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Articles 3691 - 3720 of 4004

Full-Text Articles in Forest Management

Conceptual Basis For An Index Of Forest Integrity For Upland Coastal Plain Ecosystems, Nicholas R. Brown, Brian Roy Lockhart, Philip A. Tappe, Lynne C. Thompson, Robert C. Weih Jr., Richard A. Williams Jan 1995

Conceptual Basis For An Index Of Forest Integrity For Upland Coastal Plain Ecosystems, Nicholas R. Brown, Brian Roy Lockhart, Philip A. Tappe, Lynne C. Thompson, Robert C. Weih Jr., Richard A. Williams

Journal of the Arkansas Academy of Science

Following the recent trend to manage natural resources for "sustainability," ecologists, resource managers and policymakers are beginning to think of the management of forest ecosystems in terms of "ecosystem health" or "ecosystem integrity." Biologists are increasingly recognizing that use of chemical assays in assessing the condition of an ecosystem has limited value, and that biological factors, e.g., species diversity and composition, can be useful characters in the analysis of "biotic integrity." An index of biotic integrity (IBI) has been developed for riverine ecosystems in the Midwest U.S., using fish species diversity, indicator population analysis, trophic structure assessment, and physiological abnormalities …


Influence Of Pine Silvicultural Systems On Spider Population Diversity In Drew County, Arkansas, Holly Hill, Peggy Rae Dorris, Lynne C. Thompson Jan 1995

Influence Of Pine Silvicultural Systems On Spider Population Diversity In Drew County, Arkansas, Holly Hill, Peggy Rae Dorris, Lynne C. Thompson

Journal of the Arkansas Academy of Science

Spiders were collected by pit-trapping in southeastern Arkansas in 1984. Collection areas included two pine silvicultural treatments, clear-cutting and selection cutting; and control stands, where no cutting occurred. Spider populations decreased with increased disturbance.


Timber Felling Time, Costs, And Productivity In Arkansas, Richard A. Kluender, D. Lortz, W. Mccoy, B. Stokes, J. Klepac Jan 1995

Timber Felling Time, Costs, And Productivity In Arkansas, Richard A. Kluender, D. Lortz, W. Mccoy, B. Stokes, J. Klepac

Journal of the Arkansas Academy of Science

Sixteen stands were harvested by either clearcut, shelterwood, group selection, or single-tree selection methods. Harvest productivity was evaluated in four consecutive years (1991 through 1994). Three of the stands had uneven-aged structure, the other 13 were typical, mature, even-aged stands. Harvest intensity (proportion of basal area removed) ranged from 0.27 to 1.00. Logging contractors used one to three sawyers with production chain saws to fell trees on all 16 tracts. There was no statistical difference in production rate between sawyers on the same stand. Harvested sites were similar in slope, average diameter at breast height (DBH) and pre-harvest number of …


Meeting Minutes, December 20th, 1994, National Smokejumper Association Executive Committee Dec 1994

Meeting Minutes, December 20th, 1994, National Smokejumper Association Executive Committee

National Smokejumper Association Meeting Minutes

Agenda: Old Business; Board Walk Travel; Travel From Washington Dc To Missoula; Ronald Young National Agriculture Library; Hotel/Motel; Camping At Fairgrounds. Restrooms Open?; Day Trips; News Letter; Motels, Car Rental, Airlines, And Listing Of Day Trips; Work Study Student; Membership Rosters; Rent Vs Direct Payment; Nsa To Pay Earl; Reunion; Planning Meetings; Invite Charter;


Research Report No. 32, Trends Of Non-Straight Tree Stems In Loblolly And Slash Pine Plantations In East Texas, 1985-1994, H. Alexis Ross, J. David Lenhart Dec 1994

Research Report No. 32, Trends Of Non-Straight Tree Stems In Loblolly And Slash Pine Plantations In East Texas, 1985-1994, H. Alexis Ross, J. David Lenhart

Informal Project Reports

Trees from East Texas loblolly ( Pinus taeda L. ) and slash ( Pinus effiottii Engelm. ) pine plantations are one of the sources of raw material for conversion into products such as paper, veneer and lumber by East Texas forest product mills. The utilization of the planted trees may depend on various biological and economical factors. Factors such as tree size, tree condition, stumpage prices and interest rates can play a role in the merchandizing process.

