Results 21 to 30 of about 133,960 (214)

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

Big bees do a better job : intraspecific size variation influences pollination effectiveness [PDF]

, 2015
Funding: School of Biology, University of St AndrewsBumblebees (Bombus spp.) are efficient pollinators of many flowering plants, yet the pollen deposition performance of individual bees has not been investigated.
Finlayson, Kathryn, Willmer, Patricia Gillian   +1 more
core   +3 more sources

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

Equivocal evidence for colony level stress effects on bumble bee pollination services [PDF]

, 2020
Climate change poses a threat to global food security with extreme heat events causing drought and direct damage to crop plants. However, by altering behavioural or physiological responses of insects, extreme heat events may also affect pollination ...
Richard F Pywell, Nevine Mica-Hawkyard, Andrew Wilby, Wilby, A., Walkington, S., Walkington, Sarah, Ben A Woodcock, Arran Greenop, Woodcock, B.A., Wilby, Andrew, Greenop, A., Sarah Walkington, Mica-Hawkyard, N., Pywell, R.F., Pywell, R. F., Mica-Hawkyard, Nevine, Greenop, Arran, Cook, S.M., Pywell, Richard F., Cook, S. M., Samantha M Cook, Cook, Samantha M., Woodcock, B. A., Woodcock, Ben A.   +23 more
core   +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

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

Information flow and regulation of foraging activity in bumble bees (Bombus spp.) [PDF]

, 2004
Publisher version: http://www.apidologie ...
Lars Chittka, Anna Dornhaus, Chittka, Lars, Chittka, L, Dornhaus, A, Dornhaus, Anna   +5 more
core   +1 more source

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