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Full-Text Articles in Physical Sciences and Mathematics
Plant Community Diversity After Herbicide Control Of Spotted Knapweed, United States Department Of Agriculture, Forest Service
Plant Community Diversity After Herbicide Control Of Spotted Knapweed, United States Department Of Agriculture, Forest Service
Herbicides and Pesticides
Herbicides were applied to four west-central Montana sites with light to moderate spotted knapweed (Centaurea maculosa Lam.) infestations. Althought knapweed suppression was high, 2 years after the spraying the communities were not converted to grass monocultures. No large declines in plant diversity were caused by the herbicides, and small depressions were probably transitory. By the third year, diversity had increased.
Cultural Diversity & Adaptation: The Archaic, Anasazi, & Navajo Occupation Of The Upper San Juan Basin, United States Bureau Of Land Management
Cultural Diversity & Adaptation: The Archaic, Anasazi, & Navajo Occupation Of The Upper San Juan Basin, United States Bureau Of Land Management
All U.S. Government Documents (Utah Regional Depository)
Recent work in the upper San Juan Basin has more than doubled the number of known, as well as excavated, sites. Without exception, this work has modified and expanded long-held views of the PaleoIndian, Archaic, Anasazi, and Navajo people who inhabited the area. The papers presented in this volume reflect these changes and represent the cutting edge of southwestern archaeology.