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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of Mountain pine beetle damage. Daniel Miller, USDA Forest Service
ID: 693
A 25-Year History of Forest Disturbance and Cause in the United States

Understanding trends in forest disturbance caused by fire, harvest, stress, weather, and conversion is important for many forest management deci ...

Principal Investigator : Gretchen Moisen

Inventory and Monitoring2014RMRS
Photo of Cover of the special issue. The Caribbean Naturalist, Bienvenida and Gerald Bauer.
ID: 1148
A Caribbean Foresters Collaborative Network for Understanding Regional Forest Dynamics

The role of Caribbean forestry research in permanent plots has been identified as both a previously untapped regional source for capacity buildi ...

Principal Investigator : Tamara Heartsill Scalley

Inventory and Monitoring
Resource Management and Use
2016IITF
Photo of Dead and dying trees on theBass Lake RangerDistrict, Sequoia National Forest, California.
ID: 1413
A satellite view yields clues about drought and tree mortality

Researchers are using satellite data to understand the interplay between drought and site-specific conditions across the larger landscape. A new ...

Principal Investigator : David M. Bell

Inventory and Monitoring
Outdoor Recreation
2018PNW
Photo of Seized illegal logs in Riau, Indonesia. CIFOR
ID: 932
A Scientist Finds that the Lacey Act Amendment of 2008 Works to Limit Illegal Wood Imports

Forest Service scientist Jeffrey Prestemon evaluated U.S. import trade data from countries that are suspected sources of illegally obtained wood ...

Principal Investigator : Jeffrey P. P. Prestemon

Resource Management and Use2015SRS
Photo of Tropical forest clearing and rates of forest regrowth can be monitored with multispectral satellite imagery for forest carbon accounting for programs such as the United Nations REDD+ program.  U.S. Geological Survey, the Brazilian Institute for Space Research, and NASA.
ID: 781
A Synthesis of How Multispectral Satellite Imagery Can Support Inventories of Greenhouse Gas Emissions from Tropical Forest Clearing and Regrowth

Human clearing, logging, and burning of tropical forests accounts for at least 19 percent of annual human-caused emissions of carbon dioxide to ...

Principal Investigator : Eileen H. Helmer

Inventory and Monitoring2015IITF
Photo of A subset of the landscape in Montana’s Swan Valley (top panel). The lower panel shows the plot IDs for the best-matching plot for each pixel of the same landscape, with each color representing a unique plot. In the left half of the imagery, the landscape is dominated by a checkerboard pattern, the legacy of extensive timber harvest on private lands, and less extensive harvest on public lands. On the right side of the imagery, vegetation is dominated by topographic gradients in a mountainous landscape. The model was able to pick up these patterns, with the outline of the checkerboard visible in the left half of the lower panel, and the topographic gradients visible in the clustering of the plots on the right half of the panel. U.S. Department of Agriculture Forest Service.
ID: 1150
A Tree Level Model of Forests in the Western United States

Maps of the number, size, and species of trees in forests across the western U.S. are desirable for a number of applications including estimatin ...

Principal Investigator : Karin Riley

Inventory and Monitoring
Wildland Fire and Fuels
2016RMRS
Photo of Fire danger categories
ID: 1425
An update of the National Fire Danger Rating System

The National Fire Danger Rating System (NFDRS) is a system that allows fire managers to estimate today's or tomorrow's fire danger for a given a ...

Principal Investigator : William M. Jolly

Water, Air, and Soil
Inventory and Monitoring
Wildland Fire and Fuels
Resource Management and Use
2018RMRS
Photo of False color composite of the four representative Landsat MSS images – the older images that go back to the 1970s, in Puerto Rico, and their cloud and shadow masks by the new method, ATSA2 (gray: clear pixels; black: shadows; white: clouds, DOY = Day of Year)
ID: 1474
Automated monitoring of tropical deforestation made easier

New algorithm permits automated tropical forest monitoring back to the 1970s and allows more frequent observations since the year 2015

Principal Investigator : Eileen H. Helmer

Inventory and Monitoring
Outdoor Recreation
2018IITF
Photo of Data from a tabonuco forest (pictured) in the Luquillo Experimental Forest, one of three long-term time series of data, contributed to the BIOFRAG database. USDA Forest Service
ID: 761
BIOFRAG: A New Database for Analyzing Biodiversity Responses to Forest Fragmentation

A collaboration among more than 50 scientists from international institutions produced a database that contributes to understanding biodiveristy ...

Principal Investigator : Tamara Heartsill Scalley

Inventory and Monitoring
Resource Management and Use
2015IITF
Photo of Interior west states showing Forest Inventory and Analysis plots (black dots) and plots with tree-ring data (red dots). Justin DeRose, U.S. Department of Agriculture Forest Service.
ID: 1063
Building the Forest Inventory and Analysis Tree-ring Dataset

Tree-ring data collected as part of the Forest Inventory and Analysis program in the Interior West is being assembled into a massive dataset wit ...

