Displaying 201 - 210 of 277
LeQuesne, Villagran, Villa
Here we present fossil pollen and charcoal concentrations results from two stratigraphic columns from Isla Mocha (38°19'-38°25'S; 73°57'-73°52'W), Laguna Hermosa (350 m.a.s.l.) and Laguna Huairavos ( 125 m.a.s.l.). These results suggest that the…
Type: Document
Year: 1999
Stowe
The South Carolina Department of Natural Resources (DNR) acquires land in the state to protect rare species and ecosystems, and significant cultural and archaeological sites. These lands -- called heritage preserves (HPs) -- also provide outstanding…
Type: Document
Year: 1999
Hardy, Keane, Harrington
From the text...'The term restoration relates to activities required to reduce hazards from wildland fires and improve federal forest and grassland health to a condition that can be maintained through periodic disturbance. Restoration and…
Type: Document
Year: 1999
Hornberg, Ostlund, Zackrisson, Bergman
1. In northern Fennoscandia a rare forest type, characterized by Cladina species and Picea abies, occurs on dry productive sites outside the range of permafrost but close to the Scandes mountains. 2. We determined the history of vegetation…
Type: Document
Year: 1999
Hornberg, Ostlund, Zackrisson, Bergman
In northern Fennoscandia a rare forest type, characterized by Cladina [Cladonia] spp. (lichens) and Picea abies, occurs on dry productive sites outside the range of permafrost but close to the Scandes mountains. The history of vegetation development…
Type: Document
Year: 1999
Harpole, Lyman
Many mammalian species found today in Washington state experienced a dynamic biogeographic history during the Holocene epoch (last 10,000 years).The elk (Cervus elaphus) was one of those species. Seventy archacological sites in Washington west of…
Type: Document
Year: 1999
Bowman
One of the most complex and contentious issues in Australian ecology concerns the environmental impact of Aboriginal landscape burning. This issue is not only important for the development of a comprehensive understanding of the dynamics and…
Type: Document
Year: 1998
Bowles, McBride
Fire-maintained oak savannas on silt-loam soils essentially disappeared from midwestern North America soon after European settlement because of fire suppression and agriculture. As a result, there are no precise models for restoring this vegetation…
Type: Document
Year: 1998
Nsiah-Gyabaah
From the text... "This paper examines the pressures that lead to reduction of biodiversity especially the threat of wildfire to environmental resources, how indigenous people in Ghana protect vital environmental resources through culture, religion…
Type: Document
Year: 1997
Reeves, Cole, Savery
Managers of designated wilderness or conservation areas, especially those that are fire-dependent, often face a major dilemma. It is essential that fire perform its natural role of rejuvenating the ecosystem. Standards of environmental regulation,…
Type: Document
Year: 1997