Results 11 to 20 of about 2,706 (173)

Separating Sampling Bias From Abundance Shows That Different Methods Catch Different Wild Bees. [PDF]

open access: yesEcol Evol
Comparing community sampling methods' relative taxonomic biases is critical to interpreting the data they collect, but measuring bias explicitly is difficult when methods also produce different sample sizes. Here, we control for absolute abundance while comparing sample composition and richness of three common methods for sampling wild bee communities.
McCarthy MW   +5 more
europepmc   +2 more sources

Multiple Key Hosts and Network Structure Shape Viral Prevalence Across Multispecies Communities of Bees. [PDF]

open access: yesEcol Lett
This study develops a quantitative framework that integrates field data, epidemiological models, simulations, and Bayesian inference to identify key viral hosts in multispecies bee communities. By estimating species‐specific R0 values from flower‐visitor networks and viral screening, we show that honeybees, as well as other wild bees, can drive the ...
Pluta P   +4 more
europepmc   +2 more sources

Barefoot Trees for Bees: Nesting Site Characteristics of the Ground-Nesting Bee <i>Andrena vaga</i> in an Urban Environment. [PDF]

open access: yesEcol Evol
Andrena vaga nesting sites were preferably located under canopy cover. The soils of the nesting sites were warmer and drier and showed less penetration resistance and vegetation cover compared to uncolonized control areas. Experimental bare ground plots located within control areas did not provoke colonization of Andrena vaga, assumingly due to social ...
Gardein H   +3 more
europepmc   +2 more sources

Leveraging local species data, a global database, and an occupancy model to explore bee-plant interactions. [PDF]

open access: yesEcol Appl
Abstract Global declines in bee populations are threatening the ecosystem services they provide, including pollination. Many bee–plant interactions are understudied, producing an incomplete understanding of resulting ecosystem‐level vulnerabilities. The last decade has generated a wealth of opportunistic data originating from natural history collection
Lee MJ, DiRenzo GV, Diao C, Seltmann KC.
europepmc   +2 more sources

A new species of Colletes (Hymenoptera: Apoidea: Colletidae) from northern Florida and Georgia, with notes on the Colletes of those states [PDF]

open access: yes, 2016
Colletes ultravalidus Hall & Ascher, new species, is described from several sites in northwestern Florida and southeastern Georgia.  It is a member of the inaequalis species group, very similar to C.
Almquist, David T   +2 more
core   +2 more sources

A record of bilateral gynandromorphism in Epeolus (Hymenoptera: Apidae: Nomadinae) [PDF]

open access: yes, 2018
The discovery of a gynandromorph of a North American Epeolus Latreille is reported. A specimen of E. flavofasciatus Smith from Flagstaff, Arizona, USA discovered in the collection of the American Museum of Natural History (AMNH) exhibits male-specific ...
Onuferko, Thomas M
core   +2 more sources

Extinctions of aculeate pollinators in Britain and the role of large-scale agricultural changes [PDF]

open access: yes, 2014
Pollinators are fundamental to maintaining both biodiversity and agricultural productivity, but habitat destruction, loss of flower resources, and increased use of pesticides are causing declines in their abundance and diversity. Using historical records
Biesmeijer   +8 more
core   +1 more source

The floral hosts and distribution of a supposed creosote bush specialist, Colletes stepheni Timberlake (Hymenoptera: Colletidae) [PDF]

open access: yes, 2015
Colletes stepheni Timberlake, previously thought to be a narrow oligolege of Larrea (creosote bush) of limited distribution in the Sonoran Desert, is found to be a much more widely distributed psammophile of the Sonoran, Mojave and Great Basin Deserts ...
Griswold, Terry L, Nelson, Rebekah A.
core   +2 more sources

Revision of the South African endemic bee genus Redivivoides Michener, 1981 (Hymenoptera: Apoidea: Melittidae) [PDF]

open access: yes, 2012
The South African endemic bee genus Redivivoides Michener, 1981 is revised and redefined. The genus comprises seven species, six of which are described here as new: Redivivoides capensis sp. nov. ♀♂, R. eardleyi sp. nov. ♀, R. kamieskroonensis sp. nov. ♀,
Kuhlmann, Michael
core   +5 more sources

On the identity of Colletes neoqueenensis (Colletidae: Colletinae) from southern South America [PDF]

open access: yes, 2019
Colletes neoqueenensis Friese, 1910 is a rare species from southern Argentina known to me from its type series only. The species has also been recorded from Chile, but its occurrence in that country remains to be confirmed.
Ferrari, Rafael Rodrigues
core   +2 more sources

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