Principal Investigator : R. Justin DeRose

Inventory and Monitoring
Water, Air, and Soil
2016RMRS
Photo of Mixed Species Forest. U.S. Department of Agriculture Forest Service.
ID: 1180
Carbon Accumulation by U.S. Forests May Slow Over the Next 25 Years

U.S. forests currently help offset carbon emissions and reduce the overall costs of achieving emission targets but that could change over the ne ...

Principal Investigator : John Coulston

Inventory and Monitoring2016SRS
Photo of Assessment of a stream reach that combines open channelization with built-up, impermeable (gray) riparian areas and canopy forming vegetation (green) riparian with permeable surfaces of the Rio Piedras watershed. Luis Weber-Grullón, Arizona State University.
ID: 1154
Challenges to Riparian Function in a Tropical, Urban Stream Network

Limited connectivity of riparian areas, pluvial drainages, and highly modified stream channels affect hydrological function of green spaces in u ...

Principal Investigator : Tamara Heartsill Scalley

Resource Management and Use
Water, Air, and Soil
2016IITF
Photo of Nighttime warming experiment at the Sevilleta National Wildlife Refuge, New Mexico. This long-term experiment is designed to determine the effects of warmer nighttime temperatures on carbon fluxes in native desert grassland. Scott Collins, University of New Mexico
ID: 832
Climate Change Impacts on Future Carbon Stores and Management of Warm Deserts of the United States

Forest Service scientists summarized studies that focus on key components of carbon exchange across the warm deserts of North America to determi ...

Principal Investigator : Paulette L. Ford

Inventory and Monitoring2015RMRS
Photo of Fall colors and reflection on a pond in Lamoille Canyon, Ruby Mountains District, Humboldt-Toiyabe National Forest, Nevada
ID: 1422
Climate change vulnerability in the northern and central Rocky Mountains: Issues relevant to resource management

In the face of climate change, vulnerability assessments are important tools to support climate change adaptation planning and Forest Plan Revis ...

Principal Investigator : Linda A. Joyce

Resource Management and Use
Water, Air, and Soil
Wildland Fire and Fuels
Wildlife and Fish
Inventory and Monitoring
2018RMRS
Photo of The Thompson Ridge Fire in the Jemez Mountains, taken from the Valles Caldera Bonca Bonita site (north-central New Mexico). Jeremy Marshall,  USDA Forest Service
ID: 694
Comprehensive Inventory of Forest Health Trends in New Mexico

The public, forest managers, and scientists now have the most comprehensive inventory of forest health trends in New Mexico's history. The repor ...

Principal Investigator : Sara A. Goeking

Inventory and Monitoring2014RMRS
Photo of Blackgum trees are one of the species whose ranges may shift. Vern Wilkins,  Indiana University
ID: 742
Cooperation Leads to Continued Research on Tree Range Shifts in the Eastern U.S.

In an attempt to understand the potential impact of climate change on tree species ranges in the eastern U.S., teams of researchers from the For ...

Principal Investigator : Christopher M. Oswalt

Resource Management and Use
Inventory and Monitoring
2014SRS
Photo of A fire burns through the understory.
ID: 1420
Decreasing number of rainy days in summer has increased western wildfire

New research shows that significant declines in summer precipitation, and lengthening summer dry spells, are major drivers of the increase in fi ...

Principal Investigator : William M. Jolly

Inventory and Monitoring
Wildland Fire and Fuels
2018RMRS
Photo of Dead Utah juniper cross-section that has been crossdated. Inside ring is 871 AD and outside ring is 1211 AD. Justin DeRose, U.S. Department of Agriculture Forest Service.
ID: 1030
Dendrochronology of Utah Juniper

Annual precision of tree-ring data is often sought for detailed analyses. Important, widespread species such as ponderosa pine and Douglas-fir a ...

Principal Investigator : R. Justin DeRose

Water, Air, and Soil2016RMRS
Photo of Cores from a 100-year old ponderosa pine tree. USDA Forest Service
ID: 775
Dendroecological Studies in the Interior West States

Scientists produce tree ring data in digital format and make progress on data development for growth studies to analyze regional patterns of cli ...

Principal Investigator : John D. Shaw

Inventory and Monitoring2015RMRS
Photo of The Rightful Place of Science: Designing Knowledge, book cover
ID: 1487
Designing Knowledge

Designing Knowledge Systems for Organizational Success

Principal Investigator : Tischa A. Munoz-Erickson

Water, Air, and Soil
Resource Management and Use
2018IITF
Photo of Dry Land cotton grows on a farm in Navasota, TX. Researchers found that land use within ‘road effect zones’ is an important predictor of forest plant invasions.
ID: 1480
Do roads drive forest plant invasions?

Roads provide a means for moving people and products, but they can also allow hitchhiking organisms to spread. Some exotic invasive plants thriv ...

Principal Investigator : Kurt Riitters

Invasive Species2018SRS
Photo of Tree rings record variations in climate, especially precipitation.  Using a large number of tree-ring records tied to Forest Inventory and Analysis plots will allow scientists to more precisely quantify the effects of post-drought growth lags over large land areas. USDA Forest Service
ID: 797
Drought Leaves a Lasting Impression on Trees

Some effects of drought, such as tree mortality, are obvious, but relatively little is known about non-lethal impacts. This study showed that th ...

