Skip to main content

Displaying 1 - 9 of 9

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

Leonard
Reports on a survey conducted by archaeologists on sites impacted by the Rodeo-Chediski wildfire in Arizona. Information on the archaeological sites within the fire's perimeter range; Details on the threat posed by wildfires to archaeological sites…
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

Keeley
Aim Native American burning impacts on California shrubland dominated landscapes are evaluated relative to the natural lightning fire potential for affecting landscape patterns. Location Focus was on the coastal ranges of central and southern…
Type: Document
Year: 2002

Keeley
Aim: Native American burning impacts on California shrubland dominated landscapes are evaluated relative to the natural lightning fire potential for affecting landscape patterns. Location: Focus was on the coastal ranges of central and southern…
Type: Document
Year: 2002

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

Ritchie
Post-glacial Vegetation of Canada brings together all the available information about the complex history of vegetational and environmental change in Canada since the last Ice Age. As the lands began to emerge from under the ice, they provided a…
Type: Document
Year: 1987