Essays about: "B.terrestris"
Showing result 1 - 5 of 6 essays containing the word B.terrestris.
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1. Competition between managed honeybees and wild bumblebees - Quantifying dietary overlap in semi-natural grasslands
University essay from Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)Abstract : The decline of bees, such as bumblebees, over the last decades raises concerns as they are key pollinators in both agricultural and natural ecosystems. One proposed cause for the decline of wild bees is competition for food resources with managed honeybees. READ MORE
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2. The relative effects of season and imported bumblebee colonies on the distribution of ten common pathogens in wild Swedish bumblebees
University essay from Uppsala universitet/Institutionen för medicinsk cellbiologiAbstract : Due to recent declines regarding pollinators, The Swedish Civil Contingencies Agency launched a project investigating possible biological threats towards wild bumblebees. This led to an extensive collection of bumblebees from areas in southern Sweden during the summer of 2018. READ MORE
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3. Insect pollination of faba beans, Vicia faba : the abundance and foraging behaviour of different pollinators and their effect on crop yield
University essay from SLU/Dept. of EcologyAbstract : Faba beans, Vicia faba is known as a self-pollinating crop, however significant yield increases have been found in plants visited by honeybees and bumblebees. The bees either make positive visits, entering the flower and transferring pollen between different flowers resulting in cross-pollination, or negative visits, piercing the flower to “steal” nectar or collect nectar from extrafloral nectaries. READ MORE
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4. Importance of bumble bee community evenness for crop pollination : a simulation analysis of Swedish red clover seed production
University essay from SLU/Dept. of EcologyAbstract : The red clover seed production systems are dependent on pollinators for increase in red clover seed yield and its stability. When compared to domesticated honey bees, the wild bumble bees are highly efficient in pollinating the red clover crop due to its relatively longer tongue length. Longer dependence on single pollinator species i.e. READ MORE
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5. The effect of field-level clothianidin exposure on the prevalence and loads of pathogenic and non-pathogenic microbes in bumblebees (B. terrestris)
University essay from SLU/Dept. of EcologyAbstract : .... READ MORE