Principal Investigator : John D. Shaw

Inventory and Monitoring2015RMRS
Photo of An example of eastern red cedar (Juniperus virginiana) expansion into grasslands in eastern Nebraska. USDA Forest Service
ID: 853
Eastern Redcedar Forests are Expanding in the Central United States

Monitoring of change in our nation’s forest resources is an important aspect of the Forest Inventory and Analysis (FIA) work in the Forest Ser ...

Principal Investigator : Dacia Meneguzzo

Inventory and Monitoring2015NRS
Photo of Photo of copies of the atlas
ID: 1491
El Yunque National Forest Atlas release

Publication of an atlas about El Yunque National Forest, a collaboration between the International Institute of Tropical Forestry and El Yunque ...

Principal Investigator : International Institute of Tropical Forestry

Resource Management and Use
Outdoor Recreation
Inventory and Monitoring
Wildlife and Fish
Water, Air, and Soil
2018IITF
Photo of Field crew measure trees at H.J. Andrews Experimental Forest. USDA Forest Service
ID: 791
Equations Used to Estimate Regional Tree Biomass and Carbon can be Improved

Developing nationally consistent methods for defining, measuring, and calculating biomass components will improve the reliability and applicatio ...

Principal Investigator : Andrew Gray

Inventory and Monitoring2015PNW
Photo of Map of invasives across the Northern U.S.  Cassandra Kurtz, USDA Forest Service
ID: 612
Examining the Spread of Invasive Species Using Data from the Forest Inventory and Analysis Program

Invasive plant species threaten the integrity of our ecosystems and cost billions of dollars in damages and removal costs annually. Forest Servi ...

Principal Investigator : Cassandra Kurtz

Invasive Species
Inventory and Monitoring
2014NRS
Photo of Family forestland owners.  Thinkstock.com
ID: 843
Family Forest Owners See the Trees, Not the Forest

Family forest owners, people who own more forest land in the U.S. than any other group, do not perceive themselves as owning “forests.” Work ...

Principal Investigator : Brett J. Butler

Resource Management and Use
Inventory and Monitoring
2015NRS
Photo of Exurban development changes the landscape context of family forest.
ID: 1464
Family forests are the ties that bind the landscape

Family forests have an enormous capacity to provide ecosystem services such as clean air and water, timber and nontimber forest products, wildli ...

Principal Investigator : Kurt Riitters

Outdoor Recreation
Inventory and Monitoring
2018SRS
Photo of
ID: 333
FIA 5-year report summarizes forest conditions in Washington

This report highlights forest conditions and trends from 2002 to 2006 for all forest lands in Washington State. This information establishes a b ...

Principal Investigator : Karen Waddell

Inventory and Monitoring2011PNW
Photo of Map showing the drylands of North America. U.S. Department of Agriculture Forest Service.
ID: 984
First Global Assessment of Drylands

Drylands, characterized by scarcity of water, globally support about two billion people. While most of these people live in developing nations, ...

Principal Investigator : Paul L. Patterson

Inventory and Monitoring
Water, Air, and Soil
2016RMRS
Photo of A field technician installs a potential study plot on the island of O'ahu. Natalie Tangalin, Forest Service
ID: 334
Forest Inventory and Analysis begins work on Hawaiian Islands

Policymakers and natural resource managers need up-to-date, consistent, and credible information on the status and trends of forests in Hawaii a ...

Principal Investigator : Robert Pattison

Inventory and Monitoring2011PNW
Photo of The GuidosToolbox offers a free, user-friendly alternative to commercial software tools for users across the globe to monitor forest fragmentation and landscape patterns at any scale.
ID: 1313
Forest Service software goes global

Originally intended to foster and support U.S.-European harmonization of forest assessments required for the Montreal Process and the Food and A ...

Principal Investigator : Kurt Riitters

Outdoor Recreation2017SRS
Photo of Panel discussion on the social, ecological, and technological dimensions of the disaster during the workshop From Disaster to Transformation held February 23, 2018, at the University of Puerto Rico, Río Piedras
ID: 1488
From Disaster to Transformation: Lessons from Puerto Rico in the aftermath of Hurricane María

We are capturing lessons from the hurricane under the theme: "From disaster to transformation" involving wide cross sections of the social spect ...

Principal Investigator : Tischa A. Munoz-Erickson

Resource Management and Use
Water, Air, and Soil
2018IITF
Photo of Regional groupings of tropical montane cloud forest and associated lower and upper altitudinal limits of the cloud belt (modified after Scatena 2010). U.S. Department of Agriculture Forest Service.
ID: 1158
Geographic, Environmental, and Biotic Sources of Variation in the Nutrient Relations of Tropical Montane Forests

Incorporating other geographic, environmental and biotic variables in tropical montane forests biogeochemistry, might give scientists a more acc ...

Principal Investigator : Grizelle Gonzalez

Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2016IITF
Photo of Regions of the termite digestive tract showing the large hindgut, which is, essentially, an anaerobic bioreactor packed full of microbes that digest cellulose.
ID: 1494
Giving Termites “Stomach Aches”

Chitosan can be used to upset the microbial imbalance in the termite hindgut, leading to the establishment of three different bacterial pathogen ...

