| Main Title |
Eelgrass Distribution in the Great Bay Estuary for 2010. |
| Author |
F. T. Short
|
| CORP Author |
New Hampshire Univ., Durham. Jackson Estuarine Lab.; Environmental Protection Agency, Washington, DC. |
| Year Published |
2011 |
| Stock Number |
PB2012-103957 |
| Additional Subjects |
Eelgrass distribution ;
Great Bay Estuary ;
Habitat ;
Waterfowl ;
Juvenile fish ;
Estuarine food ;
Eelgrass(Zostera marina) ;
Great Bay Estuary(GBE)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB2012-103957 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
9p |
| Abstract |
Eelgrass in the Great Bay Estuary in 2010 was once again mainly present in the Great Bay itself with limited distribution in Portsmouth Harbor. In 2010, Portsmouth Harbor experienced a 9% loss of eelgrass distribution since 2009, for a loss of 46.7% of the Harbors eelgrass distribution since 1996, an alarming trend. For the third year in a row in the Piscataqua River, there was no eelgrass. A small eelgrass bed appeared in Little Bay close to an expanding bed in Great Bay. Eelgrass distribution in Great Bay itself increased 12% between 2009 and 2010, primarily due to establishment of new beds from natural seeding of bare areas. However, in Great Bay itself there has been a 64% loss of eelgrass biomass since 1996 accompanied by a loss of 21% of eelgrass distribution. Nuisance macroalgae in Great Bay continued to proliferate in 2010 and impact eelgrass by smothering eelgrass shoots and reducing shoot density. The abundance of epiphytes growing on eelgrass in Great Bay greatly increased in 2010. The trends of loss in Portsmouth Harbor of both eelgrass distribution and percent cover continue. The gains in eelgrass distribution from 2009 to 2010 in Great Bay Estuary are small in comparison to the overall losses since 1996 (29% loss of distribution in the Estuary). While the short-term trend may seem encouraging, the 2010 gains are largely a result of plant reproductive response to nitrogen stress and the 2010 growing seasons ideal weather conditions for eelgrass growth. The 2010 gains do not offset the longer-term trend of decline and as yet we do not know if the newly created beds survived the subsequent winter. |
| Supplementary Notes |
See also PB2012-103956 (Report for 2009). Sponsored by Environmental Protection Agency, Washington, DC. |
| 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 |
15 Jun 2011 |
| Category Codes |
98F |
| NTIS Prices |
PC A02 |
| Document Type |
NT |
| Medium |
Final rept |
| Cataloging Source |
NTIS/MT |
| Control Number |
111400510 |
| Origin |
NTIS |
| Type |
CAT |
