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Articles 1 - 30 of 69
Full-Text Articles in Life Sciences
The Probability Of Moose Damage At The Stand Level In Southern Finland, Anneli Jalkanen
The Probability Of Moose Damage At The Stand Level In Southern Finland, Anneli Jalkanen
Aspen Bibliography
The probability of moose damage was studied in sapling stands and young thinning stands in southern Finland. Data from the eighth National Forest Inventory in 1986–92 were used for modelling. The frequency of damage was highest at the height of two to five meters and at the age of ten to twenty years (at the time of measurement). Moose preferred aspen stands the most and least preferred Norway spruce stands. Scots pine and silver birch were also susceptible to damage. Logistic regression models were developed for predicting the probability that moose damage is the most important damaging agent in a …
Arboles Trabajando En Beneficio De La Ganaderia
Arboles Trabajando En Beneficio De La Ganaderia
Working Trees (USDA-NAC)
Éstos son, árboles que se utilizan en conservación y sistemas de producción en fincas y ranchos. Estos árboles tienen un trabajo que realizar, sea aumentar los ingresos, proteger los recursos naturales o hacernos disfrutar un poco más de nuestras vidas. “Árboles trabajando” es un lema usado para promover la ciencia y práctica de la agroforestería. Agroforestería es un término que agricultores y dasónomos han definido para incluir la mayoría de las prácticas en las que se integran árboles y arbustos de forma intencional junto con un cultivo, forraje u operaciones de ganadería. Prácticas tales como rompevientos, bosques ribereños de amortiguamiento, …
Pb1693 Sawing Logs For Quartersawn Lumber, The University Of Tennessee Agricultural Extension Service
Pb1693 Sawing Logs For Quartersawn Lumber, The University Of Tennessee Agricultural Extension Service
Forestry, Trees, and Timber
Hardwood lumber producers are constantly looking for ways to increase the value of their products. One way to increase lumber value is to saw logs using a method that will produce quartersawn lumber where growth rings appear parallel to one another on the wide face of the board. Quartersawn lumber is more valuable than lumber sawn using other methods and is very desirable for applications such as furniture and cabinet making. This publication describes quartersawn lumber, explains how it differs from lumber with other grain patterns and details several methods for producing quartersawn lumber on either a sawmill with a …
Setting Up The Books: A Forest Owner's Guide To Capital Accounts And Record-Keeping For Federal Income, The University Of Tennessee Agricultural Extension Service
Setting Up The Books: A Forest Owner's Guide To Capital Accounts And Record-Keeping For Federal Income, The University Of Tennessee Agricultural Extension Service
Financial Management
Forest owners have a number of federal income tax incentives available to them. Growing timber can 2 be an income-producing activity, with the trees being considered a capital asset. Income from sales or other disposition of capital assets is then taxed at capital gains rates, as opposed to ordinary income tax rates. Investments in timber can be recovered through depletion deductions and reforestation expenses, qualifying for a tax credit. These provisions and others in the tax code encourage timber production, which is generally considered to be good for both the ecology and the economy. This publication will assist you …
Arboles Trabajando En Benficio De La Agricultura
Arboles Trabajando En Benficio De La Agricultura
Working Trees (USDA-NAC)
Imagine por un momento que en su finca usted cuenta con un producto capaz de controlar la erosión, aumentar el rendimiento de las cosechas y absorber los contaminantes en aguas de escorrentía. ¿Y que le parece si además pudiera proteger a los animales de fuertes vientos y temperaturas críticas, a la vez que éstos animales aumentan de peso y reducen los gastos de energía? Un producto que provea fuentes adicionales de ingreso y que provea diversidad al medioambiente, mantenga las aguas limpias y atraiga más vida silvestre. Seguramente la mayoría de nosostros correríamos a comprarlo.