Principal Investigator : Juliet D. Tang

Resource Management and Use
Water, Air, and Soil
2018FPL
Photo of Map of Luquillo Mountains, including El Yunque National Forest/Luquillo Experimental Forest and its locations in NE Puerto Rico where bird population monitoring occurred. The black circles represent sites sampled in 2015 with automated acoustic recorders and yellow circles sites with historical point count data. Different colors represent differences in elevation (m a.s.l.).
ID: 1452
Have bird distributions shifted along an elevation gradient with climate change over a 17-year period in El Yunque National Forest?

Expected elevational shifts in bird distributions with global warming may be species-specific and, hence not readily predictable for many bird s ...

Principal Investigator : Wayne J. Arendt, PhD

Outdoor Recreation
Wildlife and Fish
Inventory and Monitoring
2018IITF
Photo of The southern part of the San Juan Bay Estuary, a hilly area with soils  derived from volcanic soils, is less densely developed and has higher  tree cover than other parts of the watershed. Tom Brandeis, USDA Forest Service
ID: 738
Highly Dynamic Urban Forest in San Juan, Puerto Rico.

Between 2001 and 2010, the urban forest in the San Juan Watershed in Puerto Rico was highly dynamic. Nearly 50 percent in trees originally sampl ...

Principal Investigator : Wayne C. Zipperer

Inventory and Monitoring
Resource Management and Use
2014SRS
Photo of Lingering ecological effects can be found along the edges of past harvests for decades.
ID: 1365
How do old clearcuts affect old-growth?

The edge influence of past clearcutting on the structure of neighboring uncut old-growth forests is widespread and persistent. These indirect an ...

Principal Investigator : David M. Bell

Resource Management and Use
Water, Air, and Soil
2017PNW
Photo of Municipal planners and university students during an i-Tree training session in the Colonial City of Santo Domingo. Jorge Paniagua, U.S. Department of Agriculture Forest Service.
ID: 1173
i-Tree Serves as a Green Infrastructure Assessment Tool to Municipal Planners and Researchers in the Dominican Republic

The iTree tool was implemented for the first time in the Colonial City of Santo Domingo, Dominican Republic, to assess the value of ecosystem-ba ...

Principal Investigator : Tischa A. Munoz-Erickson

Resource Management and Use
Inventory and Monitoring
2016IITF
Photo of Mushroom on piece of downed dead wood. Fungal communities are a critical driver of dead wood residence times.  Christopher Woodall, USDA Forest Service
ID: 599
If a Tree Falls in a Forest, How Long Does It Lie There

Dead wood is critical to nutrient cycling, carbon dynamics, tree regeneration, wildlife habitat, and wildfire behavior in forests. Forest Servi ...

Principal Investigator : Christopher W. Woodall

Inventory and Monitoring2014NRS
Photo of Typical timber bridge example.
ID: 1508
Laboratory Evaluation of Salvaged Bridge Girders from U.S. Route 66

Timber bridges have been in-service for nearly nine decades along Southern California's Historic Route 66 National Trails Highway.  Several unt ...

Principal Investigator : James P. Wacker

Water, Air, and Soil
Resource Management and Use
2018FPL
Photo of Dead whitebark pine trees in the Frank Church-River of No Return Wilderness Area, Salmon-Challis National Forest, Idaho
ID: 1515
Landscape-scale assessments of whitebark pine

Whitebark pine (Pinus albicaulis) is an ecologically important species in high-altitude areas of the Western United States. Whitebark pine stand ...

Principal Investigator : Sara A. Goeking

Outdoor Recreation
Inventory and Monitoring
2018RMRS
Photo of Example of high-resolution LiDar data of canopy heights. U.S. Department of Agriculture Forest Service.
ID: 1031
Laser Technology and Modeling Tools for Precision Forest Inventory, Monitoring, and Planning

Forest Service scientists and their partners are developing relationships between LiDAR estimates and traditional forestry measures collected on ...

Principal Investigator : Andrew T. Hudak

Inventory and Monitoring
Resource Management and Use
2016RMRS
Photo of Bone lichen (Hypogymnia spp.) is a common sight in Alaska's forests. Sarah Jovan, USDA Forest Service
ID: 662
Lichen Are Indicators of Climate Change in Southern Alaska's Forests

Lichens respond quickly to climate changes and potentially allow early detection of shifting conditions before other changes in vegetation are a ...

Principal Investigator : Sarah Jovan, Dr

Inventory and Monitoring2014PNW
Photo of Wolf lichen (Letharia spp.) is a species frequently used to estimate nitrogen deposition in western forests. Jason Hollinger, Wikimedia Commons
ID: 663
Lichen Indicate Air Quality Near Natural Gas Wells

Nitrogen in lichen tissues closely correlates with measured nitrogen deposition in forests near natural gas wells in the Bridger Wilderness, WY. ...

