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2009

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Articles 1 - 30 of 440

Full-Text Articles in Forest Sciences

Investing In Maine Research Infrastructure: Sustainable Forest Bioproducts, Michael Eckardt, Stephen Shaler, Hemant P. Pendse, Adriaan R. P. Van Heiningen, Robert G. Wagner Dec 2009

Investing In Maine Research Infrastructure: Sustainable Forest Bioproducts, Michael Eckardt, Stephen Shaler, Hemant P. Pendse, Adriaan R. P. Van Heiningen, Robert G. Wagner

University of Maine Office of Research Administration: Grant Reports

The University of Maine, the University of Southern Maine, several baccalaureate institutions in the state, along with other federal, state and local public, private, and non-profit institutions will collaborate to create the Forest Bioproducts Research Institute (FBRI) at the University of Maine. The vision of the FBRI is to advance understanding about the scientific underpinnings, system behavior, and policy implications for the production of forest-based bioproducts that meet societal needs for materials, chemicals, and fuels in an economically and ecologically sustainable manner.

The research plans Integrate three themes. They are (1) forest sustainability modeling of life cycle assessment, (2) integrated …

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Smokejumper Obituary: Herred, Doy A. (Missoula 1946), National Smokejumper Association Dec 2009

Smokejumper Obituary: Herred, Doy A. (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Ewing, Shane Allen (Missoula 2004), National Smokejumper Association Dec 2009

Smokejumper Obituary: Ewing, Shane Allen (Missoula 2004), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Dwight, George H. (Missoula 1950), National Smokejumper Association Dec 2009

Smokejumper Obituary: Dwight, George H. (Missoula 1950), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Gassner, Richard (Redmond 1968), National Smokejumper Association Dec 2009

Smokejumper Obituary: Gassner, Richard (Redmond 1968), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Whitmarsh, Donald Oliver (Missoula 1942), National Smokejumper Association Dec 2009

Smokejumper Obituary: Whitmarsh, Donald Oliver (Missoula 1942), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Tree Mortality Following Prescribed Fire And A Storm Surge Event In Slash Pine (Pinus Elliottii Var. Densa) Forests In The Florida Keys, Usa, Jay P. Sah, Michael S. Ross, James R. Snyder, Danielle E. Ogurcak Dec 2009

Tree Mortality Following Prescribed Fire And A Storm Surge Event In Slash Pine (Pinus Elliottii Var. Densa) Forests In The Florida Keys, Usa, Jay P. Sah, Michael S. Ross, James R. Snyder, Danielle E. Ogurcak

Department of Earth and Environment

In fire-dependent forests, managers are interested in predicting the consequences of prescribed burning on postfire tree mortality. We examined the effects of prescribed fire on tree mortality in Florida Keys pine forests, using a factorial design with understory type, season, and year of burn as factors. We also used logistic regression to model the effects of burn season, fire severity, and tree dimensions on individual tree mortality. Despite limited statistical power due to problems in carrying out the full suite of planned experimental burns, associations with tree and fire variables were observed. Post-fire pine tree mortality was negatively correlated with …

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Smokejumper Obituary: Ladendorff, Edmund (Missoula 1946), National Smokejumper Association Dec 2009

Smokejumper Obituary: Ladendorff, Edmund (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Sullivan, Jerry (North Cascades 1949), National Smokejumper Association Dec 2009

Smokejumper Obituary: Sullivan, Jerry (North Cascades 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Fessler, Loren W. (Missoula 1946), National Smokejumper Association Dec 2009

Smokejumper Obituary: Fessler, Loren W. (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Marshall, Thomas Wiaotte (Missoula 1949), National Smokejumper Association Dec 2009

Smokejumper Obituary: Marshall, Thomas Wiaotte (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Pb1772 A Hardwood Log Grading Handbook, The University Of Tennessee Agricultural Extension Service Dec 2009

Pb1772 A Hardwood Log Grading Handbook, The University Of Tennessee Agricultural Extension Service

Forestry, Trees, and Timber

A good understanding of log valuation will help landowners, loggers, log buyers and saw millers agree on the fair value for a load of logs. This handbook briefly summarizes common log grading rules for hardwoods. Basic concepts in log scaling, lumber grading and log bucking optimization are also discussed because each of these topics relates to log grading.

