| Main Title |
Distribution and abundance of submerged aquatic vegetation in the lower Chesapeake Bay, Virginia / |
| Author |
Orth, Robert J. ;
Moore, Kenneth ;
Gordon, Hayden
|
| Other Authors |
|
| CORP Author |
United States. Environmental Protection Agency. Office of Research and Development.; United States. Environmental Protection Agency. Chesapeake Bay Program. |
| Publisher |
Office of Research and Development, U.S. Environmental Protection Agency, |
| Year Published |
1979 |
| Report Number |
EPA-600/8-79-029/SAV 1; EPA report number 600/8-79-029/SAV 1; EPA-R-805951-01 |
| Stock Number |
PB80-140726 |
| OCLC Number |
07375325 |
| Subjects |
Aquatic plants--Chesapeake Bay (Md and Va) ;
Atlantic Ocean--Chesapeake Bay
|
| Additional Subjects |
Aquatic plants--Chesapeake Bay ;
Chesapeake Bay ;
Aerial surveys ;
Distribution(Property) ;
Abundance ;
Classifications ;
Aerial photographs ;
Sea grasses ;
Periodic variations ;
Maps ;
Salinity ;
Fresh water ;
Tables(Data) ;
Zostera marina ;
Ruppia maritima
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EHAM |
QK191.O7 |
|
Region 1 Library/Boston,MA |
04/29/2016 |
| EJAD |
EPA 600/8-79-029/SAV 1 |
2 cys |
Region 3 Library/Philadelphia, PA |
04/16/1993 |
| EJDD |
CB 00340 |
|
Env Science Center Library/Ft Meade,MD |
05/10/1997 |
| EJED |
EPA 600/8-79-029/SAV 1 |
|
OCSPP Chemical Library/Washington,DC |
02/18/2005 |
| ELBD ARCHIVE |
EPA 600-8-79-029SAV 1 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 600-8-79-029/SAV 1 |
|
Region 10 Library/Seattle,WA |
04/19/2017 |
| NTIS |
PB80-140726 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xiv, 199 pages : illustrations, maps ; 27 cm |
| Abstract |
The distribution and abundance of Submerged Aquatic Vegetation (SAV) in the lower Chesapeake Bay is given in the report. All SAV were mapped from aerial imagery onto topographic quads (1:24000) with a zoom transfer scope. The SAV beds were classified into 4 density categories based on comparison with a crown density scale. A comparison with earlier surveys indicates that the distribution of the SAV species found in the saline portions of the Bay have shifted. SAV beds in six selected areas of the lower Bay were examined for historical changes in the distribution and abundance of SAV. Significant declines were noted in the period of 1971 through 1978. The distribution of SAV species in Virginia's tidal waters was classified into three groupings: (1) (Zostera and Ruppia) dominates the saline portions (2) (Potamogeton, Zannichelia) Ologohaline regions (3) (Ceratophylum, Majas) fresh water. |
| Notes |
"Chesapeake Bay Program, U.S. Environmental Protection Agency, Region III." "September 1979." "October 1979"--Cover. Includes bibliographical references (pages 97-100). "Contract no. EPA R805951010." "EPA report number 600/8-79-029/SAV1." "EPA 600/8-79-029/SAV 1"--Cover. |
