Treesearch

Invasive plant species (IPS) are causing vast changes across the landscape. They have widespread impacts from aesthetics to agricultural and ecological damage, costing billions of dollars to mitigate. Despite their negative impacts, many are planted for erosion control and site reclamation due to their quick colonization and ability to withstand harsh environments. Additionally, these species are utilized for herbal, medicinal, and aesthetic qualities. The U.S. Department of Agriculture, Forest Service, Forest Inventory Analysis(FIA) program collects invasive plant data on both public and...

We have determined the X-ray crystallographic protein structure of endo-1,4-β-xylanase (EX) A from Anaerobacterium chartisolvens (AchXyn30A), a homologue of the recent biochemically characterized glycoside hydrolase family 30, subfamily 12 (GH30_12) EX from Acetivibrio clariflavus (AcXyn30B). The N-terminal GH30 catalytic domains (CDs) of these two enzymes share approximately 63% amino-acid sequence identity and the full-length proteins each consist of the GH30_12 CD, a family 6 carbohydrate-binding module and a C-terminal dockerin domain. In this report, we offer additional support for...

Riparian zones are important ecotones, integrating terrestrial and aquatic functions that support ecosystem productivity. A key ecological role of riparian zones is the production of large conifers that eventually enter the stream and provide important habitat complexity within the freshwater ecosystem. Many riparian zones in south-east Alaska were heavily disturbed during logging operations from 1950 to 1980, which depleted the large wood supply to streams. Abundant conifer and red alder regeneration was common after harvest, replenishing a young population of trees, but the presence of...

The COVID-19 pandemic introduced unprecedented volatility into the US manufactured wood products market, with the price of softwood lumber nearly quadrupling within a year, reaching its highest level since 1995. This paper examines the substantial price fluctuations in major wood products, focusing on Spruce-Pine-Fir and Southern Yellow Pine softwood lumber, as well as Oriented Strand Board sheathing. Using vector autoregressive and vector error correction models, this study investigates the relationships between wood product prices and various macroeconomic factors. The analysis reveals...

In historically frequent fire forests, wildfires are burning larger areas and driving forest loss across western North America, yet they also produce extensive low- to moderate-severity effects that can be leveraged to harden landscapes against future high-severity fire. Here, we operationalize prior conceptual calls by presenting a framework that identifies opportunities to leverage recent wildfire footprints via three management pathways to increasing resistance to high-severity fire: create (use burned edges as containment lines to treat adjacent unburned forest), enhance (apply...

Corrigendum (April 2026): Incorrect units of measure on table A-42 (thousand dry tons) were replaced with the correct units of measure (thousand cubic feet).This publication provides authoritative updates to the Nation’s forest resource statistics reported in “Forest Resources of the United States, 2017” and the 2020 Resources Planning Act (RPA) Assessment using adapted Forest Inventory and Analysis data. Resource data tables present estimates of forest area, volume, mortality, growth, removals, timber products output, and more in various ways within the context of changes since 1953.Downlo...

Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and non-industrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found at the National Resource Use Monitoring page: https://research.fs.usda.gov/programs/nrum.

Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and non-industrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found at the National Resource Use Monitoring page: https://research.fs.usda.gov/programs/nrum.

Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and non-industrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found at the National Resource Use Monitoring page: https://research.fs.usda.gov/programs/nrum.

Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and non-industrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found at the National Resource Use Monitoring page: https://research.fs.usda.gov/programs/nrum.