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The current oak–hickory forest includes the former range of the oak–chestnut forest region, which encompassed the northeast portion of the current oak–hickory range. When the American chestnut population succumbed to invasive fungal blight in the early 20th century, those forests shifted to an oak and hickory dominated ecosystem.
They are fast growing and are relatively short-lived; stands will begin to deteriorate after 60–70 years, while individuals can live up to 100 years. They often constitute early successional species of their landscapes. Roots are shallow and wide spreading; lateral root growth in a forest may be as far as 60 feet (18 m). [4]
D Forests with citations to the three books in the This Land series by Robert H. Mohlenbrock can be found in the section of the cited book that corresponds to that forest. Additional information about a particular forest can be found in this series and at each forest's website. [8] [12] [33]
Forests in the United States can be categorized into three main forest biomes, they are boreal, temperate, or sub-tropical based on the location and climate of the forest. Each of these biomes faces various threats of deforestation , urban development, [ 2 ] soil compaction , species extinction, unmanaged recreational use, invasive species , or ...
In more recent time, however, these open areas have been abandoned and are slowly returning to forest. Of the many plant species that inhabit the Eastern Temperate Forests today, those of the oak (Quercus), beech (Fagus), maple (Acer), basswood (Tilia), and pine (Pinus) genera are the most characteristic and defining of this ecoregion. [8]
Austin T. Blakeslee Natural Area, Monroe County, Pennsylvania. The northern hardwood forest is a general type of North American forest ecosystem found over much of southeastern and south-central Canada, Ontario, and Quebec, extending south into the United States in northern New England, New York, and Pennsylvania, and west along the Great Lakes to Minnesota and western Ontario.
The coniferous forest goes by many names, including: Boreal forest, fir-spruce forest, the North Woods, and the taiga. It is noted in New England for its "harsh" conditions such as cold, subarctic temperatures, a short growing period, sandy-gravely acidic soil, and a high rate of leeching of nutrients out of the soil.
In the southeast, longleaf pine dominated the grassy woodlands and open-floored forests which once covered 92,000,000 acres (370,000 km 2) from Virginia to Texas. These covered 36% of the region's land and 52% of the upland areas. Of this, less than 1% of the unaltered forest still stands. [9]