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Forestry

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Articles 91 - 120 of 157

Full-Text Articles in Forest Sciences

Assessing The Quantity And Quality Of Forested Resources In East Texas Using Remotely Sensed Data, Daniel Unger Jan 2003

Assessing The Quantity And Quality Of Forested Resources In East Texas Using Remotely Sensed Data, Daniel Unger

Faculty Publications

OBJECTIVES: Development of new or enhanced remote sensing methodologies for assessing the quantity of east Texas forests and their associated ecosystems. Development of new or enhanced remote sensing methodologies for assessing the quality of east Texas forests and their associated ecosystems. Application of temporal analysis to assess the change in the quantity/quality of east Texas forests and their associated ecosystems over time.


Site Index Conversion Equations For Mixed Trembling Aspen And White Spruce Stands In Northern British Columbia, Gordon Nigh Jan 2002

Site Index Conversion Equations For Mixed Trembling Aspen And White Spruce Stands In Northern British Columbia, Gordon Nigh

Aspen Bibliography

White spruce and trembling aspen are two important commercial species in British Columbia. They often grow in association, particularly in the Boreal White and Black Spruce and Sub-Boreal Spruce biogeoclimatic zones. Site index conversion equations are useful for estimating the site index of one species from the site index of another species. This study fills a need for site index conversion equations for mixed spruce/aspen stands. Seventy 0.01 ha study plots were established in mixed spruce/aspen stands. One site tree of each species was selected from each plot. The height and breast height ages of the site trees were measured …


Forval-Online: A Web-Based Forestry Investment Tool, Clay B. Landrum, Steven H. Bullard Jan 2001

Forval-Online: A Web-Based Forestry Investment Tool, Clay B. Landrum, Steven H. Bullard

Faculty Publications

Over the past decade, timber values have risen considerably, and society is beginning to see timberland for what it is – a valuable capital asset that must be managed properly. Timberlands, however, cannot be subject to an “across the board” management regime. Different sites possess different productive constraints, and the same holds true for landowners and their management goals. Considering the diversity of managers’ and landowners’ analysis needs, the ability to obtain a customized forestry investment analysis is invaluable. “FORVAL-online: A Web-based Forestry Investment Tool” is a project to develop and make widely available an accurate and easy to use …


Effects Of Diameter-Limit And Two-Age Timber Harvesting On Songbird Populations On An Industrial Forest In Central West Virginia, Cathy Ann Weakland Jan 2000

Effects Of Diameter-Limit And Two-Age Timber Harvesting On Songbird Populations On An Industrial Forest In Central West Virginia, Cathy Ann Weakland

Graduate Theses, Dissertations, and Problem Reports (ETD)

Many studies examining forest fragmentation effects on songbirds have been conducted in landscapes significantly altered by urbanization or agriculturalization rather than forested landscapes. There is some evidence that forest fragmentation due to timber harvesting has different effects on bird abundance than fragmentation from other land uses. It is unknown how songbirds respond to different forms of timber harvesting as fragmentation events. Also, it is unclear if microhabitat-level or landscape-level characteristics are more important predictors of breeding bird occurrence in the central Appalachians. The objectives of my study were to determine the short-term effects of diameter-limit and two-age timber harvesting on …


Effect Of Artificial Flooding On The Vegetation And Avifauna Of Riparian Woodlands At Santa Ana National Wildlife Refuge, Hidalgo County, Texas, Charles David Castillo Dec 1997

Effect Of Artificial Flooding On The Vegetation And Avifauna Of Riparian Woodlands At Santa Ana National Wildlife Refuge, Hidalgo County, Texas, Charles David Castillo

Theses and Dissertations - UTB/UTPA

Riparian habitats along the Rio Grande at Santa Ana National Wildlife Refuge have dramatically decreased since the construction of Falcon Dam in 1953. Riparian habitats are dependent on annual or periodic flooding to maintain their biological integrity. Lack of seasonal flooding has contributed to changes in vegetative composition from riparian forests to thornscrub. Effects of artificial flooding on vegetation and avifauna of riparian woodlands were evaluated from 1995-1997 at the Santa Ana National Wildlife Refuge. Floodwaters caused the destruction of all existing herbaceous species along study transects and the regeneration of new and native seedlings. Avian abundance and diversity dramatically …


