Results 31 to 40 of about 1,393 (169)

Claves y datos nuevos de las especies ibéricas del género Stelis Panzer, 1806 (Hymenoptera, Apoidea, Megachilidae, Anthidiini)

Graellsia, 2009
El trabajo actual, dentro de la revisión que se está realizando de la familia Megachilidae en la fauna ibérica, incluye las claves de identificación para las especies del género Stelis Panzer, 1806. Las claves se acompañan de numerosas ilustraciones para
C. Ornosa, F. Torres, J. Ortiz-Sánchez
doaj   +1 more source

Claves de identificación para las especies ibéricas del género Coelioxys Latreille, 1809 (Hymenoptera, Apoidea, Megachilidae)

Graellsia, 2009
El trabajo actual, dentro de la revisión que está en curso sobre la familia Megachilidae en la fauna ibérica, incluye las claves de identificación para las 20 especies del género Coelioxys Latreille, 1809 que, según el conocimiento actual, habitan en ...
F. J. Ortiz-Sánchez, F. Torres, C. Ornosa   +2 more
doaj   +1 more source

Reproduction of the red mason solitary bee Osmia rufa (syn. Osmia bicornis) (Hymenoptera: Megachilidae) in various habitats

European Journal of Entomology, 2015
Osmia rufa L. (Osmia bicornis L.) is a species of a solitary bee, which pollinates many wild and cultivated plants. A total of 900 cocoons containing mature individuals of Osmia rufa L.
Monika FLISZKIEWICZ, Anna KUŚNIERCZAK, Bożena SZYMAŚ   +2 more
doaj   +1 more source

Pollinator community composition and pollen resource use in calcareous grasslands under different landscape contexts across Europe

Journal of Animal Ecology, EarlyView.
In this paper, we show that pronounced differences in pollinator communities exist between grasslands embedded in contrasting agricultural landscape contexts. Opportunistic foraging strategies of most pollinators resulted in large interaction turnover, but these shifts did not translate into major changes in overall network structure, most likely as a ...
Olivia Bernhardsson, Epp Valdaru, Tsipe Aavik, Lucie M. Baltz, Tomáš Dostálek, L. Marie Ende, Khalil Jegham, Marianne Kivastik, Zuzana Münzbergová, Hana Pánková, Jan Plue, Patrycja Pluta, Iris Reinula, Virve Sõber, Panagiotis Theodorou, Sabrina Träger, Mari‐Liis Viljur, Hans Jacquemyn   +17 more
wiley   +1 more source

The dual crisis: Climate change simultaneously drives pollinator decline and pest outbreaks

Agricultural and Forest Entomology, EarlyView.
Climate change acts as an asymmetric ecological filter, favouring r‐selected pest traits (rapid reproduction, generalism) while disadvantaging K‐selected pollinators. For every 1°C of warming, bee species richness declines ~25% since the 1990s, while pest‐induced crop losses increase by 10%–25%. A network‐centric approach integrating climate‐responsive
Diriba Fufa Serdo
wiley   +1 more source

Taxonomic and functional diversity of urban bees of the world

Conservation Biology, EarlyView.
Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso, Pietro K. Maruyama, Ingrid N. Gomes, Lorena B. Valadão‐Mendes, Victor H. D. Silva, Larissa Lorraine, Jordana O. Borges, Rogério V. Gonçalves, Léo C. Rocha‐Filho, Renata Trevizan, Yasmine Antonini   +10 more
wiley   +1 more source

Forest edges buffer effects of agricultural management on bee–plant interaction networks

Ecological Entomology, EarlyView.
Agricultural management effects: Organic and conventional crop margins host similar bee and plant species, but network structure differs: organic farms exhibit higher interaction diversity, conventional farms higher connectance. Role of forest edges: Native forest edges stabilize bee–plant networks by providing continuous floral resources and suitable ...
Samantha Marx de Castro, Cauê Nagatani, Vania Nobuko Yoshikawa, Franciny Yuko Urushima, Kelli dos Santos Ramos, Guaraci Duran Cordeiro, Maria Santina de Castro Morini   +6 more
wiley   +1 more source

Notes on a nest of Megachile (Moureapis) apicipennis Schrottky (Megachilidae) constructed in an abandoned gallery of Xylocopa Frontalis (Olivier) (Apidae)

Sociobiology, 2017
Notes on a nest of the leafcutting bee Megachile (Moureapis) apicipennis Schrottky (Megachilidae) found in an abandoned gallery excavated by the carpenter bee Xylocopa frontalis (Olivier) (Apidae) are presented.
Léo Correia Rocha-Filho, Aline C. Martins, Paola Marchi   +2 more
doaj   +1 more source

Influence of elevation, climate, snowmelt and floral abundance on body size of solitary bees

Ecological Entomology, EarlyView.
We measured body size in bee species from a 10‐year specimen collection from Colorado sub‐alpine meadows (2450–3450 m) and tested effects of elevation and annual snowmelt, climate and floral abundance. 2 out of 4 bee species collected across a broad elevation range showed a decline in body size with higher elevations; the other two showed no effect ...
Lachlan C. Jones, Melanie R. Kazenel, Kristin Conrad, Jane E. Ogilvie, Ian K. Breckheimer, Rebecca E. Irwin   +5 more
wiley   +1 more source

Fragmented grasslands in different landscape structures provide different opportunities for cavity‐nesting Hymenoptera

Insect Conservation and Diversity, EarlyView.
Grassland fragmentation effects on cavity‐nesting Hymenoptera are habitat‐specific. Isolated sand steppe fragments are associated with higher brood‐cell abundance. In loess steppes, higher flower frequency increases bee brood‐cell production and parasitoid activity. Abstract The global decline in insects threatens ecosystem functioning, but the drivers
Edina Török, Róbert Gallé, Dávid Korányi, Zsolt Józan, Tamás Lakatos, Katalin Szitár, Péter Batáry   +6 more
wiley   +1 more source