One of the factors, tree condition, may be affected by tree crown position in canopy, incidence of disease, single stem and straightness of …


Integrating Public Land And Local Community Planning Objectives: The Rocky Mountain National Park Experience, Homer L. Rouse Sep 1994

Integrating Public Land And Local Community Planning Objectives: The Rocky Mountain National Park Experience, Homer L. Rouse

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

7 pages.


The Canyon Country Partnership, Bill Hedden Sep 1994

The Canyon Country Partnership, Bill Hedden

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

18 pages.


Community-Public Lands Partnership: The Montezuma County Federal Lands Program, Michael F. Preston Sep 1994

Community-Public Lands Partnership: The Montezuma County Federal Lands Program, Michael F. Preston

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

18 pages (includes illustrations and maps).

Contains 1 page of references.


The Utah Wilderness Debate (Or Is That Debacle), Jeffrey W. Appel Sep 1994

The Utah Wilderness Debate (Or Is That Debacle), Jeffrey W. Appel

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

95 pages (includes illustrations and maps).


Public Land Management Decisions Affecting Water Rights: The Issue Of Requiring By- Pass Flows As A Condition Of National Forest Special Use Permits For Water Facilities, David H. Getches Sep 1994

Public Land Management Decisions Affecting Water Rights: The Issue Of Requiring By- Pass Flows As A Condition Of National Forest Special Use Permits For Water Facilities, David H. Getches

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

12 pages.


Local And National Interests In Using Public Forests: Lessons From The Pacific Northwest, Part I: A Time For Scientists And Lawyers, K. Norman Johnson Sep 1994

Local And National Interests In Using Public Forests: Lessons From The Pacific Northwest, Part I: A Time For Scientists And Lawyers, K. Norman Johnson

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

18 pages.

Contains references.


Local And National Interests In Using Public Forests: Lessons From The Pacific Northwest[, Part] Ii, Margaret A. Shannon Sep 1994

Local And National Interests In Using Public Forests: Lessons From The Pacific Northwest[, Part] Ii, Margaret A. Shannon

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

12 pages.

Contains references.


Developments And Trends In Fiber Supply: Implications For The Northwest’S Forest Products Industry, James C. Geisinger Sep 1994

Developments And Trends In Fiber Supply: Implications For The Northwest’S Forest Products Industry, James C. Geisinger

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

7 pages (includes illustrations).


Local And National Interests In Using Pub[L]Ic Forests, Andy Kerr Sep 1994

Local And National Interests In Using Pub[L]Ic Forests, Andy Kerr

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

3 pages.


Decision Making And The Public Lands, Robert K. Davis Sep 1994

Decision Making And The Public Lands, Robert K. Davis

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

18 pages.

Contains 3 pages of references.


Agenda: Who Governs The Public Lands: Washington? The West? The Community?, University Of Colorado Boulder. Natural Resources Law Center Sep 1994

Agenda: Who Governs The Public Lands: Washington? The West? The Community?, University Of Colorado Boulder. Natural Resources Law Center

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

Conference organizers and/or session moderators included University of Colorado School of Law professors David H. Getches, Judith Jacobsen, Lawrence J. MacDonnell, Teresa Rice and Charles F. Wilkinson.

Shifting policy objectives and management approaches for the public lands of the West are provoking heated debate about how these decisions should be made and implemented. Are these policy directions a reflection of the "New West" or are they, in fact, a declaration of "war on the West"? Somewhere between these polarities of view, efforts are underway to open dialogue and reach consensus.

This second annual western lands conference will explore federal initiatives …


Constitutional And Congressional Requirements Directing Public Lands Decisionmaking, Joseph M. Feller Sep 1994

Constitutional And Congressional Requirements Directing Public Lands Decisionmaking, Joseph M. Feller

Who Governs the Public Lands: Washington? The West? The Community? (September 28-30)

15 pages.

Contains references.


