Policy Analysis & Science Assistance
The Des Moines Lobe of central Iowa has undergone drastic land-use changes over the last two centuries, with 90% of the state’s wetlands converted primarily by agricultural practices and urban development. The introduction of tile drainage to improve land for agriculture facilitated this conversion and still contributes to the productivity of this agricultural landscape. Consequently, natural wetland habitat has become rare and fragmented, affecting species with limited mobility, such as amphibians. Amphibians are an important component of these wetland systems where they provide food for other animals and eat copious amounts of insects. However, many amphibian species are at risk world-wide and some are at risk in...