Parallel Declines in Pollinators and Insect-Pollinated Plants in Britain and the Netherlands

@article{Biesmeijer2006ParallelDI,
  title={Parallel Declines in Pollinators and Insect-Pollinated Plants in Britain and the Netherlands},
  author={Jacobus C. Biesmeijer and Stuart P. M. Roberts and Menno Reemer and Ralf Ohlem{\"u}ller and Mike Edwards and Theo M.J. Peeters and Andr{\'e} P. Schaffers and Simon G. Potts and R. Kleukers and C. D. Thomas and Josef Settele and William E. Kunin},
  journal={Science},
  year={2006},
  volume={313},
  pages={351 - 354}
}
Despite widespread concern about declines in pollination services, little is known about the patterns of change in most pollinator assemblages. By studying bee and hoverfly assemblages in Britain and the Netherlands, we found evidence of declines (pre-versus post-1980) in local bee diversity in both countries; however, divergent trends were observed in hoverflies. Depending on the assemblage and location, pollinator declines were most frequent in habitat and flower specialists, in univoltine… 
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References

SHOWING 1-10 OF 44 REFERENCES
Tolerance of pollination networks to species extinctions
TLDR
Tolerance in pollination networks contrasts with catastrophic declines reported from standard food webs, and the most–linked pollinators were bumble–bees and some solitary bees, which should receive special attention in efforts to conserve temperate pollination systems.
Functional Diversity of Plant–Pollinator Interaction Webs Enhances the Persistence of Plant Communities
TLDR
After two years the plant communities pollinated by the most functionally diverse pollinator assemblage contained about 50% more plant species than did plant communitiespollinated by less-diverse pollination assemblages, suggesting the functional diversity of pollination networks may be critical to ecosystem sustainability.
Rapid responses of British butterflies to opposing forces of climate and habitat change
TLDR
The dual forces of habitat modification and climate change are likely to cause specialists to decline, leaving biological communities with reduced numbers of species and dominated by mobile and widespread habitat generalists.
Comparative Losses of British Butterflies, Birds, and Plants and the Global Extinction Crisis
TLDR
A comparison at the national scale of population and regional extinctions of birds, butterflies, and vascular plants from Britain in recent decades is presented, strengthening the hypothesis that the natural world is experiencing the sixth major extinction event in its history.
Size constraints and flower abundance determine the number of interactions in a plant /flower visitor web
TLDR
This study tested whether flower size parameters set constraints on the morphology of the potential nectar feeding visitors and thus determine the number of visitor species, and hypothesized that the stronger size constraints and the smaller flower abundance, the smaller the numberof visitor species will be.
The Future of Biodiversity
TLDR
Estimates of future extinctions are hampered by the authors' limited knowledge of which areas are rich in endemics, and regions rich in species found only within them (endemics) dominate the global patterns of extinction.
Biotic Control over the Functioning of Ecosystems
Changes in the abundance of species — especially those that influence water and nutrient dynamics, trophic interactions, or disturbance regime — affect the structure and functioning of ecosystems.
Global Consequences of Land Use
TLDR
Global croplands, pastures, plantations, and urban areas have expanded in recent decades, accompanied by large increases in energy, water, and fertilizer consumption, along with considerable losses of biodiversity.
Extinction risk from climate change
TLDR
Estimates of extinction risks for sample regions that cover some 20% of the Earth's terrestrial surface show the importance of rapid implementation of technologies to decrease greenhouse gas emissions and strategies for carbon sequestration.
A globally coherent fingerprint of climate change impacts across natural systems
TLDR
A diagnostic fingerprint of temporal and spatial ‘sign-switching’ responses uniquely predicted by twentieth century climate trends is defined and generates ‘very high confidence’ (as laid down by the IPCC) that climate change is already affecting living systems.
...
...