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Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2007 And Revised Estimates For 2006, Nathan Kemper, Jennie Popp, Wayne Miller Dec 2009

Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2007 And Revised Estimates For 2006, Nathan Kemper, Jennie Popp, Wayne Miller

Research Reports and Research Bulletins

This report is the fourth in a series of reports examining agriculture’s economic contribution on the Arkansas economy. Utilizing data from the United States Bureau of Economic Analysis, USDA Economics Research Service, USDA National Agricultural Statistics Service, and Minnesota IMPLAN Group, Inc., the economic contribution of agriculture on the Arkansas economy was estimated for the most recent year available, 2007. Gross Domestic Product (GDP) by State information for Arkansas was compared with those of other states in the southeast U.S. to give a measure of the relative importance of agriculture in Arkansas. The total economic contribution of agriculture (direct, indirect, …

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Forest Change And Balsam Woolly Adelgig Infestation In High Elevation Forests Of Mt. Mitchell, North Carolina., Laura Lusk Dec 2009

Forest Change And Balsam Woolly Adelgig Infestation In High Elevation Forests Of Mt. Mitchell, North Carolina., Laura Lusk

Undergraduate Honors Theses

The Black Mountain range of western North Carolina supports some of the most extensive, but threatened high elevation forests in the southern Appalachians. Of particular note, the insect pathogen, balsam woolly adelgid (Adelges piceae Ratzeburg) has been present on Mt. Mitchell for over fifty years. In anticipation of potential changes in forest composition, vegetation surveys were first conducted in 1966 on nine one-acre plots near the summit of Mt. Mitchell. These plots were re-surveyed in 1978, 1985 and 2002. The purpose of this study was to re-census those plots and use those data to analyze long-term trends in forest …

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Transferability Of Simple Sequence Repeat (Ssr) Markers Developed In Litchi Chinensis To Blighia Sapida (Sapindaceae), Marius R.M. Ekué, Oliver Gailing, Reiner Finkeldey Dec 2009

Transferability Of Simple Sequence Repeat (Ssr) Markers Developed In Litchi Chinensis To Blighia Sapida (Sapindaceae), Marius R.M. Ekué, Oliver Gailing, Reiner Finkeldey

Michigan Tech Publications

Ackee (Blighia sapida, Sapindaceae) is a multipurpose fruit tree species of high economic importance, native to the Guinean forests of West Africa, and belongs to the same family as that of lychee (Litchi chinensis). In this study, a set of 12 primer pairs for simple sequence repeats (SSRs) previously developed for lychee has been evaluated for polymorphism in 16 ackee trees from different populations. Seven primer pairs have been found to be transferable, and four have revealed polymorphisms. However, the average number of alleles per locus has dropped from 4.9 for lychee to 3.7 for ackee. Characterization of the four …

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Disturbance Ecology And Vegetation Dynamics At Varying Spatial And Temporal Scales In Southern Rocky Mountain Engelmann Spruce Forests, R. Justin Derose Dec 2009

Disturbance Ecology And Vegetation Dynamics At Varying Spatial And Temporal Scales In Southern Rocky Mountain Engelmann Spruce Forests, R. Justin Derose

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

High-severity disturbances are the primary drivers of Engelmann spruce-subalpine fir ecosystems in the southern Rocky Mountain. Recently, an unprecedented, landscape-wide (at least 250 km2) spruce beetle outbreak killed virtually all the Engelmann spruce on the Markagunt Plateau in southwestern Utah, USA. Results from dendroecological analyses suggested the combination of antecedent disturbance history and drought-driven stand development was responsible for creating suitable host conditions prior to the recent outbreak. Multiple and consistent lines of evidence suggested mixed- and high-severity fires shaped the development of the Markagunt Plateau. Subsequent stand development, influenced by species-specific differential tree-ring response to drought, resulted in the …

