Displaying 21 - 30 of 49
Carcaillet, Bergman, Delorme, Hornberg, Zackrisson
Knowledge of past fire regimes is crucial for understanding the changes in fire frequency that are likely to occur during the coming decades as a result of global warming and land-use change. This is a key issue for the sustainable management of…
Type: Document
Year: 2007
Franz, Quitmyer
Specimens of fossil gopher tortoises (Gopherus) were collected from five late Pliocene, two early Pleistocene, five middle Pleistocene, and 52 late Pleistocene sites in 18 counties in Florida, one county in Georgia, three in South Carolina, and one…
Type: Document
Year: 2005
Jutnry, Stahle
Forests in the Ozarks are ancient: the dominance and density of their various arboreal and herbaceous species have fluctuated over time in relation to climatic change and cultural influences. This study examines the nature of the pre-European forest…
Type: Document
Year: 2004
Naveh, Carmel
The early evolution of the cultural Mediterranean landscape in Israel, with special reference to Mt. Carmel, is described with a holistic landscape-ecological systems approach as the coevolution of the paleolithic food gatherer-hunter and his…
Type: Document
Year: 2004
Hirsch, Kafka, Todd
During the next few decades, a considerable portion of the productive boreal forest in Canada will be harvested and there is an excellent opportunity to use forest management activities (e.g., harvesting, regeneration, stand tending) to alter the…
Type: Document
Year: 2004
Hessburg, Agee
Fire was arguably the most important forest and rangeland disturbance process in the Inland Northwest United States for millennia. Prior to the Lewis and Clark expedition, fire regimes ranged from high severity with return intervals of one to five…
Type: Document
Year: 2003
Cayless, Tipping
Pollen, microscopic charcoal and peat humification analyses were applied to radiocarbon-dated peat cores to examine environmental change before and after the mid-Holocene transition from hunter-gatherer (Mesolithic) to agricultural (Neolithic)…
Type: Document
Year: 2002
Benedict
Shallow soil cores from 56 localities along the crest of the Colorado Front Range were processed by water flotation and wet sieving, then examined for wood charcoal and charred conifer-needle fragments. Charred particles were largest and most…
Type: Document
Year: 2002
Motzkin, Foster
Aim This study evaluates the long-term history of grassland, heathland and shrubland communities that are high priorities for conservation in the north-eastern US and support numerous globally rare species. Such an historical perspective is…
Type: Document
Year: 2002
Wright, Stewart, Swain, Shreve
From the text...'The Department of Defense, as stewards of military lands, considers cultural resource protection a part of its central mission, 'the defense of the United States - its people, its land, and its heritage.' At Eglin Air Force Base,…
Type: Document
Year: 2001