Montana North America

Shasta National Forest: Biotic Communities and Disturbance Regime

Shasta National Forest's Biotic Communities Western North America Alpine Tundra Conditions Western North America Alpine Tundra (WNA Alpine Tundra) ecosystems are found on mountain ranges along the west coast of North America, including the mid-elevations on Mount Shasta (Billings & Meidinger 2015). This ecosystem is characterized by short growing seasons and long winters with high snowpack. Soils in this ecosystem tend to be shallow, rocky, low in organics, and well drained (Billings & Meidinger 2015) . Plant Communities Plants commonly found in the WNA Alpine Tundra ecosystem on Mount Shasta include wildflowers in the genus Eriogonum , like Sulphur Buckwheat ( Eriogonum umbellatum ), and some trees at lower elevations such as Lodgepole Pine ( Pinus contorta ) (Billings & Meidinger 2015; Anderson 2003; United States Department of Agriculture (USDA) & United States Forest Service (USFS) 2016; USDA & USFS 2014) . Sulphur Buckwheat. Source . Sulphur B...

Canadian Shield: Biotic Communities and Disturbance Regimes

Biotic Communities and Disturbance Regimes in the Canadian Shield Biotic Communities Baffin Island T he vegetation of the Canadian Arctic is the tundra. Plants species in the tundra are very limited and the length of their growing season is short. Cotton grass, sedge, dwarf heath, shrubs, mosses and lichens are the most common vegetation in the Canadian Arctic (Aun et al. 2002). T hree types of ecosystems are contained in the Canadian Arctic: the Arctic Cordillera, Northern Arctic and Southern Arctic, with Baffin Island being in the Northern Arctic. Because of its harsh climate, high winds and shallow soils, the vegetation of the Northern Arctic is sparse and dwarfed (Aun et al. 2002). Life in the polar regions is far from easy. Winter temperatures can reach deep into the negatives, and the winter night can last for months (WWF). But these landscapes which are lacking in vegetation are home to a rich diversity of wildlife, both on land and ...

Southern California: Biotic Communities and Disturbance Regimes

Long Beach, CA The plants native to this area are tolerant to drought conditions and increased salinity due to the Mediterranean climate of this area. Most of the plants found in this area are for gardens/landscaping in urban areas. Public areas must get their trees approved by the city council before it is to be planted (City of Long Beach 2017). As this is an area of dense urbanization, the terrestrial fauna in the area is slim. Outside of pets, there are common animals such as squirrels, opossums, birds, rats, coyotes etc. Lyonathamnus floribundus (Cataline Ironwood) (UFEI) (UFEI) Cataline ironwoods are successful in this area because they are drought resistance and tolerant to salty soils (UFEI). They are most likely out competed by other species in other areas in terms of growth rate and height, so they stay within the western/central areas of California. Procyon lotor (raccoon) (Cabi 2021) (Cabi 2021) Raccoons are found almost anywh...

GEOG 3318 Project: Biogeographic Pattern

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