Main Title |
Animo Acid Composition of Suspended Particles, Sediment-Trap Material, and Benthic Sediment in the Potomac Estuary. |
Author |
Sigleo, A. C. ;
Shultz, D. J. ;
|
CORP Author |
Environmental Research Lab.-Narragansett, Newport, OR. Pacific Ecosystems Branch. ;Geological Survey, Reston, VA. |
Publisher |
1993 |
Year Published |
1993 |
Report Number |
EPA/600/J-94/221 ;ERLN-N207; |
Stock Number |
PB94-169968 |
Additional Subjects |
Amino acids ;
Organic matter ;
Sediments ;
Potomac Estuary ;
Suspended solids ;
Dissolved oxygen ;
Euphotic zone ;
Benthos ;
Deposition(Sediments) ;
Seasonal variations ;
Nitrogen cycle ;
Marine biology ;
Biochemistry ;
Sediment-water interfaces ;
Environmental transport ;
Carbon cycle ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB94-169968 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
13p |
Abstract |
Sediment trap deployments in estuaries provide a method for estimating the amount of organic material transported to the sediments from the euphotic zone. The amino acid composition of suspended particles, benthic sediment, and sediment-trap material collected at 2.4 m, 5.8 m, and 7.9 m depths in the Potomac Estuary was determined in stratified summer waters, and in well-mixed oxygenated waters (DO) in late fall. Analysis of the flux results suggest that resuspension combined with lateral advection from adjacent slopes can account up to 27% of the material in the deep traps when the estuary was well-mixed and unstratified. When the estuary was stratified in late summer, the amino acid carbon produced by primary productivity in the euphotic zone decreased by 85% (86% for total organic carbon) at the pycnocline at 6 m depth, leaving up to 15% of the vertical organic flux available for benthic sediment deposition. |
Supplementary Notes |
Pub. in Estuaries, v16 n3A p405-415 1993. Prepared in cooperation with Geological Survey, Reston, VA. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Animo Acid Composition of Suspended Particles, Sediment-Trap Material, and Benthic Sediment in the Potomac Estuary. |
Category Codes |
47C; 47D |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/05 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
418226486 |
Origin |
NTIS |
Type |
CAT |