Record Display for the EPA National Library Catalog

RECORD NUMBER: 34 OF 69

OLS Field Name OLS Field Data
Main Title Hydrologic Nutrient Cycle Interactions in Undisturbed and Manipulated Ecosystems (Watersheds).
Author Gos, James R. ;
CORP Author New Mexico State Univ., University Park. Water Resources Research Inst.
Year Published 1973
Report Number WRRI-031; OWRR-A-039-NMEX; 01110,; A-039-NMEX(4)
Stock Number PB-225 139
Additional Subjects ( Biochemical cycles ; Watersheds) ; ( Water chemistry ; Watersheds) ; ( New Mexico ; Watersheds) ; Bioassay ; Hydrography ; Nutrients ; Ecology ; Calcium ; Concentration(Composition) ; Magnesium ; Sodium ; Potassium ; Nitrogen ; Trace elements ; Vegetation ; Birds ; Baseline measurements
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-225 139 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 38p
Abstract
Nutrient cycling studies have proven valuable in explaining the presence, abundance, and seasonal variation of elements in stream water. The long term objectives of this project are to understand mineral cycling and stream water chemistry of forested watersheds in New Mexico as influenced by vegetational communities, climatic conditions, weathering of soil minerals, and man. Studies to date show water quality changes over elevation, with the lowest concentrations of elements occurring at the highest elevations. This trend is consistent throughout the year; however, actual concentration values vary due to the source of water and seasonal patterns of biological activity. Variation in concentration is greatest at lower elevations. The reasons for the higher concentrations at lower elevations are increased evapotranspiration and a combination of biological controls and bedrock weathering differences. (Modified author abstract)