The present study investigated the effects of farmland management and environmental factors at local and landscape scales on bees in Central Hungary. Bees were sampled in winter cereal fields that varied in the amount of applied fertilizer and insecticide use. Insecticide use had a significant negative effect on total and small bee species richness and on large bee abundance.
Source:
Anikó Kovács-Hostyánszki, Péter Batáry, András Báldi (2011) Agricultural and Forest Entomology 13:59–66
http://onlinelibrary.wiley.com/doi/10.1111/j.1461-9563.2010.00498.x/full
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