Multiple ecosystems in Gallatin National Forest
There are 62 named ecological systems of Montana described in the Montana Field Guides.[ 1] [ 2]
Definition
An ecosystem is a biological environment consisting of all the organisms living in a particular area, as well as all the nonliving, physical components of the environment with which the organisms interact, such as air, soil, water and sunlight.[ 3] It is all the organisms in a given area, along with the nonliving (abiotic) factors with which they interact; a biological community and its physical environment.[ 3]
As stated in an article from Montana State University in its Institute on Ecosystems: "An ecosystem can be small, such as the area under a pine tree or a single hot spring in Yellowstone National Park, or it can be large, such as the Rocky Mountains, the rainforest or the Antarctic Ocean."[ 4]
The Montana Fish, Wildlife and Parks called the state's main ecosystems montane forest, intermountain grassland, plains grassland and shrub grassland.[ 4] The Montana Agricultural Experiment Station categorized Montana's ecosystems based on the different rangelands and recognized 22 different ecosystems; the Montana Natural Heritage Program recognizes 62 for the entire state.[ 4]
Forest and woodland
Northern Rocky Mountain Mesic Montane Mixed Conifer Forest[ 5]
Rocky Mountain Subalpine Mesic Spruce-Fir Forest and Woodland[ 6]
Northwestern Great Plains - Black Hills Ponderosa Pine Woodland and Savanna[ 7]
Northern Rocky Mountain Dry-Mesic Montane Mixed Conifer Forest[ 8]
Rocky Mountain Foothill Limber Pine - Juniper Woodland[ 9]
Northern Rocky Mountain Foothill Conifer Wooded Steppe[ 10]
Rocky Mountain Lodgepole Pine Forest[ 11]
Middle Rocky Mountain Montane Douglas-Fir Forest and Woodland[ 12]
Northern Rocky Mountain Ponderosa Pine Woodland and Savanna[ 13]
Rocky Mountain Poor Site Lodgepole Pine Forest[ 14]
Rocky Mountain Subalpine Dry-Mesic Spruce-Fir Forest and Woodland[ 15]
Northern Rocky Mountain Subalpine Woodland and Parkland[ 16]
Rocky Mountain Aspen Forest and Woodland[ 17]
Western Great Plains Wooded Draw and Ravine[ 18]
Inter-Mountain Basins Mountain Mahogany Woodland and Shrubland[ 19]
Inter-Mountain Basins Aspen Mixed Conifer Forest-Woodland[ 20]
Alpine
Rocky Mountain Alpine Dwarf-Shrubland[ 21]
Rocky Mountain Alpine Turf[ 22]
Rocky Mountain Alpine Bedrock and Scree[ 23]
Rocky Mountain Alpine Fell-Field[ 24]
North American Alpine Ice Field[ 25]
Shrubland, steppe and savanna
Northwestern Great Plains Shrubland[ 26]
Rocky Mountain Lower Montane-Foothill Shrubland[ 27]
Northern Rocky Mountain Montane-Foothill Deciduous Shrubland[ 28]
Northern Rocky Mountain Subalpine Deciduous Shrubland[ 29]
Inter-Mountain Basins Big Sagebrush Steppe[ 30]
Inter-Mountain Basins Montane Sagebrush Steppe[ 31]
Inter-Mountain Basins Big Sagebrush Shrubland[ 32]
Wyoming Basins Dwarf Sagebrush Shrubland and Steppe[ 33]
Inter-Mountain Basins Mat Saltbush Shrubland[ 34]
Inter-Mountain Basins Mixed Salt Desert Scrub[ 35]
Grassland
Northwestern Great Plains Mixedgrass Prairie[ 36]
Western Great Plains Sand Prairie[ 37]
Northern Rocky Mountain Lower Montane, Foothill and Valley Grassland[ 38]
Rocky Mountain Subalpine-Montane Mesic Meadow[ 39]
Northern Rocky Mountain Subalpine-Upper Montane Grassland[ 40]
Sparse and barren
Inter-Mountain Basins Active and Stabilized Dune[ 41]
Western Great Plains Badlands[ 42]
Inter-Mountain Basins Shale Badland[ 43]
Western Great Plains Cliff and Outcrop[ 44]
Rocky Mountain Cliff, Canyon and Massive Bedrock[ 45]
Inter-Mountain Basins Cliff and Canyon[ 46]
Open-water and riparian
Rocky Mountain Subalpine-Montane Fen[ 47]
Western Great Plains Closed Depressional Wetland[ 48]
Western Great Plains Open Freshwater Depression Wetland[ 49]
Great Plains Prairie Pothole[ 50]
Western Great Plains Saline Depression Wetland[ 51]
Northern Rocky Mountain Wooded Vernal Pool[ 52]
Inter-Mountain Basins Greasewood Flat[ 53]
Northwestern Great Plains Floodplain[ 54]
Northwestern Great Plains Riparian[ 55]
Northern Rocky Mountain Lower Montane Riparian Woodland and Shrubland[ 56]
Rocky Mountain Lower Montane-Foothill Riparian Woodland and Shrubland[ 57]
Rocky Mountain Subalpine-Montane Riparian Shrubland[ 58]
Rocky Mountain Subalpine-Montane Riparian Woodland[ 59]
Northern Rocky Mountain Conifer Swamp[ 60]
North American Arid West[ 61]
Geysers and Hot Springs[ 62]
Open Water[ 63]
Rocky Mountain Alpine-Montane Wet Meadow[ 64]
Further reading
Comer, P.; Faber-Langendoen, D.; Evans, R.; Gawler, S.; Josse, C.; Kittel, G.; Menard, S.; Pyne, M.; Reid, M.; Schulz, K.; Snow, K.; Teague, J. (June 2003). Ecological Systems of the United States: A Working Classification of U.S. Terrestrial Systems (PDF) (Report). Arlington, Virginia: NatureServe .
Noss, Reed F.; LaRoe, Edward T. III; Scott, J. Michael (1995). Endangered Ecosystems of the United States: A Preliminary Assessment of Loss and Degradation (Report). National Biological Service. Archived from the original on 2008-05-09. Retrieved 2011-06-14 .
Management of riparian and wetland forested ecosystems in Montana: fourth annual Montana Riparian Association Workshop, September 5-7, 1990 . Missoula, Montana: School of Forestry, University of Montana. 1990.
Schmitz, Oswald J. (2010). Resolving Ecosystem Complexity . Monographs in population Biology - 47. Princeton University Press. ISBN 978-1-4008-3417-4 .
See also
Notes