. Distribution of mammals in Colorado. Mammals. 320 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3. LEGEND LZZI Upper Sonoran ESU Transition CZ3 Canadian 11 Hudsonian â â Alpine 0 1 . 20 40 Miles 1 1 1 <%p Fig. 118. Life-zones of Colorado (slightly modified after Cary, 1911). The Canadian Zone in Colorado comprises the heavy forests of middle elevations, charac- terized by such species as Populus tremuloides (quaking aspen), Firms contorta (lodgepole pine), and the heaviest stands of Picea engel- mannii (Engelmann spruce). In addition, the open grasslands of South Park and the rolling sagebrush
. Distribution of mammals in Colorado. Mammals. 320 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3. LEGEND LZZI Upper Sonoran ESU Transition CZ3 Canadian 11 Hudsonian â â Alpine 0 1 . 20 40 Miles 1 1 1 <%p Fig. 118. Life-zones of Colorado (slightly modified after Cary, 1911). The Canadian Zone in Colorado comprises the heavy forests of middle elevations, charac- terized by such species as Populus tremuloides (quaking aspen), Firms contorta (lodgepole pine), and the heaviest stands of Picea engel- mannii (Engelmann spruce). In addition, the open grasslands of South Park and the rolling sagebrush lands of Middle Park are mapped as parts of the Canadian Zone. The Hudsonian Zone is the highest for- ested belt. Characteristic species of trees in- clude Picea engelmannii, Abies lasiocarpa (subalpinefir), and locally, Pinus flexilis (lim- ber pine) and P. aristata (bristlecone pine). The upper limit of the Hudsonian Zone is the tree-line. The Hudsonian was characterized by Cary (op. cit.:45) as a transitional area, composed of elements of the Alpine and Ca- nadian zones. The so-called "Arctic-Alpine Zone" com- prises all areas above tree-line. The fist of woody plants is dominated by dwarf species of Salix. In more exposed situations, ground- cover is largely of low or acaulescent herbs, mosses, and lichens. Approximate vertical limits of life-zones in Colorado, following Cary (op. cit.:14), are in- dicated in table 24. Distribution of 118 species of Coloradan mammals according to life-zones is given in table 25. The fist excludes three species of documented, but occasional occurrence in Colorado (Tadarida brasiliensis, Tadarida macrotis, Alces alces). Cary (op. cit.) treated 107 species of mammals, according to present synonymy. The assignment of species to life- zones herein follows Cary except where a species was not treated by him. This analysis. Please note that these images are extracted from scanned page images that may have been digitally enhanced for rea
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectmammals
