Search for dissertations about: "bumblebee"
Showing result 1 - 5 of 13 swedish dissertations containing the word bumblebee.
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1. How the sensory ecology of the bumblebee affects their functional traits
Abstract : Morphological traits are important for trait-based ecological studies as they allow for the prediction of biodiversity across the biosphere. Currently, the predictive power of trait-based ecology is not often applied to terrestrial arthropods, even though they provide us with important agricultural, ecological, and cultural value. READ MORE
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2. The sensory morphology of insect pollinators : From structure to behaviour and ecology
Abstract : Insect pollinators play an important role in balancing our ecosystems and maintaining plant and food diversity. Due to anthropogenic activities such as global warming, habitat loss and degradation, pesticides, and pathogens, many pollinator populations have been undergoing drastic declines in recent decades. READ MORE
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3. Movements in the dark : flying, landing and walking in insects
Abstract : Flying, as well as walking insects rely on vision to regulate locomotion, even in the dark when the visual system is much less reliable. To manage visual control of these behaviours at low light intensities, many insects have evolved optical adaptations, such as larger facet lenses and wider rhabdoms, and neural adaptations, such as spatial and temporal summation, to increase their visual sensitivity. READ MORE
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4. Bee foraging and pollination : Consequences of spatial and temporal variation in flower resources
Abstract : Wild bees foraging in contemporary agricultural landscapes are, because of agricultural intensification, faced with the challenges of reduced flower-rich habitats, as well as a changed spatio-temporal distribution of flower resources. As a result of this and other stressors such as pesticide exposure, widespread declines of bees have been reported. READ MORE
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5. Understanding the adaptive capacity of the bumblebee Bombus terrestris across native and novel environments
Abstract : 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. READ MORE