Meeting Minutes, September 19th, 1994, National Smokejumper Association Executive Committee Sep 1994

Meeting Minutes, September 19th, 1994, National Smokejumper Association Executive Committee

National Smokejumper Association Meeting Minutes

Agenda: Old Business; Newsletter; Computer; Work Study; Master Rosters; letter to Asa Mundell; Western Business Equipment; Form Letters ; NEW BUSINESS; Members to date; treasurer's Report; See attached page.; Audit; Checking Account; Motioned to adjourn.;


Research Report No. 31, Observed Growth Rates Of Loblolly And Slash Pine Plantations In East Texas, H. Alexis Ross, J. David Lenhart Sep 1994

Research Report No. 31, Observed Growth Rates Of Loblolly And Slash Pine Plantations In East Texas, H. Alexis Ross, J. David Lenhart

Informal Project Reports

Of the approximately 11.2 million acres of forest in East Texas, about 2.5 million acres have been planted with loblolly pine trees ( Pinus taeda L. ) and 500,000 acres with slash pine trees ( Pinus elliottii Engelm. ). These plantations are owned by public, industrial and non-industrial private entities with industrial ownership dominating. Even though most pine plantations in East Texas are relatively young (20 years or less), plantation information is needed for management decision-making.


Research Report No. 30, A Guide For Timing Initial Tree Harvests In East Texas Loblolly And Slash Pine Plantations, J. David Lenhart, H. Alexis Ross Sep 1994

Research Report No. 30, A Guide For Timing Initial Tree Harvests In East Texas Loblolly And Slash Pine Plantations, J. David Lenhart, H. Alexis Ross

Informal Project Reports

In East Texas, there are approximately 3 million acres of loblolly ( Pinus taeda L. ) and slash ( Pinus elliottii Engelm. ) pine plantations. Most of these plantations, which represent about 25% of the forested area of East Texas, have been planted since 1970.

As these planted trees age, East Texas foresters may be considering initial timber harvesting decisions for unthinned plantations. Often the timing of the harvests can be determined by considering combinations of economic and non-economic values, utilization standards and timber growth' factors. However, in some situations, it may be appropriate to ascertain the proper timing by …


Meeting Minutes, April 13th, 1994, National Smokejumper Association Executive Committee Apr 1994

Meeting Minutes, April 13th, 1994, National Smokejumper Association Executive Committee

National Smokejumper Association Meeting Minutes

Agenda: Old Business; Lease Agreement; C.P.A.- Service To N.S.A.; Newsletter; Video Production; Office Computer; Roster Orders; Financial Report; Membership; Telephone With Speaker; Stationary; Reunion Report; Nsa Pamphlet; 9:15 P.M. Meeting Adjourned.


Research Report No. 29, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1994, Jason Black, Chad Holton, Billy Johnson, Jennifer Key, Mark Kotal, Daryl Lawerence, Jon Mastin, Jack Ridinger, Janet Russell Apr 1994

Research Report No. 29, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1994, Jason Black, Chad Holton, Billy Johnson, Jennifer Key, Mark Kotal, Daryl Lawerence, Jon Mastin, Jack Ridinger, Janet Russell

Informal Project Reports

In 1986, equations to estimate site index in loblolly and slash pine plantations in East Texas were published (Lenhart et al. 1986). Subsequently, updated site index prediction equations were published in 1993 (Vaughn et al. 1993). Both sets of equations were developed using data collected from East Texas Pine Plantation Research Project (ETPPRP) permanent plots distributed throughout East Texas. The site index prediction equations were designed to estimate tree height 25 years from planting, ie., index age = 25 years.

Data for the 1986 and 1993 site index prediction equations were from measurements of the ETPPRP permanent plots during 19182-1984 …


Uinta National Forest Rangeland Ecosystem Forest Plan Amendment: Final Environmental Impact Statement, U.S. Forest Service Jan 1994

Uinta National Forest Rangeland Ecosystem Forest Plan Amendment: Final Environmental Impact Statement, U.S. Forest Service

All U.S. Government Documents (Utah Regional Depository)

This final environmental impact statement describes alternatives, including a "no action" alternative for management of national forest rangeland resources on the Uinta National Forest.


