FIG. 1.

Map and spatial details of the study design. (A) State map of Wisconsin showing the locations of the northern (Trout Lake) region and the southern (Madison Lakes) region. (B and C) Maps of the northern Trout Lake region (B) and the southern Madison Lakes region (C) showing lakes, stream connections, and study basins. The numbers within each study lake correspond to the basins described in Tables 1, 3, and 4. (D) Detail of the study design with Trout Lake as an example. The relationship of basin level and station level samples is shown. Numbers correspond to basins, and the points labeled A, B, and C correspond to the station level samples. Station names in bold and italics (e.g., 24B) indicate primary stations at which environmental samples were collected.