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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of Dead and dying Ailanthus trees inoculated with biocontrol fungus.
ID: 1224
A native fungus takes on an exotic and aggressive tree species

Working with the Wayne National Forest and the Ohio Department of Natural Resources, Forest Service scientists are studying a native fungus and ...

Principal Investigator : Joanne Rebbeck

Invasive Species2017NRS
Photo of Ailanthus tree inoculated with wilt fungus. Note drooping and wilting foliage. Joanne Rebbeck, USDA Forest Service.
ID: 620
Biocontrol Agent for the Invasive Ailanthus Tree To Be Tested

Forest Service scientists are studying a North American fungus that selectively kills ailanthus trees. Test sites were selected in Ohio forests ...

Principal Investigator : Joanne Rebbeck

Invasive Species2014NRS
Photo of Variation in black cherry crown health: Left-- a healthy tree; Right--an unhealthy declining tree. Robert Long, U.S. Department of Agriculture Forest Service.
ID: 1159
Black Cherry Crown Health and Mortality on the Allegheny National Forest

Black cherry, an important timber and wildlife species in the Allegheny hardwood forest, is suffering from poor crown health and increased morta ...

Principal Investigator : Robert P. Long

Resource Management and Use2016NRS
Photo of Upper panel: Black cherry raceme with individual flowers. Robert Long, USDA Forest Service
Lower panel: Mature black cherry seed at the base of a tree in fall 2010
ID: 1244
Black cherry regeneration difficulties: Are They Related to Stand Age or Something Else?

Forest managers report that black cherry regeneration is impeded by poor and erratic seed production. Tree stand age has been suggested as one o ...

Principal Investigator : Robert P. Long

Resource Management and Use
Water, Air, and Soil
2017NRS
Photo of Greenhouse seed bank germination trials with closeup of one tray. Todd E. Ristau, Forest Service
ID: 34
Can We Bank on Forest Seed Banks

Community composition of seeds stored in forest soils becomes increasingly divergent over time

Principal Investigator : Alejandro A. Royo

Resource Management and Use2012NRS
Photo of This black cherry seedling is infected with black cherry leaf spot. Managers and scientists have observed this infection more frequently in recent years. Robert Long, U.S. Department of Agriculture Forest Service.
ID: 1086
Changes in Black Cherry on the Allegheny Plateau

Increased tree mortality, decreased seed production, and seedling growth. Managers and scientists have been observing these changes in black che ...

Principal Investigator : Patrick Brose

Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2016NRS
Photo of While deep-forest birds avoided gas-oil wells on the Allegheny National Forest, generalist species (such as the American robin whose nest is visible on this pump jack) increased with increasing well density. Scott Stoleson, USDA Forest Service
ID: 648
Conventional Oil and Gas Development Alters Songbird Communities

A Forest Service scientist and partners found that as the density of oil and gas wells increased, the amount of core forest habitat decreased sh ...

Principal Investigator : Scott H. Stoleson

Wildlife and Fish2014NRS
Photo of Ohio educators learn to use emerald ash borer as a current issue to teach the process of science to middle school students. Barbara McGuinness, USDA Forest Service
ID: 486
Destructive Emerald Ash Borer Pest Provides Science Learning Opportunity for Kids

This effort has led to the development of a week-long EAB curriculum that gives kids hands-on experience with the process of science while doing ...

Principal Investigator : Kathleen Knight

Invasive Species2013NRS
Photo of American elm cuttings growing in the greenhouse. Kathleen Knight, U.S. Department of Agriculture Forest Service.
ID: 995
Elm Disease Resistance Research Gets a Boost

Great news for disease-tolerant American elm! A grant from The Manton Foundation has provided the Forest Service’s Northern Research Station w ...

Principal Investigator : Kathleen Knight

Resource Management and Use2016NRS
Photo of Report cover. USDA Forest Service
ID: 616
Estimating Greenhouse Gas Fluxes in Managed Forests

Forests have an important role in reducing greenhouse gases in the atmosphere. Forest Service scientists wrote the forestry chapter in a recent ...