Por supuesto un producto como …
Forested Wetlands Of The Southern United States: A Bibliography, William Conner, Nicole L. Hill, Evander M. Whitehead, William S. Busbee, Marceau A. Ratard, Mehmet Ozalp, Darrell L. Smith, James P. Marshall
Forested Wetlands Of The Southern United States: A Bibliography, William Conner, Nicole L. Hill, Evander M. Whitehead, William S. Busbee, Marceau A. Ratard, Mehmet Ozalp, Darrell L. Smith, James P. Marshall
Publications
The term forested wetland covers a variety of forest types including mangroves, cypress/tupelo swamps, bottomland hardwoods, pocosins and Carolina bays, flatwoods, and mountain fens. These forests are dominated by woody species that have morphological features, physiological adaptations, and/or reproductive strategies enabling them to achieve maturity and reproduce in an environment where the soils within the rooting zone may be inundated or saturated for various periods during the growing season. Although alluvial floodplains occur along most streams of the United States, they are most extensive in the Atlantic Coastal Plain, Gulf Coastal Plain, and Mississippi Alluvial Plain. Only about half of …
Temporal And Spatial Variation Of Nitrogen Transformations In Nitrogen-Saturated Soils Of A Central Appalachian Hardwood Forest, Frank S. Gilliam, Bradley M. Yurish, Mary Beth Adams
Temporal And Spatial Variation Of Nitrogen Transformations In Nitrogen-Saturated Soils Of A Central Appalachian Hardwood Forest, Frank S. Gilliam, Bradley M. Yurish, Mary Beth Adams
Biological Sciences Faculty Research
We studied temporal and spatial patterns of soil nitrogen (N) dynamics from 1993 to 1995 in three watersheds of Fernow Experimental Forest, W.V.: WS7 (24-year-old, untreated); WS4 (mature, untreated); and WS3 (24-year-old, treated with (NH4)2SO since 1989 at the rate of 35 kg Nha–1year–1). Net nitrification was 141, 114, and115 kg Nha–1year–1, for WS3, WS4, and WS7, respectively, essentially 100% of net N mineralization for all watersheds. Temporal (seasonal) patterns of nitrification were significantly related to soil moisture and ambient temperaturein untreated watersheds only. Spatial patterns of soil water NO3–of WS4 suggest that microenvironmental variabilitylimits rates of N processing in …
Meeting Minutes, September 15th, 2001, National Smokejumper Association Executive Committee
Meeting Minutes, September 15th, 2001, National Smokejumper Association Executive Committee
National Smokejumper Association Meeting Minutes
Agenda: Old Business; Treasurers Report.; Membership Report.; Merchandise Report.; Magazine Report.; Yearbook Report.; Trails Program.; Evergreen Museum.; Nsa Records Scanning Project.; Us Forest Service Museum.; Glacier Beer.; Additional Nsa Videos.; Status Of 2000 Data Base At The Sj Bases.; Reunion 2004.; New Business; Officers For Next Year.; Next Meeting Date.; Museum Of Mountain Flying.; Meeting Adjourned.;
Modeling Vegetative Buffer Performance Considering Topographic Data Accuracy, Jason M. Brothers, Dean E. Eisenhauer, Matthew J. Helmers, Mike Dosskey, Thomas G. Franti
Modeling Vegetative Buffer Performance Considering Topographic Data Accuracy, Jason M. Brothers, Dean E. Eisenhauer, Matthew J. Helmers, Mike Dosskey, Thomas G. Franti
USDA Forest Service / UNL Faculty Publications
Riparian buffers are a promising tool in efforts to reduce sediment contribution to streams. Models that predict the capacity of buffers to trap sediment have recently been developed. A number of parameters that are required to conduct such modeling efforts are derived from the topography of the site. In this study, three topographic data sources were used to generate the model input for an agricultural field with a riparian buffer. The runoff and sediment transport in the system was then simulated for three years. As a result, the area that contributed runoff and sediment to the buffer was substantially different …
Leaf Litter Decomposition And Nutrient Dynamics In Four Southern Forested Floodplain Communities, William Conner, Terrell T. Baker Iii, B Graeme Lockaby, Calvin Meier, John A. Stanturf, Marianne K. Burke
