Logo der Universität Basel

Research Database / FORSCHUNGSDATENBANK 
PRINTDOC
 
Publication 1877762 | Verified
 

Data Entry: Please note that the research database will be replaced by UNIverse by the end of October 2023. Please enter your data into the system https://universe-intern.unibas.ch. Thanks

Login for users with Unibas email account...

Login for registered users without Unibas email account...

 
Effects of throughfall and litterfall manipulation on concentrations of methylmercury and mercury in forest-floor percolates
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 1877762
Author(s) Hojdova, Maria; Huang, Jen-How; Kalbitz, Karsten; Matzner, Egbert
Author(s) at UniBasel Huang, Jen-How
Year 2007
Title Effects of throughfall and litterfall manipulation on concentrations of methylmercury and mercury in forest-floor percolates
Journal Journal of Plant Nutrition and Soil Science
Volume 170
Number 3
Pages / Article-Number 373-377
Abstract The forest floor was shown to be an effective sink of atmospherically deposited methylmercury (MeHg) but less for total mercury (Hgtotal). We studied factors controlling the difference in dynamics of MeHg and Hgtotal in the forest floor by doubling the throughfall input and manipulating aboveground litter inputs (litter removal and doubling litter addition) in the snow-free period in a Norway spruce forest in NE Bavaria, Germany, for 14 weeks. The MeHg concentrations in the forest-floor percolates were not affected by any of the manipulation and ranged between 0.03 (Oa horizon) and 0.11 (Oi horizon) ng Hg L–1. The Hgtotal concentrations were largest in the Oa horizon (24 ng Hg L–1) and increased under double litterfall (statistically significant in the Oi horizon). Similarly, concentrations of dissolved organic C (DOC) increased after doubling of litterfall. The concentrations of Hgtotal and DOC correlated significantly in forest-floor percolates from all plots. However, we did not find any effect of DOC on MeHg concentrations. The difference in the coupling of Hgtotal and MeHg to DOC might be one reason for the differences in the mobility of Hg species in forest floors with a lower mobility of MeHg not controlled by DOC.
Publisher Wiley
ISSN/ISBN 0044-3263 ; 1522-2624
edoc-URL http://edoc.unibas.ch/49039/
Full Text on edoc No
Digital Object Identifier DOI 10.1002/jpln.200622023
ISI-Number 000247607300008
Document type (ISI) Article
 
   

MCSS v5.8 PRO. 0.370 sec, queries - 0.000 sec ©Universität Basel  |  Impressum   |    
01/05/2024