Search for dissertations about: "prey"

Showing result 1 - 5 of 174 swedish dissertations containing the word prey.

  1. 1. Platinum Group Elements in Birds of Prey

    Author : Kristine H. Ek; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rhodium; bird of prey; platinum; laser ablation; palladium; ICP-MS; airborne particles;

    Abstract : The environmental concentrations of Pd, Pt and Rh (three of the platinum group elements, PGE) have increased since the introduction of exhaust catalysts on automobiles. A limited understanding of the environmental distribution and effects of the platinum group elements has raised concern over their potential biological availability. READ MORE

  2. 2. Attacking predators and fleeing prey : detection, escape and targeting behaviour in birds

    University dissertation from Stockholm : Zoologiska institutionen

    Author : Ulrika Kaby; Stockholms universitet.; [2005]
    Keywords : zoology; ethology; birds; animal behaviour;

    Abstract : The aim of this thesis is to further our understanding of predator and prey behaviour and decision making in different attack situations. The thesis deals with escape strategies, predator detection ability and prey targeting behaviour. READ MORE

  3. 3. Psychotropic Pharmaceuticals in Aquatic Systems: An Ecological Perspective

    University dissertation from Department of Biology, Lund University

    Author : Melanie Hedgespeth; Lunds universitet.; Lund University.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ecotoxicology; aquatic; trophic level; pharmaceutical; SSRI; beta-blocker; sertraline; fluoxetine; propranolol; fish; daphnia; snail; predator; prey; behavior; life history; multiple stressor;

    Abstract : Popular Abstract in English Psychotropic pharmaceuticals include various groups of chemicals that have been designed to affect neurochemistry in human consumers resulting in changes in cognition, mood, and/or behavior; many target specific receptors and subsequently alter neurotransmitter levels in the central nervous system. The use of pharmaceuticals by consumers results in the release of these active substances and their breakdown products into the environment, the main source of which is through domestic wastewater treatment plants connected to households. READ MORE

  4. 4. Multiple stressors in rotifer communities: : Effects of predation, climate change, and brownification

    University dissertation from Lund University, Faculty of Science, Department of Biology

    Author : Huan Zhang; Lunds universitet.; Lund University.; [2017-10]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Climate change; community dynamic; brownification; heat wave; inducible defense; rotifer; plasticity; multiple stressors; Predation; prey;

    Abstract : De flesta vattenlevande organismer på Jorden lever i en miljö där de samtidigt måste hantera flera olika hot och stressituationer, såsom t.ex. predation, klimatförändringar och brunifiering. READ MORE

  5. 5. Predator-prey systems and applications

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Torsten Lindström; [1991]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik; Matematik; Mathematics;

    Abstract : .... READ MORE