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- Bowen ratio energy balance (1)
- California salmon (1)
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- Forest fires; Burned area mapping; NOAA/AVHRR data; North America (1)
- Limits of acceptable change (1)
- Multiple linear regression (1)
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- Wildland fire decision support tools (1)
Articles 1 - 12 of 12
Full-Text Articles in Life Sciences
Developing Above-Ground Woody Biomass Equations For Open-Grown, Multiple-Stemmed Tree Species: Shelterbelt-Grown Russian-Olive, Xinhua Zhou, James R. Brandle, Michele M. Schoeneberger, Tala Awada
Developing Above-Ground Woody Biomass Equations For Open-Grown, Multiple-Stemmed Tree Species: Shelterbelt-Grown Russian-Olive, Xinhua Zhou, James R. Brandle, Michele M. Schoeneberger, Tala Awada
USDA Forest Service / UNL Faculty Publications
Multiple-stemmed tree species are often used in agricultural settings, playing a significant role in natural resource conservation and carbon sequestration. Biomass estimation, whether for modeling growth under different climate scenarios, accounting for carbon sequestered, or inclusion in natural resource inventories, requires equations that can accurately describe biomass in these species. Russian-olive (Elaeagnus angustifolia) is a common tree species used in Great Plains shelterbelts and has a growth form typical to open-grown, multiple-stemmed tree species. Using shelterbelt-grown Russian-olive, we present a procedure of choosing predictors, formulating models, and determining equations by optimizing the accuracy in above-ground woody biomass estimates …
Black Walnut, Charles Michler, Keith Woeste, Paula Pijut
Black Walnut, Charles Michler, Keith Woeste, Paula Pijut
USDA Forest Service / UNL Faculty Publications
Black walnut (Juglans nigra L.), also known as eastern black walnut or American walnut, is a fine hardwood species in the family Juglandaceae, section Rhysocaryon (Manning 1978). In general, J. nigra will not cross with species in the sections Cardiocaryon or Trachycaryonv, but J. nigra will cross with J. ailantifolia (Cardiocaryon) (Williams 1990). Juglans nigra will also hybridize to some extent with other Juglans species (Dioscaryon and Rhysocaryon), and one hybrid is recognized: J. nigra × J. regia = J. x intermedia Carr. (USDA-NRCS 2004). Native to the deciduous forests of the eastern United States …
Development And Analysis Of A 12-Year Daily 1-Km Forest Fire Dataset Across North America From Noaa/Avhrr Data, Ruiliang Pu, Zhanqing Li, Peng Gong, Ivan Csiszar, Robert Fraser, Wei-Min Hao, Shobha Kondragunta, Fuzhong Weng
Development And Analysis Of A 12-Year Daily 1-Km Forest Fire Dataset Across North America From Noaa/Avhrr Data, Ruiliang Pu, Zhanqing Li, Peng Gong, Ivan Csiszar, Robert Fraser, Wei-Min Hao, Shobha Kondragunta, Fuzhong Weng
USDA Forest Service / UNL Faculty Publications
Fires in boreal and temperate forests play a significant role in the global carbon cycle. While forest fires in North America (NA) have been surveyed extensively by U.S. and Canadian forest services, most fire records are limited to seasonal statistics without information on temporal evolution and spatial expansion. Such dynamic information is crucial for modeling fire emissions. Using the daily Advanced Very High Resolution Radiometer (AVHRR) data archived from 1989 to 2000, an extensive and consistent fire product was developed across the entire NA forest regions on a daily basis at 1-km resolution. The product was generated following data calibration, …
Delivering The Science Synthesis: Fuelstools, Anne Black, Susan Perin
Delivering The Science Synthesis: Fuelstools, Anne Black, Susan Perin
USDA Forest Service / UNL Faculty Publications
To facilitate delivery and use of the Fuels Planning: Science Synthesis and Integration Project’s (Project) products, the Project team engaged in a series of technology transfer activities throughout the life of the project. These included bringing land managers into the design and development phase, funding and staffing a specific delivery phase, and conducting an external evaluation to focus future activities. Our plans were informed by concepts central to the diffusion of the innovation theory; in turn, our activities deepened our understanding of the theory and its application to fuels management.
