Search for dissertations about: "arthropods"

Showing result 6 - 10 of 37 swedish dissertations containing the word arthropods.

  2. 6. Community and food web assembly on virgin habitat islands - The nunatak saga

    Author : Maria Ingimarsdottir; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; allochthonous material; arthropods; community assembly; corridor; dispersal; Iceland; metacommunity; nunataks; primary succession; stable isotopes.;

    Abstract : The classical view of primary community assembly is that colonisation by plants is essential before invertebrates can establish. It has been recognised, however, that invertebrates can establish before plants, and that they may be important in the first steps of community assembly. READ MORE

  4. 7. Biodiversity & Biofuel. Harvest of Logging Residue Affects Arthropods

    Author : Karolina Nittérus; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biodiversity; beetles; biofuel; Carabidae; Cerambycidae; Celeoptera; forestry; habitat; structure; logging residue; Lycosidae; microhabitat choice; slash; species compositin; species richness; spiders; structural comlexity; whole-tree harvest;

    Abstract : .... READ MORE

  5. 8. Natural enemies: Functional aspects of local management in agricultural landscapes

    Author : Helena Hanson; Biodiversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Agricultural intensification; sustainable agriculture; land use; management intensity; landscape scale; ecosystem services; biological control; species trait; pesticides; predatory arthropods; parasitoids; pollen beetles;

    Abstract : Agricultural intensification has raised the global food production but also caused major concerns about environmental and health effects, including contamination by pesticides. Pesticide applications may induce toxicity not only on the target pest species but especially on non-target species. READ MORE

  6. 9. Rickettsia helvetica; Detection in arthropods and human tissues and its relation to clinical disease

    Author : Kenneth Nilsson; Björn Olsen; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Communicable diseases; rickettsia; spotted fever; tick; PCR; myocarditis; sarcoidois; Infektionssjukdomar; Infectious diseases; Infektionssjukdomar; Infektionssjukdomar; Infectious Diseases;

    Abstract : A relation between R. helvetica and perimyocarditis was, in two young men who died of sudden cardiac death during exercise in 1997, suggested by a seminested PCR, for three different genes, sequencing of the amplified products, documentation of a seroresponse and histopathologic changes in accordance with rickettsioses. READ MORE

  7. 10. Local and landscape-level impacts of agricultural intensification on arthropod communities and their interaction networks

    Author : Guillermo Aguilera Nuñez; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Arthropods play a central role in agricultural landscapes being responsible for the delivery of many ecosystem services such as pollination, biological pest control, and nutrient cycling. But the current global decline of arthropods is intensified by habitat modification, loss and fragmentation, pesticide use and other intensive management practices. READ MORE