Sökning: "arthropods"
Visar resultat 11 - 15 av 37 avhandlingar innehållade ordet arthropods.
11. Evolution and Development of the Onychophoran Head and Nervous System
Sammanfattning : Onychophorans are closely allied to the arthropods and possess a body organisation more similar to Middle Cambrian fossils than to recent arthropods. This means that onychophorans in some respects can be regarded as a model for the last common ancestor to both the Arthropoda and the Onychophora. LÄS MER
12. Management of urban woodlands - effects on bird communities and recreational values
Sammanfattning : The ongoing urbanisation increases the pressure on urban nature. Urban woodlands are receiving growing attention as they provide valuable ecosystem services to urban citizens, mainly by providing areas for recreation but also through improving air quality and reducing noise. LÄS MER
13. The Spider and the Sea : Effects of marine subsidies on the role of spiders in terrestrial food webs
Sammanfattning : The purpose of this study was to identify if terrestrial arthropod predators on Baltic Sea shores vary in their use of marine versus terrestrial food items, and to construct a bottom-up food web for Baltic Sea shores. The inflow of marine nutrients in the area consists mainly of marine algal detritus and emerging aquatic insects (e.g. LÄS MER
14. Baltic shore-lands facing climate change
Sammanfattning : This thesis provides new insight concerning drivers behind differences in arthropod diversity and abundance in Baltic shore ecosystems and how the arthropod communities might be affected when the conditions in the Baltic Sea are altered due to climate change. The focus has been on climate related changes that are unique for coastal ecosystems, especially sea level rise and changes in the inflow of marine nutrients. LÄS MER
15. Genome Evolution and Niche Differentiation of Bacterial Endosymbionts
Sammanfattning : Most animals contain chronic microbial infections that inflict no harm on their hosts. Recently, the gut microflora of humans and other animals have been characterized. However, little is known about the forces that shape the diversity of these bacterial communities. LÄS MER