Pines, C. Plomion, D. Chagné, D. Pot, S. Kumar, P. L. Wilcox, R. D. Burdon, D. Prat, D. G. Peterson, J. Paiva, P. Chaumeil, G. G. Vendramin, F. Sebastiani, C. D. Nelson, C. S. Echt, O. Savolainen, T. L. Kubisiak, M. T. Cervera, N. De María, M. N. Islam-Faridi
Pines, C. Plomion, D. Chagné, D. Pot, S. Kumar, P. L. Wilcox, R. D. Burdon, D. Prat, D. G. Peterson, J. Paiva, P. Chaumeil, G. G. Vendramin, F. Sebastiani, C. D. Nelson, C. S. Echt, O. Savolainen, T. L. Kubisiak, M. T. Cervera, N. De María, M. N. Islam-Faridi
USDA Forest Service / UNL Faculty Publications
Pinus is the most important genus within the Family Pinaceae and also within the gymnosperms by the number of species (109 species recognized by Farjon 2001) and by its contribution to forest ecosystems. All pine species are evergreen trees or shrubs. They are widely distributed in the northern hemisphere, from tropical areas to northern areas in America and Eurasia. Their natural range reaches the equator only in Southeast Asia. In Africa, natural occurrences are confined to the Mediterranean basin. Pines grow at various elevations from sea level (not usual in tropical areas) to highlands. Two main regions of diversity are …
5 Fagaceae Trees, Antoine Kremer, Manuela Casasoli, Teresa Barreneche, Catherine Bodénès, Paul Sisco, Thomas Kubisiak, Marta Scalfi, Stefano Leonardi, Erica Bakker, Joukje Buiteveld, Jeanne Romero-Severson, Kathiravetpillai Arumuganathan, Jeremy Derory, Caroline Scotti-Saintagne, Guy Roussel, Maria Evangelista Bertocchi, Christian Lexer, Ilga Porth, Fred Hebard, Catherine Clark, John Carlson, Christophe Plomion, Hans-Peter Koelewijn, Fiorella Villani
5 Fagaceae Trees, Antoine Kremer, Manuela Casasoli, Teresa Barreneche, Catherine Bodénès, Paul Sisco, Thomas Kubisiak, Marta Scalfi, Stefano Leonardi, Erica Bakker, Joukje Buiteveld, Jeanne Romero-Severson, Kathiravetpillai Arumuganathan, Jeremy Derory, Caroline Scotti-Saintagne, Guy Roussel, Maria Evangelista Bertocchi, Christian Lexer, Ilga Porth, Fred Hebard, Catherine Clark, John Carlson, Christophe Plomion, Hans-Peter Koelewijn, Fiorella Villani
USDA Forest Service / UNL Faculty Publications
Worldwide, there are more than 1,000 species belonging to the Fagaceae. All Fagaceae species are woody plants and are spread throughout the northern hemisphere, from the tropical to the boreal regions. The family comprises seven genera (Govaerts and Frodin 1998), and the number of species is extremely variable among genera: Castanea (12), Castanopsis (100 to 200), Chrysolepis (2), Fagus (11), Lithocarpus (300), Quercus (450 to 600), Trigonobalanus (3).Oaks (Quercus), chestnuts (Castanea), and beeches (Fagus) are widely used in forestry for wood products over the three continents (Asia, Europe, and America) and are important economic …
Nebraska’S Forest Resources, 2007
Nebraska’S Forest Resources, 2007
USDA Forest Service / UNL Faculty Publications
This publication provides an overview of forest resource attributes for Nebraska based on an annual inventory conducted by the Forest Inventory and Analysis (FIA) program at the Northern Research Station of the U.S. Forest Service. These estimates, along with web-posted core tables, will be updated annually. For more information please refer to page 4 of this report.
