. Birds of the St. Croix River Valley, Minnesota and Wisconsin. Birds Saint Croix Valley (Minn; and Wis; ). 6 NORTH AMERICAN FAUNA 73. Fig. 2. Major physiographic regions of the St. Croix River Valley. major divisions by State and the reasons for the combining of systems that I had to consider for interpretation. The most usable division system for Minnesota was developed by Kratz and Jensen (1977). They developed a system based on both major vegeta- tional and geomorphic provinces and included 17 distinct Ecological-Geo- morphic divisions. Four of these divisions are included in the Minnesota
. Birds of the St. Croix River Valley, Minnesota and Wisconsin. Birds Saint Croix Valley (Minn; and Wis; ). 6 NORTH AMERICAN FAUNA 73. Fig. 2. Major physiographic regions of the St. Croix River Valley. major divisions by State and the reasons for the combining of systems that I had to consider for interpretation. The most usable division system for Minnesota was developed by Kratz and Jensen (1977). They developed a system based on both major vegeta- tional and geomorphic provinces and included 17 distinct Ecological-Geo- morphic divisions. Four of these divisions are included in the Minnesota counties. A brief description of each follows. Southern Oak Barrens Section.—H\as section includes a large region of southeastern Minnesota generally referred to as the Driftless Area, which was not covered by ice during glacial periods. In the Valley, about 80% of Washington County is included in this section. Topography is characterized by highly dissected limestone and sandstone hills adjacent to the St. Croix River. Away from the river, large expanses of glacial outwash and kettle and knob topography predominate. Vegetation consists of a transition between. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Faanes, Craig A. Washington, D. C. : Fish and Wildlife Service
Size: 1563px × 1598px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcol, bookcollectionbiodiversity, booksubject