Leaf Litter Decomposition And Nutrient Dynamics In Four Southern Forested Floodplain Communities, William Conner, Terrell T. Baker Iii, B Graeme Lockaby, Calvin Meier, John A. Stanturf, Marianne K. Burke
Publications
Decomposition of site-specific litter mixtures was monitored for 100 wk in four Roodplaht communities: (i) a mixed oak community along the Cache River in central Arkansas, (ii) s sweetgum (Liquidambar styracijlua L.)-cherrybark oak (Quercus falcata var. pagodaefolia ELI.) community along Iatt Creek in central Louisiana, (iii) a sweetgum-swamp tupelo [Nyssa sylvatica var. biflora (Walt.) Sarg.] community, and (iv) a laurel oak (Quercus laurifolia Michx.) commnnity
along the Coosawhatchie River in southeastern South Carolina. Soil temperature, hydroperiod, and litter quality (C:N, C:P, N:P, fignin: N) were used to interpret differences in the rates of mass loss and …
Meeting Minutes, June 16th, 2001, National Smokejumper Association Board Of Directors
Meeting Minutes, June 16th, 2001, National Smokejumper Association Board Of Directors
National Smokejumper Association Meeting Minutes
Agenda: Board of Directors Elected; Term Completed; Treasurer's Report; Membership Report; Merchandise Report; Magazine Report; Other Museum-Related Actions; NSA Website; Relational Database; Digitizing NSA Records; Yearbook report; Trails Project; Investment Fund; Commercial Purposes; Video Report; Planning Chairman; NEW BUSINESS; Election of new officers; Reunion 2004; Teleconferencing; Award Certificates; Next Meetings; Magazine Deadline; Missoula Visitor's Center; Adjourn;
How To Evaluate The Financial Maturity Of Timber, Steven H. Bullard
How To Evaluate The Financial Maturity Of Timber, Steven H. Bullard
Faculty Publications
If you own merchantable timber, you face an important question on a continuing basis: "Should I sell my timber now or should I wait?" How you respond to this question involves many issues, of course, including stand conditions, site conditions, and other physical and biological considerations. For many landowners, however, financial considerations are also extremely important. In this article we discuss "financial maturity" as a specific tool that can be used to help evaluate timber harvest decisions.
Heartrot Fungi's Role In Creating Picid Nesting Sites In Living Aspen, J.H. Hart, D.L. Hart
Heartrot Fungi's Role In Creating Picid Nesting Sites In Living Aspen, J.H. Hart, D.L. Hart
Aspen Bibliography
To determine the number of cavity-containing aspens in old-growth (>80 years), we counted the number of stems containing cavities in 132 0.02-ha plots in Wyoming. There were 8.7 cavities/ha of aspen type. At least 84% of the cavity stems were alive when the initial cavity was constructed; 60% were alive when examined. Fruiting bodies and Phellinus tremulae (a heartrot fungus) were present on 71% of all cavity-bearing stems but on only 9.6% of all stems >15 cm d.b.h. Cavities were present in 7.7% and 0.2% of living stems with and without fruiting bodies, respectively. Average d.b.h. of cavity stems …
Meeting Minutes, April 7th, 2001, National Smokejumper Association Executive Committee
Meeting Minutes, April 7th, 2001, National Smokejumper Association Executive Committee
National Smokejumper Association Meeting Minutes
Agenda: Magazine Report.; Merchandise Report.; Video Report.; Membership Report.; Financial Report.; Evergreen Museum.; Digitizing old NSA Documents.; NSA History Book.; Web Site.; Database Protocol.; Guidelines For NSA Socials.; Upcoming June Meeting in Missoula.; Other Items.; Adjourn.;
Determining Differences In The Spatial Distribution Of Forest Structure On The Kaibab Plateau: Implications For Forest Management And The Northern Goshawk, Ryan S. Miller
Other Publications in Wildlife Management
