Sökning: "Andrena"
Hittade 4 avhandlingar innehållade ordet Andrena.
1. To Bee or Not to Be : Critical Floral Resources of Wild-Bees
Sammanfattning : In recent decades, the development of strategies to prevent or slow the loss of biodiversity has become an important task for ecologists. In most terrestrial ecosystems wild-bees play a key role as pollinators of herbs, shrubs and trees. The scope of this thesis was to study 1) pollinator effectiveness of specialist bees vs. LÄS MER
2. Chemical signals and odour-released behaviour in Andrena bees (Hymenoptera, Andrenidae)
Sammanfattning : .... LÄS MER
3. Mating structure and nestmate relatedness in primitively social hymenoptera as revealed by microsatellites
Sammanfattning : Mating structure and nestmate relatedness have been estimated in social Hymenoptera with different levels of sociality. Microsatellite markers have been developed for both communal bees (Andrena scottica) and for primetively eusocial wasps (Vespula rufa). LÄS MER
4. Insect Diversity in Changing Landscapes
Sammanfattning : During recent decades, concern about the loss of biodiversity has increased. To change this negative trend there is an urgent need for effective conservation measures and there are ample evidence that conservation of organisms without an understanding of their ecology and behaviour is impossible. LÄS MER
