Skip to main content
U.S. flag

An official website of the United States government

64 results found
Managing forested wetland landscapes for water quality improvement and productivity requires a detailed understanding of functional linkages between ecohydrological processes and management practices. Studies are being conducted at Center for Forested Wetlands Research (CFWR), USDA Forest Service…
Author(s): Devendra M. Amatya, Carl C. Trettin, R. Wayne Skaggs, Timothy J. Callahan, Ge Sun, Masato Miwa, John E. Parsons
Keywords: ecosystem, watershed, vegetation, hydroperiod, drainage, nutrients, models
Source: Written for presentation at the 2004 ASAE/CSAE Annual International Meeting Sponsored by ASAE/CSAE Fairmont Chateau Laurier, The Westin, Government Centre Ottawa, Ontario, Canada 1-4 August 2004. An ASAE/CSAE Meeting Presentation Paper Number: 042132
Year: 2004
For three to four years after logging, an all-aged pine-hardwoodforest in Central Louisiana appeared capable of supporting one deer on each 12 to 18 acres. Capability declined rapidly thereafter as overstory competition increased and preferred foods diminished. Within seven years after timber…
Author(s): Robert M. Blair, Louis E. Brunett
Keywords: White-tailed deer, loblolly-shortleaf pine, secondary succession, forage yield, forage quality, nutrients, deer enclosures
Source: Res. Pap. SO-136. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 11 p.
Year: 1977
Twigs were most nutritious and digestible during early growth in spring; they were high in fiber content and low in digestibility during summer, autumn, and winter. Evergreen leaves did not vary substantially in nutrient content and digestibility throughout the year. By contrast, leaves of…
Author(s): Henry L. Short, Robert M. Blair, E.A. Epps
Keywords: forage quality, wildlife foods, woody twigs, nutrients, ruminants, invivo microdigestion
Source: Res. Pap. SO-111. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 10 p.
Year: 1975
The future demands on forest lands are a concern because of reduced productivity, especially on inherently poor sites, sites with long-depleted soils, or those soils that bear repeated, intensive short rotations. Forests are also an important carbon sink and, when well managed, can make even more…
Author(s): Bryce J. Stokes, Felipe G. Sanchez, Emily A. Carter
Keywords: carbon, nutrients, site preparation, biomass
Source: Proceedings of IEA Bioenergy Task 18 Workshop Developing Systems for Integrating Bioenergy into Enviromentally Sustainable Forestry Sept. 1998
Year: 1998
This report reviews the scientific literature about the potential of common forest and grassland management to introduce contaminants of concern to human health into public drinking water sources.Effects of managing water, urbanization, ecreation, roads, timber, fire, pesticides, grazing, wildlife…
Author(s): George E. Dissmeyer, [Editor]
Keywords: Economics, nutrients, pathogens, sediments, source water assessments, toxic chemicals
Source: Gen. Tech. Rep. SRS-39. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 246 p.
Year: 2000
Ecological restoration using prescribed fire has been underway for 3 years in an uncut, old-growth longleaf pine (Pinus palustris) stand located in south Alabama. The longleaf pine ecosystem requires frequent (once every 1-10 years) surface fire to prevent succesion to later several stages. Before…
Author(s): J. Morgan Varner, John S. Kush, Ralph S. Meldahl
Keywords: ecological restoration, longleaf pine, mortality, nutrients, old-growth, Pinus palustris, prescribed fire, south Alabama
Source: In: Moser, W. Keith; Moser, Cynthia E., eds. Fire and forest ecology: innovative silviculture and vegetation management. Tall Timbers Fire Ecology Conference Proceedings, No. 21. Tallahassee, FL: Tall Timbers Research Station: 216-219
Year: 2000
Secondary plant succession and the accumulation of biomass and nutrients were documented at seven ruminant exclosures in Abies and Pseudotsuga forests variously disturbed by logging, burning, and grass seeding. Long-term (25 or more years) foraging by Rocky Mountain mule deer (Odocoileus…
Author(s): Robert A. Riggs, Arthur R. Tiedemann, John G. Cook, et al.
Keywords: Abies, biomass, Bos, Cervus, cycling, disturbance, ecosystem, fire, forest, herbivory, logging, nutrients, Odocoileus, Ovis, productivity, Pseudotsuga, seeding, shrubs, site, succession, understory
Source: Res. Pap. PNW-RP-527. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 77 p
Year: 2000
Includes 10 papers from a symposium organized to review what is know about the ecological principles that will govern the ultimate success or failure of all reclamation efforts on drastically disturbed lands. The papers cover four general areas: soil biological properties and nutrient cycling;…
Author(s): Jeanne C. Chambers, Gary L. Wade, [Editors]
Keywords: landscape ecology, mine spoil, plant succession, reclamation, soil fungi, nutrients, cycling, revegetation, disturbed land, habitats
Source: Gen. Tech. Rep. NE-164. Radnor, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 107 p.
Year: 1992
Prior to Anglo-European settlement, fire was a major ecological process influencing the structure, composition and productivity of shortgrass prairie ecosystems on the Great Plains. However during the past 125 years, the frequency and extent of grassland fire has dramatically declined as a result…
Author(s): Dale G. Brockway, Richard G. Gatewood, Randi B. Paris
Keywords: Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths, Buchloe dactyloides (Nutt.) Engelm, plant cover, species diversity, herbaceous biomass, litter, nutrients
Source: Journal of Environmental Management 65:135-152
Year: 2002
Effects of P, K, Ca, Mg, S, Co, and Mo fertilizers on growth and foliar nutrients of red alder seedlings potted in Grove, Bunker, and Wishkah forest soils were determined. Growth in Grove soil was stimulated most by P, Ca, and P + Ca + Mg + K + S. Growth in Bunker soil was improved only by P. In…
Author(s): M.A. Radwan
Keywords: Fertilizer effects, growth response, nutrients, red alder, seedling growth
Source: Res. Pap. PNW-RP-375. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 14 p
Year: 1987