Displaying 51 - 60 of 63
Van Pelt, Swetnam
[no description entered]
Type: Document
Year: 1990
Lissoway, Propper
Over the past 10 years considerable information has been gathered on the effects of fire and fire suppression activities on cultural resources in the Southwest. A review of this information is presented and recommendations are offered on how damage…
Type: Document
Year: 1990
[no description entered]
Type: Document
Year: 1989
Biswell
[no description entered]
Type: Document
Year: 1989
Patterson, Sassaman
[no description entered]
Type: Document
Year: 1988
Bonnicksen
[no description entered]
Type: Document
Year: 1988
Kauffman, Martin
Numerous studies, historical accounts and archaeological evidence suggest that the historical density and abundance of black oak (Quercus kelloggii Newb.) in mixed conifer forests was much greater than today. Reasons for the decline of this species…
Type: Document
Year: 1987
Roberts
[no description entered]
Type: Document
Year: 1985
Buckner
The meaning of 'natural' as a guideline for managing public forests is questioned. Evidence of a rapidly shifting flora over eastern North America in recent geologic time is presented along with historical evidence of the open character of the…
Type: Document
Year: 1983
Wilhelm
From the Conclusions ... 'Prior to becoming a national park, Shenandoah had gone through periods of indiscriminate logging, hunting, livestock grazing, and burning. Then the area entered the National Park System and shifted abruptly to a regime of…
Type: Document
Year: 1973