The Kaibab Plateau, in North Central Arizona, has undergone extensive change in the last 100 years due to land management practices such as logging, road building, and fire suppression. The northern goshawk (Accipiter gentilis) has been a center of controversy, due to the potential effects of silvicultural practices on goshawk breeding habitat (Reynolds-1983, Bloom et al 1986, Kennedy 1989, Crocker-Bedford 1990). Current and past research efforts on the Kaibab Plateau have mapped Goshawk nesting territories and temporal change in nesting behavior and success. However, these research efforts have not determined how long-term spatial changes in land-use activities that have influenced …
The Chainsaw And The White Oak: From Astrobiology To Environmental Sustainability, Leo R. Finkenbinder, Dwight E. Neuenschwander
The Chainsaw And The White Oak: From Astrobiology To Environmental Sustainability, Leo R. Finkenbinder, Dwight E. Neuenschwander
Faculty Scholarship – Biology
An American biology professor befriends a Costa Rican farmer who through their relationship stops farming and forest clearing to establish a tourist and research center devoted to saving the country's cloud forest. The Chacon family's experience provides a studied model of sustainability, known in environmental circles as the "White Oak Model."
Meeting Minutes, February 17th, 2001, National Smokejumper Association Board Of Directors
Meeting Minutes, February 17th, 2001, National Smokejumper Association Board Of Directors
National Smokejumper Association Meeting Minutes
Agenda: Old Business.; Magazine Report.; Merchandise Report.; Moosehead Beer.; Evergreen Aviation Museum.; NSA Property in the Mountain Flying Museum.; Membership Report.; Trail Maintenance Program.; NSA Missoula Office.; Reunion Video.; Next Board Meeting.; New Business.; appoint Dave Bennett as Secretary/Board of Directors.; Next NSA Reunion.; Smokejumper Video.; Adjourn.; Addendum: Summary of Grangeville meeting.;
Comparative Genetics Of Seven Plants Endemic To Florida’S Lake Wales Ridge, Eric S. Menges, Rebecca W. Dolan, Rebecca Yahr, Doria R. Gordan
Comparative Genetics Of Seven Plants Endemic To Florida’S Lake Wales Ridge, Eric S. Menges, Rebecca W. Dolan, Rebecca Yahr, Doria R. Gordan
Scholarship and Professional Work - LAS
Here we submit that mathematical tools used in population viability analysis can be used in conjunction with floristic and faunistic surveys to predict changes in biogeographic range. We illustrate our point by summarizing the results of a demographic study of Lobelia boykinii. In this study we used deterministic and stochastic matrix models to estimate the growth rate and to predict the time to extinction for three populations growing in the Carolina bays. The stochastic model better discriminated among the fates of the three populations. It predicted extinction for two populations in the next 25 years but no extinction of the …
Tiger Restoration In Asia: Ecological Theory Vs. Sociological Reality, Ronald Tilson, Philip J. Nyhus, Neil Franklin
Tiger Restoration In Asia: Ecological Theory Vs. Sociological Reality, Ronald Tilson, Philip J. Nyhus, Neil Franklin
Faculty Scholarship
No abstract provided.
Crossing Methodological Boundaries: Assessing Visitor Motivations And Support For Management Actions At Yellowstone National Park Using Quantitative And Qualitative Research Approaches, William T. Borrie, Wayne A. Freimund, Mae A. Davenport, Robert E. Manning
Crossing Methodological Boundaries: Assessing Visitor Motivations And Support For Management Actions At Yellowstone National Park Using Quantitative And Qualitative Research Approaches, William T. Borrie, Wayne A. Freimund, Mae A. Davenport, Robert E. Manning
Society and Conservation Faculty Publications
Winter use of Yellowstone National Park has given rise to a complex of management issues, including rapid growth in recreation demand, environmental impacts of snowmobiling, and a string of litigation against the National Park Service (NPS) designed to both protect park resources and maintain public access (Sacklin et al. 2000). The intertwined character of these problems suggests that none can be resolved independently of the other, that policy must be comprehensive in nature, and that many sources of knowledge may be required to effect their resolution.
