Počet záznamů: 1
The evolution of the science of Bear Brook Watershed in Maine, USA
- 1.
SYSNO ASEP 0348935 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The evolution of the science of Bear Brook Watershed in Maine, USA Tvůrce(i) 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)Zdroj.dok. Environmental Monitoring and Assessment. - : Springer - ISSN 0167-6369
Roč. 171, 1/4 (2010), s. 3-21Poč.str. 19 s. Forma vydání WWW - WWW Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Bear Brook Watershed in Maine ; acidification ; stream ; soil ; nitrogen ; sulfur ; phosphorus ; base cations Vědní obor RIV DD - Geochemie CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000283592800002 EID SCOPUS 78149412638 DOI 10.1007/s10661-010-1528-y Anotace 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. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2011
Počet záznamů: 1