Principal Investigator : Sarah Jovan, Dr

Water, Air, and Soil
Inventory and Monitoring
2014PNW
Photo of High-resolution stream temperature scenario developed from data at over 20,000 sites and used to precisely map locations of climate refugia for cold-water species. U.S. Department of Agriculture Forest Service.
ID: 1025
Mapping Climate Refugia to Preserve Cold-water Biodiversity Using Crowd-sourced Databases

Climate change is rapidly altering stream and river environments across the western U.S. and may threaten the long-term persistence of populatio ...

Principal Investigator : Daniel J. Isaak

Water, Air, and Soil
Wildlife and Fish
Inventory and Monitoring
2016RMRS
Photo of Forest Service scientist Sean Healey (left) in front of Beijing Forestry University with Dr. Klaus von Gadow of that institution. USDA Forest Service
ID: 769
National Estimates of China’s Forests Become More Consistent and Precise, Thanks to Forest Service Scientists

Scientist helps the Chinese National Forest Inventory document methods and conclusions of China's efforts to understand its own forests.

Principal Investigator : Sean P. Healey

Inventory and Monitoring2015RMRS
Photo of These maps depict the distribution of 12 tree species across the state of New York. The maps show where these trees do not occur (gray), occasionally occur (pale green), are a minor component (medium green), are a major component (dark green), or are the dominant species (black) in the forest, as determined by that species' total basal area. Rachel Riemann, USDA Forest Service
ID: 630
Nationwide Datasets of Tree Species Distributions Created

Geospatial datasets of the relative abundance and distribution of individual tree species have been created by Forest Service scientists for 323 ...

Principal Investigator : Barry T. (Ty) Wilson

Inventory and Monitoring2014NRS
Photo of Douglas-fir killed by sprucebud worm on the Malheur National Forest in eastern Oregon. Dave Powell, USDA Forest Serivce
ID: 664
Net Forest Carbon in Oregon Increased Slightly During the Last Decade

Gains in forest carbon through tree growth and afforestation in the Pacific Northwest were offset by fire, insects, cutting, and deforestation.

Principal Investigator : Andrew Gray

Inventory and Monitoring2014PNW
Photo of Book cover. USDA Forest Service
ID: 653
New Book Documents Contributions from Forest Service's Long-Term Research Sites

From the role of fire in forests to responses to clearcutting controversies, from the discovery of acid rain to the development of biogeochemica ...

Principal Investigator : Susan Stout

Invasive Species
Inventory and Monitoring
Outdoor Recreation
Wildland Fire and Fuels
Water, Air, and Soil
Resource Management and Use
Wildlife and Fish
2014NRS
Photo of The tundra of interior Alaska hosts an incredible diversity of moss and lichen species that sequester carbon and regulate the water table, among other ecosystem services. USDA Forest Service.
ID: 762
New Method Monitors Species Groups and Estimates Carbon Storage in Moss and Lichen Layers in Boreal and Temperate Forests

Mat forming ground layers of mosses and lichens are responsible for sequestering one-third of the world’s terrestrial carbon, regulating water ...

Principal Investigator : Sarah Jovan, Dr

Inventory and Monitoring2015PNW
Photo of Aspen stands affected by drought in southern Colorado.
ID: 1384
New report offers comprehensive inventory of Colorado’s forests

The current inventory of Colorado’s forests is the first to use the complete set of Forest Inventory and Analysis (FIA) plots across all owner ...

Principal Investigator : John D. Shaw

Outdoor Recreation
Inventory and Monitoring
Invasive Species
Wildland Fire and Fuels
2017RMRS
Photo of Soil sample. Thomas J. Brandein, Forest Service
ID: 593
Nitrogen and Phosphorus Content in Forest Floor Litter is Elevated in a Tropical Landscape Recovering from Deforestation

Fallen leaf chemistry provides a window into the various and often complex factors affecting the availability of nutrients to trees. Both nitrog ...

Principal Investigator : Eileen H. Helmer

Inventory and Monitoring2014IITF
Photo of A mature shortleaf pine-bluestem grass woodland maintained using thinning and cyclic prescribed fire. The banded tree contains an active nest for the endangered red-cockaded woodpecker. Ouachita National Forest, Scott County, Arkansas.
ID: 1436
Options for forest management in southern forests under changing climate conditions

In the southern United States, how will foresters respond to the threat posed by changing climate conditions? Easy—by managing one stand at a ...

Principal Investigator : James M. Guldin

Resource Management and Use
Water, Air, and Soil
2018SRS
Photo of Figure 1. (A) The study sites were located in the Luquillo Experimental Forest in northeastern Puerto Rico; (B) Logs of two species and two stages of decomposition were selected (20 logs total) and paired soil and core samples were collected and; (C) PRS-probes (Plant Root Simulator) (ion exchange membranes) were collected from underneath and 50 cm away from the logs. U.S. Department of Agriculture Forest Service.
ID: 1152
Physical, Chemical, and Biological Properties of Soil Under Decaying Wood in a Tropical Wet Forest in Puerto Rico

Decaying wood is related to nutrient cycling through its role as either a sink or source of nutrients; however, at micro scales, what is the eff ...

