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  1. Estimation of Cellulose Crystallinity of Lignocelluloses Using Near-IR FT-Raman Spectroscopy and Comparison of the Raman and Segal-WAXS Methods

    Of the recently developed univariate and multivariate near-IR FT-Raman methods for estimating cellulose crystallinity, the former method was applied to a variety of lignocelluloses: softwoods, hardwoods, wood pulps, and agricultural residues/fibers. The effect of autofluorescence on the crystallinity estimation was minimized by solvent extraction or chemical treatment...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal; Richard R. Reiner; Sally A. Ralph
    Year:
    2013
    Keywords:
    cellulose crystallinity, Raman, WAXS, wood, lignocellulose, lignin
    Source:
    J. Agric. Food Chem. Volume 61, 2013; pp. 103-113.

  2. New cellulose crystallinity estimation method that differentiates between organized and crystalline phases

    A new method is proposed for estimation of cellulose crystallinity (CrI) based on 93 cm?1 Raman band in spectra of cellulose I materials. In this method (93-Raman), CrI was determined based on regression that was developed using the ratios of peak-heights of the 93 and 1096 cm?1 Raman bands (I93/I1096). For calibration...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal; Sally A. Ralph; Richard S. Reiner; Carlos Baez
    Year:
    2018
    Keywords:
    Cellulose crystallinity, Raman spectroscopy, Low frequency, Organized, Crystalline, Hydrothermal, Wood
    Source:
    Carbohydrate Polymers. 190: 262-270.

  3. Protocol for monitoring standing crop in grasslands using visual obstruction

    Assessment of standing crop on grasslands using a visual obstruction technique provides valuable information to help plan livestock grazing management and indicate the status of wildlife habitat. The objectives of this study were to: (1) develop a simple regression model using easily measured visual obstruction to estimate standing crop on sandy lowland range sites in...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Lakhdar Benkobi; Daniel W. Uresk; Greg Schenbeck; Rudy M. King
    Year:
    2000
    Keywords:
    Residual cover, grassland structure, regression model, wildlife habitat, Robel pole, Nebraska Sandhills
    Source:
    Journal of range management 53(6): p. 627-633

  4. Impacts of fiber orientation and milling on observed crystallinity in jack pine

    Influences of fiber orientation and milling on wood cellulose crystallinity were studied using jack pine wood. The fiber orientation effects were measured by sampling rectangular wood blocks in radial, tangential, and cross-sectional orientations. The influence of milling was studied by analyzing the unsieved and sieved milled wood fractions (all

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal; Sally A. Ralph; Richard S. Reiner; Roderquita K. Moore; Carlos Baez
    Year:
    2014
    Keywords:
    wood crystallinigy, fiber orientation, mechanical degradation, raman, x-ray, WAXS
    Source:
    Wood Sci Technol, February 6, 2014; 15 p.

  5. Roost sites of radio-marked Mexican spotted owls in Arizona and New Mexico: sources of variability and descriptive characteristics

    To increase understanding of roosting habitat of Mexican Spotted Owls (Strix occidentalis lucida) and factors that influence use of roosting habitat, we sampled habitat characteristics at 1790 sites used for roosting by 28 radio-marked Mexican Spotted Owls in three study areas in Arizona and New Mexico. We explored potential patterns of variation in...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Joseph L. Ganey; William M. Block; Rudy M. King
    Year:
    2000
    Keywords:
    Mexacan Spotted Owl, Strix occidentalis lucida, Arizona, New Mexico, radiotelemtry, repeated measures, roost sites, sources of variation
    Source:
    Journal of raptor research. 34(4): 270-278

  6. Estimation of syringyl units in wood lignins by FT-Raman spectroscopy

    Syringyl (S) lignin content and the syringyl-to-guaiacyl (S/G) lignin ratio are important characteristics of wood and lignocellulosic biomass. Although numerous methods are available for estimating S lignin units and the S/G ratio, in this work, a new method based on Raman spectroscopy that uses the 370 cm?1 Raman band-area intensity (370-area)...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal; Sally A. Ralph; Dharshana Padmakshan; Sarah Liu; Cliff E. Foster
    Year:
    2019
    Keywords:
    Cell wall, DFRC, NMR, syringyl-to-guaiacyl lignin ratio, percent syringyl, thioacydolysis
    Source:
    Journal of Agricultural and Food Chemistry. 67(15): 4367-4374.

  7. Estimation of S/G ratio in woods using 1064 nm FT-Raman spectroscopy

    Two simple methods based on the 370 cm-1 Raman band intensity were developed for estimation of syringyl-to-guaiacyl (S/G) ratio in woods. The methods, in principle, are representative of the whole cell wall lignin and not just the portion of lignin that gets cleaved to release monomers, for example, during certain S/G chemical analyses. As such,...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal; Sally A. Ralph; Dharshana Padmakshan; Sarah Liu; Steven D. Karlen; Cliff Foster; John Ralph
    Year:
    2015
    Keywords:
    cell wall, DFRC, Guaiacyl lignin, NMR, Raman, S/G ratio, Syringyl lignin, Thioacidolysis
    Source:
    Proceedings of the 18th ISWFPC (International Symposium on Wood, Fiber, and Pulping Chemistry) held in Vienna (Sept 9 -11, 2015). 2015; pp. 333-336.