Protecting Soil And Water In Forest Road Management, J. M. Grace Iii, B. D. Clinton
Protecting Soil And Water In Forest Road Management, J. M. Grace Iii, B. D. Clinton
USDA Forest Service / UNL Faculty Publications
The National Forest road system is the network that supports public recreation, which has become the primary use of the public lands. The pattern of use of National Forest roads for recreation has increased dramatically since the late 1940s and is expected to continue to increase beyond the rates observed today. However, research over the past 60 years clearly presents forest roads as a major source of sediment and soil erosion from forest watersheds. Threats to healthy forests have received increased attention in the past decade. In particular, roads, road management, and travel management will likely be critical to addressing …
Seedling Establishment And Survival On Restored Campsites In Subalpine Forest, David N. Cole
Seedling Establishment And Survival On Restored Campsites In Subalpine Forest, David N. Cole
USDA Forest Service / UNL Faculty Publications
This study experimented with common restoration techniques (scarification, soil amendments, mulch, and seeding) on six closed wilderness campsites in subalpine forests in Oregon. Effectiveness in encouraging seedling establishment, growth, and survival was assessed every year for the first 7 years following treatment. Closure and restoration of the campsites increased the density of plants established from seed. Despite an original density of virtually zero, mean density of perennial plants was 55 plants/m2 7 years after closure. All the treatments, with the exception of the biodegradable mulch mat, increased plant density. Seven years after treatment, seeding had increased plant density 5-fold, …
Giving Voice To Wildlands Visitors: Selecting Indicators To Protect And Sustain Experiences In The Eastern Arctic Of Nunavut, Alan Watson, Brian Glaspell, Neal Christensen, Paul Lachapelle, Vicki Sahanatien, Frances Gertsch
Giving Voice To Wildlands Visitors: Selecting Indicators To Protect And Sustain Experiences In The Eastern Arctic Of Nunavut, Alan Watson, Brian Glaspell, Neal Christensen, Paul Lachapelle, Vicki Sahanatien, Frances Gertsch
USDA Forest Service / UNL Faculty Publications
Many public land management agencies are committed to understanding and protecting recreation visitor experiences. Parks Canada is deeply committed to that objective for visitors to Canada’s National Parks. This 2004 study, informed by a 2003 qualitative study of visitor experiences and influences on those experiences at Auyuittuq National Park in Nunavut, worked to bring 50 potential elements of visitor experiences down to five articulated dimensions of the experience that is currently being received at this remote eastern arctic park. A hypothesized set of 17 influences on experiences, also reduced to just two factors with similar response patterns, and with some …
Evaluation Of Statistical Protocols For Quality Control Of Ecosystem Carbon Dioxide Fluxes, Jorge F. Perez-Quezada, Nicanor Z. Saliendra, William E. Emmerich, Emilio A. Laca
Evaluation Of Statistical Protocols For Quality Control Of Ecosystem Carbon Dioxide Fluxes, Jorge F. Perez-Quezada, Nicanor Z. Saliendra, William E. Emmerich, Emilio A. Laca
USDA Forest Service / UNL Faculty Publications
The process of quality control of micrometeorological and carbon dioxide (CO2) flux data can be subjective and may lack repeatability, which would undermine the results of many studies. Multivariate statistical methods and time series analysis were used together and independently to detect and replace outliers in CO2 flux data derived from a Bowen ratio energy balance system.
Ecosystem Management Decision Support (Emds) Applied To Watershed Assessment On California’S North Coast, Rich Walker, Chris Keithley, Russ Henly, Scott Downie, Steve Cannata
Ecosystem Management Decision Support (Emds) Applied To Watershed Assessment On California’S North Coast, Rich Walker, Chris Keithley, Russ Henly, Scott Downie, Steve Cannata
USDA Forest Service / UNL Faculty Publications
In 2001, the state of California initiated the North Coast Watershed Assessment Program (2003a) to assemble information on the status of coastal watersheds that have historically supported anadromous fish. The five-agency consortium explored the use of Ecosystem Management Decision Support (EMDS) (Reynolds and others 1996) as a means to help assess overall watershed and in-stream conditions for fish. EMDS is expert system software developed by the USDA Forest Service for similar efforts with the Northwest Forest Plan (2000). NCWAP developed models to help assess key watershed characteristics that contribute to shaping channel morphology and to evaluate the present stream habitat …