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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of Threebe in Baltimore, looking regal after being fitted with his transmitter. The harnesses expand as the bird grows, and the transmitters are very lightweight (measured in 10’s of grams). Harriet Van Kleeck.
ID: 1175
1,000 Herons

School becomes a little more interesting when students are working with real-life herons and egrets and integrating data about birds into their ...

Principal Investigator : Barbara McGuinness

Wildlife and Fish2016NRS
Photo of Emissions from a waterside facility, contributing to air pollution. USDA Forest Service
ID: 604
Air Pollution as a Psychosocial Stressor

A Forest Service scientist and her research partners found that air pollution contributes to physical and psychosocial conditions that act as co ...

Principal Investigator : Michelle Kondo, Ph.D.

Water, Air, and Soil2014NRS
Photo of International working group meeting in Coyoacan, Mexico. NOTE: I have several other nice group photos. They all highlight our diversity. Vanessa Silva Mascorro, University of British Columbia
ID: 848
Assessment of North American Forest Carbon Dynamics: Tools for Monitoring, Reporting, and Projecting

Forest Service scientists and cooperators assessed past and prospective carbon stocks for representative study sites in Canada, the United State ...

Principal Investigator : Richard Birdsey

Water, Air, and Soil
Resource Management and Use
2015NRS
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 Photos of human uses of cleaned and greened vacant lots.
ID: 1221
Can “cleaned and greened” lots take on the role of public greenspace?

Vacant lots are a problem that cities are increasingly addressing through greening efforts. Questions remain about if and how these green space ...

Principal Investigator : Michelle Kondo, Ph.D.

 2017NRS
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 Overview map of treatment and control lots in Youngstown, OH. Michelle Kondo, U.S. Department of Agriculture Forest Service.
ID: 957
Community Greening Can Reduce Crime

In Youngstown, Ohio, vacant lots greened by community members experienced reductions in violent assaults, while vacant lots greened by contracto ...

Principal Investigator : Michelle Kondo, Ph.D.

Resource Management and Use2016NRS
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 Illustration of the relationship between case-control and case-crossover study designs. Using a case-control approach, a group of case participants who were assaulted (top right) is matched with a control group of like participants who were not assaulted (bottom right). Their environments at the same time of day can be compared for differences. Using a case-crossover approach, the environment of each case at the time of the assault can be compared to the environment each case experienced earlier in the day (top left) to rule-out the influence of factors that differ between case and control participants.
ID: 1220
Does urban tree cover play a role in reducing violence in cities?

Green space and vegetation may play a protective role for urban violence.

Principal Investigator : Michelle Kondo, Ph.D.

 2017NRS
Photo of Photos of remediated buildings and vacant lots.
ID: 1222
Economic benefits from violence reduction associated with remediation of abandoned buildings and vacant lot greening

Abandoned buildings and vacant lots are blighted spaces seen daily by many urban residents and may create physical opportunities for violence by ...

Principal Investigator : Michelle Kondo, Ph.D.

 2017NRS
Photo of Green stormwater infrastructure in Center City, Philadelphia. Rebecca Schwartz, U.S. Department of Agriculture Forest Service.
ID: 952
Elemental Concentrations in Urban Green Stormwater Infrastructure Soils

A study by a Forest Service scientist and her partners found that in an urban area, soils in green stormwater infrastructure facilities appear t ...

Principal Investigator : Michelle Kondo, Ph.D.

Resource Management and Use
Water, Air, and Soil
2016NRS
Photo of Baltimore Field Station's Quin Holifield talks to students about soils on the Gwynns Falls Trail. Mary Hardcastle, Baltimore City Department of Recreation and Parks.
ID: 1120
Every Kid in a Park is Urban, Too

President Obama’s Every Kid in a Park initiative strives to get every fourth-grader (and his or her family) out on to public lands and waters ...

Principal Investigator : Barbara McGuinness

Outdoor Recreation2016NRS
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 Eighteeen educators, administrators and community members participated in Wisconsin's first replication of Forest For Every Classroom. Barbara McGuinness, Forest Service
ID: 51
Forest For Every Classroom Engages Students in Environmental Topics

Building a network for place-based environmental education in Wisconsin

Principal Investigator : Barbara McGuinness

Invasive Species
Outdoor Recreation
Resource Management and Use
2012NRS
Photo of Urban forest species composition as a percentage of all trees, Austin, Texas. This data and more are included in FIA’s first published urban report: Austin’s Urban Forest, 2014. Tonya Lister, U.S. Department of Agriculture Forest Service.
ID: 1164
Forest Inventory and Analysis is Coming to a City Near You

In collaboration with state and local partners, the U.S. Forest Service’s Forest Inventory and Analysis Program (FIA) has begun monitoring the ...

