Results 131 to 140 of about 33,235 (336)

Understanding the Flight of the Bumblebee

PLoS Biology, 2012
Bumblebees are remarkable navigators. While their flight paths may look scattered to the casual eye, all that buzzing about is anything but random. Like the travelling salesman in the famous mathematical problem of how to take the shortest path along multiple stops, bumblebees quickly find efficient routes among flowers. And once they find a good route,
openaire   +4 more sources

Complex effects of climatic variation on bumblebee queen fitness

Journal of Animal Ecology, EarlyView.
A dearth of data on the health of wild‐insect populations hinders efforts to fully grasp the extent of historical population declines or unravel the mechanisms driving these effects. We help fill this data deficit by testing how climatic variation affects health, reproduction, size and survival in bumblebees—important insect pollinators.
Ruth Archer, Paul Schmid‐Hempel, Regula Schmid‐Hempel, Lena Wilfert   +3 more
wiley   +1 more source

Using citizen science to monitor pollination services [PDF]

, 2015
1. Pollination by insects is a vital ecosystem service and the need for its assessment is increasing in recognition and political pressure, but there are currently no large-scale systematic monitoring schemes in place to measure the direct provision of ...
Ahrné, Bateman, Costanza, Cussans, Dickinson, Dicks, Dougherty, Drayner, Free, Free, Gallai, Garratt, Ghazoul, Goulson, Goulson, Haines-Young, Hanna, Jauker, Kendall, Klein, Kremen, Kremen, Mackechnie, Oberhauser, Osborne, Owen, Potter, Samnegård, Schmeller, Silvertown, Smith, Steffan-Dewenter, Westphal, WHO, Winfree   +34 more
core   +1 more source

Temperature influences pollinators' choice of floral partners independently of community composition

Journal of Animal Ecology, EarlyView.
This paper presents novel research that empirically demonstrates a direct link between temperature and plant–pollinator interaction patterns, independently of changes to community composition in either guild. We find that even without changes to community composition, pollinators including bumblebees exhibit different interactions across temperatures ...
K. C. Arrowsmith, Madeleine D. Strait, Manogya Chandar, Annie Schiffer, Berry J. Brosi   +4 more
wiley   +1 more source

From cities to refuges for pollinators: Urban practices for enhancing pollinator habitats in changing landscapes

Journal of Applied Ecology, EarlyView.
A framework for the support of pollinators in urban areas is developed here, based on five pillars: nesting, flower resources, artificial support, management and society acceptance, with additional key elements from science and society. Society should incorporate strategies for pollinators as in this framework by means of co‐planning with stakeholders,
Rosa Ranalli, Sara Borghesan, Massimo Labra, Paolo Biella   +3 more
wiley   +1 more source

Urbanised landscape and microhabitat differences can influence flowering phenology and synchrony in an annual herb

Journal of Applied Ecology, EarlyView.
In conclusion, our results indicate that in addition to landscape changes associated with urbanisation, variations in local microhabitats also influence the flowering phenology and synchrony of C. communis populations. Urbanised landscapes and differences in microhabitats could contribute to the diversification of phenological patterns between ...
Hinata Fujiwara, Hiroto Yamaguchi, Kazuyoshi Nakata, Koki R. Katsuhara   +3 more
wiley   +1 more source

The Effect of Oral Administration of dsRNA on Viral Replication and Mortality in Bombus terrestris

Viruses, 2015
Israeli acute paralysis virus (IAPV), a single-stranded RNA virus, has a worldwide distribution and affects honeybees as well as other important pollinators.
Niels Piot, Simon Snoeck, Maarten Vanlede, Guy Smagghe, Ivan Meeus   +4 more
doaj   +1 more source

Gravity, Lorentz Violation, and the Standard Model [PDF]

, 2004
The role of the gravitational sector in the Lorentz- and CPT-violating Standard-Model Extension (SME) is studied. A framework is developed for addressing this topic in the context of Riemann-Cartan spacetimes, which include as limiting cases the usual ...
A. Anisimov, A. de Oliveira-Costa, A. Kaiser, A. P. Lightman, A. R. Frey, B. Caron, B. Ratra, B. Ratra, B. Willke, C. Adam, C. E. Carlson, C. Eling, C. M. Will, C. M. Will, C. M. Will, C. P. Burgess, D. Bear, D. Colladay, D. Colladay, D. Colladay, D. Colladay, D. Colladay, D. Colladay, D. F. Phillips, D. Hils, D. Sudarsky, D. Sudarsky, F. W. Hehl, G. Amelino-Camelia, G. Gabrielse, G. Hinshaw, G. M. Shore, G. M. Shore, G. M. Shore, G. W. Gibbons, H. Dehmelt, H. Müller, H. Müller, H. Müller, I. L. Shapiro, I. Mocioiu, I. T. Drummond, J. Alfaro, J. D. Bjorken, J. L. Hewett, J. Lipa, J. M. Link, J. N. Bahcall, K. Abe, K. Nordtvedt, L. Parker, L. Parker, L.-S. Hou, M. A. Humphrey, M. A. Humphrey, M. Ando, M. P. Haugan, M. S. Berger, N. E. Mavromatos, N. Isgur, O. Bertolami, O. W. Greenberg, O. W. Greenberg, P. Kraus, P. van Nieuwenhuizen, R. Ackerstaff, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Jackiw, R. Jackiw, R. Lehnert, R. Mittleman, R. Myers, R. Utiyama, R. W. Hellings, S. Coleman, S. Hollands, S. M. Carroll, S. M. Carroll, S. Mohanty, T. Jacobson, T. Jacobson, T. W. B. Kibble, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. Alan Kostelecký, V. Barger, V. W. Hughes, Y. J. Ng, Z. Guralnik   +114 more
core   +2 more sources

Lower bumblebee colony reproductive success in agricultural compared with urban environments

Proceedings of the Royal Society B: Biological Sciences, 2018
Urbanization represents a rapidly growing driver of land-use change. While it is clear that urbanization impacts species abundance and diversity, direct effects of urban land use on animal reproductive success are rarely documented.
Ash E. Samuelson, Richard J. Gill, Mark J. F. Brown, E. Leadbeater   +3 more
semanticscholar   +1 more source

An exact Schwarzschild-like solution in a bumblebee gravity model [PDF]

, 2017
We have obtained an exact vacuum solution from a gravity sector contained in the minimal standard-model extension. The theoretical model assumes a Riemann spacetime coupled to the bumblebee field which is responsible for the spontaneous Lorentz symmetry ...
R. Casana, A. Cavalcante, F. P. Poulis, E. Santos   +3 more
semanticscholar   +1 more source