Principal Investigator : Coeli Hoover

Inventory and Monitoring
Water, Air, and Soil
2014NRS
Photo of Results of herbicide application using different surfactants with glyphosate to control striped maple and American beech. Bars with the same letter are not different at p < 0.05. U.S. Department of Agriculture Forest Service.
ID: 1059
Fine-tuning Herbicide Prescriptions in Northern Hardwood Forests

Fine-tuning existing herbicide prescriptions leads to better results for forest managers and landowners.

Principal Investigator : Todd Ristau

Resource Management and Use2016NRS
Photo of A comparison of dying Ailanthus seedlings in the first row, which were inoculated with fungus, compared with control Ailanthus seedlings in the back row. J. Rebbeck, USDA Forest Service
ID: 481
Fungus Looks Like Promising Weapon Against Invasive Tree

Forest Service scientists are studying a North American fungus that selectively kills ailanthus trees. Preliminary tests of other Ohio native tr ...

Principal Investigator : Joanne Rebbeck

Invasive Species2013NRS
Photo of Photo 1.  A typical mountain laurel thicket in a mixed-oak forest in central Pennsylvania.  Such thickets prevent oak seedlings from becoming established and developing into competitive reproduction.  Note the 8-foot range pole in the center of the photo to appreciate the density and height of the shrubs. 
Photo 2.  A fall prescribed fire being conducted by Pennsylvania Bureau of Forestry personnel in a mountain laurel thicket that had been cut approximately 2 years earlier.  Initially, this combination of treatments showed the most promise of controlling mountain laurel, but after 5 years the shrubs had sprouted and the thicket was quickly reforming.
ID: 1258
How not to kill mountain laurel

Sometimes failure can be as important as success when it comes to developing appropriate silvicultural treatments for controlling interfering un ...

Principal Investigator : Patrick Brose

Water, Air, and Soil
Resource Management and Use
2017NRS
Photo of Various fern species growing on the Bisley Experimental Watersheds are important to forest succession in the Luquillo Experimental Forest. Omar Perez Reyes, College of Natural Resouces, Utah State University
ID: 351
Hurricanes Disturb Non-tree Subtropical Wet Forest Species Composition

Hurricane disturbance caused pronounced and persistent changes in the non-tree species composition of a subtropical wet forest. A unique long-te ...

Principal Investigator : Alejandro A. Royo

Water, Air, and Soil2011NRS
Photo of The relationship between initial ash canopy condition and the time series progression of each canopy condition class of insecticide treated trees over the course of the experimen.t Kathleen Knight, USDA Forest Service
ID: 882
Insecticide Effectiveness Against Emerald Ash Borer Studied

Insecticides used to protect urban ash trees against emerald ash borer are not consistently protective: their effectiveness is diminished in hea ...

Principal Investigator : Kathleen Knight

Invasive Species2015NRS
Photo of A cross-section of a fire-scarred yellow pine, collected at Shawnee State Forest, Ohio.  This tree established in 1865 and had seven fire scars, indicated by arrows, dating from 1888 to 1941.
ID: 1229
Insights from a 250-year history of fire in the Appalachian Plateau of Ohio and Kentucky

In many eastern U.S. forests, undesirable shifts in tree species abundance are occurring. For oaks and pines, it is widely believed that the dec ...

Principal Investigator : Todd Hutchinson

Wildland Fire and Fuels
Inventory and Monitoring
2017NRS
Photo of Salvage operation following windthrow in the Allegheny high plateau region. USDA Forest Service
ID: 803
International Symposium Improves Understanding of Disturbance and Salvage Logging and Forest Sustainability

The Forest Service’s Northern Research Station along with the University of Pittsburgh and the Carnegie Museum of Natural History sponsored an ...

Principal Investigator : Alejandro A. Royo

Resource Management and Use
Inventory and Monitoring
2015NRS
Photo of
ID: 217
Landscape-level Deer Herd Reductions Restore Forest Understory Plant Communities but Not Species Diversity

Since 2001, NRS scientist Alejandro Royo has tracked the response of herbaceous plant communities to deer herd reductions throughout the 70,000- ...

