Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F10%3A00348967" target="_blank" >RIV/67985831:_____/10:00348967 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA
Original language description
Mean annual concentrations of SO42- and NO3- in wet-only deposition have decreased between 1988 and 2006 at BBWM due to decreased emissions of SO2 and NOx. Base cations, NH4+ and Cl- concentrations mostly exhibited no trends or statistically significanttrends but with change of < 1 ueq L-1 per year from 1988 to 2006. Seasonally, two chemically distinct periods of precipitation (April to September) and (October to March) indicate two different trajectories of air mass movement: dominantly continental sources in the warm season with increased SO42- and NH4+ and mixed continental and marine sources in the cool season with increased inputs of marine aerosols. The major factors driving seasonality of the streams are hydrology, vegetation activity, and temperature. The low flow periods June - October were typical with greater contribution of the deeper flow solutions and increased pH value, anion neutralizing capacity, Si concentration, non-marine Na and low Ali concentrations.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Monitoring and Assessment
ISSN
0167-6369
e-ISSN
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Volume of the periodical
171
Issue of the periodical within the volume
1/4
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
23
Pages from-to
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UT code for WoS article
000283592800003
EID of the result in the Scopus database
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