Treesearch

Although there is strong evidence for hydraulic redistribution (HR) of soil water by trees, it is not known if common myconhizal networks (CMN) can facilitate HR from mature trees to seedlings under field conditions. Ponderosa pine (Pinus ponderosa) seedlings were planted into root-excluding 61-micron mesh barrier chambers buried in an old-growth pine forest. After 2 yr, several mature trees were cut and water enriched in D2O and acid fuchsin dye was applied to the stumps. Fine roots and mycorrhizal root tips of source trees became heavily dyed, indicating reverse sap flow in root xylem-tra...

Soils are an integral structural part of your woodland and the larger forest ecosystem. Important forest soil functions include: Providing water, nutrients, and physical support for the growth of trees and other forest plants Allowing an exchange of carbon dioxide, oxygen, and other gasses that affect root growth and soil organisms Providing a substrate for organisms linked with vital ecosystem processes Harboring root diseases and other pests Affecting water quantity and quality Thus, how you protect and manage forest soils affects your forest's short- and long-term productivity and the...

Soil disturbance from forest practices ranges from barely perceptible to very obvious, and from positive to nil to negative effects on forest productivity and 1 or hydrologic function. Currently, most public and private landholders and various other interested parties have different approaches to describing this soil disturbance. More uniformity is needed to describe, monitor, and report soil disturbance from forest practices. We describe required elements for attaining: (1) more uniform terms for describing soil disturbance; (2) cost-effective techniques for monitoring or assessing soil...

The 2003 Bear Butte and Booth (B&B) Fires burned much of the Mount Jefferson Wilderness in the Deschutes and Willamette National Forests, Oregon. A question for managers is how best to manage recreation in fire-affected areas in ways that minimize adverse impacts on visitor experiences and the recovering landscape. To help address this question, we used onsite surveys (n = 221) asking visitors in the Mount Jefferson Wilderness about their past use and postfire changes in use and their preferences for managing recreation after fires. Results indicated that recreation use declined after the...

Provides current information on lumber and plywood production and prices; employment in the forest industries; international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies; and other related items. Current data and downloadable Excel files are available online.

This report examines the capacity of natural resource agencies to generate scientific knowledge and information for use by resource managers in planning and decisionmaking. This exploratory study focused on recreation in the U.S. Department of Agriculture, Forest Service. A semistructured, open-ended interview guide elicited insights from 58 managers and 28 researchers about recreation issues, information exchange, and research management interactions. Data were coded and analyzed using Atlas.ti®, a qualitative analysis software program. Results indicate that recreation managers seek...

Tables summarize volume and values of United States trade in wood products from 1978 to 2005. Import and export data are shown for 21 commodities aggregated from over 1,700 wood products. Data were obtained from an earlier report by Chmelik and others and the U.S. Department of Commerce, Bureau of the Census. Trade in each commodity is delineated by trading partner and shipments through each of four regional aggregations of U.S. customs districts. Data show that the United States is a net importer of wood products and Canada is the dominant supplier.

Sold prices for national forest stumpage provide geographically specific price references for timber. This report presents sold price series for western national forests from 1984 through first 3 months of 2007. Selected trends in stumpage prices and sold volumes as well as issues related to species aggregation in the data are also discussed.

Privately owned forests provide many public benefits, including clean water and air, wildlife habitat, and recreational opportunities. By 2030, 44.2 million acres of rural private forest land across the conterminous United States are projected to experience substantial increases in residential development. As housing density increases, the public benefits provided by private forests can be permanently altered. We examine factors behind projected patterns of residential development and conversion of private forest land by 2030 in northwestern Washington, southern Maine, and northwestern...

We examine the use of woody residues, primarily from forest harvesting or wood products manufacturing operations (and to a limited degree from urban wood wastes), as a feedstock for direct-combustion bioenergy systems for electrical or thermal power applications. We examine opportunities for utilizing biomass for energy at several scales, with an emphasis on larger scale electrical power generation at stand-alone facilities, and on smaller scale facilities (thermal heating only) such as governmental, educational, or other institutional facilities. We then identify west-wide barriers that...