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The evolution of the science of Bear Brook Watershed in Maine, USA
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SYSNO ASEP 0348935 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The evolution of the science of Bear Brook Watershed in Maine, USA Author(s) Norton, S. A. (US)
Fernandez, I. J. (US)
Kahl, J. S. (US)
Rustad, L. E. (US)
Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
Almquist, H. (US)Source Title Environmental Monitoring and Assessment. - : Springer - ISSN 0167-6369
Roč. 171, 1/4 (2010), s. 3-21Number of pages 19 s. Publication form WWW - WWW Language eng - English Country NL - Netherlands Keywords Bear Brook Watershed in Maine ; acidification ; stream ; soil ; nitrogen ; sulfur ; phosphorus ; base cations Subject RIV DD - Geochemistry CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000283592800002 EID SCOPUS 78149412638 DOI 10.1007/s10661-010-1528-y Annotation The Bear Brook Watershed in Maine, USA is a paired watershed study with chemical manipulation of one watershed (West Bear = WB) while the other watershed (East Bear = EB) serves as a reference. Characterization of hydrology and chemical fluxes occurred in1987-1989, and demonstrated the similarity of the ca. 10 ha adjacent forested watersheds. From 1989-2010 we have added 1,800 eq (NH4)2SO4 ha-1 y-1 to WB. The 20-year chemical treatment with continuous measurements of critical variables in both watersheds has enabled the identification of decadal long processes, including declining SO4-2 in precipitation and in EB, evolving soil mechanisms that resist pH decrease, loss of soil base saturation, dramatically altered P biogeochemistry, unexpected mechanisms of storage of treatment S, and continuous high retention of treatment N. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2011
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