Principal Investigator : Grizelle Gonzalez

Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2016IITF
Photo of Flock of pinyon jays in juniper tree. U.S. Department of Agriculture Forest Service.
ID: 994
Pinyon Jays: Orchardists of the Great Basin’s Woodlands

Expansion of pinyon-juniper woodlands into neighboring shrublands and grasslands can have detrimental impacts to species that prefer treeless ar ...

Principal Investigator : Christopher Witt

Inventory and Monitoring
Resource Management and Use
Wildlife and Fish
2016RMRS
Photo of Photo of permanent study plot in 2007 immediately prior to timber harvest. Jack Butler, USDA Forest Service
ID: 701
Ponderosa Pine Understory Vegetation Recovers Quickly Following Timber Harvest

Creating and maintaining a healthy forest relies on the resiliency of understory vegetation. The understory vegetation is largely responsible fo ...

Principal Investigator : Jack L. Butler

Resource Management and Use
Inventory and Monitoring
Invasive Species
2014RMRS
Photo of A simulated forest canopy opening in the Luquillo Experimental Forest to mimic hurricane disturbance and investigate changes in microclimate, biota, and ecosystem processes. Aaron B. Shiels, National Wildlife Research Center; USDA Animal and Plant Health Inspection Service
ID: 800
Post-hurricane Canopy Openings Influence Ecosystem Processes in a Tropical Rainforest

Forest Service researchers collaborated with external scientists to examine the effects of hurricane disturbance on tropical forest ecosystems. ...

Principal Investigator : Grizelle Gonzalez

Resource Management and Use
Inventory and Monitoring
Invasive Species
Water, Air, and Soil
Wildland Fire and Fuels
2015IITF
Photo of
ID: 421
Posting of 2010 Southern Forest Inventory and Analysis (FIA) annual data

Decision-makers such as Congress, government agencies, and industry managers require current data on the state of the Nation's forests for effec ...

Principal Investigator : Ali Conner

Inventory and Monitoring
Resource Management and Use
2011SRS
Photo of The elevation gradient in northeastern Puerto Rico, from coastal lowlands to the tropical mountain peaks of Luquillo Experimental Forest. USDA Forest Service
ID: 766
Precipitation and Temperature Trends Along an Elevation Gradient in Northeastern Puerto Rico Examined

Forest Service researchers studied climatic trends along an elevation gradient in northeastern Puerto Rico. Study results showed that differing ...

Principal Investigator : Ashley Van Beusekom

Water, Air, and Soil
Inventory and Monitoring
2015IITF
Photo of View of active fire burning surface fuels in a prescribed burn block at Eglin Air Force Base in Florida on Feb. 6, 2011. The overstory is dominated by fire-dependent longleaf pine. Andrew T. Hudak, U.S. Department of Agriculture Forest Service.
ID: 1033
Prescribed Fires: Mapping Fuels and Energy Release Across the Landscape

Pine needles, deciduous leaves, and downed woody debris accumulate in the absence of fire along with grass and other dead plant material. This b ...

Principal Investigator : Andrew T. Hudak

Inventory and Monitoring
Resource Management and Use
Wildland Fire and Fuels
2016RMRS
Photo of Forest management on private land tends to decrease as proximity to residential development increases. USDA Forest Service.
ID: 785
Proximity and Amount of Development Affects Forest Structure, Invasive Plant Abundance, and Probability of Management of Remaining Forested Lands

Rural residential development in forests of Oregon and Washington continues to be a key driver of land use change. With greater housing density ...

Principal Investigator : Pacific Northwest Research Station

Resource Management and Use2015PNW
Photo of Yellow-cedar (Callitropsis nootkatensis) in Cedar Bay, Alaska.
ID: 1368
Recent increases found in yellow-cedar in Alaska

In most unmanaged forests in Alaska, yellow-cedar has recently increased, as measured by live tree basal area, and the average mortality rate ha ...

Principal Investigator : Tara M. Barrett

Inventory and Monitoring
Outdoor Recreation
2017PNW
Photo of Forest succession at research site plot in the Chiclana stream, part of the Rio Piedras watershed. Top photo 2006, below 2010. A pluvial structure is marked at the right of each photo for reference. Harold Manrique-Hernandez, San Juan Bay Estuary Program.
ID: 1153
Riparian Vegetation Restoration in Light of Succession; Management Implications for Restoration in Tropical Secondary Forests

There is a wide variety of approaches on how to determine when a river restoration project can be considered ecologically successful. The limite ...

Principal Investigator : Tamara Heartsill Scalley

Invasive Species
Inventory and Monitoring
Water, Air, and Soil
2016IITF
Photo of https://usfs.box.com/s/qlil4h9aup9vlcp1cjpbczf55ymdr8pzSRS4552_Ulyshen_2018_Saproxylic Insects Diversity Ecology and Conservation_1.JPG  
Lucanus elaphus (female), a wood-feeding beetle native to the southeastern United States
ID: 1496
Saproxylic insects: diversity, ecology, and conservation

A new book synthesizes global knowledge about one of the most diverse groups of insects in forests, those associated with dying and dead wood.

Principal Investigator : Michael Ulyshen

Wildlife and Fish2018SRS
Photo of U.S. forests, such as this bottomland hardwood stand, are susceptible to climate change. Paul Bolstad, University of Minnnesota
ID: 740
Science in supports of the National Climate Assessment

A synthesis of research findings provided the foundation for the analysis of climate change on forest conditions, land use, and forest carbon in ...