Hydraulic Lift And Soil Nutrient Heterogeneity, Martyn M. Caldwell, John H. Manwaring Jan 1994

Hydraulic Lift And Soil Nutrient Heterogeneity, Martyn M. Caldwell, John H. Manwaring

Green Canyon Environmental Research Area, Logan Utah

Water released at night from roots into upper portions of the soil profile in the process of hydraulic lift may contribute to reducing spatial soil nutrient heterogeneity. A manipulative field experiment was conducted in a semiarid shrub stand to determine if circumvention of hydraulic lift, by nighttime illumination of the shrub canopy, would result in greater soil nutrient heterogeneity than if the hydraulic lift process was allowed to operate. Nutrient-enriched patches were superimposed on the existing soil heterogeneity and after 40 days, the patches and interspaces were sampled for ions of different mobility and for root mass. There was no …


Stratospheric Ozone Reduction, Solar Uv-B Radiation And Terrestrial Ecosystems, Martyn M. Caldwell, Stephan D. Flint Jan 1994

Stratospheric Ozone Reduction, Solar Uv-B Radiation And Terrestrial Ecosystems, Martyn M. Caldwell, Stephan D. Flint

Green Canyon Environmental Research Area, Logan Utah

Stratospheric ozone reduction is occurring and will continue to increase in magnitude into the next century. Yet, the consequences for terrestrial ecosystems of the increased solar W-B (280-320 nm) radiation resulting from total column ozone reduction are not understood. Based on studies of higher plant response to UV-B, several possible consequences for ecosystems include decreased primary production, altered plant species composition, and altered secondary chemistry with implications for herbivory, litter decomposition and biogeochemical cycles. However, like the assessment of increased atmospheric CO2, extrapolation from studies with isolated plants to ecosystem function is very tenuous at best. Very few UV-B studies …


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 …


Effect Of Product Price, Interest Rates And Forestry Incentives On Financial Returns From Arkansas' Nonindustrial Private Forests, James R. Jolley, Richard A. Kluender Jan 1994

Effect Of Product Price, Interest Rates And Forestry Incentives On Financial Returns From Arkansas' Nonindustrial Private Forests, James R. Jolley, Richard A. Kluender

Journal of the Arkansas Academy of Science

As the U.S. population increases, demand for Arkansas' forest production will continue to increase. Nonindustrial private forests (NIPF) will be increasingly relied upon to meet future demand. Restocking following harvest and good forest management techniques have not always been practiced on NIPF lands. Federal cost sharing programs exist which encourage investment in forestry; federal programs may pay up to half of establishment and management costs. Special federal capital gains treatment and other tax incentives also exist for nonindustrial landowners; however, nonindustrial use of incentives is not great. Models were developed to determine whether actual stumpage prices and existing economic incentives …


Field Maps 1994, Grace K. Attea, Ryan W. Mcewan, John L. Vankat Jan 1994

Field Maps 1994, Grace K. Attea, Ryan W. Mcewan, John L. Vankat

Data Files for Old-Growth Deciduous Forest Dynamics Archive: Hueston Woods

Historical field map scans (1994) for the permanent 100m x 105m research plot in Hueston Woods State Nature Preserve.

Maps were digitized in 2022.


Comparative Gas-Exchange In Leaves Of Intact And Clipped, Natural And Planted Cherrybark Oak (Quercus Pagoda Raf.) Seedlings, Brian Roy Lockhart, John D. Hodges Jan 1994

Comparative Gas-Exchange In Leaves Of Intact And Clipped, Natural And Planted Cherrybark Oak (Quercus Pagoda Raf.) Seedlings, Brian Roy Lockhart, John D. Hodges

Journal of the Arkansas Academy of Science

Gas-exchange measurements, including CO2 -exchange rate (net photosynthesis), stomatal conductance, and transpiration, were conducted on intact and clipped cherrybark oak (Quercus pagoda Raf.) seedlings growing in the field and in a nursery bed. Seedlings in the field, released from midstory and understory woody competition, showed significant increases in gas-exchange compared to non-released seedlings due to increases in light levels reaching seedlings. Concurrently, little difference occurred in the CO2 -exchange rate between intact and clipped seedlings in the released treatment although clipped seedlings maintained a consistently greater rate of stomatal conductance. In order to reduce the high variability of light levels …


Renewal And Recovery: Shortleaf Pine /Bluestem Grass Ecosystem And Red-Cockaded Woodpeckers, George A. Bukenhofer, Joseph C. Neal, Warren G. Montague Jan 1994

Renewal And Recovery: Shortleaf Pine /Bluestem Grass Ecosystem And Red-Cockaded Woodpeckers, George A. Bukenhofer, Joseph C. Neal, Warren G. Montague

Journal of the Arkansas Academy of Science

No abstract provided.