Principal Investigator : Tonya Lister

Inventory and Monitoring2016NRS
Photo of Students get outdoor instruction as part of the Go Green Club. Nikka Labella, Bradford Area School District
ID: 658
Go Green Club Introduces Students to the Forest

The Forest Service's Northern Research Station and Allegheny National Forest are key partners in establishing the "Go Green Club," an after-scho ...

Principal Investigator : Barbara McGuinness

Invasive Species
Outdoor Recreation
Inventory and Monitoring
Resource Management and Use
Water, Air, and Soil
2014NRS
Photo of Stormwater tree trench and pervious pavers. USDA Forest Service
ID: 849
Green Stormwater Infrastructure Reduces Crime

Forest Service scientists tested the effects of green stormwater infrastructure installation on health and safety outcomes across Philadelphia ...

Principal Investigator : Michelle Kondo, Ph.D.

Water, Air, and Soil2015NRS
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 Aboveground biomass map created with LIDAR and FIA plots for Anne Arundel and Howard Counties, Maryland. Kristofer Johnson, USDA Forest Service
ID: 607
How to Build a Better Map of Tree Biomass

A logical way to validate biomass maps derived from remotely sensed data is to validate them with independent ground inventory estimates, but in ...

Principal Investigator : Kristofer Johnson

Inventory and Monitoring2014NRS
Photo of Educators can now use Hubbard Brooks long-term data sets to teach inquiry in their classrooms. J. Wilson, Hubbard Brook Research Foundation
ID: 347
Hubbard Brook Environmental Literacy Program

One of the Northern Research Station's primary partnerships supporting environmental literacy is with the Hubbard Brook Research Foundation, whi ...

Principal Investigator : Barbara McGuinness

Resource Management and Use
Water, Air, and Soil
Wildlife and Fish
2011NRS
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 Local children playing in an agricultural area converted from forest in northern Thailand. Linda S. Heath, USDA Forest Service
ID: 493
Improving Forest Inventory and Monitoring Capacity in Countries of the World

Efficient national and subnational level inventory and monitoring systems are needed to characterize carbon and other attributes of forests so t ...

Principal Investigator : Charles Scott

Inventory and Monitoring2013NRS
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 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 Pitch pine common garden plots in the Brendan T. Byrne State Forest, New Jersey, were planted in 1973 and 1974. The experiments include progeny of hundreds of trees raised from seeds collected in 72 different stands or “seed sources” throughout the natural distribution of pitch pine, ranging from Georgia to Quebec and from the coast of Maine to Ohio. John Hom, U.S. Department of Agriculture Forest Service.
ID: 1121
Long-term Provenance Trials for Selection of Future Forests

Long-term experiments initiated in 1973 and revisited in 2010 provide insights into pitch pine response to climate change and disturbance.

Principal Investigator : John Hom

Resource Management and Use2016NRS
Photo of Doors and windows remediation before and after. USDA Forest Service
ID: 855
Low-cost Urban Building Improvement Can Reduce Crime

In a study by a Forest Service scientist and her partners, Philadelphia’s “Doors-and-Windows Ordinance,” which requires repairs to abandon ...

Principal Investigator : Michelle Kondo, Ph.D.

Resource Management and Use2015NRS
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 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 Aerial view of Wisconsin Forests in the Fall. Scott Pearson
ID: 601
Past and Prospective Carbon Stocks Assessed in Forests of Northern Wisconsin

Forest Service scientists and cooperators assessed past and prospective carbon stocks for 4.5 million hectares (about 11 million acres) of fores ...

Principal Investigator : Richard Birdsey

Resource Management and Use2014NRS
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 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 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 Cleaning-and-greening at Wister Street lot.  Robert Grossmann, Pennsylvania Horticultural Society
ID: 856
Seeing a Greened Vacant Lot May Lower Stress

Studies by Forest Service scientists showed that walking adjacent to greened vacant lots decreased participants' heart rate significantly more t ...

Principal Investigator : Michelle Kondo, Ph.D.

Resource Management and Use2015NRS
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 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 Glass of clear water.
ID: 1204
Turbidity of drinking water supplies in relation to incidence of gastrointestinal illness

From examination of empirical studies of the relationship between drinking water turbidity and the number of acute gastrointestinal illness case ...

Principal Investigator : Michelle Kondo, Ph.D.

 2017NRS
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 Golden-winged warbler in young forest habitat. Laura Erickson, Cornell University
ID: 879
Young Forest Habitat Health Studied in Northeast and Midwest

Young growth is becoming the new old growth! Early succession forests in the U.S. Northeast and Midwest now account for only 8 percent of total ...

Principal Investigator : William McWilliams

Inventory and Monitoring2015NRS