| Main Title |
Near infrared aerial photo-detection of Zostera Japonica communities in Pacific Northwest estuarine intertidal habitats / |
| Author |
Specht, David T. ;
Fernaldi, A. ;
Landers, D. ;
Wigington, P. J.
|
| Other Authors |
|
| CORP Author |
Corvallis Environmental Research Lab., OR. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, National Health and Ecologocal Effects Research Laboratory, |
| Year Published |
2000 |
| Report Number |
EPA/600/A-00/026 |
| Stock Number |
PB2000-107420 |
| Additional Subjects |
Water quality ;
Aquatic habitats ;
Willamette River ;
Aquatic biology ;
Oregon ;
Hydrology ;
Flow rate ;
Ecosystems management ;
Surface waters ;
Ground water ;
Wetlands ;
Temperature effects ;
Hyporheic processing
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB2000-107420 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
8 pages : illustrations ; 28 cm |
| Abstract |
Water quality changes along hyporheic flow paths may have important effects on river water quality and aquatic habitat. Previous studies on the Williamette River, Oregon, showed that river water follows hyporheic flow paths through highly porous deposits created by river channel meandering. To determine water quality changes associated with hyporheic flow, we studied six bar deposits positioned between the river and closed lentic side-channel alcoves. At each site we measured water levels and water quality in river, hyporheic, and alcove water. At all sites we found hyporheic flow paths from the river through the bar deposits to the alcove surface water. At a majority of the sites hyporheic dissolved oxygen and ammonium decreased relative to river water, while hyporheic specific flow rates, hyporheic temperature decreased relative to river water, and there was little change in temperature at the other three sites. Hypoheic changes most affected receiving alcove water quality at sites with fast hyporheic flow rates. Strategies to promote ecosystem functions provided by hyporheic flow should focus on restoring natural hydrogeophmorphic river channel processes to create high porosity deposits conducive to hyporheic flow. |
| Notes |
"EPA/600/A-00/026." Microfiche. |
| Place Published |
Corvallis, OR : U.S. Environmental Protection Agency, Office of Research and Development, National Health and Ecologocal Effects Research Laboratory, |
| Availability Notes |
Product reproduced from digital image. 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.fedworld.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| Corporate Au Added Ent |
United States. Environmental Protection Agency. Office of Research and Development. ; National Health and Ecological Effects Research Laboratory. ; OAO Corporation. |
| PUB Date Free Form |
2000. |
| NTIS Prices |
PC A02/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20010926173131 |
| Language |
eng |
| Origin |
NTIS |
| Type |
MERGE |
| OCLC Rec Leader |
01248nam 2200277Ka 45020 |
