Zobrazeno 1 - 10
of 748
pro vyhledávání: '"Peter G. Kevan"'
Publikováno v:
Frontiers in Bee Science, Vol 2 (2024)
Evidence is widespread that many species of Bombus are in population and biogeographical decline in response to adverse effects of global climate warming. The complex interactions of the mechanisms at the root of the declines are poorly understood. A
Externí odkaz:
https://doaj.org/article/47c35ee05cc0489ea9d9556bacdcbaa8
Autor:
Peter G. Kevan, Charlotte Coates
Publikováno v:
FACETS, Vol 9, Iss , Pp 1-20 (2024)
Plant structures that enclose trapped air are morphologically and taxonomically diverse. They range from pubescence (trichomes) on various parts of plants to flowers, inflorescences, stems, culms (above-ground jointed stems of grasses), petioles, ped
Externí odkaz:
https://doaj.org/article/dcf4cd0346dc476885df1cd50638c7da
Autor:
Vera Vasas, Mark C. Lowell, Juliana Villa, Quentin D. Jamison, Anna G. Siegle, Pavan Kumar Reddy Katta, Pushyami Bhagavathula, Peter G. Kevan, Drew Fulton, Neil Losin, David Kepplinger, Michael K. Yetzbacher, Shakiba Salehian, Rebecca E. Forkner, Daniel Hanley
Publikováno v:
PLoS Biology, Vol 22, Iss 1 (2024)
Externí odkaz:
https://doaj.org/article/296372414959458b958613a52a0b7e72
Autor:
Peter G. Kevan, Becky Godglick
Publikováno v:
Arctic Science, Vol 3, Iss 4, Pp 745-755 (2017)
In comparing the incidence of dioecy in North American floras, we report a strong, positive correlation with increasing latitude. Dioecy in the High Arctic is highly correlated with woodiness, as elsewhere. It is significantly correlated with fleshy,
Externí odkaz:
https://doaj.org/article/8b5f62d69f154a0fad4b551df1c6f105
Publikováno v:
Journal of Pollination Ecology, Vol 16, Pp 115-133 (2015)
Diptera are important flower visitors and pollinators for many plant species and in a variety of habitats. Although Diptera are not as well studied as other groups of pollinators, there is a growing literature that we review here about the ecology of
Externí odkaz:
https://doaj.org/article/5c389e64ec1c49d59c0e9d4ff293044c
Publikováno v:
Journal of Pollination Ecology, Vol 12, Pp 63-94 (2014)
This paper comprises Part II of a review of flower visitation and pollination by Diptera (myiophily or myophily). While Part I examined taxonomic diversity of anthophilous flies, here we consider the rewards and attractants used by flowers to procure
Externí odkaz:
https://doaj.org/article/9a9b3a50f2a2418db5b6e312b64e85f5
Autor:
Daniel Paiva Silva, Joseph Moisan-De Serres, Darcet R. Souza, Suzane B. Hilgert-Moreira, Mariana Z. Fernandes, Peter G. Kevan, Breno M. Freitas
Publikováno v:
Journal of Pollination Ecology, Vol 11, Pp 27-32 (2013)
Honey bees depend on flower resources (nectar and pollen) to supply individual and colony needs. Although behavioural studies already assessed optimum foraging patterns of bumblebees, honey bees foraging behavioural patterns have been poorly assessed
Externí odkaz:
https://doaj.org/article/3518aa94b45b4f7e9a6fa80341bd5ca3
Autor:
Carolin Mayer, Lynn Adler, W. Scott Armbruster, Amots Dafni, Connal Eardley, Shuang-Quan Huang, Peter G. Kevan, Jeff Ollerton, Laurence Packer, Axel Ssymank, Jane C. Stout, Simon G. Potts
Publikováno v:
Journal of Pollination Ecology, Pp 8-23 (2011)
To inspire new ideas in research on pollination ecology, we list the most important unanswered questions in the field. This list was drawn up by contacting 170 scientists from different areas of pollination ecology and asking them to contribute their
Externí odkaz:
https://doaj.org/article/95806343b4f247929ed4371166ac9465
Publikováno v:
Electronic Journal of Differential Equations, Vol 2010, Iss 19, Pp 85-98 (2010)
We present a simple mathematical model of the infestation of a honeybee colony by the Acute Paralysis Virus, which is carried by parasitic varroa mites (Varroa destructor). This is a system of nonlinear ordinary differential equations for the depende
Externí odkaz:
https://doaj.org/article/03ba6c000475426d87824a66d8d1345c
Autor:
Hamida B. Mirwan, Peter G. Kevan
Publikováno v:
Psyche: A Journal of Entomology, Vol 2013 (2013)
Social learning occurs when one individual learns from another, mainly conspecific, often by observation, imitation, or communication. Using artificial flowers, we studied social learning by allowing test bumblebees to (a) see dead bumblebees arrange
Externí odkaz:
https://doaj.org/article/7916dcff487a456e969a4bf218265291