Search for dissertations about: "food web interactions"

Showing result 1 - 5 of 44 swedish dissertations containing the words food web interactions.

  1. 1. Food Web Ecology -- individual life-histories and ecological processes shape complex communities

    University dissertation from Department of Biology, Lund University

    Author : Martin Hartvig; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; food web; community ecology; community assembly; size-structure; life-history omnivory; ontogeny; trophic interactions; trait based model; topology; emergent organisation; size-spectrum;

    Abstract : This thesis sets out a food web framework for size-structured populations. The framework enables an ecological approach to food web modelling as the individual life-history from birth, through maturation, and ultimately death is explicitly resolved with the use of bioenergetics based on individual body size. READ MORE

  2. 2. Cascading extinctions in food webs : local and regional processes

    University dissertation from Linköping : Linköpings universitet

    Author : Anna Eklöf; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cascading extinctions; complexity; connectance; dispersal; food web; local dynamics; regional dynamics; resistance; spatial structure; species loss;

    Abstract : Ecological communities all over the world are loosing biodiversity due to different kinds of human activities and there is an urgent need of understanding how those losses affect the function of the ecosystems on which we all depend. The community's response to species losses is likely to depend on both the structure of the local community as well as its interactions with surrounding communities. READ MORE

  3. 3. Species extinctions in food webs local and regional processes

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Anna Eklöf; Bo Ebenman; Peter Münger; Marcel Holyoak; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Extinction; food web; metacommunity; dispersal; species loss; migration; habitat fragmentation; connectance; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : Loss of biodiversity is one of the most severe threats to the ecosystems of the world. The major causes behind the high population and species extinction rates are anthropogenic activities such as overharvesting of natural populations, pollution, climate change and destruction and fragmentation of natural habitats. READ MORE

  4. 4. Trophic interactions and behaviour Studies relevant to a Baltic Sea biomanipulation

    University dissertation from Stockholm : Department of Systems Ecology, Stockholm University

    Author : Per B. Holliland; Sture Hansson; Elena Gorokhova; Peter Tiselius; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; zooplankton; non-indigenous species; selectivity; food web; rearing environment; fish stocking; Sander lucioperca; diel vertical migration; ontogeny; ovigerous; marin ekologi; Marine Ecology;

    Abstract : The main theme of this thesis is the interactions of animals with the environment and each other. The thesis was written within the framework of a biomanipulation project “Pikeperch in Himmerfjärden”. READ MORE

  5. 5. Species Responses to Environmental Fluctuations impacts of food web interactions and noise color

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Sara Gudmundson; Uno Wennergren; Anna Eklöf; Sebastian Diehl; [2017]

    Abstract : Species constantly experience changes in their environmental conditions owing to natural or human induces reasons. Understanding how species respond to these fluctuations are important for ecology, especially given the ongoing climate change. Empirical studies have shown that species respond differently to the same disturbance. READ MORE