Document Detail


Sulfate exports from multiple catchments in a glaciated forested watershed in western New York, USA.
MedLine Citation:
PMID:  17629785     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Sulfate (SO4(2-)) concentrations and fluxes were studied for multiple storm events in the Point Peter Brook watershed, a glaciated, forested watershed located in Western New York, USA. Investigations were performed across one large (696 ha) and three small (1.6-3.4 ha) catchments with varying extent of riparian and wetland areas. Concentrations of SO4(2-) in groundwater sources (mean values: 238-910 micromol(c) L(-1)) were considerably greater than concentrations recorded for rainfall (60 micromol(c) L(-1)) and throughfall (72-129 micromol(c) L(-1)). Seasonality in SO4(2-) concentrations was most pronounced for valley-bottom riparian waters with maximum concentrations in late winter-spring (February-March) and a minimum in late summer (August). Concentrations of SO4(2-) in wetland water were considerably less than riparian water indicating the likelihood of SO4(2-) reduction in anoxic wetland conditions. Storm events displayed a dilution pattern in SO4(2-) concentrations with a minimum coinciding with the maximum in throughfall contributions. End member mixing analysis (EMMA) was able to predict the storm event concentrations of SO4(2-) for four of the six comparisons. Concentrations of SO4(2-) at the outlet of the large (696 ha) catchment were much greater than values recorded for the smaller catchments. Exports of SO4(2-) in streamflow exceeded the inputs from atmospheric deposition suggesting that watersheds like Point Peter Brook may not show any immediate response to decreases in atmospheric SO4(2-) deposition.
Authors:
Shreeram P Inamdar; Myron J Mitchell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-07-14
Journal Detail:
Title:  Environmental monitoring and assessment     Volume:  139     ISSN:  0167-6369     ISO Abbreviation:  Environ Monit Assess     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-03-05     Completed Date:  2008-07-31     Revised Date:  2009-05-11    
Medline Journal Info:
Nlm Unique ID:  8508350     Medline TA:  Environ Monit Assess     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  227-45     Citation Subset:  IM    
Affiliation:
Bioresources Engineering, University of Delaware, Newark, DE 19716, USA. inamdar@udel.edu
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MeSH Terms
Descriptor/Qualifier:
New York
Sulfates / analysis*
Trees*
Water Pollutants, Chemical / analysis*
Chemical
Reg. No./Substance:
0/Sulfates; 0/Water Pollutants, Chemical

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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