Results 91 to 100 of about 2,713 (200)

BOOK REVIEW: Amiet F., Müller A. & Neumeyer R. 1999: Fauna Helvetica 4. Apidae 2 (Colletes, Dufourea, Hylaeus, Nomia, Nomioides, Rhophitoides, Rophites, Sphecodes, Systropha).

open access: yesEuropean Journal of Entomology, 2000
Centre suisse de cartographie de la faune (CSCF), Neuchâtel, 219 pp., 280 figs, 98 distribution maps.
A. PŘIDAL
doaj   +1 more source

Las abejas de Porce familia colletidae (hymenoptera: apoidea) notas y claves para los géneros presentes en la zona de influencia del embalse Porce ii.

open access: yesRevista Facultad Nacional de Agronomía Medellín, 1999
Se presentan claves taxonómicas a nivel de género para la identificación de las abejas colletidas de la zona de Influencia del Embalse Porce II (Porce, Antioquía, Colombia S.A).
Smith Pardo Allan H.
doaj  

Flying doctors zur Grauschimmel Bekämpfung und als Bestäuber im ökologischen Erdbeeranbau - erste Untersuchungsergebnisse im BICOPOLL Projekt [PDF]

open access: yes, 2013
Organic berry and fruit production suffers heavily from the lack of effective disease and pest management tools, and from inadequate insect pollination at times. As a consequence, the expanding demand on organic berries cannot be filled today.
Boecking, Otto, Kreipe, Victoria
core  

Briófitos de Cáceres, Pantanal de Matogrosso, Brasil, con nuevos registros para el estado y el país [PDF]

open access: yes, 2006
The Pantanal Ecosystem is still poorly known in its bryoflora, with almost no literature and very few collections. This paper represents a contribution to better understand the bryophyte diversity in the brazilian Pantanal.
Camara, Paulo Eduardo Aguiar Saraiva   +1 more
core   +1 more source

A tight relationship between the solitary bee Calliopsis (Ceroliopoeum) laeta (Andrenidae, Panurginae) and Prosopis pollen hosts (Fabaceae, Mimosoideae) in xeric South American woodlands [PDF]

open access: yes, 2014
The large genus Calliopsis (Andrenidae, Panurginae) is composed of ten subgenera with polylectic and presumably oligolectic species. These categories have been mainly developed from floral visits of female bees collecting pollen.
Vossler, Favio Gerardo
core   +1 more source

The native bee fauna of the Palouse Prairie (Hymenoptera: Apoidea) [PDF]

open access: yes, 2017
While synoptic collections provide data on the range and general composition of the North American bee fauna, bee communities associated with specific habitats are largely uncharacterized.
Bosque-Pérez, Nilsa   +5 more
core   +2 more sources

Impacts of neonicotinoid use on long-term population changes in wild bees in England [PDF]

open access: yes, 2016
Wild bee declines have been ascribed in part to neonicotinoid insecticides. While short-term laboratory studies on commercially-bred species (principally honeybees and bumblebees) have identified sub-lethal effects, there is no strong evidence linking ...
Bullock, James M.   +6 more
core   +1 more source

Pollination mechanisms and plant-pollinator relationships (2017) [PDF]

open access: yes, 2017
Pollination is one of the most fascinating processes in the natural world. Pollination is how flowering plants reproduce. The process involves the transfer of pollen from the male parts to the female parts of the same or another plant.
Carpenter, Ela   +5 more
core  

Especies nuevas de abejas de Cuba y La Española (Hymenoptera: Colletidae, Megachilidae, Apidae)

open access: yesRevista de Biología Tropical, 2001
Se describen e ilustran cinco especies nuevas de abejas antillanas: Collectes granpiedrensis n. sp. (Cuba) (Colletidae); Osmia (Diceratosmia) stangei n. sp. (República Dominicana); Coelioxys (Cyrtocoelioxys) alayoi n. sp. (Cuba); C.
Julio A. Genaro
doaj  

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