Forval-Online: A Web-Based Forestry Investment Tool, Clay B. Landrum, Steven H. Bullard
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 …
Does Red-Cockaded Woodpecker Excavation Of Resin Wells Increase Risk Of Bark Beetle Infestation Of Cavity Trees?, Richard N. Conner, Daniel Saenz, D. Craig Rudolph, W. G. Ross, David Kulhavy, Robert Coulson
Does Red-Cockaded Woodpecker Excavation Of Resin Wells Increase Risk Of Bark Beetle Infestation Of Cavity Trees?, Richard N. Conner, Daniel Saenz, D. Craig Rudolph, W. G. Ross, David Kulhavy, Robert Coulson
Faculty Publications
No abstract provided.
Impact Of The Texas Leaf-Cutting Ant (Atta Texana (Buckley) (Order Hymenoptera, Family Formicidae) On A Forested Landscape, David Kulhavy, L. A. Smith, W. G. Ross
Impact Of The Texas Leaf-Cutting Ant (Atta Texana (Buckley) (Order Hymenoptera, Family Formicidae) On A Forested Landscape, David Kulhavy, L. A. Smith, W. G. Ross
Faculty Publications
Atta texana (Buckley), the Texas leaf-cutting ant, rapidly expanded in a harvested forested landscape on sandhills characterized by droughty soils, causing mortality of planted loblolly pine (Pinus taeda (L.)). The site, composed primarily of Quartzipsamments soils classified as thermic coated Typic Quartzipsamments in the Tonkawa soil series, accounts for approximately 5,000 ha in Nacogdoches, Rusk, Panola, and San Augustine Counties in eastern Texas, USA (Dolezel 1980). These soils are characterized by low fertility, rapid permeability, and extreme acid reaction. These sandhills are resistant to erosion and are considered important ground water recharge areas. The distribution of A. texana central …
Reforestation Of Harvested Timberlands In Mississippi: Behavior And Attitudes Of Non-Industrial, Private Forest Landowners, J. E. Gunter, Steven H. Bullard, M. L. Doolittle, K. G. Arano
Reforestation Of Harvested Timberlands In Mississippi: Behavior And Attitudes Of Non-Industrial, Private Forest Landowners, J. E. Gunter, Steven H. Bullard, M. L. Doolittle, K. G. Arano
Faculty Publications
Southern forests play an increasingly important role in the timber economy as per capita demand for wood continues to expand. Moreover, harvest restrictions in the Pacific Northwest in the early 1990s shifted a large portion of United States demand for softwoods to the South. In Mississippi, most of the forestland is owned by non-industrial private forest (NIPF) landowners. Approximately 314,000 NIPF landowners control 66 percent of the state’s forestland base (Hartsell and London 1995). The sizable acreage of timberland held by NIPF landowners nationally and in-state underscores the importance of their role in the timber economy and weighs heavily in …
Introduction To Forestry Investment Analysis: Part I. Basic Investment Characteristics And Financial Criteria, Thomas J. Straka, Steven H. Bullard, Mark R. Dubois
Introduction To Forestry Investment Analysis: Part I. Basic Investment Characteristics And Financial Criteria, Thomas J. Straka, Steven H. Bullard, Mark R. Dubois
Faculty Publications
Many forest landowners consider their forest to be an investment. Some of these landowners, however, and many new timberland investors, may not fully understand the basic ingredients that make up a forestry investment. Like all investments, forestry involves costs and revenues, and rates of return can be calculated. These rates of return can be compared with interest rates earned for other investments, but forest landowners should be sure to understand the unique characteristics of a forestry investment. Most of the cash flow from a forestry investment will result from timber sales. Timber sale revenue, of course, is a function of …
Geospatial Analysis Of Reflectance And Ndvi Values In The Angelina Forest Ecosystem, Peter P. Siska, I-Kuai Hung
