About: Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA

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About: Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 significant trends 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. 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 significant trends 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. (en)
Title	Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA (en)
skos:prefLabel	Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA (en)
skos:notation	RIV/67985831:_____/10:00348967!RIV11-AV0-67985831
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z30130516)
http://linked.open...iv/cisloPeriodika	1/4
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Navrátil, Tomáš
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Geologický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	293841
http://linked.open...ai/riv/idVysledku	RIV/67985831:_____/10:00348967
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Bear Brook Watershed in Maine; precipitation chemistry; stream chemistry; seasonality; long-term trends (en)
http://linked.open.../riv/klicoveSlovo	long-term trends seasonality precipitation chemistry stream chemistry Bear Brook Watershed in Maine
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[8A2A968BBE3A]
http://linked.open...i/riv/nazevZdroje	Environmental Monitoring and Assessment
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	171
http://linked.open...iv/tvurceVysledku	Fernandez, I. J. Navrátil, Tomáš Norton, S. A. Nelson, S. J.
http://linked.open...ain/vavai/riv/wos	000283592800003
http://linked.open...n/vavai/riv/zamer	Zemský systém v průsečíku geologických procesů, vývoje života, klimatických a antropogenních vlivů
issn	0167-6369
number of pages	23 (xsd:int)

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