Toxicity Of Aspen Wood Leachate To Aquatic Life: Laboratory Studies, Barry R. Taylor, J. Stephen Goudey, N. Bruce Carmichael Jan 1996

Toxicity Of Aspen Wood Leachate To Aquatic Life: Laboratory Studies, Barry R. Taylor, J. Stephen Goudey, N. Bruce Carmichael

Aspen Bibliography

Trembling aspen (Populus tremuloides Michx.), a common hardwood tree throughout Canada, is being harvested at increasing rates for use in paper and building materials. Piles of aspen logs have been observed to produce a dark, watery, acutely toxic leachate. A laboratory study was undertaken to elucidate the nature, strength, and persistence of aspen leachate toxicity and the chemical composition of the leachate. Leaching from aspen chips in the laboratory was rapid, with 1% mass loss in the first 24 h. Another 2 weeks of immersion was necessary to remove all remaining leachable material (3% total)> Fresh aspen leachate derived …


Forest Stand Dynamics, Update Edition, Chadwick Dearing Oliver, Bruce A. Larson Jan 1996

Forest Stand Dynamics, Update Edition, Chadwick Dearing Oliver, Bruce A. Larson

Yale School of the Environment Other Publications

This book describes the various growth patterns of forests from a mechanistic point of view. Its purpose is to help silviculturists, forest managers, and ecologists understand and anticipate how forests grow and respond to intentional manipulations and natural disturbances. Demands on the forest have been increasing for timber production, wildlife habitat, water protection, recreation, and protection from fires, insects, and diseases. These demands have created an emphasis on prescribing site-specific treatments for individual stands of trees, rather than treating broad areas uniformly


Carbon Allocation And Partitioning In Aspen Clones Varying In Sensitivity To Tropospheric Ozone, M.D. Coleman, R.E. Dickson, J.G. Isebrands, D.F. Karnosky Jan 1995

Carbon Allocation And Partitioning In Aspen Clones Varying In Sensitivity To Tropospheric Ozone, M.D. Coleman, R.E. Dickson, J.G. Isebrands, D.F. Karnosky

Aspen Bibliography

No abstract provided.


Forval A Software Package For Forestry And Natural Resources Project Valuation, Thomas J. Straka, Steven H. Bullard Jan 1994

Forval A Software Package For Forestry And Natural Resources Project Valuation, Thomas J. Straka, Steven H. Bullard

Faculty Publications

FORV(AFLO ResVt ALuationis) an interactive, user-friendly computeprr ogramfo r discountedc ash flow analysis of forestry andn atural resource investments.M anyfo rest economics applicationsa re includeda nde mphasiiss on the nonindustrial privatef orest sector; howeveri,n dustrya ndp ublics ector applications are easily performewdi th the programC. alculations includen et presentv alue, equivalenta nnuali ncome,b enefit/ cost ratio, internal rate of return, future value, sinking funds, installmentp aymentsa, ndl and expectationv alue. Thep rogram also allows the user to accountf or amortizationo f reforestation costs andd epletiona llowancesI. t includess elf-contained instructionsa ndw ill generatet he details of key calculations. FORVsAhLou ldp …


Moose (Alces Alces L.) Browsing In Young Scots Pine Stands In Relation To The Characteristics Of Their Winter Habitats, Risto Heikkila, Sauli Harkonen Jan 1993

Moose (Alces Alces L.) Browsing In Young Scots Pine Stands In Relation To The Characteristics Of Their Winter Habitats, Risto Heikkila, Sauli Harkonen

Aspen Bibliography

Moose (Alces alces L.) browsing was studied in young Scots pine (Pinus sylvestris L.) stands mixed with deciduous trees in high-density winter ranges. The proportional use of twig biomass decreased as the availability increased. The total as well as proportional biomass consumption were higher on the moist than on the dry type of forest. The per tree consumption of pine was higher on the moist type, where the availability of pine was lower. Deciduous trees were more consumed on the moist type, where their availability was relatively high. The consumption of pine saplings increased as the availability of …


Wooden Politics: Bernhard Fernow And The Quest For A National Forest Policy, 1876-1898, Char Miller Jan 1992

Wooden Politics: Bernhard Fernow And The Quest For A National Forest Policy, 1876-1898, Char Miller

Pomona Faculty Publications and Research

No abstract provided.


