Guenat, S. ; Kunin, W.E.; Dougill, A.J.; Dallimer, M. (2018). Abundance of pollinators and diversity of bees in Ghana and the effect of urbanisation and management practices. NERC Environmental Information Data Centre. https://doi.org/10.5285/2e245944-ee5b-4612-b866-cafa3a129270
Data consists of abundance counts and diversity of pollinators collected in Ghana. Pollinators were sampled with pan-traps between August and November 2016 in 126 greenspaces spread over an urbanisation gradient and three management practices (amenity lands, farmed sites and informal greenspaces) around Sunyani and Techiman, Ghana. All insects were identified to order in the field. Samples were stored in 70% alcohol before being pinned for identification. Bees and wasps were pinned and differentiated with microscopy based on Goulet and Hubert (1993). Bees were subsequently identified with microscopy to morpho-species following Eardley, Kuhlmann and Pauly (2010).
Bee functional diversity was determined based on the literature through a selection of traits relevant for pollinators, namely habitat, pollen specialisation, nesting behaviour, body size (inter-tegula distance measured on all specimens with a caliper), tongue length and sociality.
Habitats were described by a visual estimation of the proportion of six habitat features in a 200m radius around the sampling site, namely unmanaged ground vegetation, regularly mown or grazed vegetation, shrub layer vegetation, tree layer vegetation, bare ground and concrete. We estimated the floral resources in a 1m circle around the pan-trap by (1) counting the flowering plant species richness, (2) estimating each species' flower head surface and (3) counting flower head abundance. Identification and analysis were carried out at the University of Leeds, 2017.
Other useful information regarding this dataset:
Eardley, C., Kuhlmann, M., Pauly, A. (2010). The bee genera and subgenera of sub-Saharan Africa. Belgian Development Cooperation.
Goulet, H. & Huber, J.T. (1993) Hymenoptera of the world: an identification guide to families. Agriculture Canada, Ottawa, Ontario (Canada).