Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of Color Imagery and Direct Referencing for Mapping Submersed Aquatic Vegetation in Chesapeake Bay. Final Report.
Author D. J. Wilcox ; R. J. Orth ; J. R. Whiting ; A. K. Kenne ; A. L. Owens
Other Authors
Author Title of a Work
L. S. Nagey
CORP Author William and Mary Coll., Gloucester Point, VA. Inst. of Marine Science.; Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program.
Year Published 2009
Report Number CB973636-01-0
Stock Number PB2011-110140
Additional Subjects Chesapeake Bay ; Aquatic plants ; Vegetation ; Image processing ; Maps ; Water pollution control ; Monitoring ; Water quality ; Aquatic ecosystems ; Biological indicators ; Trends ; Aerial photography ; Global information systems
Library Call Number Additional Info Location Last
NTIS  PB2011-110140 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/09/2011
Collation 15p
The Chesapeake Bay supports a variety of species of submersed aquatic vegetation, from Zostera marina in the lower bay to a collection of freshwater species in the upper bay and tributaries. In the late 1970s, analysis of aerial photography conducted at VIMS documented an unprecedented decline in submersed aquatic vegetation in Chesapeake Bay and suggested a direct link with declining water quality in the Bay (Orth & Moore, Chesapeake Bay: An unprecedented decline in submerged, 1983). Recognizing the importance of SAV as both a key indicator of water quality conditions and a provider of ecological services that are critical to the health of the Bay (Dennison, et al., 1993), VIMS initiated an annual SAV monitoring program in 1984 with funding from a variety of sources including the EPA Bay Program, state management agencies, and private funds. The goal of the program is to monitor the distribution and abundance of SAV in the Bay and its tributaries each year as part of the effort to monitor success of Bay cleanup. The most effective available technology is used to achieve this goal, while ensuring that the annual assessment is consistent with the long-term record of SAV trends in the region.