"What's Past Is Prologue": Our Legacy - Our Future, 1990 National Interpreters Workshop, David Kulhavy, Michael Legg Jan 1990

"What's Past Is Prologue": Our Legacy - Our Future, 1990 National Interpreters Workshop, David Kulhavy, Michael Legg

eBooks

"... the topics of the papers presented at the 1990 National Interpreters Workshop reflect a dynamic NAI membership. While firmly rooted to principles which have been developed in over a millennium, presenters show a healthy use of past knowledge as prologue to an active, vital present ..."


Spruce Budworm In Maine: The End Of The Outbreak: Biological Conditions In 1986, 1987, And 1988, And A Look At The Future, Henry Trial Jr. Oct 1989

Spruce Budworm In Maine: The End Of The Outbreak: Biological Conditions In 1986, 1987, And 1988, And A Look At The Future, Henry Trial Jr.

Maine Collection

Spruce Budworm in Maine: The End of the Outbreak: Biological Conditions in 1986, 1987, and 1988, and a Look at the Future

by Henry Trial, Jr., Insect and Disease Management Division

Technical Report No. 28

Maine Forest Service, Dept. of Conservation, Augusta, Maine, October 1989.

Contents: Introduction / Biological Conditions in 1986, 1987, and 1988 / Control Activities / Forest Conditions-1986 to 1988 and a Look at the Future / Spray Operations and Forecast of Conditions in Quebec and New Brunswick, 1986-1988 / The Future of Budworm in the Region and in Maine / List of Figures / List of …


Riparian Management: Back To Basics, Wayne Elmore Jun 1987

Riparian Management: Back To Basics, Wayne Elmore

The Public Lands During the Remainder of the 20th Century: Planning, Law, and Policy in the Federal Land Agencies (Summer Conference, June 8-10)

9 pages.


Proceedings : A Forest Based Economy - Carrying A Tradition Into The Future, Blaine House Conference On Forestry (December 6-7, 1984) Aug 1986

Proceedings : A Forest Based Economy - Carrying A Tradition Into The Future, Blaine House Conference On Forestry (December 6-7, 1984)

Maine Collection

Proceedings : A Forest Based Economy - Carrying A Tradition Into the Future

Blaine House Conference on Forestry (December 6-7, 1984)

Department of Conservation, State House Station 22, Augusta, Maine 04333, August 1986.

Contents: Table of Contents / Letter of Transmittal / The Forest 2020--Visions Of A Sustainable Forest / Forestry Resurvey: What Does It Say? How Can We Use It? / Can We Improve Maine's Timber Supply? / Atmospheric Deposition And Forests Of The Northeast / A National Perspective: What Is Maine's Competitive Niche? / The Future of Hardwood Markets / The Future of Softwood Markets / The State …


Limnological Aspects Of Upland Island: A Wilderness Area In East Texas, J. A. Sidnell, C W. Reed, J. D. Mccullough Jan 1986

Limnological Aspects Of Upland Island: A Wilderness Area In East Texas, J. A. Sidnell, C W. Reed, J. D. Mccullough

Faculty Publications

No abstract provided.


External Factors Shaping The 2010 Forester: Continuing Education From An Academic Point Of View, Thomas J. Straka, Steven H. Bullard Jan 1986

External Factors Shaping The 2010 Forester: Continuing Education From An Academic Point Of View, Thomas J. Straka, Steven H. Bullard

Faculty Publications

Professional obsolescence is a danger facing all foresters. All too many foreste·rs consider their educational commitment to terminate when they earn their degree. The competency of the professional forester can quickly erode if the forester does not develop a personal continuing education program.


An Introduction To Wilderness And Natural Area Management, David Kulhavy, D. B. Drummond Jan 1986

An Introduction To Wilderness And Natural Area Management, David Kulhavy, D. B. Drummond

Faculty Publications

No abstract provided.


Forest Protection, David Kulhavy, D. B. Drummond Jan 1986

Forest Protection, David Kulhavy, D. B. Drummond

Faculty Publications

No abstract provided.