Principal Investigator : Alejandro A. Royo

Resource Management and Use2010NRS
Photo of LiDAR-derived map of canopy cover for the Bartlett Experimental Forest and surrounding area. Values are a percentage; the dark blue colors are 100 percent canopy closure. Coeli M Hoover, U.S. Department of Agriculture Forest Service.
ID: 1075
LiDAR: A Bird’s-Eye Look at Wildlife Habitat

Wildlife species often prefer habitats with specific characteristics. For example, many birds need dense brushy areas where they can safely nest ...

Principal Investigator : Coeli Hoover

Resource Management and Use
Inventory and Monitoring
Wildlife and Fish
2016NRS
Photo of Soil pit with golf tees marking horizons to be sampled. Robert Long, USDA Forest Service
ID: 650
Liming Effects Help Maintain Sugar Maple Growth and Health and Persist for More Than 20 years

Long-term inputs of acidic deposition have depleted soils of calcium (Ca) and magnesium (Mg) on ridge-top, unglaciated sites in Pennsylvania. Su ...

Principal Investigator : Robert P. Long

Water, Air, and Soil
Resource Management and Use
2014NRS
Photo of Deer browsing exerts top-down selection on plant communities, which over time ricochets back up the trophic web to affect insects and birds. Forestry Sciences Laboratory, Irvine, PA
ID: 315
Long-Term Differences in Forests With Different Deer Densities

Thirty years after a study on the effects of deer on forest ecosystems established new forest stands at deer densities ranging from 10 to 64 dee ...

Principal Investigator : Scott H. Stoleson

Wildlife and Fish
Resource Management and Use
2011NRS
Photo of Lime application in 1985. USDA Forest Service
ID: 760
Long-Term Effects of Forest Liming on Soil, Soil Leachate, and Foliage Chemistry in Northern Pennsylvania

In many areas of the northeastern United States and Canada, base cations have been depleted by long-term inputs of acidic deposition. Forest lim ...

Principal Investigator : Robert P. Long

Water, Air, and Soil2015NRS
Photo of
ID: 1200
Managing the foodscape to alleviate deer browsing

Forest plant biodiversity is being degraded by browsing from overabundant deer herds, but forest management can alleviate impacts. Research by F ...

Principal Investigator : Alejandro A. Royo

 2017NRS
Photo of
ID: 215
Monitoring of the Invasive Tree, Ailanthus, Takes Flight Over Ohio Forests

Ailanthus altissima, a rapidly growing invasive non-native tree, is spreading into many forested landscapes in the eastern United States and dis ...

Principal Investigator : Joanne Rebbeck

Invasive Species2010NRS
Photo of  The WFDS model was used to simulate the interaction between flame and stem and is being used to provide input data for a stem heating model (FireStem2D). Tony Bova, USDA Forest Service
ID: 477
More Realistic Model of Tree Trunk Heating and Injury in Wildland Fires Now Available

Forest Service scientists developed new models of tree-stem heating that are the most physically realistic to date to predict tree mortality mor ...

Principal Investigator : Matthew B. Dickinson

Wildland Fire and Fuels2013NRS
Photo of Dr. Mark Twery of the NRS describing the structure of a dandelion stem to participants in the Moving Field Guide workshop at Patterson Park in Baltimore. Steward Pickett, Baltimore Ecosystem Study LTER, Cary Institute of Ecosystem Studies
ID: 348
Moving Field Guides: Learning ecology through dance

Children in Baltimore, MD, are working with Forest Service researchers and the Dance Exchange, a professional dance company, to turn their obser ...

Principal Investigator : Mark Twery

Outdoor Recreation2011NRS
Photo of i-Tree PRESTO welcome screen.
ID: 1225
New addition to i-Tree family estimates carbon in wood products

Wood continues to store carbon after it is harvested, and some carbon offset programs allow landowners to receive credit for carbon in products ...

