Main Title |
Statistical Evaluation of the EMAP-Wetlands Classification. |
Author |
Ernst, T. L. ;
Leibowitz, N. C. ;
|
CORP Author |
ManTech Environmental Technology, Inc., Corvallis, OR. ;Oregon Div. of State Lands, Salem.;Corvallis Environmental Research Lab., OR. |
Publisher |
1993 |
Year Published |
1993 |
Report Number |
EPA-68-C8-0006 ;EPA-68-03-3532; EPA/600/A-93/121; |
Stock Number |
PB93-199446 |
Additional Subjects |
Wetlands ;
Environment management ;
Environmental impact assessments ;
Ecosystems ;
Illinois ;
Washington ;
North Dakota ;
South Dakota ;
Pollution monitoring ;
Natural resource management ;
EMAP(Environmental Monitoring and Assessment Program) ;
NWI(National Wetlands Inventory)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB93-199446 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
34p |
Abstract |
The study evaluates how well the EMAP-Wetlands sampling design estimates the wetland resource represented by the U.S. Fish and Wildlife Services's NWI digital wetlands data for portions of Illinois, Washington, and North and South Dakota. The EMAP-Wetlands sampling design was evaluated by comparing numbers of wetland polygons, total areas, and common versus rare classes in the EMAP sample to the NWI data base. Summary statistics demonstrate that the EMAP sample estimates compare well to the known population parameters, except for rare wetland classes. Rare EMAP classes, defined as comprising < 1 percent of the total number or total area of wetlands in a region, were estimated with poor accuracy and precision. Rare EMAP classes, in these regions, included saturated palustrine emergents, saturated emergents along rivers, and saturated forested/scrub-shrub wetlands along rivers. |
Supplementary Notes |
Pub. in Proceedings of INTECOL IV International Wetlands Conference, Columbus, OH., September 1992. See also PB91-149526. Prepared in cooperation with Oregon Div. of State Lands, Salem. Sponsored by Corvallis Environmental Research Lab., OR. |
NTIS Title Notes |
Symposium paper. |
Category Codes |
48G; 48B; 68D; 57H |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
321821640 |
Origin |
NTIS |
Type |
CAT |