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Early detection and trend detection of invasive non-native plant species comprise two of the Sonoran Desert Network Inventory and Monitoring Program's vital signs. Baseline information on the presence, location, and abundance of invasive non-native plant species is necessary to accomplish two goals: (1) to identify which invasive non-native species are not yet present in the park (early detection monitoring); and (2) to map the spatial location, distribution, and abundance of those species that already occur in the park as the basis for future trend assessment.

On August 17, 1886, Capt. Moses Harris and the troops of Company M rode into Yellowstone to take over guardianship of America's first national park. Receiving orders thereupon that the company was staying indefinitely, Captain Harris ordered the construction of Camp Sheridan. Seeing no end in sight for this "temporary" duty, the US
War Department established Fort Yellowstone in 1891. For 32 years, ceremonial splendor of the US Army filled this era of Yellowstone with booming cannons at sunrise and sunset, crackling rifle-range practices, flashing saber drills, exacting military maneuvers,...

Caribou (Rangifer tarandus) are an integral part of the ecological and cultural fabric of northwest Alaska. Western Arctic Herd (WAH) caribou roam over this entire region, including all 5 Arctic Network Inventory and Monitoring Program (ARCN) National Park Units. Conservation of healthy caribou populations are specifically mentioned within the enabling legislation (Alaska National Interested Lands Conservation Act or ANILCA) of three of these Parks and is of critical concern to subsistence hunters within this region. Caribou are, by far, the most abundant large mammal in northwest Alaska and...