Main Title |
AQUATOX for windows : a modular fate and effects model for aquatic ecosystems. vol. 3, Model validation reports : addendum. |
Author |
Park, R. A.
|
CORP Author |
Environmental Protection Agency, Washington, DC. Office of Water. |
Publisher |
U.S. Environmental Protection Agency, Office of Water, |
Year Published |
2001 |
Report Number |
EPA 823-R-01-008 |
Stock Number |
PB2002-104397 |
OCLC Number |
67556927 |
Subjects |
Aquatic organisms--Effect of water pollution on--United States ;
Water--Pollution--United States--Analysis ;
Aquatic ecology--United States--Analysis ;
Aquatic ecology--United States--Computer simulation
|
Additional Subjects |
Ecosystem models ;
Aquatic ecosystems ;
Toxic chemicals ;
Model components ;
Applications ;
Data considerations ;
Calibration ;
Biomass ;
Documentation ;
Quality assurance ;
Validation ;
Uncertainty analysis ;
Environmental factors ;
Ecological risk models ;
AQUATOX ;
Microsoft windows
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
ELBD ARCHIVE |
EPA 823-R-01-008 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
NTIS |
PB2002-104397 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Edition |
Release 1.1. |
Collation |
vi, 35 p. : ill. ; 28 cm. |
Abstract |
The AQUATOX periphyton submodel was successfully calibrated and validated with data from Walker Branch, Tennessee. A single parameter set for diatoms, green algae, and gastropods was developed to fit all twenty treatments in a factorial experiment involving low and high nutrient levels, low and high light levels, and grazing and no grazing in stream-side channels and stream enclosures. A two-year data set for periphyton on cobbles in the stream-bed was used to validate the model for continuous ambient conditions in this woodland stream. Nitrogen, phosphorous, light, and grazing were all limiting, both singly and in combination. Inclusion of a sloughing term based on senescence due to deteriorating environmental conditions and the drag force of currents on exposed periphyton biomass provided a realistic response to limiting environmental factors and was especially useful in modeling the effects of variable flow rates on diatoms and filamentous algae. The model was shown to be calibrated and validated based on the weight of evidence of reproduction of observed patterns of biomass change, concordance of maxima between predicted and observed biomass, and equivalence in predicted and observed means and variances as confirmed by relative bias and F tests. |
Notes |
"EPA-823-R-01-008"--Cover. "November 2001." "This validation study was funded under contract numbers 68-C-98-010 and 68-C-01-0037 to AQUA TERRA Consultants, Anthony Donigian, Work Assignment Manager."--P. iii. Includes bibliographical references (p. 31-32). |
Place Published |
Washington, DC |
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.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
Corporate Au Added Ent |
United States. Environmental Protection Agency. Office of Water. |
Alternate Title |
Modular fate and effects model for aquatic ecosystems |
PUB Date Free Form |
2001 |
BIB Level |
m |
Cataloging Source |
OCLC/T |
OCLC Time Stamp |
20140103125743 |
Language |
eng |
Origin |
OCLC |
Type |
MERGE |
OCLC Rec Leader |
01508cam 2200337Ka 45020 |