  8. Raman spectroscopy in the analysis of cellulose nanomaterials

    Cellulose nanomaterials (CNs) are new types of materials derived from celluloses and offer unique challenges and opportunities for Raman spectroscopic investigations. CNs can be classified into the categories of cellulose nanocrystals (CNCs, also known as cellulose whisker) and cellulose nanofibrils (CNFs, also known as nanofibrillated cellulose or NFCs) which when...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal
    Year:
    2017
    Keywords:
    Cellulose, nanomaterials, crystallinity, Raman spectroscopy, accessibility
    Source:
    In: Nanocelluloses: their preparation, properties, and applications, ACS symposium series. Washington, D.C.: American Chemical Society: 75-91. Chapter 4.

  9. Creating a stage-based deterministic PVA model - the western prairie fringed orchid [Exercise 12]

    Contemporary efforts to conserve populations and species often employ population viability analysis (PVA), a specific application of population modeling that estimates the effects of environmental and demographic processes on population growth rates. These models can also be used to estimate probabilities that a population will fall below a certain level. This...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Carolyn Hull Sieg; Rudy M. King; Fred Van Dyke
    Year:
    2003
    Keywords:
    population viability analysis (PVA), western prairie fringed orchid, estimate, population
    Source:
    In: Van Dyke, Fred, ed. A Workbook In Conservation: Solving Practical Problems in Conservation. New York, NY: McGraw-Hill. p. 91-99.

  10. An empirical, integrated forest biomass monitoring system

    The fate of live forest biomass is largely controlled by growth and disturbance processes, both natural and anthropogenic. Thus, biomass monitoring strategies must characterize both the biomass of the forests at a given point in time and the dynamic processes that change it. Here, we describe and test an empirical monitoring system designed to meet those needs. Our...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Robert Kennedy; Janet Ohmann; Matt Gregory; Heather Roberts; Zhiqiang Yang; David Bell; Van Kane; M Joseph Hughes; Warren Cohen; Scott Powell; Neeti Neeti; Tara Larrue; Sam Hooper; Jonathan Kane; David Miller; James Perkins; Justin Braaten; Rupert Seidl
    Year:
    2018
    Keywords:
    Forest biomass, Landsat, forest inventory, lidar, monitoring, disturbance.
    Source:
    Environmental Research Letters. 13(2): 025004-.

  11. Wildlife habitats of the north coast of California: new techniques for extensive forest inventory.

    A study was undertaken to develop methods for extensive inventory and analysis of wildlife habitats. The objective was to provide information about amounts and conditions of wildlife habitats from extensive, sample based inventories so that wildlife can be better considered in forest planning and policy decisions at the regional scale. The new analytical approach...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Janet L. Ohmann
    Year:
    1992
    Keywords:
    Wildlife-habitat relationships, multiresource inventory, forest inventory, wildlife habitat assessment, snags, California (north coast)
    Source:
    Res. Pap. PNW-RP-440. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 48 p

  12. Effect of sample moisture content on XRD-estimated cellulose crystallinity index and crystallite size

    Although X-ray diffraction (XRD) has been the most widely used technique to investigate crystallinity index (CrI) and crystallite size (L200) of cellulose materials, there are not many studies that have taken into account the role of sample moisture on these measurements. The present investigation focuses on a variety of celluloses and cellulose...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal; Sally A. Ralph; Carlos Baez; Richard S. Reiner; Steve P. Verrill
    Year:
    2017
    Keywords:
    Cellulose, X-ray diffraction, crystallinity, crystallite size, moisture
    Source:
    Cellulose. 24(5): 1971-1984.

  13. Northwest Forest Plan–the first 15 years (1994–2008): status and trends of late-successional and old-growth forests

    Late-successional and old-growth (LSOG) monitoring characterizes the status and trends of older forests to answer such questions as: How much older forest is there? Where is it? How much has changed and from what causes? Is the Northwest Forest Plan (the Plan) maintaining or restoring older forest ecosystems to desired conditions on federal lands in the Plan area? This...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Melinda Moeur; Janet L. Ohmann; Robert E. Kennedy; Warren B. Cohen; Matthew J. Gregory; Zhiqiang Yang; Heather M. Roberts; Thomas A. Spies; Maria Fiorella
    Year:
    2011
    Keywords:
    Old growth, forest monitoring, Gradient Nearest Neighbor imputation, LandTrendr change detection, Pacific Northwest
    Source:
    Gen. Tech. Rep. PNW-GTR-853. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 48 p.

