Results 41 to 50 of about 6,054 (217)

Target enrichment of ultraconserved elements from arthropods provides a genomic perspective on relationships among Hymenoptera

open access: yes, 2014
Gaining a genomic perspective on phylogeny requires the collection of data from many putatively independent loci collected across the genome. Among insects, an increasingly common approach to collecting this class of data involves transcriptome ...
Brady, Seán G.   +3 more
core   +2 more sources

Przestrzenne i czasowe zróżnicowanie Apoidea w lasach Wielkopolskiego Parku Narodowego [PDF]

open access: yes, 1994
Results of the investigations of spatial and temporal differentiations of Apoidea in the forests of Wielkopolski National Park were presented. It was shown that the both forest floor differ with the degree of species differentiation and domination’s ...
Banaszak, Józef, Cierzniak, Tomasz
core  

Contrasting effects of mass-flowering crops on bee pollination of hedge plants at different spatial and temporal scales [PDF]

open access: yes, 2013
Landscape-wide mass-flowering of oilseed rape (canola Brassica napus) can considerably affect wild bee communities and pollination success of wild plants.
Batáry, Péter   +4 more
core   +1 more source

AutoPollS: A tool for automated monitoring of pollinators using deep learning

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Deep learning and computer vision hold enormous potential for automated monitoring of biodiversity, including pollinators and other insects. Efficient, scalable monitoring of insect pollinators is crucial given pollinators' role in supporting biodiversity and agricultural productivity amidst declining pollinator populations.
Matthew A.‐Y. Smith   +13 more
wiley   +1 more source

Utilizing natural history collections and data mining to assess flower associations and phenology of North American bees in the genus Andrena (Hymenoptera: Andrenidae) subgenus Plastandrena

open access: yesJournal of Pollination Ecology
Even though bees are the most frequently discussed and important pollinators, most native species’ fundamental ecology including phenology and flower preferences is not known.
Wyatt Zabinski
doaj   +1 more source

The bee fauna of an Atlantic coastal plain tidal marsh community in Southern New England, USA [PDF]

open access: yes, 2019
 With growing evidence of changes in local abundance, geographical range, and species diversity of wild bees, it is imperative to document wild bee communities in representative habitats throughout North America.
Stoner, Kimberly A., Zarrillo, Tracy A.
core   +2 more sources

Concentrated vulnerabilities in bees: Diet specialists have smaller geographic ranges

open access: yesInsect Conservation and Diversity, EarlyView.
Niche breadth theory predicts a positive association between range size and diet breadth, which could concentrate risk among specialists, but this is not well established for bees. Using global occurrence data (range size) and natural history collection‐derived pollen data (diet breadth), we compared these traits in 633 species from six families and ...
Charles N. Thrift   +4 more
wiley   +1 more source

An extraordinary northward range extension of the bee Andrena (Cnemidandrena) pachucensis Donovan, 1977 (Hymenoptera, Andrenidae) to New Mexico, USA [PDF]

open access: yesCheck List
Andrena Fabricius, 1775 is one of the most diverse bee genera worldwide, yet the biology and distribution of many species are poorly known. Here I present the first record of Andrena pachucensis Donovan, 1977 in the United States.
Wyatt J. Zabinski
doaj   +3 more sources

Historical and recent investigations on the bee fauna of Taiwan (Hymenoptera, Apoidea) [PDF]

open access: yes, 2008
The bee fauna of Taiwan was studied intensively in the first half of last century and was based in large parts on the extensive material collected by Hans Sauter between 1902 and 1914. Subsequent studies on bees of Taiwan have only been sporadic.
Dubitzky, Andreas   +2 more
core  

Patterns of size variation in bees at a continental scale: does Bergmann’s rule apply [PDF]

open access: yes, 2018
Body size latitudinal clines have been widley explained by the Bergmann’s rule in homeothermic vertebrates. However, there is no general consensus in poikilotherms organisms in particular in insects that represent the large majority of wildlife.
Adolf   +52 more
core   +2 more sources

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