Sökning: "foraging strategies"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden foraging strategies.

  1. 1. Optimal strategies and information in foraging theory

    Detta är en avhandling från Lunds Universitet

    Författare :Emma Sernland; Högskolan i Skövde.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES Biology Other biology; NATURVETENSKAP Biologi Övrig biologi; Naturvetenskap; Natural sciences; Bayesian foraging; information use; public information; prior information; negative binomial distribution; group foraging; decision-making; information updating; leaving strategy; Ecology; Ekologi;

    Sammanfattning : Popular Abstract in Swedish I den här avhandlingen presenterar jag ett antal empiriska och teoretiska arbeten där vi har studerat hur både människor och djur använder information. Vi har funnit att mängden information, och det sätt på vilket informationen presenteras, har betydelse för hur väl människans beslut anpassas till de förhållanden som råder. LÄS MER

  2. 2. On starlings and farming: population decline, foraging strategies, cost of reproduction and breeding success

    Detta är en avhandling från Måns Bruun, Departmen of Ecology, Animal Ecology, The Ecology Building S-223 62 Lund, Sweden

    Författare :Måns Bruun; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; breeding success; foraging strategies; intensification; agricultural methods; population decline; farmland bird; cost of reproduction; Animal ecology; Djurekologi;

    Sammanfattning : The European Starling Sturnus vulgaris as many other farmland bird species has been declining during the last decades. The cause of these declines is generally believed to be changes with in agricultural methods affecting breeding and survival of birds. LÄS MER

  3. 3. Life History Strategies in Linnaea borealis

    Detta är en avhandling från Uppsala : Universitetsbiblioteket

    Författare :Mikael Niva; Uppsala universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Linnaea borealis; apex removal; apical dominance; clonal plant; hand pollination; matrix modelling; plant foraging; resorption efficiency; resorption proficiency; resource heterogeneity; shoot dynamics; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : About 70% of the plant species in the temperate zone are characterised by clonal growth, clonal species are also in majority in the Arctic and Subarctic where they affect the structure and composition of the vegetation. It is therefore of great importance to increase our knowledge about clonal plants and their growth and life histories. LÄS MER

  4. 4. Domestication effects on foraging behaviour consequences for adaptability in chickens

    Detta är en avhandling från Institutionen för fysik, kemi och biologi

    Författare :Christina Lindqvist; Per Jensen; Björn Forkman; [2008]
    Nyckelord :HUMANIORA; HUMANITIES; Etologi; chicken; domestication effects; behaviour; red jungle fowl RJF ; contrafreeloading CFL ; egg production; HUMANITIES and RELIGION History and philosophy subjects Ethnology; HUMANIORA och RELIGIONSVETENSKAP Historisk-filosofiska ämnen Etnologi;

    Sammanfattning : The main aim of this thesis was to study domestication effects on foraging behaviour in chickens and to investigate whether and how domestication and selection for high production have influenced adaptability in chickens. Two domestic strains of chickens (egg layers and meat type chickens) and their wild ancestor, the red jungle fowl (RJF) were compared in different test situations with respect to foraging behaviour and adaptability. LÄS MER

  5. 5. Comparative studies of cognitive abilities in the Paridae : Evidence from laboratory studies

    Detta är en avhandling från Lund University, Faculty of Science, Department of Biology

    Författare :Utku Urhan; [2017-09]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Comparative cognition; Spatial memory; Food hoarding; Observational spatial memory; motor self-regulation; Cognitive sex differences; foraging strategies;

    Sammanfattning : The Paridae (tits, titmice and chickadees) is a bird family consisting of both food hoarding and non-hoarding species. Many studies have been conducted on birds that are considered to be cognitively advanced, such as parrots and corvids, whereas much less is known about these small passerines. LÄS MER