Search Results - "Ringsby, T. H"

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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Insights into the genetic architecture of morphological traits in two passerine bird species by Silva, C N S, McFarlane, S E, Hagen, I J, Rönnegård, L, Billing, A M, Kvalnes, T, Kemppainen, P, Rønning, B, Ringsby, T H, Sæther, B-E, Qvarnström, A, Ellegren, H, Jensen, H, Husby, A

“…Knowledge about the underlying genetic architecture of phenotypic traits is needed to understand and predict evolutionary dynamics. The number of causal loci,…”
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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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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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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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Factors Affecting Juvenile Survival in House Sparrow Passer domesticus by Ringsby, Thor Harald, Sæther, Bernt-Erik, Solberg, Erling Johan

“…We studied how variation in different reproductive traits (hatching date, clutch number and clutch size) in addition to mass, size and condition of the…”
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Spatial and Temporal Variation in Demography of a House Sparrow Metapopulation by Saether, Bernt-Erik, Ringsby, Thor Harald, Bakke, Oyvind, Solberg, Erling Johan

“…1. In order to compare spatial and temporal variation in the demography of a metapopulation of house sparrows living on four islands off the coast of Northern…”
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Temporal and spatial variation in survival rates of a house sparrow, Passer domesticus, metapopulation by Ringsby, T.H, Saether, B.-E, Altwegg, R, Solberg, J. (Trondheim Univ. (Norway))

“…In a metapopulation of house sparrows, consisting of island populations off the coast of northern Norway, annual variation in adult and juvenile survival rates…”
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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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Phenotypic Correlates and Consequences of Dispersal in a Metapopulation of House Sparrows Passer domesticus by Altwegg, Res, Ringsby, Thor Harald, Saether, Bernt-Erik

“…1. We examine causes and consequences of natal dispersal within a metapopulation of house sparrows Passer domesticus in an archipelago in Northern Norway where…”
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Metals and selenium in wild animals from Norwegian areas close to Russian nickel smelters by KALAS, J. A, RINGSBY, T. H, LIERHAGEN, S

“…This paper reports the concentrations of metals (Al, As, Cd, Cr, Cu, Hg, Ni, Pb, and/or Zn) and selenium (Se) in kidney and/or liver samples from capercaillie…”
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Statistical models of transitive and intransitive dominance structures by TUFTO, JARLE, SOLBERG, ERLING JOHAN, RINGSBY, THOR-HARALD

“…We present an approach based on generalized linear models for analysing dominance data. First, dominance is defined as a parameter characterizing the…”
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Does Male Badge Size Signal Status in Small Island Populations of House Sparrows, Passer domesticus? by Solberg, Erling Johan, Ringsby, Thor Harald

“…The relationship between dominance and throat badge size, body size, and body condition was examined in three small island populations of house sparrows,…”
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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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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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Life History Variation, Population Processes and Priorities in Species Conservation: Towards a Reunion of Research Paradigms by Sæther, Bernt-Erik, Ringsby, Thor Harald, Røskaft, Eivin

“…We argue that a relationship between life history variation and population processes may form the foundation for developing a theory for variation in…”
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An Experimental Test of Optimal Clutch Size of the Fieldfare; With a Discussion on Why Brood Parasites Remove Eggs When They Parasitize a Host Species by Lerkelund, Hans Erik, Moksnes, Arne, Røskaft, Eivin, Ringsby, Thor Harald

“…The aim of the present study was to test the "Incubation limit" hypothesis; this states that the probability of hatching decreases when the number of eggs in a…”
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Fitness consequences of hybridization between house sparrows (Passer domesticus) and tree sparrows (P. montanus) by Solberg, Erling Johan, Jensen, Henrik, Ringsby, Thor Harald, Sæther, Bernt-Erik

“…Gene transfer may occur following hybridization between closely related species if hybrids are viable and able to breed with individuals of one or both of the…”
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