  14. Mapping ecological systems with a random forest model: tradeoffs between errors and bias

    New methods for predictive vegetation mapping allow improved estimations of plant community composition across large regions. Random Forest (RF) models limit over-fitting problems of other methods, and are known for making accurate classification predictions from noisy, nonnormal data, but can be biased when plot samples are unbalanced. We developed two contrasting...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Emilie Grossmann; Janet Ohmann; James Kagan; Heather May; Matthew Gregory
    Year:
    2010
    Keywords:
    Biogeography, environmental gradients, vegetation types, landscape analysis, vegetation modeling
    Source:
    Gap Analysis Bulletin. 17: 16-22

  15. Species distribution modelling for plant communities: Stacked single species or multivariate modelling approaches?

    Landscape management and conservation planning require maps of vegetation composition and structure over large regions. Species distribution models (SDMs) are often used for individual species, but projects mapping multiple species are rarer. We compare maps of plant community composition assembled by stacking results from many SDMs with multivariate maps constructed...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Emilie B. Henderson; Janet L. Ohmann; Matthew J. Gregory; Heather M. Roberts; Harold S.J. Zald
    Year:
    2014
    Keywords:
    Nearest-neighbor imputation, Plant community composition, Random forest, Species distribution modelling, Vegetation mapping, Western Oregon
    Source:
    Applied Vegetation Science

  16. Rock glaciers and related periglacial landforms in the Sierra Nevada, CA, USA; inventory, distribution and climatic relationships

    Rock glaciers and related periglacial rock-ice features (RIFs) are abundant yet overlooked landforms in the Sierra Nevada, California, where they occur in diverse forms. We mapped 421 RIFs from field surveys, and grouped these into six classes based on morphology and location. These categories comprise a greater range of frozen-ground features than are commonly...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Constance I. Millar; Robert D. Westfall
    Year:
    2008
    Keywords:
    Source:
    Quaternary International 188: 90-104

  17. Quantification of live aboveground forest biomass dynamics with Landsat time-series and field inventory data: A comparison of empirical modeling approaches

    Spatially and temporally explicit knowledge of biomass dynamics at broad scales is critical to understanding how forest disturbance and regrowth processes influence carbon dynamics. We modeled live, aboveground tree biomass using Forest Inventory and Analysis (FIA) field data and applied the models to 20+ year time-series of Landsat satellite imagery to...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Scott L. Powell; Warren B. Cohen; Sean P. Healey; Robert E. Kennedy; Gretchen G. Moisen; Kenneth B. Pierce; Janet L. Ohmann
    Year:
    2010
    Keywords:
    biomass, Landsat, FIA, disturbance, curve-fitting, random forests
    Source:
    Remote Sensing of Environment. 114(5): 1053-1068.

  18. Northwest Forest Plan–the first 20 years (1994-2013): status and trends of late-successional and old-growth forests

    This is the third in a series of periodic monitoring reports on LSOG or latesuccessional and old-growth (older) forest status trends on federally administered lands since implementation of the Northwest Forest Plan (NWFP or the Plan) in 1994. The objective of this monitoring is to determine if the NWFP is providing for conservation and management of older forests as...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Raymond J. Davis; Janet L. Ohmann; Robert E. Kennedy; Warren B. Cohen; Matthew J. Gregory; Zhiqiang Yang; Heather M. Roberts; Andrew N. Gray; Thomas A. Spies
    Year:
    2015
    Keywords:
    Northwest Forest Plan, effectiveness monitoring, late-successional and old-growth forests, Gradient Nearest Neighbor imputation, LandTrendr change detection, Forest Service, Bureau of Land Management, late-successional reserves, physiographic provinces.
    Source:
    Gen. Tech. Rep. PNW-GTR-911. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 112 p.

  19. Allozyme markers in forest genetic conservation

    Genetic diversity is important in tree-breeding, in managing rare and endangered tree species, and in maintaining healthy populations of widespread native tree species. Allozymes are useful in determining genetic relationships among species, where they can be used to assess affiliations of rare taxa and predict relative endangerment among species. Because allozymes...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Constance I. Millar; R. D. Westfall
    Year:
    1992
    Keywords:
    genetic diversity, isozymes, rare and endangered species, in-situ conservation, ex-situ conservation
    Source:
    New Forests 6: 347-371

  20. Raman spectroscopy of CNC-and CNF-based nanocomposites

    In this chapter, applications of Raman spectroscopy to nanocelluloses and nanocellulose composites are reviewed, and it is shown how use of various techniques in Raman can provide unique information. Some of the most important uses consisted of identification of cellulose nanomaterials, estimation of cellulose crystallinity, study of dispersion of cellulose...

    https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Kovalev%2C%20Vladimir%22&%3Bf%5B0%5D=nrt_combined%3A%22Inventory%2C%20Monitoring%2C%20%26%20Analysis%20%21Resource%20inventory%22&f%5B0%5D=author_facet%3A%22King%2C%20Rudy%22&f%5B1%5D=author_facet%3A%22Ohmann%2C%20Janet%22&f%5B2%5D=author_facet%3A%22Millar%2C%20Constance%22&f%5B3%5D=author_facet%3A%22Agarwal%2C%20Umesh%22&f%5B4%5D=author_facet%3A%22Brown%2C%20Robert%22

    Author(s):
    Umesh P. Agarwal
    Year:
    2017
    Keywords:
    Raman spectroscopy, nanocellulose, nanocomposite, cellulose nanocrystal, cellulose nanofibril
    Source:
    In: Handbook of Nanocellulose and Cellulose Nanocomposites. John Wiley & Sons: 609-625. Chapter 18.

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