Principal Investigator : James Vose

Resource Management and Use
Water, Air, and Soil
Inventory and Monitoring
2014SRS
Photo of Field crew collect forest inventory data in a stand of black spruce in Interior Alaska.
ID: 1398
Scientists analyze trends in tree growth to assess change in Interior Alaska’s spruce forest

Tree-ring analysis adjusted for age-related changes in growth indicate that recent growth of black and white spruce in Interior Alaska is near t ...

Principal Investigator : Andrew Gray

Outdoor Recreation
Inventory and Monitoring
2017PNW
Photo of The distribution of net ecosystem production (mean for 2006–2010). Areas in red denote highest productivity and therefore sequestered the greatest amounts of atmospheric carbon. From Turner et al. 2016
ID: 1403
Scientists model four-state region to estimate carbon pools and flux over large domains

Variation in climate, disturbance regime, and forest management strongly influence terrestrial carbon sources and sinks.

Principal Investigator : Andrew Gray

Outdoor Recreation
Inventory and Monitoring
2017PNW
Photo of San Juan watershed. Thomas Brandeis, USDA Forest Service
ID: 741
Scientists Quantify the Value of Ecosystem Services Provided by the San Juan Bay Estuary

A decade long study of the urban forests and land uses within the watershed of Puerto Rico's San Juan Bay Estuary quantified the value of ecosys ...

Principal Investigator : Tom Brandeis

Inventory and Monitoring2014SRS
Photo of Research ecologist Justin DeRose extracts a tree core from an increment borer. Tree rings in a tree core not only tell the age of the tree, they also provide vital information about a tree’s growth from year to year, including periods of drought and other natural disturbances.
ID: 1387
Scientists recontruct the history of snowpack in Utah to help managers plan for future water demand

Understanding snowpack variability is an important goal of water management; in particular, in the arid west where snow represents a major water ...

Principal Investigator : R. Justin DeRose

Outdoor Recreation
Wildlife and Fish
Water, Air, and Soil
Inventory and Monitoring
2017RMRS
Photo of Across forestlands on the West Coast, tree seedlings are migrating to areas cooler than the current range of mature trees. USDA Forest Service
ID: 793
Seedlings of Most Tree Species in California, Oregon, and Washington are Shifting Toward Areas Colder Than Those Occupied by Mature Trees

Global warming is predicted to cause systematic changes in the distribution of tree species. Determining if and where the changes are occurring ...

Principal Investigator : Vicente Monleon

Inventory and Monitoring2015PNW
Photo of Forest impacted by the mountain pine beetle. U.S. Department of Agriculture Forest Service.
ID: 1043
Shape Selection in Landsat Time Series

Understanding trends in forest disturbance and their effects on forest parameters such as tree canopy cover and biomass is important for carbon ...

Principal Investigator : Gretchen Moisen

Inventory and Monitoring
Resource Management and Use
Wildland Fire and Fuels
Water, Air, and Soil
2016RMRS
Photo of Snags and logs provide important resources and biological legacies in mixed-conifer forests. U.S. Department of Agriculture Forest Service.
ID: 1144
Southwestern Forests: The Importance of Snags and Logs

Snags (standing dead trees) and logs are a critical component of ecosystems. They contribute to decay dynamics and other ecological processes in ...

Principal Investigator : Joseph L. Ganey

Inventory and Monitoring
Resource Management and Use
Wildland Fire and Fuels
Wildlife and Fish
2016FPL
Photo of (a) Location and species of tree-ring data collected on Forest Inventory and Analysis plots (n=2,949), (b) relationship between growth variability and latitude, (c) longitude, and (d) elevation. U.S. Department of Agriculture Forest Service.
ID: 1051
Spatial Variability of Tree Growth in the Interior West

A fundamental goal of biogeography is to understand the factors that drive spatial and temporal variability in forest growth across large areas. ...

Principal Investigator : R. Justin DeRose

Inventory and Monitoring2016RMRS
Photo of Privately-owned forest land can provide many economic benefits. State programs can reduce property taxes for forest land, but landowners must comply with the requirements in state law.
ID: 1476
State programs to reduce forestland property taxes vary in requirements and implementation.

All states in the U.S. have programs that lower property taxes for qualified forest land, which is justified by the economic benefits and non-ma ...

Principal Investigator : Gregory E. Frey

Water, Air, and Soil
Resource Management and Use
2018SRS
Photo of Monterey cypress is among the numerous rare and evolutionarily distinct tree species that grow in California.
ID: 1465
Study compares rarity and evolutionary distinctiveness of trees in protected and unprotected areas

How should tree species and forests be prioritized for conservation? In a paper published in the journal Biological Conservation, a researcher r ...

Principal Investigator : Southern Research Station

Outdoor Recreation
Inventory and Monitoring
2018SRS
Photo of Schoolyard trees around an elementary school in Portland, Oregon.
ID: 1417
Support a child’s education by planting neighborhood trees?

