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Many agricultural water protection policies around the world recommend 5 to 50 m wide uncropped buffers around water bodies to protect wetlands from contamination by fertilizers and pesticides. In the April issue of Ecosphere, Sawatzky and Fahrig found that such wetland buffers do not effectively protect wetlands from contamination by agricultural contaminants, but conserving ~40% uncropped land within a 150–300 m radius of wetlands may alleviate such contamination.

Ecosphere