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Analysis Of A Pinus Radiata Seed Stock Field In The Native Año Nuevo Stand In California, Christina Brassey Dec 2009

Analysis Of A Pinus Radiata Seed Stock Field In The Native Año Nuevo Stand In California, Christina Brassey

Master's Theses

This study was a part of the international collaborative IMPACT project, which aims to address the potential threat that the pitch canker disease poses to the use of Pinus radiata D. Don in plantations in New Zealand, Australia, and Chile. A field trial of 264 seedstocks was planted adjacent to a native stand of pitch canker infected P. radiata on the central coast of California, and disease symptom development was recorded over a period of 3 years. The results did not correlate with a greenhouse study of the same seedstocks inoculated with Fusarium circinatum Nirenberg & O'Donnell, the causal agent …

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Using Plant Functional Attributes To Quantify Site Productivity And Growth Patterns In Mixed Forests, Jerome K. Vanclay, A N. Gillison, Rod J. Keenan Nov 2009

Using Plant Functional Attributes To Quantify Site Productivity And Growth Patterns In Mixed Forests, Jerome K. Vanclay, A N. Gillison, Rod J. Keenan

Professor Jerome K Vanclay

Forest growth models are one of several important prerequisites for sustainable management. The complexity of tropical moist forest means that there is often little objective information to classify sites and species for growth modelling and yield prediction. Classification based on observable morphological characteristics may be a useful surrogate for, or supplement to other alternatives. This study investigated the utility of plant functional attributes (PFAs) for site and species classification. PFAs describe a plant in terms of its photosynthetic and vascular support system, and the sum of individual PFAs for all species on a plot provides an efficient summary of vegetation …

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Improving Productivity In Mixed-Species Plantations, Mila Bristow, J Doland Nichols, Jerome K. Vanclay Nov 2009

Improving Productivity In Mixed-Species Plantations, Mila Bristow, J Doland Nichols, Jerome K. Vanclay

Professor Jerome K Vanclay

Mixed species plantations are often promoted as being environmentally preferable to monocultures, but are rarely considered operationally viable by commercial forest growers. Despite many publications documenting benefits demonstrated in research studies (e.g., Kelty 2006; Forrester et al. 2006b; Wood and Vanclay 1995), and despite continuing calls from a wide range of advocates for mixed-species plantations, polyculture remains the exception rather than the rule in industrial plantation forestry (Nichols et al 2006)...

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Calibrating The Self-Thinning Frontier, Jerome K. Vanclay, Peter J. Sands Nov 2009

Calibrating The Self-Thinning Frontier, Jerome K. Vanclay, Peter J. Sands

Professor Jerome K Vanclay

Calibration of the self-thinning frontier in even-aged monocultures is hampered by scarce data and by subjective decisions about the proximity of data to the frontier. We present a simple model that applies to observations of the full trajectory of stand mean diameter across a range of densities not necessarily close to the frontier. Development of the model is based on a consideration of the slope s = ln(Nt/Nt−1)/ln(Dt/Dt−1) of a log-transformed plot of stocking Nt and mean stem diameter Dt at time t. This avoids the need for subjective decisions about limiting density and allows the use of abundant data …

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Lessons From The Queensland Rainforests: Steps Towards Sustainability, Jerome K. Vanclay Nov 2009

Lessons From The Queensland Rainforests: Steps Towards Sustainability, Jerome K. Vanclay

Professor Jerome K Vanclay

Commercial timber harvesting commenced in the tropical rainforests of north Queensland in 1873 and ceased in 1988 following their inclusion on the World Heritage List. The evolution of forest policy, management and research is reviewed, and strengths and weaknesses are highlighted. Between 1950-85, eight estimates of the sustainable yield varied ten-fold. Discrepancies were due to different assumptions regarding management, and to errors in estimating net productive areas and growth rates. During 1950-85, the allowable cut (130,000-207,000 m3/ann) exceeded sustained yield estimates (60,000-180,000 m3/ann), but the actual harvest (90,000-205,000 m3/ann) remained less than the allowable cut. The allowable cut was reduced …

