and its impact on reproductive success in house sparrows (Passer domesticus)
(Master thesis, 2018)Timing of breeding is an important determinant of reproductive success for animals living in seasonal environments. Understanding the factors affecting reproductive processes are necessary to predict how populations may ... -
Spatiotemporal variation in resource utilisation by a large herbivore, the moose
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:288, Doctoral thesis, 2011) -
Spatiotemporal variation in the relationship between boreal forest productivity proxies and climate data
(Peer reviewed; Journal article, 2019)The impacts of climate change on high-latitude forest ecosystems are still uncertain. Divergent forest productivity trends have recently been reported both at the local and regional level challenging the projections of ... -
Species data for understanding biodiversity dynamics: The what, where and when of species occurrence data collection
(Peer reviewed; Journal article, 2021)1. The availability and quantity of observational species occurrence records have greatly increased due to technological advancements and the rise of online portals, such as the Global Biodiversity Information Facility ... -
Species delimitation and phylogenetic relationships of the Prionospio complex (Annelida, Spionidae) in the Northeast Atlantic
(Peer reviewed; Journal article, 2024)The Prionospio complex comprises the most diverse and complex group within the polychaete family Spionidae. The phylogenetic relationships within the group are still poorly understood, and the generic breakdown is unstable. ... -
Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae)
(Journal article; Peer reviewed, 2016)The chiefly Holarctic Hydrobius species complex (Coleoptera, Hydrophilidae) currently consists of H. arcticus Kuwert, 1890, and three morphological variants of H. fuscipes (Linnaeus, 1758): var. fuscipes, var. rottenbergii ... -
Species delineation in the speciation grey zone—The case of Diopatra (Annelida, Onuphidae)
(Peer reviewed; Journal article, 2020)Taxonomy based on morphology can be difficult. The challenges arise from different sources such as poor original descriptions, new records based on inadequate knowledge, uncritical application of general assumptions or ... -
Species distributions models may predict accurately future distributions but poorly how distributions change: A critical perspective on model validation
(Journal article; Peer reviewed, 2023)Aim: Species distribution models (SDMs) are widely used to make predictions on how species distributions may change as a response to climatic change. To assess the reli-ability of those predictions, they need to be critically ...