Principal Investigator : Coeli Hoover

Outdoor Recreation
Water, Air, and Soil
2017NRS
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 Ecoregions of Pennsylvania color-coded by the levels of similarity found between overstory and understory tree species composition in the Pennsylvania Regeneration Study data of 2001-2005. Todd Ristau, USDA Forest Service
ID: 655
Pennsylvania Regeneration Study Assesses Overstory and Understory Tree Species Communities

In 2001, the Commonwealth of Pennsylvania and Forest Service's Forest Inventory & Analysis (FIA) program launched the "Pennsylvania Regeneration ...

Principal Investigator : Todd Ristau

Inventory and Monitoring2014NRS
Photo of Tree-of-heaven (Ailanthus altissima) seeds and foliage, Chuck Bargeron, University of Georgia, Bugwood.org
ID: 1119
Persistence of Ailanthus Seeds in Forest Floor Seed Bank

Ailanthus is an aggressive non-native invader of mixed hardwood forests, where it can outcompete native vegetation, including both trees and oth ...

Principal Investigator : Joanne Rebbeck

Invasive Species
Resource Management and Use
2016NRS
Photo of Inoculation of ailanthus tree with fungal spores by a researcher in Wayne National Forest. USDA Forest Service
ID: 851
Possible Biocontrol Agent for the Invasive Ailanthus Tree Is Tested

Forest Service scientists from the agency’s Northern Research Station are studying a native fungus and find that it kills ailanthus (tree-of-h ...

Principal Investigator : Joanne Rebbeck

Invasive Species2015NRS
Photo of Cover of the PRESTO User Guide.
ID: 812
PRESTO: A Web-based Tool for Estimating Carbon in Wood Products

Carbon is stored not only in living trees but also in products made from the wood of harvested trees. PRESTO, an easy-to-use web-based tool for ...

Principal Investigator : Coeli Hoover

Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2015NRS
Photo of Map of the Kinzua Quality Deer Cooperative, highlighting the sub-project special hunting regulations areas sponsored by the cooperative. Susan Stout, USDA Forest Service
ID: 509
Public - Private Cooperation Improves Management of Deer and Forests

The Kinzua Quality Deer Cooperative (KQDC) was established in 2000 to test new approaches to stewardship of white-tailed deer and forest habitat ...

Principal Investigator : Susan Stout

Resource Management and Use2013NRS
Photo of Repeated prescribed fires may improve the regeneration potential of oak in canopy gaps. Forest Service
ID: 61
Repeated Prescribed Fires Help Sustain Oak Regeneration in Eastern Forests

Research findings can help managers in their quest to sustain this forest type throughout Eastern North America

Principal Investigator : Todd Hutchinson

Resource Management and Use
Water, Air, and Soil
2012NRS
Photo of Forest Service researchers measure a tree in an old-growth stand in The Bowl Research Natural Area in New Hampshire. Coeli Hoover, USDA Forest Service
ID: 465
Scientists Measure Carbon Storage in New England Old-Growth Forests

Managing forests to store carbon is one way to mitigate greenhouse gas emissions. Measuring carbon in old-growth forests helps managers understa ...

Principal Investigator : Coeli Hoover

Inventory and Monitoring
Resource Management and Use
2013NRS
Photo of One of the common ground beetles Pterostichus melanarius that responded to lepidopteran outbreaks. Todd Ristau, USDA Forest Service
ID: 495
Scientists Study Long-term Response of Ground Beetle Communities to an Operational Herbicide Application

Ground beetles comprise a large and diverse group of mostly predatory beetles that have long been recognized as a useful barometer of ecosystem ...

Principal Investigator : Todd Ristau

Resource Management and Use
Wildlife and Fish
2013NRS
Photo of Testing the effects of species source on combustion properties of Ohio Hills fuel beds at the Forest Product Laboratory. Matthew B. Dickinson, U.S. Department of Agriculture Forest Service.
ID: 1127
Shift Toward Mesophytic Species in Oak Forests May Limit Fire Reintroduction

Exclusion of fire from eastern mixed-oak forests is widely understood to be an important explanation for difficulty in regenerating oaks. Forest ...

Principal Investigator : Matthew B. Dickinson

Wildland Fire and Fuels2016NRS
Photo of Pin cherry, (Prunus pensylvanica) is an important source of food for many wildlife species. Scott Stoleson, U.S. Department of Agriculture Forest Service.
ID: 1169
SILVAH’s Gone Wild!

