Sökning: "bumblebees"
Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet bumblebees.
1. Ecology of bumblebees (Hymenoptera, Apidae) in a subalpine/alpine area with special reference to food plant and habitat utilization
Sammanfattning : .... LÄS MER
2. The visual ecology of bees - Tales of diverse eyes and behaviours
Sammanfattning : The buzzing flight of bees is a popular summer hit. Yet, outside of a few familiar species of honeybees and bumblebees, these fantastic little creatures are still mostly unknown. With about twenty-five thousand species, bees are a very diverse group. They can be found in drastically different habitats. LÄS MER
3. Spatial Vision in Bees : Behavioural investigation of spatial resolution and contrast sensitivity
Sammanfattning : Bees use multiple sensory modalities to perform day-to-day tasks. Light allows them to perceive objects and the general features of their surroundings, enabling them to find food and to navigate safely across the landscape. LÄS MER
4. Understanding the adaptive capacity of the bumblebee Bombus terrestris across native and novel environments
Sammanfattning : Anthropogenic stressors such as agricultural intensification, climate change, andincreased densities of non-native managed bees used for crop pollination arecontributing to bee declines. Understanding how and why bees have responded topast environmental changes is crucial for predicting future ones and enablingmitigation to maintain the functioning of both natural and agricultural ecosystems. LÄS MER
5. Small biotopes: Landscape and management effects on pollinators
Sammanfattning : The intensification of agriculture during the second half of the twentieth century, has caused sever declines of farmland biodiversity, where loss of semi-natural habitats is one of the major drivers. To halt further loss of habitat and biodiversity, agri-environmental schemes (AES) are used to compensate farmers to use methods less harmful to the environment. LÄS MER