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Participation And Model-Building: Lessons Learned From The Bukittinggi Workshop, Jerome K. Vanclay, Mandy Haggith, Carol J. Pierce Colfer Nov 2009

Participation And Model-Building: Lessons Learned From The Bukittinggi Workshop, Jerome K. Vanclay, Mandy Haggith, Carol J. Pierce Colfer

Professor Jerome K Vanclay

FLORES (the Forest Land Oriented Resource Envisioning System) was initially constructed by 50 people during a multidisciplinary workshop in Bukittinggi, Sumatra, in 1999. It proved that a model of a complex system could be constructed in a participatory way by a diverse team; that it could be done with a graphically-based package such as Simile; and that the resulting model could remain reasonably accessible to all participants, and could run on an ordinary notebook computer. Many useful insights can be gained through building such a model, and subsequent experience has demonstrated that modelling in this way can foster continuing interdisciplinary …

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Zimflores: A Model To Advise Co-Management Of The Mafungautsi Forest In Zimbabwe, Ravi Prabhu, Mandy Haggith, Happyson Mudavanhu, Robert Muetzelfeldt, Wavell Standa-Gunda, Jerome K. Vanclay Nov 2009

Zimflores: A Model To Advise Co-Management Of The Mafungautsi Forest In Zimbabwe, Ravi Prabhu, Mandy Haggith, Happyson Mudavanhu, Robert Muetzelfeldt, Wavell Standa-Gunda, Jerome K. Vanclay

Professor Jerome K Vanclay

ZimFlores (version 4) is the outcome of a participatory modelling process and seeks to provide a shared factual basis for exploring land-use options for the communal lands surrounding the Mafungautsi forest. The ZimFlores experience underscores the importance of a sharing a common problem and a common location in which all participants have an interest. Participatory modelling has proved an effective way to consolidate a diverse body of knowledge and make it accessible. Results demonstrate the importance of model outputs that are diagnostic, and which offer insights into the issues under consideration.

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Modelling Interactions Amongst People And Forest Resources At The Landscape Scale, Jerome K. Vanclay, Fergus L. Sinclair, Ravi Prabhu Nov 2009

Modelling Interactions Amongst People And Forest Resources At The Landscape Scale, Jerome K. Vanclay, Fergus L. Sinclair, Ravi Prabhu

Professor Jerome K Vanclay

FLORES, the Forest Land Oriented Resource Envisioning System, is a framework to facilitate quantitative modelling of ecological, economic and social issues at the landscape scale. This issue of Small-scale Forest Economics, Management and Policy describes the evolution of FLORES from a concept to a series of models calibrated for diverse locations, and documents the lessons learned.....

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Multi-Agent Simulation Of Alternative Scenarios Of Collaborative Forest Management, Herry Purnomo, Yurdi Yasmi, Ravi Prabhu, Linda Yuliani, Hari Priyadi, Jerome K. Vanclay Nov 2009

Multi-Agent Simulation Of Alternative Scenarios Of Collaborative Forest Management, Herry Purnomo, Yurdi Yasmi, Ravi Prabhu, Linda Yuliani, Hari Priyadi, Jerome K. Vanclay

Professor Jerome K Vanclay

International calls for sustainable development advocate that forest management should be carried out in a multi-stakeholder environment. The importance of community participation is acknowledged in theIndonesian Act No. 41 on Forestry (1999). However, it is not clear how to achieve this in areas already allocated to a concession holder. Current regulations offer little flexibility for concessionaires to develop site-specific management, or to involve local communities in forest management. The research reported here examines the application of simulation techniques to explore scenarios of sustainable forest management addressing those limitations. Several scenarios have been developed using multi-agent simulation to examine social and …

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Participatory Modelling To Enhance Social Learning, Collective Action And Mobilization Among Users Of The Mafungautsi Forest, Zimbabwe, Wavell Standa-Gunda, Tendayi Mutimukuru, Richard Nyirenda, Ravi Prabhu, Mandy Haggith, Jerome K. Vanclay Nov 2009