The SILVAH decision-support tool has provided foresters in the mid-Atlantic region a scientifically based and systematic approach to forest inve ...

Principal Investigator : Scott H. Stoleson

Resource Management and Use
Wildlife and Fish
2016NRS
Photo of Maple stump with browsed sprouts outside fence and unbrowsed, tall sprouts within fence. Alejandro A. Royo, U.S. Department of Agriculture Forest Service.
ID: 985
Sprouts as Rapid Bioassays of Browse Impact

Effective browse pressure indicators are necessary to adaptively manage forest landscapes with resident deer. Hardwood tree stump sprouts are a ...

Principal Investigator : Alejandro A. Royo

Resource Management and Use2016NRS
Photo of Tree regeneration 5 years after herciide treatment and shelterwood harvest. USDA Forest Service.
ID: 870
The Devil is in the Details for Regeneration Success in Mixed-oak Forests

To improve oak regeneration, Forest Service scientists are studying shelterwood harvest with herbicide and prescribed fire treatments. Although ...

Principal Investigator : Todd Hutchinson

Resource Management and Use2015NRS
Photo of Many forest songbirds like this scarlet tanager moved from mature forests to regenerating harvested areas after breeding. Scott Stoleson, USDA Forest Service
ID: 483
Timber Harvests Create Beneficial Habitat for Forest Birds

Many songbird species that require intact, mature forest for breeding have been found by Forest Service researchers to move into young thickets ...

Principal Investigator : Scott H. Stoleson

Wildlife and Fish2013NRS
Photo of Dead ash trees in an urban forest create a gap in the canopy, allowing sunlight to filter down to other trees and plants.
ID: 1248
Understanding effects of emerald ash borer on forests

As the invasive emerald ash borer swept across Ohio, Forest Service researchers tracked its aftermath as killed ash trees unleashed a cascade of ...

Principal Investigator : Kathleen Knight

Invasive Species2017NRS
Photo of A mixed-oak forest with a dense understory of mountain laurel in eastern Pennsylvania. Note the 8-foot range pole in the center of the photograph. Recent research shows that when mountain laurel cover exceeds 25 percent, regenerating oaks becomes extremely difficult. Pat Brose, U.S. Department of Agriculture Forest Service.
ID: 1112
Understanding Mountain Laurel’s Impact on Oak Regeneration

When did the dense understories of mountain laurel seen in some mixed-oak forests become established, and why? How dense does mountain laurel ha ...

Principal Investigator : Patrick Brose

Resource Management and Use
Wildland Fire and Fuels
2016NRS
Photo of Photo 1:  Reid Garrison in a regenerating stand where black cherry seedlings are thriving after a nitrogen fertilizer treatment.
Photo 2:  Figures show increased species diversity in fertilizer treated stands.
ID: 1261
Using fertilizer to promote diverse seedling development in Allegheny hardwood forests

Fertilizing the forest understory slows the development of dominance by sweet birch, favors development of black cherry following overstory remo ...

Principal Investigator : Todd Ristau

Resource Management and Use
Water, Air, and Soil
2017NRS
Photo of A male cerulean warbler gets fitted with a light-detecting geolocator, which will record its location as the bird migrates to its wintering grounds. Nathan Weyandt, USDA Forest Service.
ID: 636
Using New Technology To Track a Rare Songbird During Migration

The cerulean warbler is a tiny forest bird in big trouble. To better understand where these birds go when they migrate out of their Appalachian ...

Principal Investigator : Scott H. Stoleson

Wildlife and Fish2014NRS
Photo of Dempsey Middle School science students paint and dissect ash logs to understand woodpecker feeding on emerald ash borer larvae. Joanne Rebbeck, USDA Forest Service
ID: 625
Woodpeckers Capitalize on an Invasive Forest Pest

Emerald ash borer, an invasive beetle that kills ash trees, is eaten by bark-foraging birds like woodpeckers. Forest Service scientists and par ...

Principal Investigator : Kathleen Knight

Invasive Species2014NRS