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Main Title Paleoecological analysis of lake acidification trends in North America and Europe using diatoms and chrysophytes
Author Charles, D. F. ; Battarbee, R. W. ; Renberg, I. ; van Dam, H. ; Smol, J. P.
Other Authors
Author Title of a Work
Charles, Donald F.
CORP Author NSI Technology Services Corp., Corvallis, OR. ;Indiana Univ., Bloomington. ;University Coll., London (England). Palaeoecology Research Unit. ;Umea Univ. (Sweden). Dept. of Ecological Botany.;Corvallis Environmental Research Lab., OR.
Publisher NSI Technology Services Corp.,
Year Published 1989
Report Number EPA/600/D-89-106 ; ERL-COR-9770; EPA-68-C8-0006
Stock Number PB90-113762
Subjects Acid deposition ; Limnology--North America ; Limnology--Europe ; Acidification
Additional Subjects Diatoms ; Lakes ; Acidification ; Paleoecology ; Europe ; North America ; Air water interactions ; Chrysophyta ; pH ; Water pollution ; Air pollution ; Precipitation(Meteorology) ; Sediment ; Watersheds ; Trends ; Limnology ; Acid neutralizing capacity ; Acid rain
Library Call Number Additional Info Location Last
NTIS  PB90-113762 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ii, 85, {25} p. : ill., maps
Abstract Analysis of sediment diatom and chrysophyte assemblages is the best technique currently available for inferring past lakewater pH trends; use of this approach is increasing rapidly. Sediment core inferred pH data exist for at least 100 lakes in both North America and Europe. The number will approximately double within the next two years. The pH inference equations are based on at least 15 calibration data sets for North America and 10 for Europe, involving totals of at least 500 and 300 lakes, respectively. Paleoecological studies indicate that recent acidification has been caused by acidic deposition. In most cases, the primary cause of recent acidification trends (post-1850) is atmospheric deposition of acidic material, as opposed to land use changes or natural processes, though these may be contributing factors. Acid loading has decreased in some regions since 1970; some lakes have become less acidic in response, but others continue to lose buffering capacity and are becoming more acidic. Many currently acidic lakes were naturally acidic (pH < 5.5) prior to the onset of anthropogenic acidification. These lakes are typically small (< 10 ha), located at moderately high elevations, have thin or peaty soils, or are located in outwash deposits. Many of these have acidified further recently.
Notes "Final draft (fourth)" "Prepared for Corvallis Environmental Research Lab., OR"--Cover. Chapter for volume 2 of "Acid precipitation" part of 'Advances in environmental sciences' series. "ERL-COR-9770" "EPA/600/D-89-106" "PB90-113762" Includes bibliographical references (p. 54-85).
Place Published Corvallis, OR :
Supplementary Notes Pub. in Acid Precipitation, v2 p49-70. Prepared in cooperation with Indiana Univ., Bloomington, University Coll., London (England). Palaeoecology Research Unit, and Umea Univ. (Sweden). Dept. of Ecological Botany. Sponsored by Corvallis Environmental Research Lab., OR.
Corporate Au Added Ent NSI Technology Services. ; Corvallis Environmental Research Laboratory.
PUB Date Free Form 1989.
NTIS Prices PC A06/MF A01
BIB Level m
Cataloging Source OCLC/T
OCLC Time Stamp 20001003162049
Language eng
Origin NTIS
OCLC Rec Leader 01421cam 2200373Ia 45020