Treesearch

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 nonindustrial 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 here: https://www.fs.usda.gov/research/programs/nrum.

China’s unprecedented forest-based ecological engineering programs over the past several decades present a unique opportunity to understand forest-water interactions at a large scale. This review synthesizes advances of forest hydrological studies in China in the context of dramatic forest cover recovery, hydrologic change, and a shift in land management policy. We review current monitoring networks and research tools and key ecohydrological processes influenced by massive national forestation, including increases in evapotranspiration and carbon sequestration, decline in total water...

The biodiversity crisis necessitates spatially extensive methods to monitor multiple taxonomic groups for evidence of change in response to evolving environmental conditions. Programs that combine passive acoustic monitoring and machine learning are increasingly used to meet this need. These methods require large, annotated datasets, which are time-consuming and expensive to produce, creating potential barriers to adoption in data- and funding-poor regions. Recently released pre-trained avian acoustic classification models provide opportunities to reduce the need for manual labelling and...

Fuel breaks, areas where vegetation has been modified or removed, are a common feature on national forests in southern California and elsewhere. They provide accessible locations for ground-based firefighters to perform fire-suppression activities. However, the cost to maintain nearly 4,000 miles of fuel breaks in southern California exceeds available funding, and the effectiveness of the fuel breaks varies. From 2012–2016, the Adaptive Management Services Enterprise Team (AMSET) developed and applied a process to the Angeles, Cleveland, Los Padres, and San Bernardino National Forests to...

Land managers use hazard (susceptibility) and risk rating systems to guide the application of forest management treatments that aim to reduce future damages to forests. Rating systems are typically designed for individual damage agents, but tree mortality often results from multiple agents without a clear proximate cause. In interior Douglas‐fir (DF, Pseudotsuga menziesii var. glauca ) forests in the Northern Rocky Mountains, USA, multiple damage agents are commonly associated with DF tree mortality, such as insects, disease, weather, and fire. We investigated how recent DF tree mortality...

Spruce beetle, Dendroctonus rufipennis (Kirby) (Coleoptera: Curculionidae), is the most significant pest of spruce, Picea spp. (Pinales: Pinaceae), in western North America. Several doses of 3-methylcyclohex-2-en-1-one (MCH), the primary antiaggregation pheromone of D. rufipennis, alone and combined with non-host volatiles have been demonstrated effective for Picea protection. Herein, we evaluate the effects of MCH dose on D. rufipennis captures in baited trapping assays in Alaska and Colorado, United States. Twenty-five, 12-unit, multiple-funnel traps were baited with a D. rufipennis lure...

The return of wolves to the American West has renewed historic conflicts on national forests. Wolves now share space with livestock across millions of acres of federal land. Forest Service research social scientists studied six national forests with wolves and livestock in six Western states. They interviewed Forest Service range management specialists, wildlife managers, and other stakeholders to understand how wolf-livestock conflicts are managed.They found that these conflicts are embedded in larger issues: rural-urban divides, federal versus state management authority, economic...

Tropical second-growth forests of the Amazon sequester large amounts of carbon and are important carbon sinks, contributing substantially to climate change mitigation, biodiversity conservation, and providing crucial ecosystem services. Deforestation due to selective logging and shifting cultivation is expanding second-growth forest areas in tropical forest regions, which if well managed, regenerate rapidly over time. Maximum forest canopy height is an important metric of biomass and carbon accumulation in second-growth forests and is strongly influenced by water availability. The water...

Water resource managers need Streamflow Duration Assessment Methods (SDAMs) to predict if streams are ephemeral, intermittent or perennial. Although SDAMs exist for some regions of the United States, no validated SDAM has been developed for Puerto Rico and the US Virgin Islands. This review lays the foundation for a US Caribbean SDAM that will be accurate and practical by characterizing trends in stream research and identifying flow class documentation, candidate indicators of streamflow duration and a hydrogeographic framework. We screened 2081 titles and abstracts and 750 full-text...

Brazil contains 15–20% of the world’s biodiversity, with forests originally covering 88% of its territory, now reduced to about 58%. The country has committed to restoring at least 12 million ha of forests by 2030. Seeding is a cost-effective method for tropical forest restoration, widely used in Brazil, but its effectiveness for species-rich forests is still uncertain due to low establishment rates for many species. Most seeding research has involved relatively few species, and many are short-lived, raising concerns about long-term ecosystem development. Invasive grasses and loss of...