indicators of the statuses of amphibian populations and their potential for exposure to atrazine in four midwestern u.s. conservation areas.extensive corn production in the midwestern united states has physically eliminated or fragmented vast areas of historical amphibian habitat. midwestern corn farmers also apply large quantities of fertilizers and herbicides, which can cause direct and indirect effects on amphibians. limited field research regarding the statuses of midwestern amphibian populations near areas of corn production has left resource managers, conservation planners, and other stakeholders needing more information to im ...201425216249
call types of the rana pipiens complex in illinois.the presence of western, eastern, and northern call types of the rana pipiens complex in illinois supports evidence from the western united states that this complex can no longer be regarded as one species.19724537520
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