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  • 1
    Electronic Resource
    Electronic Resource
    Watershed factors affecting stream acidification in the White Mountains of New Hampshire, USA (1987)
    Springer
    Environmental management 11 (1987), S. 53-60 
    Details
    ISSN: 1432-1009
    Keywords: Acid precipitation ; Acidification ; New Hampshire ; Ponds ; Rock weathering ; Stream chemistry ; Streams ; White Mountains
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The streams tributary to acidic Cone Pond, pH 4.5–4.8, and circumneutral Black Pond, pH 5.3–6.4, in the White Mountains of New Hampshire, USA, were monitored for a year. The watersheds of these two ponds were characterized in terms of geology and stream hydrology. Chemical gradients and patterns in rock weathering and groundwater discharge explain many of the differences in mineral content and acidity of the streams. The rocks of Black watershed produced an average of ten times the equivalent of basic cations as rocks from Cone watershed. This is on the same order as the difference in acidity of the two streams. Down-stream changes in stream chemistry follow differing patterns, but reflect the same principle of residence time and water path length controlling chemical evolution of streamwater. Watershed and aquatic managers may use these parameters in an inexpensive and simple assessment of the susceptibility of individual streams and ponds to acidification. A method is recommended to determine quickly the potential influence of bedrock type to aquatic chemistry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01867179
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison of Long-Term Precipitation Chemistry Measurements at the Hubbard Brook Experimental Forest, New Hampshire (2000)
    Springer
    Water, air & soil pollution 120 (2000), S. 359-379 
    Details
    ISSN: 1573-2932
    Keywords: acidic deposition ; acid rain ; NADP ; precipitation chemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract From 1978 through 1989, a wet-onlyprecipitation collector operated for the NationalAtmospheric Deposition Program, an independantwet-only collector, and a bulk precipitation collectorwere co-located at the Hubbard Brook ExperimentalForest (HBEF) in central New Hampshire. A secondbulk precipitation collector was maintained at anotherlocation within the HBEF. There were statisticallysignificant differences between the chemistry fromco-located wet-only collections for Ca2+,K+, NH4 +, pH, and NO3 -. Thedifferences for K+ and pH though statisticallysignificant were very small but consistant. Thedifferences for Ca2+ were related to earlycontamination problems, and differences inNH4 + and NO3 - were related toepisotic events. Bulk precipitation was significantlyricher in K+ than wet-only precipitation. Therewere no differences for any ions between the bulkcollections at the two locations. While there wereminor differences, after 1981 when the contaminationproblems had been resolved, data from all collectorsat all locations adequately characterized theprecipitation chemistry of the site.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005258723010
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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