Visitor Needs And User Impact, H. K. Cordell, M H. Legg, K. E. Cathey Jan 1986

Visitor Needs And User Impact, H. K. Cordell, M H. Legg, K. E. Cathey

Faculty Publications

No abstract provided.


Fire Effects In Northeastern Forests: Aspen, C. Rouse Jan 1986

Fire Effects In Northeastern Forests: Aspen, C. Rouse

Aspen Bibliography

No abstract provided.


Southern Pine Beetle: Annotated Bibliography, 1868-1982, David Kulhavy, Paul C. Johnson Jan 1983

Southern Pine Beetle: Annotated Bibliography, 1868-1982, David Kulhavy, Paul C. Johnson

eBooks

The FAMULUS computerized literature retrieval system was used to produce an annotated bibliography for the southern pine beetle, Dendroctonus frontalis Zimmermann. The bibliography contains 1,235 citations and is cross indexed by AUTHOR, TAXONOMY and KEYS to subject areas.


Spruce Budworm In Maine, 1910-1976: Infestations And Control, David Weed Jan 1977

Spruce Budworm In Maine, 1910-1976: Infestations And Control, David Weed

Maine Collection

Spruce Budworm in Maine, 1910-1976: Infestations and Control

compiled by David Weed, Maine Forest Service, Maine Department of Conservation, 1977.

Contents: I. Introduction, II. Infestation Chronology, III. Defoliation 1910-18 to 1976, IV. Spraying History, V. Mothflight Data, VI. Aircraft Employed, VII. Aircraft: Photo Essay


Texas Forestry Paper No. 27, J. David Lenhart, David M. Hyink May 1976

Texas Forestry Paper No. 27, J. David Lenhart, David M. Hyink

Texas Forestry Papers, No. 1-29, 1970-1976

"Number of 8.7 - foot veneer bolts in loblolly pine trees of old-field plantations in the interior west gulf coastal plain"


Texas Forestry Paper No. 28, J. J. Stransky, L. K. Halis, E. S. Nixon May 1976

Texas Forestry Paper No. 28, J. J. Stransky, L. K. Halis, E. S. Nixon

Texas Forestry Papers, No. 1-29, 1970-1976

"Plants following timber harvest: importance to songbirds"


Texas Forestry Paper No. 29, Ellis V. Hunt Jr., Edwin L. Miller May 1976

Texas Forestry Paper No. 29, Ellis V. Hunt Jr., Edwin L. Miller

Texas Forestry Papers, No. 1-29, 1970-1976

"Plant cover and soil erosion following site preparation and planting in east texas"


Texas Forestry Paper No. 25, Leonard F. Burkart, Jorge Cano-Capri Apr 1974

Texas Forestry Paper No. 25, Leonard F. Burkart, Jorge Cano-Capri

Texas Forestry Papers, No. 1-29, 1970-1976

"Tension wood in southern red oak quercus falcata michx."


Texas Forestry Paper No. 26, Robert D. Baker, David V. Smith Apr 1974

Texas Forestry Paper No. 26, Robert D. Baker, David V. Smith

Texas Forestry Papers, No. 1-29, 1970-1976

"Aerial photograph use in industrial forest management in the south, 1970 and 1974"


Studies On The Causes Of Tree Distribution In A Forest Type In The Dismal Swamp National Wildlife Refuge, Thomas A. Janszen Apr 1974

Studies On The Causes Of Tree Distribution In A Forest Type In The Dismal Swamp National Wildlife Refuge, Thomas A. Janszen

Biological Sciences Theses & Dissertations

Vegetational composition and environmental parameters were analyzed in a forest type of the Dismal Swamp. A 0.5 ha forest stand was divided into 200 5 x 5 meter contiguous quadrats and the tree size classes were precisely mapped. Fifty soil samples were analyzed for texture, pH, and major nutrients. A topographic map was constructed with precision to 0.01 ft. Analysis of variance tests showed non-randomness to exist in soil texture and nutrient content while homogeneity tests showed non-randomness in distribution of some woody species. Factor analysis indicated no significant correlations between soil quality, topography, and woody species. Findings indicate that …


Texas Forestry Paper No. 23, J. J. Stransky Jun 1973

Texas Forestry Paper No. 23, J. J. Stransky

Texas Forestry Papers, No. 1-29, 1970-1976

"Alternatives in southern wildlife-timber management"