Main Title |
Distribution of Submersed Aquatic Vegetation in the Fresh and Oligohaline Tidal Potomac River, 2005. |
Author |
N. B. Rybicki ;
E. M. Justiniano-Velez ;
E. R. Schenk ;
J. M. Baldizar ;
S. E. Hunter
|
CORP Author |
Geological Survey, Reston, VA. |
Year Published |
2008 |
Report Number |
USGS-OFR-2008-1218 |
Stock Number |
PB2011-108353 |
Additional Subjects |
Aquatic plants ;
Environmental surveys ;
Submerged plants ;
Ecosystems ;
Habitats ;
Vegetation ;
Biomass ;
Tidal marshes ;
Aquatic productivity ;
Water quality ;
Submersed Aquatic Vegetation(SAV) ;
Potomac River
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB2011-108353 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
40p |
Abstract |
Submersed aquatic vegetation (SAV) is a critical component of the Potomac River ecosystem (Fig. 1). Though SAV provides important habitat for fauna and stabilizes bottom sediment, very dense beds may restrict recreational and commercial navigation. Exotic species of SAV are managed by the Metropolitan Washington Council of Governments Potomac Aquatic Plant Management Program (PAPMP). Selected beds of primarily exotic SAV species that limit navigation are harvested mechanically. The program began in 1986 when approximately 40 acres of plants were harvested from 18 sites (Fig.1, Metropolitan Washington Council of Governments 1987). Monitoring efforts are an effective means of quantifying the distribution and abundance of the exotic species, Hydrilla verticillata (hydrilla) and other SAV species. These annual surveys provide a basis for identifying large-scale changes and trends throughout the ecosystem and allow managers to evaluate the effectiveness of resource management policies based on a reliable scientific foundation (Rybicki and Landwehr, 2007). The U.S. Geological Survey (USGS) has monitored the distribution and composition of SAV beds in the fresh and oligohaline (salinity 0.5 to 5) tidal Potomac River since 1978 using transect sampling (1978 to 1981, 1985 to 1987, and 2002) and shoreline surveys (1983 to 2005). The Government of the District of Columbia has monitored the portion of the Potomac and Anacostia Rivers within Washington DC since 1998 (Rottman, 1999; Ryan, 2005, 2006). The species of SAV observed in beds in the tidal Potomac River are incorporated into the Virginia Institute of Marine Science (VIMS) annual report on SAV distribution in Chesapeake Bay. |
Supplementary Notes |
See also PB2008-108627 (Report for 2004). |
Availability Notes |
Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. |
PUB Date Free Form |
2008 |
Category Codes |
57H; 48G; 48B; 43F; 57C; 91A |
NTIS Prices |
PC A04 |
Document Type |
NT |
Medium |
Open file rept |
Cataloging Source |
NTIS/MT |
Control Number |
119201790 |
Origin |
NTIS |
Type |
CAT |