1/13/2024 0 Comments Pine forest![]() ![]() ![]() ![]() Major native grasses and grass-like plants that create the grassy floor of many ponderosa pine woodlands include: pine grass ( Calamogrostis candensis), elk sedge ( Carex geyeri), Idaho fescue ( Festuca idahoensis), bluebunch wheatgrass ( Elymus spicatus), and blue grama ( Bouteloua gracilis).Ī large array of forbs are also present in the understory of ponderosa pine woodlands, though the forbs present vary significantly from region to region. Oreophilus), bearberry ( Arctostaphylos uva-ursi), antelope bitterbrush ( Purshia tridentana), woods rose ( Rosa woodsii), dearbrush ( Ceanothus integerrimus), and Gambels oak ( Quercus gambelii). ![]() These important trees include: Douglas fir ( Pseudotsuga menziesii), grand fir ( Abies grandis), western redcedar ( Thuja plicata), quaking aspen ( Populus tremuloides), and western juniper ( Juniperus occidentale).Ĭommon understory shrubs throughout the ponderosa pine woodlands include: mallow ninebark ( Physocarpus malvaceus), snowberry ( Symphoricarpos albus and S. Several common western trees occur as co-dominants with ponderosa pine in specific regions of the ponderosa pine woodlands. Arizona pine or Arizona ponderosa pine ( Pinus arizonica) is a closely related species of pine that was at one time a sub-species of ponderosa pine and is the dominant tree in much of the southwestern extent of ponderosa pine woodlands. ponderosa) and Rocky Mountain ponderosa pine ( Pinus ponderosa var. There are two sub-species of ponderosa pine: Pacific ponderosa pine ( Pinus ponderosa var. Over its entire range, the ponderosa pine ecosystem covers about 15 million hectares (27 million acres).Īs the name suggests, the ponderosa pine tree ( Pinus ponderosa) is the prevalent and common feature of all ponderosa pine woodlands, and it is also one of the most widely distributed plants in North America. In the southern states and drier regions, they often form the classic wide open grassy ponderosa savannas. In these conditions, the ponderosa pine communities often dominate the more xeric south-facing slopes. In moist forests at northern latitudes, the ponderosa pine forest is a seral or subordinate type in forests dominated largely by Douglas fir ( Pseudotsuga menziesii) and other conifers. The ponderosa pine woodlands are not uniform throughout their range. Over its entire range, the ponderosa pine ecosystem covers about 15 million hectares (27 million acres). In the southern states and drier regions, the often forms the classic wide open grassy ponderosa savannas. In these moist forests, the ponderosa pine communities often dominates the more xeric south facing slopes. In moist forests, at northern latitudes, the ponderosa pine forest is a seral or subordinate type in forests dominated largely by Douglas fir ( Pseudotsuga menziesii), and other conifers. The Ponderosa Pine Woodlands are not uniform throughout their range. These zones of ponderosa pine woodlands vary from 8 to 40 km (5 to 25 mi) wide and from 1,515 m to 2,900 m (500’ to 9500’ feet) in elevation. Theses pine savannahs occur in belts along the Sierra Nevada and Cascade Mountains in the west, in several areas throughout the Rocky Mountains, in the Laramie and Bighorn Mountains of Wyoming and in the Black hills of South Dakota. These western landscapes occur along the lower elevation of mountains extending from the Rocky Mountains in Canada to the Sierra Madre of Mexico. The ponderosa pine woodlands are savannah-like ecosystems characterized by widely spaced ponderosa pine trees with an understory of grasses and shrubs. Ponderosa pine ( Pinus ponderosa) is the most widely distributed pine in North America and dominates many forested communities that cover vast areas in the West. ![]()
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