Results 11 to 20 of about 23,969 (226)

The abundance and pollen foraging behaviour of bumble bees in relation to population size of whortleberry (Vaccinium uliginosum). [PDF]

PLoS ONE, 2012
Habitat fragmentation can have severe effects on plant pollinator interactions, for example changing the foraging behaviour of pollinators. To date, the impact of plant population size on pollen collection by pollinators has not yet been investigated ...
Carolin Mayer, Denis Michez, Alban Chyzy, Elise Brédat, Anne-Laure Jacquemart   +4 more
doaj   +1 more source

Protocol for Initiating and Monitoring Bumble Bee Microcolonies with Bombus impatiens (Hymenoptera: Apidae)

Bio-Protocol, 2022
Populations of some bumble bee species are in decline, prompting the need to better understand bumble bee biology and for assessing the effects of environmental stressors on these important pollinators.
David Lehmann
doaj   +1 more source

Parasites, parasitoids, and hive products that are potentially deleterious to wild and commercially raised bumble bees (Bombus spp.) in North America

Journal of Pollination Ecology, 2023
Bumble bees are important pollinators for a great diversity of wild and cultivated plants, and in many parts of the world certain species have been found to be in decline, gone locally extinct, or even globally extinct.
Elaine Evans, James Strange, Ben Sadd, Amber Tripodi, Laura Figueroa, Laurie Adams, Sheila Colla, Michelle Duennes, David Lehmann, Heather Moylett, Leif Richardson, James W. Smith, Tamara Smith, Edward Spevak, David W. Inouye   +14 more
doaj   +1 more source

Introduced honey bees increase host plant abundance but decrease native bumble bee species richness and abundance

Ecosphere, 2022
Long‐term variation in the population density of introduced honey bees (Apis mellifera) has been shown to be associated with variations in floral traits in alpine lotus (Saussurea nigrescens).
Ruijun Su, Wenfei Dai, Yulian Yang, Xuelin Wang, Rui Gao, Mengying He, Chuan Zhao, Junpeng Mu   +7 more
doaj   +1 more source

Decline and Conservation of Bumble Bees [PDF]

Annual Review of Entomology, 2008
Declines in bumble bee species in the past 60 years are well documented in Europe, where they are driven primarily by habitat loss and declines in floral abundance and diversity resulting from agricultural intensification. Impacts of habitat degradation and fragmentation are likely to be compounded by the social nature of bumble bees and their largely ...
D, Goulson, G C, Lye, B, Darvill
openaire   +2 more sources

Bumble bee forager abundance on lowland heaths is predicated by specific floral availability rather than the presence of honey bee foragers: evidence for forage resource partitioning

Journal of Pollination Ecology, 2018
Honey bees are being scrutinized for their potential impact upon wild bees. In lowland heath mosaics, a simple but resource rich habitat for pollinators, there is a higher probability of niche overlap for bumble bees and honey bees due to the requirement
Elizabeth Franklin, Tadhg Carroll, Debborah Blake, Kate Rickard, Anita Diaz   +4 more
doaj   +1 more source

Conservation Conundrum: At-risk Bumble Bees (Bombus spp.) Show Preference for Invasive Tufted Vetch (Vicia cracca) While Foraging in Protected Areas [PDF]

, 2019
In recent decades, some bumble bee species have declined, including in North America. Declines have been reported in species of bumble bees historically present in Ontario, including: yellow bumble bee (Bombus fervidus) (Fabricus, 1798), American bumble ...
Colla, Sheila R, Gibson, Shelby D, Liczner, Amanda R   +2 more
core   +1 more source

Colonies of Bumble Bees (Bombus impatiens) Produce Fewer Workers, Less Bee Biomass, and Have Smaller Mother Queens Following Fungicide Exposure

Insects, 2015
Bees provide vital pollination services to the majority of flowering plants in both natural and agricultural systems. Unfortunately, both native and managed bee populations are experiencing declines, threatening the persistence of these plants and crops.
Olivia M. Bernauer, Hannah R. Gaines-Day, Shawn A. Steffan   +2 more
doaj   +1 more source

Bumble Bee Foraged Pollen Analyses in Spring Time in Southern Estonia Shows Abundant Food Sources

Insects, 2021
Agricultural landscapes usually provide higher quantities of single-source food, which are noticeably lacking in diversity and might thus have low nutrient value for bumble bee colony development.
Anna Bontšutšnaja, Reet Karise, Marika Mänd, Guy Smagghe   +3 more
doaj   +1 more source

The Plight of the Bumble Bee: The Impact of the Bumble Bee Gut Microbiome on Pathogen Infection Rates [PDF]

, 2016
Bumble bees are one of the most common and important non-managed pollinators of agricultural crops and are therefore vital to society’s ecological and agricultural health.
Mockler, Blair
core   +1 more source