Search Results - "Tufto, J."

The Evolution of Plasticity and Nonplastic Spatial and Temporal Adaptations in the Presence of Imperfect Environmental Cues by Tufto, Jarle

“…A model for the evolution of plasticity is considered in which the phenotype, undergoing stabilizing selection, is modeled as a linear function of an…”
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Spatial variation in senescence rates in a bird metapopulation by Holand, H, T. Kvalnes, M. Gamelon, J. Tufto, H. Jensen, H. Pärn, T. H. Ringsby, B.-E. Sæther

“…Investigating factors which affect the decline in survival with age, i.e. actuarial senescence, is important in order to understand how demographic rates vary…”
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Parasite prevalence increases with temperature in an avian metapopulation in northern Norway by Holand, H, Jensen, H, Kvalnes, T, Tufto, J, Pärn, H, Sæther, B-E, Ringsby, T H

“…Climate and weather conditions may have substantial effects on the ecology of both parasites and hosts in natural populations. The strength and shape of the…”
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Effects of Releasing Maladapted Individuals: A Demographic‐Evolutionary Model by Tufto, Jarle

“…A model of the joint dynamics of change in population sizeNand evolution in a quantitative traitz, as a result of a general form of density dependence, local…”
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Sexual variation in heritability and genetic correlations of morphological traits in house sparrow (Passer domesticus) by Jensen, H., Sæther, B.‐E., Ringsby, T. H., Tufto, J., Griffith, S. C., Ellegren, H.

“…Estimates of genetic components are important for our understanding of how individual characteristics are transferred between generations. We show that the…”
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Lower survival probability of house sparrows severely infected by the gapeworm parasite by Holand, H, Jensen, H, Tufto, J, Soliman, M, Pärn, H, Sæther, B.-E, Ringsby, T. H

“…The effect of parasites in natural populations has received increasing attention in recent years. Studies have shown that parasites may play an important part…”
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Population Dynamical Consequences of Climate Change for a Small Temperate Songbird by B.-E. Sæther, Tufto, J., Engen, S., Jerstad, K., Røstad, O. W., Skåtan, J. E.

“…Predicting the effects of an expected climatic change requires estimates and modeling of stochastic factors as well as density-dependent effects in the…”
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Inferring Patterns of Migration From Gene Frequencies Under Equilibrium Conditions by Tufto, J, Engen, S, Hindar, K

“…A new maximum likelihood method to simultaneously estimate the parameters of any migration pattern from gene frequencies in stochastic equilibrium is…”
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Harvesting strategies for conserving minimum viable populations based on World Conservation Union criteria: brown bears in Norway by Tufto, Jarle, Sæther, Bernt-Erik, Engen, Steinar, Swenson, Jon E., Sandegren, Finn

“…The World Conservation Union (IUCN) defines populations as vulnerable if the probability of extinction is larger than 10/% within the next 100 years. With the…”
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Quantitative genetic models for the balance between migration and stabilizing selection by Tufto, J

“…The evolution of a quantitative trait subject to stabilizing selection and immigration, with the immigrants deviating from the local optimum, is considered…”
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Analysis of genetic structure and dispersal patterns in a population of sea beet by Tufto, J. (Norwegian University of Science and Technology, Trondheim, Norway.), Raybould, A.F, Hindar, K, Engen, S

“…A model of the migration pattern in a metapopulation of sea beet (Beta vulgaris L. ssp. maritima), based on the continuous distributions of seed and pollen…”
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Habitat Use and Ecological Correlates of Home Range Size in a Small Cervid: The Roe Deer by Tufto, Jarle, Andersen, Reidar, Linnell, John

“…1. Summer home range size variation and habitat selection of 35 radio-collared adult female roe deer was studied, using kernel home range estimation and…”
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Age, Size, and Spatiotemporal Variation in Ovulation Patterns of a Seasonal Breeder, the Norwegian Moose (Alces alces) by Garel, Mathieu, Solberg, Erling Johan, Sæther, Bernt‐Erik, Grøtan, Vidar, Tufto, Jarle, Heim, Morten

“…In seasonal environments, timing of reproduction is an important fitness component. However, in ungulates, our understanding of this biological process is…”
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Lifetime Reproductive Success in Relation to Morphology in the House Sparrow Passer domesticus by Jensen, Henrik, Sæther, Bernt-Erik, Ringsby, Thor Harald, Tufto, Jarle, Griffith, Simon C., Ellegren, Hans

“…1. In this study we relate variation in lifetime reproductive success (LRS) of male and female house sparrows Passer domesticus to morphological…”
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Effective size in management and conservation of subdivided populations by Tufto, Jarle, Hindar, Kjetil

“…A numerical method for computing the eigenvalue variance effective size of a subdivided population connected by any fixed pattern of migration is described…”
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A Parametric Model for Estimation of Dispersal Patterns Applied to Five Passerine Spatially Structured Populations by Tufto, Jarle, Ringsby, Thor‐Harald, Dhondt, André A., Adriaensen, Frank, Matthysen, Erik

“…Natal dispersal capture‐recapture data from five fragmented populations of house sparrows, great tits, and blue tits were analyzed using maximum likelihood…”
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Natural selection acts on Atlantic salmon major histocompatibility (MH) variability in the wild by de Eyto, Elvira, McGinnity, Philip, Consuegra, Sofia, Coughlan, Jamie, Tufto, Jarle, Farrell, Killian, Megens, Hendrik-Jan, Jordan, William, Cross, Tom, Stet, René J.M

“…) surviving in a river six months after their introduction as eggs with frequencies expected from parental crosses. We found significant differences between…”
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Dispersal Patterns in a Harvested Willow Ptarmigan Population by Brøseth, Henrik, Tufto, Jarle, Hans Chr. Pedersen, Steen, Harald, Kastdalen, Leif

“…1. Harvest management requires knowledge of whether the harvest is sustainable as a result of compensatory mechanisms, such as dispersal. The effect of…”
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Asynchronous Spatiotemporal Demography of a House Sparrow Metapopulation in a Correlated Environment by Ringsby, Thor Harald, Saether, Bernt-Erik, Tufto, Jarle, Jensen, Henrik, Solberg, Erling Johan

“…One important question in ecology is how large-scale regional phenomena affect the demography and dynamics of local populations. The purpose of the present…”
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Dispersal patterns in a harvested willow ptrarmigan population by Broseth, H, Tufto, J, Pedersen, H.C, Steen, H, Kastdalen, L

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