Greenness around a child’s home and school is associated with higher scores on standardized math and reading tests, whereas proximity to major ...

Principal Investigator : Geoffrey Donovan

Resource Management and Use
Water, Air, and Soil
2018PNW
Photo of RMRS Research Ecologist Michael Schwartz collects eDNA samples from Rattlesnake Creek in Missoula, Montana. Photo credit Kellie Carim
ID: 1520
The eDNAtlas project: A national map of aquatic biodiversity

eDNA sampling provides a low-cost & sensitive method for determining which species occur in water bodies. Rapid adoption of eDNA sampling by man ...

Principal Investigator : David E. Nagel

Resource Management and Use
Water, Air, and Soil
Invasive Species
Inventory and Monitoring
Wildlife and Fish
Outdoor Recreation
2018RMRS
Photo of
ID: 418
The National Harvest and Utilization Program

The U.S. forest industry is a multibillion dollar business, providing jobs and economic value to local communities across the Nation. With incre ...

Principal Investigator :

Inventory and Monitoring
Resource Management and Use
2011SRS
Photo of Shannon’s Diversity Index of a forest’s wood specific gravity (i.e., wood density), which serves as an indicator of various forest ecosystem processes such as selfthinning. USDA Forest Service
ID: 871
The Next Generation of Forest Analysis: Integrating Tree Functional Traits With the “Big Data” of Forest Inventories

Over recent years, plant traits such as shade tolerance or wood density have emerged as valuable variables in interpreting plant population dyna ...

Principal Investigator : Christopher W. Woodall

Inventory and Monitoring2015NRS
Photo of Region 4 Science Partner Program groundwater dependent ecosystems team members collect data.
ID: 1429
The Region 4 — RMRS Science Partner Program: Working to improve management strategies and communication through shared stewardship

In 2016, the Rocky Mountain Research Station launched the Region 4—Rocky Mountain Research Station Science Partner Pilot program. The program' ...

Principal Investigator : Terrie B. Jain

Outdoor Recreation
Resource Management and Use
Inventory and Monitoring
Water, Air, and Soil
Wildlife and Fish
2018RMRS
Photo of digitizing core w-slider ring.JPG: An increment core is cradled in a shallow groove of a wood block on a sliding stage, which allows the core to move along under the view of a microscope. The microscope is wired into a computer that crossdates and digitizes the core as it moves from one section to the next.
Digitizing rings w-microscope and sliding stage.png: Research Ecologist Justin DeRose views an increment core through a microscope as he measures ring widths to crossdate and digitize tree-ring features.
ID: 1392
Traumatic resin ducts indicate past beetle outbreaks

The formation of traumatic resin ducts in Engelmann spruce represents an important induced defense in response to environmental perturbations. T ...

Principal Investigator : R. Justin DeRose

Resource Management and Use
Outdoor Recreation
Invasive Species
Water, Air, and Soil
Inventory and Monitoring
2017RMRS
Photo of In the southeastern U.S.?, strong timber markets and forest values reduce the conversion of forest land to urban or agricultural land uses.
ID: 1467
Understanding how forest area will change in response to competing land uses

Strong economic growth in the southeastern U.S. has led to a shift in rural lands to urban uses, while changes in agricultural markets have driv ...

Principal Investigator : David N. Wear

Resource Management and Use
Water, Air, and Soil
2018SRS
Photo of A Texas A&M Forest Service FIA crew making their way to an UFIA plot in the Houston, TX area.
ID: 1322
Urban forest inventories heating up in Texas and beyond

The Forest Service is rolling out a national program of inventorying urban forests across the U.S. As an early adopter of the program, Texas is ...

Principal Investigator : Kerry Dooley

Inventory and Monitoring
Outdoor Recreation
2017SRS
Photo of People harvest thousands of pounds of black cohosh root for its medicinal value every year. The wild-harvesting of this and other nontimber forest products contributes millions of dollars to rural economies. Evidence indicates that the ecological impacts of harvesting may be significant, albeitnot well documented.
ID: 1484
Volumes and values of nontimber forest products in the United States

Wild-harvested plants and fungi from U.S. forests are critical to the food and financial security of millions of Americans. These nontimber prod ...

Principal Investigator : James L. Chamberlain

Inventory and Monitoring
Outdoor Recreation
Resource Management and Use
Water, Air, and Soil
2018SRS
Photo of Douglas-fir in H.J. Andrews Experimental Forest, Oregon.
ID: 1363
Wetter, warmer conditions will likely favor biomass accumulation in Douglas-fir

Conversely, continued accumulation of forest biomass in drier regions may be more limited.

Principal Investigator : David M. Bell

Water, Air, and Soil
Resource Management and Use
2017PNW
Photo of Prescribed fire in upland hardwood forests.
ID: 1483
Wildlife response to prescribed fires and mechanical fuel reduction treatments in an upland hardwood forest

Prescribed burning is a common forest management tool, with fuel reduction, ecosystem restoration, and wildlife habitat improvement often cited ...

Principal Investigator : Katie H. Greenberg

Resource Management and Use
Inventory and Monitoring
Wildlife and Fish
Wildland Fire and Fuels
Water, Air, and Soil
2018SRS