Fig. 4From: Effects of mosquito control using the microbial agent Bacillus thuringiensis israelensis (Bti) on aquatic and terrestrial ecosystems: a systematic reviewNumber of included articles reporting on studies from different countries or US states. The greatest number of papers report studies from USA (32 articles), followed by France, Sweden, and Germany. The US states have been separated to achieve a similar level of spatial resolution and detail as for EuropeBack to article page