Ray Tissues as an Indirect Measure of Relative Sap-sugar Concentration in Sugar Maple
Ray Tissues as an Indirect Measure of Relative Sap-sugar Concentration in Sugar Maple

Author: Peter W. Garrett

Publisher:

Published: 1989

Total Pages: 12

ISBN-13:

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S2Attempts to correlate ray tissue as a percentage of total wood volume with sap sugar concentrations of sugar maple progenies were unsuccessful. These results raise doubts about our ability to use a relatively constant value such as ray-tissue volume in a selection program designed to increase the sap-sugar concentration of sugar maple seedlings. S3.

Responses of Northern U.S. Forests to Environmental Change
Responses of Northern U.S. Forests to Environmental Change

Author: Robert A. Mickler

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 634

ISBN-13: 1461212561

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Five years of research carried out by the U.S. Department of Agriculture Forest Services' Northern Global Change Program, contributing to our understanding of the effects of multiples stresses on forest ecosystems over multiple spatial and temporal scales. At the physiological level, reports explore changes in growth and biomass, species composition, and wildlife habitat; at the landscape scale, the abundance distribution, and dynamics of species, populations, and communities are addressed. Chapters include studies of nutrient depletion, climate and atmospheric deposition, carbon and nitrogen cycling, insect and disease outbreaks, biotic feedbacks with the atmosphere, interacting effects of multiple stresses, and modeling the regional effects of global change. The book provides sound ecological information for policymakers and land-use planners as well as for researchers in ecology, forestry, atmospheric science, soil science and biogeochemistry.

West Virginia Yellow-poplar Lumber Defect Database
West Virginia Yellow-poplar Lumber Defect Database

Author: Lawrence E. Osborn

Publisher:

Published: 1992

Total Pages: 688

ISBN-13:

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S2In West Virginia, yellow-poplar (Liriodendron tulipifera) is abundant and is a prime candidate for increased utilization in a variety of manufacturing industries. Computer simulations are a cost-effective tool for estimating potential cutting yields from lumber. They can be used to promote increased use of yellow-poplar in the furniture, cabinet, and architectural woodworking industries and may also lead to increased utilization of the lower grades of lumber. This paper describes the data collection methods and the format of the new West Virginia yellow-poplar lumber defect database that was developed for use with computer simulation programs. The database contains descriptions of 627 boards, totaling approximately 3,800 board feet, collected in West Virginia for grades FAS, FASIF, No. 1 Common, No. 2A Common, and No. 28 Common.S3.

Survival and Growth of White Ash Families and Provenances 15 Years After Establishment in West Virginia
Survival and Growth of White Ash Families and Provenances 15 Years After Establishment in West Virginia

Author: Thomas M. Schuler

Publisher:

Published: 1994

Total Pages: 12

ISBN-13:

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The survival, growth, and stem form of 45 white ash (Fraxinus americana L.) families nested within 22 provenances were evaluated 1 5 years after establishment in North Central West Virginia. Geographic family origins encompassed a wide area in the eastern and central United States, including locations from Maine in the North to Mississippi in the South to Nebraska in the West. Significant differences were identified among provenances for survival, stem form, total height, and stem diameter and among families within provenances for stem form and total height. Latitude was a significant indicator of provenance performance with performance declining north and south of the plantation latitude. Performance gains may be realized by using proper provenances then identifying superior families within these provenances for white ash artificial regeneration activities.