Horn's pond. Acid Deposition
The A.T. MEGA-Transect deposition effects study will evaluate the condition and sensitivity of the Trail with respect to acidic deposition by investigating current impacts and identifying deposition "critical loads." The study will also predict the time needed for ecosystem recovery under future deposition scenarios.
Historical image of American chestnut (Castanea dentata) growing on agricultural land. American Chestnut
In 2008, scientists and volunteers from the American Chestnut Foundation and Potomac Appalachian Trail Club (PATC) began training volunteers to collect data on American chestnut trees identified along the Appalachian Trail.
Mammal photographed by motion-sensing camera on the Appalachian Trail. Mammal Occupancy
Data from this program we be used to develop models for predicting the occurrence of mammal species along the Appalachian Trail corridor.
NBII data management portal.  [Photo: NBII-SAIN] Mountain Birds
Trained volunteers collect data about mountain bird populations by conducting surveys along specified routes through high-elevation forest habitat. Data are used to study changes in mountain bird population levels
Marsh Billings Rockefeller National Park in fall. Phenology Monitoring
This project will serve as a pilot to show how a park may incorporate phenology monitoring into its inventory and monitoring activities, helping to meet monitoring, research, management, and education needs.
Camera.  [Photo: U.S. National Park Service] Photo Monitoring
This project exists to review existing photo monitoring methodologies, extract desirable procedures and techniques and combine them into a Standard Operating Procedure (SOP).
Gray's Lily along the Appalachian Trail. Rare Plant Monitoring
By tracking the status of rare plant or community occurrences, the A.T. managing partners can ensure that A.T. related activities and management decisions are not adversely affecting these natural resources.
Forested area along the Appalachian Trail Vegetation Mapping
The primary objective of this project is to develop a spatially referenced vegetation geodatabase.
Little Rock Pond along the Appalachian Trail. Water Resources Inventory
The objective of this Level 1 inventory is to characterize the general water-quality conditions for high-elevation tributaries and natural ponds along and near to the A.T., from Georgia to Maine.

The NBII Program is administered by the Biological Informatics Program of the U.S. Geological Survey
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