| Main Title |
Ecoregions of the conterminous United States / |
| Author |
Omernik, James M. ;
Omernik, J. M.
|
| CORP Author |
Corvallis Environmental Research Lab., OR. |
| Publisher |
Corvallis Environmental Research Laboratory, U.S. Environmental Protection Agency, |
| Year Published |
1986 |
| Report Number |
EPA/600/J-87/148; |
| Stock Number |
PB88-148978 |
| OCLC Number |
16715777 |
| Subjects |
Ecology--United States--Maps ;
Ecological regions--United States--Maps ;
Biotic communities--United States--Maps
|
| Additional Subjects |
Aquatic biology ;
Natural resources ;
Marine biology ;
Regional planning ;
Maps ;
Land use ;
Surfaces ;
Topography ;
Vegetation ;
Soils ;
Water pollution ;
Research management ;
Lakes ;
United States ;
Ecosystems
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ESAD |
EPA 1135 |
|
Region 10 Library/Seattle,WA |
03/05/1993 |
| NTIS |
PB88-148978 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
1 map : color ; 43 x 66 cm, folded to 22 x 17 cm |
| Abstract |
A map of ecoregions of the conterminous United States has been compiled to assist managers of aquatic and terrestrial resources in understanding the regional patterns of the realistically attainable quality of these resources. The ecoregions are based on perceived patterns of a combination of causal and integrative factors including land use, land surface form, potential natural vegetation, and soils. A synoptic approach similar to that used to define these ecoregions is also useful for applications of the map. Initial efforts to use the framework are at the state level of resource management; they center on aquatic ecosystems - mainly attainable ranges in chemical quality, biotic assemblages, and lake trophic state. |
| Notes |
Table includes notes on land-surface form, potential natural vegetation, land use, and soils. "Supplement to the Annals of the Association of American Geographers, volume 77, number 1." Accompanied by text: Map supplement, ecoregions of the conterminous United States. [9] p. ; 26 cm. On verso: Table 1, Characteristics of ecoregions in the conterminous United States as shown on the four component maps used to determine ecoregion boundaries. |
| Place Published |
{Corvallis, Or.} : |
| Supplementary Notes |
Pub. in Annals of the Association of American Geographers, v77 n1 p118-125 Mar 87. |
| Corporate Au Added Ent |
Corvallis Environmental Research Laboratory. ; Corvallis Environmental Research Laboratory. |
| PUB Date Free Form |
1986. |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| LCCN |
87691750 /MAPS |
| Merged OCLC records |
1086763859 |
| OCLC Time Stamp |
19930727125908 |
| Language |
ENG |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01246nem 2200289 a 45020 |