Participatory Modelling To Enhance Social Learning, Collective Action And Mobilization Among Users Of The Mafungautsi Forest, Zimbabwe, Wavell Standa-Gunda, Tendayi Mutimukuru, Richard Nyirenda, Ravi Prabhu, Mandy Haggith, Jerome K. Vanclay

Professor Jerome K Vanclay

Participatory modelling can be a useful process to encourage critical examination of livelihood options and foster sustainable natural resource use through enhanced social learning, collective action and mobilization. The broom-grass group in the Mafungautsi Forest Reserve serves as a case study of the process and outcomes of such participatory modelling. Innovative group facilitation methods enhanced participation in the modelling process. The modelling process complements broader efforts to achieve higher levels of adaptive collaborative management.

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Explore It! Building The Next Generation Of Sustainable Energy Researchers, Darrell W. Donahue, David J. Neivandt Nov 2009

Explore It! Building The Next Generation Of Sustainable Energy Researchers, Darrell W. Donahue, David J. Neivandt

University of Maine Office of Research Administration: Grant Reports

This award will establish an REU Site at the University of Maine. The program will engage 10 undergraduates each year for three years in a 10-week summer research experience. This REU site will leverage a focus area represented by the newly established University of Maine Forest Bio-products Research Institute (FBRI). Undergraduate students will conduct research advancing their knowledge of sustainable forest bio-products and will gain a detailed understanding of one of the thematic elements of the research effort as well as a broad understanding of all areas, specifically: 1) sustainable and life cycle analysis; 2) solids extraction/modification; 3) process control …

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Assessing The Sustainability Of Timber Harvests From Natural Forests: Limitations Of Indices Based On Successive Harvests, Jerome K. Vanclay Nov 2009

Assessing The Sustainability Of Timber Harvests From Natural Forests: Limitations Of Indices Based On Successive Harvests, Jerome K. Vanclay

Professor Jerome K Vanclay

The concepts of sustainable original harvest (SOH) and sustainable disturbance harvest (SDH), and simple indices such as the ratio of successive harvests do not provide a reliable indication of the sustainability of a harvest. Some limitations of these concepts are illustrated in the context of selection harvesting of timber from natural forests. Four models are used to demonstrate that maintaining an SOH or SDH indicates little about the long-term sustainability of a timber harvest. The concepts may offer greater utility in evenaged systems harvested by clear-felling, but still suffer the limitation that many factors may mask any change in site …

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Ecological Sensitivity Of Australian Rainforests To Selective Logging, Jerome K. Vanclay Nov 2009

Ecological Sensitivity Of Australian Rainforests To Selective Logging, Jerome K. Vanclay

Professor Jerome K Vanclay

Horne and Hickey (1991) raised some matters which may warrant further clarification. Although about 50% of the rainforest between Cooktown and Ingham in north Queensland is reserved as State Forest or Timber Reserve, it should not be assumed that all of this area is managed for timber production. In 1988 most of this area was inscribed on the World Heritage List and further logging was banned. Prior to this, a gross area of about 20% (of total rainforest area or 40% of SF & TR) was selectively logged. Within this gross area, about 4% (of the total or 20% of …

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Sustainable Harvesting Of Tropical Rainforests: Reply To Keto, Scott And Olsen, Jerome K. Vanclay, E J. Rudder, Glenn Dale, G A. Blake Nov 2009

Sustainable Harvesting Of Tropical Rainforests: Reply To Keto, Scott And Olsen, Jerome K. Vanclay, E J. Rudder, Glenn Dale, G A. Blake

Professor Jerome K Vanclay

This paper refutes the Keto et al. proposition that the Queensland selection logging system is neither ecologically nor economically sustainable. The key requirements of this system are: (1) that logging guidelines are sympathetic to the silvicultural characteristics of the forest, ensuring adequate regeneration of commercial species and discouraging invasion by weeds; (2) tree-marking by trained staff specifies trees to be retained, trees to be removed and the direction of felling to ensure minimal damage to the residual stand; (3) logging equipment is appropriate and driven by trained operators to ensure minimal damage and soil disturbance, compaction and erosion; (4) prescriptions …

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