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Fire frequency plays some role in Brazilian pepper establishment, with areas of frequent fires displaying lower abundances of the plant in contrast to areas not regularly burned. A recent model found that a 4-year fire-return interval would eradicate an initial 100 pepper female population within 25 years. [ 22 ]
The United States Forest Service (USFS) is an agency within the U.S. Department of Agriculture that administers the nation's 154 national forests and 20 national grasslands covering 193 million acres (780,000 km 2) of land. [5]
Gifford Pinchot (1865–1946) – first chief of the United States Forest Service and proponent of the Wise Use Movement Carl A. Schenck (1868–1955) – responsible for incorporating German scientific management techniques into American forest management, and founder of Biltmore Forest School , the first forestry school in the United States
The United States Forest Service uses the same three types, but sometimes refers to the third type as assisted species migration. [33] In 2018 the U.S. Forest Service published a longer policy document, which listed and defined the three types this way: [34]
Mark wouldn't finish planting until 11 o'clock, while Ross stayed up past midnight doing office work. And they weren't alone. Down the road, another farmer was planting his field under the full moon.
This image or file is a work of a United States Department of Commerce employee, taken or made as part of that person's official duties. As a work of the U.S. federal government , the image is in the public domain .
Map of national forests and national grasslands of the United States. The United States has 154 protected areas known as national forests, covering 188,336,179 acres (762,169 km 2; 294,275 sq mi). [1] National forests are managed by the U.S. Forest Service, an agency of the U.S. Department of Agriculture. [2]
In 1995, the Southern and Southeastern Forest Experiment Stations merged to form the Southern Research Station with headquarters in Asheville, NC. [7] Research was expanded into new fields to address "...how climate change, human population growth, invasive plants, pathogens, and fire affect the provision of timber, wildlife, clean air and water, and recreation, as well as other ecosystem ...