Browsing NTNU Open by Author "Wright, Jonathan"
Now showing items 41-51 of 51
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Provisioning tactics of great tits (Parus major) in response to long-term brood size manipulations differ across years
Mathot, Kimberley J; Olsen, Anne-Lise; Mutzel, Ariane; Araya-Ajoy, Yimen; Nicolaus, Marion; Westneat, David F.; Wright, Jonathan; Kempenaers, Bart; Dingemanse, Niels J. (Journal article; Peer reviewed, 2017)Parents provisioning their offspring can adopt different tactics to meet increases in offspring demand. In this study, we experimentally manipulated brood demand in free living great tits (Parus major) via brood size ... -
Recovery, body mass and buoyancy: a detailed analysis of foraging dive cycles in the European shag
Carlsen, Astrid A.; Lorentsen, Svein-Håkon; Wright, Jonathan (Peer reviewed; Journal article, 2021)Foraging dives in birds and mammals involve complex physiological and behavioural adaptations to cope with the breaks in normal respiration. Optimal dive strategies should maximize the proportion of time spent under water ... -
Safe, selfish state-independent mobbing behaviour in the cooperatively breeding apostlebird (Struthidea cinerea)
Berne, Erlend (Master thesis, 2011)In the last few decades stochastic dynamic modeling (SDM) has been used to explore adaptive state-dependent strategies in a whole host of different theoretical problems in behavioural ecology, with considerable success. ... -
Selection on high thermal tolerance alters tolerance to cold
Hildrum, Hanne Margrethe (Master thesis, 2019)Klimaendringer vil føre til økning i vanntemperaturer og intensitet av hetebølger. Dette vil utfordre ektoderme fiskers indre fysiologi og populasjonsutbredelse, delvis avhengig av deres temperatur-toleranse. Et vanlig mål ... -
Short‐term insurance versus long‐term bet‐hedging strategies as adaptations to variable environments
Haaland, Thomas; Wright, Jonathan; Tufto, Jarle; Ratikainen, Irja Ida (Journal article; Peer reviewed, 2018)Understanding how organisms adapt to environmental variation is a key challenge of biology. Central to this are bet‐hedging strategies that maximize geometric mean fitness across generations, either by being conservative ... -
Spatial and Temporal Variation in Moose- (Alces alces) Road Crossings
Fliflet, Henrik Rasmussen (Master thesis, 2012)This study examined what separates a crossing site from an available crossing site and investigate when and where roads are more likely to be crossed by moose (Alces alces). Five seasonal models for two sexes were selected ... -
Spatial structure and dispersal dynamics in a house sparrow metapopulation
Ranke, Peter Sjolte; Araya-Ajoy, Yimen; Ringsby, Thor Harald; Pärn, Henrik; Rønning, Bernt; Jensen, Henrik; Wright, Jonathan; Sæther, Bernt-Erik (Peer reviewed; Journal article, 2021)The effects of spatial structure on metapopulation dynamics depend upon the interaction between local population dynamics and dispersal, and how this relationship is affected by the geographical isolation and spatial ... -
Tests of the Marginal Value Theorem in diving bouts of foraging trips in pairs of breeding European shag (Phalacrocorax aristotelis)
Carlsen,Astrid Anette; Wright, Jonathan; Lorentsen, Svein-Håkon; Bech, Claus; Moe, Børge (Master thesis, 2019)I denne avhandlingen ble tilpasninger av Marginal Value Theorem testet ved bruk av data fra 46.103 dykk av 39 par toppskarv (Phalacrocorax aristotelis) innsamlet over 6 år, med hensyn til fuglers respiratorisk fysiologi ... -
The biology hidden inside residual within-individual phenotypic variation
Westneat, David; Wright, Jonathan; Dingemanse, Niels J. (Journal article; Peer reviewed, 2015)Phenotypes vary hierarchically among taxa and populations, among genotypes within populations, among individuals within genotypes, and also within individuals for repeatedly expressed, labile phenotypic traits. This hierarchy ... -
The Role of Indirect Genetic Effects in Evolutionary Rescue
O'Shea, Myranda (Master thesis, 2020)Globale miljøendringer fører til en kraftig nedgang i biodiversitet og de tilhørende økosystemtjenestene. Det å forstå mekanismene som påvirker en populasjons evne til å tilpasse seg disse miljøendringene er kritisk kunnskap ... -
Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation
Araya-Ajoy, Yimen; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Pepke, Michael Le; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Wright, Jonathan (Journal article; Peer reviewed, 2021)Generation time determines the pace of key demographic and evolutionary processes. Quantified as the weighted mean age at reproduction, it can be studied as a life-history trait that varies within and among populations and ...