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University of Arkansas, Fayetteville

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Articles 61 - 80 of 80

Full-Text Articles in Forest Management

Evaluation Of Three Types Of Forest Openings As Habitat For Wild Turkeys, Thomas A. Nelson Jan 1999

Evaluation Of Three Types Of Forest Openings As Habitat For Wild Turkeys, Thomas A. Nelson

Journal of the Arkansas Academy of Science

No abstract provided.

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Assessing The Cost Of Best Management Practices In Arkansas, Richard A. Kluender, Robert C. Weih Jr., M. Corrigan, J. Pickett Jan 1997

Assessing The Cost Of Best Management Practices In Arkansas, Richard A. Kluender, Robert C. Weih Jr., M. Corrigan, J. Pickett

Journal of the Arkansas Academy of Science

A geographic information system (GIS) is a set of powerful, computer-based, analytical algorithms for solving spatial data problems. Recently, due to increases in memory size, computing speed, and programming advances, personal computers have been used in spatial analysis problems. This study reports the benefits of using a PC-based GIS system to solve a common, but complicated problem in forest management: assignment of harvesting areas with harvesting exclusion zones. Two stands each from the USDA Crossett Experimental Forest, the University of Arkansas Forest, and the Ouachita National Forest (total six) were analyzed to determine the changes due to following best management …

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Effects Of Retained Pine And Hardwood Basal Areas On Percent Cover Of Plants Utilized By Bobwhite Quail, David G. Peitz, Philip A. Tappe, Michael G. Shelton Jan 1997

Effects Of Retained Pine And Hardwood Basal Areas On Percent Cover Of Plants Utilized By Bobwhite Quail, David G. Peitz, Philip A. Tappe, Michael G. Shelton

Journal of the Arkansas Academy of Science

Percent cover of seven forage species utilized by bobwhite quail (Colinus virginianus) was determined before thinning and 2 and 4 years after thinning a 35-year-old loblolly pine-hardwood stand. Combinations of three loblolly pine (15, 18, and 21 m2/ha) and three hardwood (0, 3.5, and 7 m2/ha) basal areas were replicated three times. Percent cover was determined for American beautyberry (Callicarpa americana), blackberry (Rubus spp.), tick trefoil (Desmodium spp.), lespedeza (Lespedeza spp.), panic grass (Panicum spp.), yellow wood sorrel (Oxalis stricta), and three-seeded mercury (Acalypha spp.). Percent cover of American beautyberry and blackberry increased with time. Tick trefoil and panic grass …

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Methodology For Integrating Aerial Photography And Landsat Tm Imagery For Inventory Of Forest Land Cover, Chris W. Bennett, Robert C. Weih Jr. Jan 1997

Methodology For Integrating Aerial Photography And Landsat Tm Imagery For Inventory Of Forest Land Cover, Chris W. Bennett, Robert C. Weih Jr.

Journal of the Arkansas Academy of Science

Forest cover for 7.25 million acres (2.93 million hectares) in southeastern Georgia was characterized for the years 1988 and 1994 with the intent of assessing the efficacy of remote sensing procedures for broad scale forest inventory. Landsat-5 Thematic Mapper digital satellite scenes of seven spectral bands were obtained for winter and summer of each year and were analyzed two separate 14-band multi-temporal images. Images were geo-referenced to the universal transverse mercator (UTM) coordinate system prior to classification. Spectral classification with the 1SOCLUSTER algorithm produced 250 categories. Color infrared aerial photographs were mapped to the digital imagery and were used to …

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Variability In Forest Floor Mass And Nutrient Concentration Of Mature Pine-Hardwoods In The Ouachita Mountains, Hal O. Liechty, Michael G. Shelton, Edwin R. Lawson Jan 1997

Variability In Forest Floor Mass And Nutrient Concentration Of Mature Pine-Hardwoods In The Ouachita Mountains, Hal O. Liechty, Michael G. Shelton, Edwin R. Lawson

Journal of the Arkansas Academy of Science

Prior to timber harvesting, forest floor mass and nutrient concentrations in forest floor and mineral soil were determined in 24 mature, shortleaf pine (Pinus echinata Mill.)-hardwood stands occurring within the northern, eastern, southern and western sub-ecoregions of the Ouachita Mountains. The forest floor samples were collected at each of three locations representing the lower, mid, and upper slope positions within each stand. Samples of the L-(litter) and F-layers (fermentation) were collected separately. Materials from the L-layer were differentiated into hardwood foliage, pine foliage, and woody/reproductive components. Mass and nutrient concentrations of the various forest floor components were compared among slope …

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Integrating Gis And Remote Sensing With Ecosystem Research, Suzanne Wiley, Robert C. Weih Jr. Jan 1997

Integrating Gis And Remote Sensing With Ecosystem Research, Suzanne Wiley, Robert C. Weih Jr.

Journal of the Arkansas Academy of Science

In the Phase II Ecosystem Management Research Program in the Ouachita and Ozark National Forests, an interdisciplinary group of scientists are evaluating the effects and trade-offs of partial cutting methods in a replicated stand level study. Information from approximately 2,000 plots is being collected by more than fifty researchers during this five-year project with plans to continue data collection long term. To evaluate the effects of different management strategies and their interactions with forest resources, data must be brought into a common format and made available to all researchers. To this end, a data support system was developed which utilizes …

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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 …

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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.

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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 …

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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 …

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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 …

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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.

