Northeastern North American bee species information on population trends and ecosystem services delivered

<p>Regional-scale trend from Bartomeus et al. (2013) in relative abundance calculated over the period 1870-2011. Local-scale status from Burkle et al. (2013) shows extinction or persistence in Carleville, Illinois. Ecosystem Service Provider is classified in non-ESP (not ecosystem-service providers to the studied crops), ESP (occasionally ecosystem-service providers to the studied crops), and main ESP (among the species cumulatively responsible for 90% of the pollinator visitation to at least one of the studied crop) according to data from Garibaldi et al. (2013). See main article for references.</p>