What makes a good pollinator? Abundant and specialized insects with long flight periods transport the most strawberry pollen

Despite the importance of insect pollination to produce marketable fruits, insect pollination management is limited by insufficient knowledge about key crop pollinator species. This lack of knowledge is due in part to: 1) the extensive labour involved in collecting direct observations of pollen-transport, 2) the variability of insect assemblages over space and time, and 3) the possibility that pollinators may need access to wild plants as well as crop floral resources.
We address these problems using strawberry in the UK as a case study. First, we compare two proxies for estimating pollinator importance: flower visits and pollen transport. Pollen-transport data might provide a closer approximation of pollination service, but visitation data are less time-consuming to collect. Second, we identify insect parameters that are associated with high importance as pollinators, estimated using each of the proxies above. Third, we estimated insects' use of wild plants as well as the strawberry c..., Data was collected in June 2009 in three different farms in Somerset, UK. 
SPECIFICATIONS OF METHODS:
Insects were collected within transects using a hand net.
Plant species were identified in the field while insect species were identified by Taxonomy experts (see paper).
Bumblebee queens were identified in the field and released. 
Information on inter-tegument distance was taken from:

Baldock, K.C., Goddard, M.A., Hicks, D.M., Kunin, W.E., Mitschunas, N., Morse, H., Osgathorpe, L.M., Potts, S.G., Robertson, K.M., Scott, A.V., Staniczenko, P.P., Stone, G.N., Vaughan, I.P. & Memmott, J. (2019) A systems approach reveals urban pollinator hotspots and conservation opportunities. Nature Ecology and Evolution 3, 363–373, 10.1038/s41559-018-0769-y.

Hackett, T.D., Sauve, A.M.C., Davies, N., Montoya, D., Tylianakis, J.M. & Memmott, J. (2019) Re-shaping our understanding of species’ roles in landscape-scale networks. Ecology Letters 22, 1367–1377,44010.1111/ele.13292.
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