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Assessment Of Timber Resource Values In Arkansas, Richard A. Williams, Richard A. Kluender Jan 1992

Assessment Of Timber Resource Values In Arkansas, Richard A. Williams, Richard A. Kluender

Journal of the Arkansas Academy of Science

The Arkansas forest lands have long been and will continue to be an important contributor to the state's economy. Today, Arkansas forests cover 52 percent of the land area (Hines and Vissage, 1988). These forests are classified by physiographic characteristics into four timber regions. The timber removed from forested lands provides direct and indirect employment for approximately 40,000 people within the Arkansas manufacturing sector (Kluender and Willett, 1989). This paper describes county and region level information, identifies standing timber volumes, net annual timber growth, net annual timber removals, and associated dollar values. Timber stand data are used to determine areas …

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Vegetation Of Saratoga Landing Blackland Prairie, Thomas L. Foti Jan 1990

Vegetation Of Saratoga Landing Blackland Prairie, Thomas L. Foti

Journal of the Arkansas Academy of Science

Saratoga Landing Blackland Prairie is a 75-ha site owned by the U.S. Army Corps of Engineers and managed cooperatively with the Arkansas Natural Heritage Commission to protect its blackland prairie community and rare plant species. The site is a complex of prairies and forests, as interpreted from aerial photos and maps. It was substantially prairie at the time of settlement, and forest cover did not increase greatly until after 1951, apparently due to effective suppression of wildfires after that time. Plot sampling characterizes an individual prairie on the site as being dominated by a herbaceous canopy, but with a substantial …

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Arkansas' Incendiary Wildfire Record: 1983-1987, Richard A. Kluender, L. C. Thompson, R. J. Mcfarland, D. M. Steigerwald Jan 1989

Arkansas' Incendiary Wildfire Record: 1983-1987, Richard A. Kluender, L. C. Thompson, R. J. Mcfarland, D. M. Steigerwald

Journal of the Arkansas Academy of Science

All wildfire reports from lands protected by the Arkansas Forestry Commission for the calendar years 1983 through 1987 were studied. The number of wildfires steadily increased from 2,185 in 1983 to 4,150 in 1987, burning a total of 27,146 hectares in 1987. Incendiarism on forested lands in 1987 comprised 77% of the total fires and 84% of the area burned. Incendiarism was responsible for 40% of all fires and 60% of the area burned in 1983, but increased to 54% of all fires and 69% of the area burned in 1987. In 1987, 80% of all incendiary fires on industry …

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Forestry On The Island Of Taiwan, Roc - The State Of The Art, James M. Guldin, Timothy T. Ku, R. Scott Beasley Jan 1988

Forestry On The Island Of Taiwan, Roc - The State Of The Art, James M. Guldin, Timothy T. Ku, R. Scott Beasley

Journal of the Arkansas Academy of Science

The forests of Taiwan vary from lush subtropical vegetation to subalpine coniferous associations. Topography is exceedingly rugged, and stands border on the verge of silvicultural inoperability. In the 1950s and 1960s, the wood products industry in the Republic of China was of paramount importance; the production of high-quality sawtimber from old-growth cypress (Cupressaceae) stands provided the financial capital that built one of the most prosperous national economies in the modern world. In the 1980s, forestry in Taiwan is a curious blend of old methods and new technologies, as modern silvicultural practices are used to reforest cutover cypress stands, to harvest …

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Analysis Of Wildfire Occurrence In Southeastern Arkansas, 1984-1987, Richard A. Kluender, Lynne C. Thompson, G. W. Callahan Jan 1988

Analysis Of Wildfire Occurrence In Southeastern Arkansas, 1984-1987, Richard A. Kluender, Lynne C. Thompson, G. W. Callahan

Journal of the Arkansas Academy of Science

Wildfire statistics for Arkansas Forestry Commission District I in southeastern Arkansas were analyzed for the period 1 984 through 1987. A mean of 313 fires and 1103 hectares burned annually during the study period. Most (87%) of the land burned was forested. The greatest number (90%) of wildfires occurred when fire-danger was moderate to high. Most fires were started (90%) and detected (51%) by local residents. Arson was responsible for the majority of fires (68%) and hectares burned (65%). A disproportionately high number (43%) of the incendiary fires occurred in Ashley County. Mean fire size was smaller in this county. …

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Arkansas' Timber Resource: Yesterday, Today, And Tomorrow, Richard A. Kluender, R. L. Willett Jan 1988

Arkansas' Timber Resource: Yesterday, Today, And Tomorrow, Richard A. Kluender, R. L. Willett

Journal of the Arkansas Academy of Science

Demand for forest products continues to rise. Arkansas provides about 4% of the U.S. total forest production and about 12% of the south central region production. Questions exist about the ability of current forest resources to completely meet anticipated future demand. In 1985, the U.S. Forest Service and the Arkansas Timber Study Committee began to analyze the existing forest base to determine whether future demand could be met from the current forest, or if not, what management changes were needed to help meet future demand. In 1985, Arkansas forests covered approximately 48% of the total land area of the state. …

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Forest Data Base For Arkansas, Richard A. Kluender, E. Wesley Mccoy Jan 1986

Forest Data Base For Arkansas, Richard A. Kluender, E. Wesley Mccoy

Journal of the Arkansas Academy of Science

No abstract provided.

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Some Observations On Mismanagement Of Grasslands And Woodlands, Orrin J. Henbest Jan 1951

Some Observations On Mismanagement Of Grasslands And Woodlands, Orrin J. Henbest

Journal of the Arkansas Academy of Science

No abstract provided.

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