Search for dissertations about: "benthic flux"

Showing result 11 - 15 of 17 swedish dissertations containing the words benthic flux.

  1. 11. Fate of contaminants in Baltic Sea sediment ecosystems : the role of bioturbation

    University dissertation from Stockholm : Systemekologiska institutionen

    Author : Jenny E Hedman; Stockholms universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Toxicology; Toxikologi; Marine Ecotoxicology; marin ekotoxikologi;

    Abstract : Aquatic sediments are of major importance for the cycling of environmental pollutants, acting as both sinks and secondary sources of contaminants to the ecosystem. Sediment-living organisms can affect the fate and transport of contaminants through activities like feeding and burrowing, collectively called bioturbation. READ MORE

  2. 12. Forest-stream linkages Experimental studies of foraging and growth of brown trout (Salmo trutta L)

    University dissertation from Fakulteten för samhälls- och livsvetenskaper

    Author : Pär Gustafsson; Karlstads universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Biology; Biologi; Brown trout; diet; growth; riparian zone; forest-stream linkages; terrestrial invertebrates; light; primary production; functional response; foraging;

    Abstract : Riparian vegetation along streams and rivers affects the aquatic community in numerous ways and often operates as a link for energy flux between forest and streams. The studies presented in this licentiate thesis focus on light and terrestrial invertebrates, two factors influenced by riparian zone structure, which potentially affect stream ecosystems and thus also brown trout (Salmo trutta). READ MORE

  3. 13. Ecological and physiological aspects of contaminant accumulation and transport by the filter-feeding mussel, Mytilus edulis

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

    Author : Mikael Björk; Stockholms universitet.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Marine Ecotoxicology; marin ekotoxikologi;

    Abstract : This thesis examines the influence of food availability on the bioaccumulation kinetics and the transport of hydrophobic organic contaminants (HOCs) by the Baltic Sea blue mussel, Mytilus edulis. In laboratory studies, food availability was found to significantly modify the rate of physiological processes involved in filter-feeding. READ MORE

  4. 14. Magnetic properties of magnetosomal greigite and factors influencing its occurrence and preservation in Baltic Sea Littorina sediments

    University dissertation from Department of Geology, Lund University

    Author : Maja Reinholdsson; Lunds universitet.; Lund University.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Baltic Sea; deep basins; mineral magnetic properties; magnetotactic bacteria; magnetosomal greigite; laminated sapropels; organic carbon; geochemistry.;

    Abstract : Popular Abstract in Swedish Östersjön är idag ett av världens största innanhav med endast marginellt utbyte av vatten med Kattegatt via Öresund samt Lilla och Stora Bält. Saltrika inflöden från Kattegatt orsakar två salthaltsgradienter, en horisontell med mer saltrikt vatten i sydväst och mer färskt i Bottenhavet, samt en vertikal saltgradient (haloklin) med mer saltrikt bottenvatten och mer färskt ytvatten. READ MORE

  5. 15. The Invasion of the Zebra Mussel - Effects on Phytoplankton Community Structure and Ecosystem Function

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Rahmat Naddafi; Uppsala universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Invasive species; Zebra mussel; Invasion success; Selective feeding; Non-lethal effects of predator; Seston stoichiometry; Delayed fluorescence excitation spectroscopy; Phytoplankton dynamics; Trait-mediated indirect interaction; Ecosystem function;

    Abstract : Biological invasion has become a major threat to economy, ecology, global biodiversity and ecosystem function of aquatic ecosystems. The main aim of the thesis was to study the effects of the zebra mussel (Dreissena polymorpha), a versatile invasive species, on phytoplankton dynamics and ecosystem function of lakes. READ MORE