Results 141 to 150 of about 33,235 (336)

The trouble with bumblebees

Nature, 2011
A survey of bumblebees in North America provides unequivocal evidence that four previously common and abundant species have undergone recent and widespread population collapse. Various explanations remain possible.
Mark J. F. Brown
openalex   +3 more sources

Bumblebees gain fitness through learning [PDF]

, 2007
Despite the widespread assumption that the learning abilities of animals are adapted to the particular environments in which they operate, the quantitative effects of learning performance on fitness remain virtually unknown. Here we evaluate the learning
Lars Chittka, Nigel E. Raine
core   +1 more source

The bumble bees (Hymenoptera: Apidae: Bombus) of Arkansas, fifty years later [PDF]

, 2015
Many species of bumble bees (Hymenoptera: Apidae: Bombus Latreille) are declining throughout their ranges in North America, yet detecting population trends can be difficult when historical survey data are lacking.  In the present study, contemporary data
Szalanski, Allen L., Tripodi, Amber D.
core   +2 more sources

Multiple stressors interact to impair the performance of bumblebee (Bombus terrestris) colonies.

Journal of Animal Ecology, 2020
1. Bumblebees are constantly exposed to a wide range of biotic and abiotic stresses which they must defend themselves against to survive. Pathogens and pesticides represent important stressors that influence bumblebee health, both when acting alone or in
C. Botías, Julia C Jones, T. Pamminger, I. Bartomeus, W. Hughes, D. Goulson   +5 more
semanticscholar   +1 more source

Using total abundance as a proxy for wild bee species richness: A practical tool for non‐experts

Journal of Applied Ecology, EarlyView.
The use of a simple but effective proxy could be an important starting point for the expansion of wild bee monitoring initiatives at the regional scale, particularly given the growing involvement of non‐specialists. We provided here a simple implementation framework to use this proxy in rapid biodiversity assessments, such as the evaluation of payment ...
Lorenzo Marini, Elena Gazzea, Matthias Albrecht, András Báldi, Péter Batáry, Ignasi Bartomeus, Riccardo Bommarco, Hans Henrik Bruun, Andree Cappellari, Lorna J. Cole, Cristina Craioveanu, Guillaume Decocq, Imre Demeter, Martin Diekmann, Róbert Gallé, Michael P. D. Garratt, Costanza Geppert, Andrea Holzschuh, Reet Karise, Annette Kolb, Anina Knauer, Anikó Kovács‐Hostyánszki, Audrey Labonté, Klara Leander Oh, Egle Liiskmann, Toshko Ljubomirov, Ola Lundin, Corina Maurer, Francisco P. Molina, Nerea Montes‐Pérez, Sonja Mudri‐Stojnić, Erik Öckinger, Imre Sándor Piross, Simon G. Potts, Willem Proesmans, Snežana Radenković, Chloé A. Raderschall, Jeroen Scheper, Anja Schmidt, Oliver Schweiger, Deepa Senapathi, Josef Settele, Fabien Spicher, Douglas Sponsler, Ingolf Steffan‐Dewenter, Viktor Szigeti, Giovanni Tamburini, Natalia Timus, Edina Török, Adam J. Vanbergen, Elena Velado‐Alonso, Kris Verheyen, Ante Vujić, Marie Winsa, Monika Wulf, Niklaus E. Zimmermann, David Kleijn   +56 more
wiley   +1 more source

Improved Depth Map Estimation from Stereo Images based on Hybrid Method [PDF]

, 2012
In this paper, a stereo matching algorithm based on image segments is presented. We propose the hybrid segmentation algorithm that is based on a combination of the Belief Propagation and Mean Shift algorithms with aim to refine the disparity and depth ...
Breznan, M., Jarina, R., Kamencay, P., Lukac, P., Zachariasova, M.   +4 more
core   +1 more source

Mixed plant and arthropod biodiversity responses to solar park establishment on former agricultural lands

Journal of Applied Ecology, EarlyView.
Our results suggest that while biodiversity can increase in solar parks post‐conversion compared to previous land use, not all taxonomic groups benefit from the land use change. Potential benefits for certain groups (particularly for butterflies and soil‐emergent arthropods) are likely lost due to disturbance during land conversion and solar panel ...
Timea Kocsis, Arjen de Groot, Femke van Beersum, Jolinka Boer, Wim Dimmers, Ivo Laros, Dennis Lammertsma, Marcel Polling, Benjamin Schnerch, Nina Villing, Michiel F. WallisDeVries, Thijs Fijen   +11 more
wiley   +1 more source

Spatial Reorientation by Geometry in Bumblebees

PLoS ONE, 2012
Human and non-human animals are capable of using basic geometric information to reorient in an environment. Geometric information includes metric properties associated with spatial surfaces (e.g., short vs. long wall) and left-right directionality or 'sense' (e.g. a long wall to the left of a short wall).
Sovrano, Valeria Anna, Rigosi, Elisa, Vallortigara, Giorgio   +2 more
openaire   +6 more sources

Evaluating the ability of citizen scientists to identify bumblebee (Bombus) species

PLoS ONE, 2019
Citizen science is an increasingly popular way of engaging volunteers in the collection of scientific data. Despite this, data quality remains a concern and there is little published evidence about the accuracy of records generated by citizen scientists.
S. Falk, Gemma Foster, R. Comont, J. Conroy, H. Bostock, A. Salisbury, Dave J Kilbey, James Bennett, Barbara Smith   +8 more
semanticscholar   +1 more source

Forest fragmentation modifies the composition of bumblebee communities and modulates their trophic and competitive interactions for pollination

Scientific Reports, 2020
Understanding the effects of landscape fragmentation on global bumblebee declines requires going beyond estimates of abundance and richness and evaluating changes in community composition and trophic and competitive interactions.
Carmelo Gómez‐Martínez, A. Aase, Ørjan Totland, Javier Rodríguez‐Pérez, T. Birkemoe, A. Sverdrup‐Thygeson, A. Lázaro   +6 more
semanticscholar   +1 more source