Geospatial Analysis Of Reflectance And Ndvi Values In The Angelina Forest Ecosystem, Peter P. Siska, I-Kuai Hung
Faculty Presentations
The aerial photographs and subsequently remote sensed imagery have been used for decades in classified landcover mapping, forest inventory, management, and evaluation of renewable resources. However, the implementation of geostatistical methods in remote sensing is of a newer date. In this study the variogram modeling is used to analyze the spatial structure of a forest canopy. The biomass and wood production can be evaluated in the studied area using NDVI (normalized difference vegetation index) values and kriging. The study area is located within the Angelina National Forest in the Neches River Basin. The Angelina Forest is an important part of …
Geospatial Analysis Of Reflectance And Ndvi Values In The Angelina Forest Ecosystem, I-Kuai Hung
Geospatial Analysis Of Reflectance And Ndvi Values In The Angelina Forest Ecosystem, I-Kuai Hung
Faculty Presentations
The aerial photographs and subsequently remote sensed imagery have been used for decades in classified landcover mapping, forest inventory, management, and evaluation of renewable resources. However, the implementation of geostatistical methods in remote sensing is of a newer date. In this study the variogram modeling is used to analyze the spatial structure of a forest canopy. The biomass and wood production can be evaluated in the studied area using NDVI (normalized difference vegetation index) values and kriging. The study area is located within the Angelina National Forest in the Neches River Basin. The Angelina Forest is an important part of …
An Unusually Large Number Of Eggs Laid By A Breeding Red-Cockaded Woodpecker Female, Richard N. Conner, Daniel Saenz, James R. Mccormick
An Unusually Large Number Of Eggs Laid By A Breeding Red-Cockaded Woodpecker Female, Richard N. Conner, Daniel Saenz, James R. Mccormick
Faculty Publications
The Red-cockaded Woodpecker (Picoides borealis) is a cooperatively breeding species that typically uses a single cavity for nesting (Ligon 1970, Walters et al. 1988). A single tree, or aggregation of cavity trees, termed the cluster, is inhabited by a group of woodpeckers that includes a single breeding pair and up to several helpers, which are typically male offspring of previous breeding seasons (Ligon 1970, Lennartz et al. 1987). Each group of Red-cockaded Woodpeckers usually produces one nest per breeding season, but will often nest again during the same breeding season if the first nest fails. Double clutching and …
A Red-Cockaded Woodpecker Group With Two Simultaneous Nest Trees, Richard N. Conner, James R. Mccormick, Richard R. Schaefer, Daniel Saenz, D. Craig Rudolph
A Red-Cockaded Woodpecker Group With Two Simultaneous Nest Trees, Richard N. Conner, James R. Mccormick, Richard R. Schaefer, Daniel Saenz, D. Craig Rudolph
Faculty Publications
During a study of Red-cockaded Woodpecker (Picoides borealis) nesting in eastern Texas, we discovered a single breeding pair of woodpeckers with two simultaneous nests in nest trees that were 24 m apart. Incubation of eggs in each nest tree was at least 13 d and may have been as long as 16 d. The breeding male incubated and fed a nestling in one nest tree, and the breeding female incubated and fed a nestling in the other nest tree until the nestlings were >24 d old. Prior to fledging, both the breeding male and female were observed feeding …
Species And Ecosystem Conservation: An Interdisciplinary Approach, Tim W. Clark, Michael J. Stevenson, Kim Ziegelmayer
Species And Ecosystem Conservation: An Interdisciplinary Approach, Tim W. Clark, Michael J. Stevenson, Kim Ziegelmayer
Yale School of the Environment Bulletin Series
No abstract provided.