Search for dissertations about: "invertebrates"

Showing result 16 - 20 of 111 swedish dissertations containing the word invertebrates.

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

   Author : Pär Gustafsson; Eva Bergman; Larry Greenberg; John Armstrong; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Brown trout; diet; growth; riparian zone; forest-stream linkages; terrestrial invertebrates; light; primary production; Biology; Biologi; Biology; Biologi;

   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

4. 17. Shell Age Economics : Marine Gathering in the Kingdom of Tonga, Polynesia

   Author : Thomas Malm; Humanekologi; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; chieftainship; cosmology; demography; marine tenure systems; tragedy of the commons ; seaweeds; marine invertebrates; gender roles; indigenous knowledge; maritime anthropology; Tongans; Tonga; Oceania; Polynesia; totemism; Cultural anthropology; ethnology; Kulturantropologi; etnologi;

   Abstract : This monograph analyses marine gathering in the Polynesian Kingdom of Tonga from ecological, social and cognitive perspectives. The overarching issues explored are (1) the significance of marine gathering in the past and present, (2) how seaweeds and marine invertebrates have been perceived, classified, named and used, (3) how they have been implicated in social relations, and (4) how the integration of the islands into the modern world system has affected the marine environment and the exploitation of its resources. READ MORE

5. 18. Fine stream wood : effects on drift and brown trout (Salmo trutta) growth and behaviour

   Author : Åsa Enefalk; Eva Bergman; Anders Nilsson; Stanley Gregory; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; stream fish; wood; salmonid; trout; aquatic invertebrates; behaviour; sheltering; Biology; Biologi;

   Abstract : Stream ecosystems and their riparian zones have previously been regarded as two different ecosystems, linked through numerous reciprocal subsidies. Today, ecologists agree that the stream and the riparian zone should be regarded as one system, the stream-riparian ecosystem, which is characterised largely by the subsidies between land and water. READ MORE

6. 19. Radionuclides in the Baltic Sea : Ecosystem models and experiments on transport and fate

   Author : Linda Kumblad; Nils Kautsky; Ulrik Kautsky; Michael Gilek; Michael Thorne; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; radionuclide; baltic sea; ecosystem model; ecosystem dynamics; risk assessment; safety assessment; benthic invertebrates; bioturbation; bioaccumulation; remobilisation; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

   Abstract : Manmade radionuclides have been introduced to the environment for almost a century. The main source has been the nuclear weapons testing programmes, but accidental releases from the nuclear power production industries have also contributed. The risk to humans from potential releases from nuclear facilities is evaluated in safety assessments. READ MORE

7. 20. Responses of Baltic soft-bottom invertebrates to settled organic material

   Author : Helene Modig; Kevin R. Carman; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal Ecology; zooekologi;

   Abstract : .... READ MORE