TY  - JOUR
A1  - Breeze, Tom D.
A1  - Vaissiere, Bernhard E.
A1  - Bommarco, Riccardo
A1  - Petanidou, Theodora
A1  - Seraphides, Nicos
A1  - Kozak, Lajos
A1  - Scheper, Jeroen
A1  - Biesmeijer, Jacobus C.
A1  - Kleijn, David
A1  - Gyldenkærne, Steen
A1  - Moretti, Marco
A1  - Holzschuh, Andrea
A1  - Steffan-Dewenter, Ingolf
A1  - Stout, Jane C.
A1  - Pärtel, Meelis
A1  - Zobel, Martin
A1  - Potts, Simon G.
T1  - Agricultural Policies Exacerbate Honeybee Pollination Service Supply-Demand Mismatches Across Europe
JF  - PLOS ONE
N2  - Declines in insect pollinators across Europe have raised concerns about the supply of pollination services to agriculture. Simultaneously, EU agricultural and biofuel policies have encouraged substantial growth in the cultivated area of insect pollinated crops across the continent. Using data from 41 European countries, this study demonstrates that the recommended number of honeybees required to provide crop pollination across Europe has risen 4.9 times as fast as honeybee stocks between 2005 and 2010. Consequently, honeybee stocks were insufficient to supply >90% of demands in 22 countries studied. These findings raise concerns about the capacity of many countries to cope with major losses of wild pollinators and highlight numerous critical gaps in current understanding of pollination service supplies and demands, pointing to a pressing need for further research into this issue.
KW  - economy services
KW  - fruit set
KW  - sequential introduction
KW  - enhance
KW  - biodiversity
KW  - abundance
KW  - declines
KW  - crops
KW  - colonies
KW  - density
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-117692
SN  - 1932-6203
VL  - 9
IS  - 1
ER  - 
TY  - JOUR
A1  - Kleijn, David
A1  - Winfree, Rachael
A1  - Bartomeus, Ignasi
A1  - Carvalheiro, Luísa G.
A1  - Henry, Mickael
A1  - Isaacs, Rufus
A1  - Klein, Alexandra-Maria
A1  - Kremen, Claire
A1  - M'Gonigle, Leithen K.
A1  - Rader, Romina
A1  - Ricketts, Taylor H.
A1  - Williams, Neal M.
A1  - Adamson, Nancy Lee
A1  - Ascher, John S.
A1  - Báldi, András
A1  - Batáry, Péter
A1  - Benjamin, Faye
A1  - Biesmeijer, Jacobus C.
A1  - Blitzer, Eleanor J.
A1  - Bommarco, Riccardo
A1  - Brand, Mariette R.
A1  - Bretagnolle, Vincent
A1  - Button, Lindsey
A1  - Cariveau, Daniel P.
A1  - Chifflet, Rémy
A1  - Colville, Jonathan F.
A1  - Danforth, Bryan N.
A1  - Elle, Elizabeth
A1  - Garratt, Michael P. D.
A1  - Herzog, Felix
A1  - Holzschuh, Andrea
A1  - Howlett, Brad G.
A1  - Jauker, Frank
A1  - Jha, Shalene
A1  - Knop, Eva
A1  - Krewenka, Kristin M.
A1  - Le Féon, Violette
A1  - Mandelik, Yael
A1  - May, Emily A.
A1  - Park, Mia G.
A1  - Pisanty, Gideon
A1  - Reemer, Menno
A1  - Riedinger, Verena
A1  - Rollin, Orianne
A1  - Rundlöf, Maj
A1  - Sardiñas, Hillary S.
A1  - Scheper, Jeroen
A1  - Sciligo, Amber R.
A1  - Smith, Henrik G.
A1  - Steffan-Dewenter, Ingolf
A1  - Thorp, Robbin
A1  - Tscharntke, Teja
A1  - Verhulst, Jort
A1  - Viana, Blandina F.
A1  - Vaissière, Bernard E.
A1  - Veldtman, Ruan
A1  - Ward, Kimiora L.
A1  - Westphal, Catrin
A1  - Potts, Simon G.
T1  - Delivery of crop pollination services is an insufficient argument for wild pollinator conservation
JF  - Nature Communications
N2  - There is compelling evidence that more diverse ecosystems deliver greater benefits to people, and these ecosystem services have become a key argument for biodiversity conservation. However, it is unclear how much biodiversity is needed to deliver ecosystem services in a cost- effective way. Here we show that, while the contribution of wild bees to crop production is significant, service delivery is restricted to a limited subset of all known bee species. Across crops, years and biogeographical regions, crop-visiting wild bee communities are dominated by a small number of common species, and threatened species are rarely observed on crops. Dominant crop pollinators persist under agricultural expansion and many are easily enhanced by simple conservation measures, suggesting that cost- effective management strategies to promote crop pollination should target a different set of species than management strategies to promote threatened bees. Conserving the biological diversity of bees therefore requires more than just ecosystem-service-based arguments.
KW  - ecosystem services
KW  - european countries
KW  - abundance
KW  - native bees
KW  - biodiversity conservation
KW  - plant diversity
KW  - fruit set
KW  - productivity
KW  - decline
KW  - pollen
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-151879
VL  - 6
IS  - 7414
ER  - 
TY  - JOUR
A1  - Holzschuh, Andrea
A1  - Dainese, Matteo
A1  - Gonzalez-Varo, Juan P.
A1  - Mudri-Stojnic, Sonja
A1  - Riedinger, Verena
A1  - Rundlöf, Maj
A1  - Scheper, Jeroen
A1  - Wickens, Jennifer B.
A1  - Wickens, Victoria J.
A1  - Bommarco, Riccardo
A1  - Kleijn, David
A1  - Potts, Simon G.
A1  - Roberts, Stuart P. M.
A1  - Smith, Henrik G.
A1  - Vilà, Montserrat
A1  - Vujic, Ante
A1  - Steffan-Dewenter, Ingolf
T1  - Mass-flowering crops dilute pollinator abundance in agricultural landscapes across Europe
JF  - Ecology Letters
N2  - Mass-flowering crops (MFCs) are increasingly cultivated and might influence pollinator communities in MFC fields and nearby semi-natural habitats (SNHs). Across six European regions and 2 years, we assessed how landscape-scale cover of MFCs affected pollinator densities in 408 MFC fields and adjacent SNHs. In MFC fields, densities of bumblebees, solitary bees, managed honeybees and hoverflies were negatively related to the cover of MFCs in the landscape. In SNHs, densities of bumblebees declined with increasing cover of MFCs but densities of honeybees increased. The densities of all pollinators were generally unrelated to the cover of SNHs in the landscape. Although MFC fields apparently attracted pollinators from SNHs, in landscapes with large areas of MFCs they became diluted. The resulting lower densities might negatively affect yields of pollinator- dependent crops and the reproductive success of wild plants. An expansion of MFCs needs to be accompanied by pollinator-supporting practices in agricultural landscapes.
KW  - wild plant pollination
KW  - Colony growth
KW  - Densities
KW  - Context
KW  - crop pollination
KW  - Oilseed rape
KW  - Nesting resources
KW  - Bee abundance
KW  - Yield
KW  - Richness
KW  - Habitats
KW  - Agricultural intensification
KW  - agri-environment schemes
KW  - biofuels
KW  - ecosystem services
KW  - field boundaries
KW  - landscape compositionv
KW  - non-crop habitats
KW  - semi-natural habitats
KW  - spillover
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-187356
VL  - 19
IS  - 10
ER  -