LiU Electronic Press
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Author:
Svensson, Teresia (Linköping University, The Tema Institute, Department of Water and Environmental Studies) (Linköping University, Faculty of Arts and Sciences)
Lovett, Gary (Cary Institute of Ecosyste Studies, Millbrook, NY, USA)
Likens, Gene E (Cary Institute of Ecosyste Studies, Millbrook, NY, USA)
Title:
Is chloride a conservative ion in forest ecosystems?
Department:
Linköping University, Faculty of Arts and Sciences
Linköping University, The Tema Institute, Department of Water and Environmental Studies
Publication type:
Article in journal (Refereed)
Language:
English
Publisher: Springer
Status:
Published
In:
Biogeochemistry(ISSN 0168-2563)(EISSN 1573-515X)
Volume:
107
Issue:
1-3
Pages:
125-134
Year of publ.:
2012
URI:
urn:nbn:se:liu:diva-71914
Permanent link:
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71914
ISI:
000298226700009
Subject category:
Environmental Sciences
Keywords(en) :
Catchment, Chloride, Chlorine, Mass balance, Soil, Tracer, Watershed
Abstract(en) :

Chloride (Cl-) has often been assumed to be relatively unreactive in forest ecosystems, and is frequently used as a conservative tracer to calculate fluxes of water and other ions. Recently, however,several studies have detailed cycling of Cl- invegetation and soils. In this study Cl- budgets arecompiled from 32 catchment studies to determine the extent to which Cl- is conserved in the passage through forest ecosystems. Chloride budgets fromthese sites vary from net retention (input/output) tonet release (output/input). In the overall data set, including those sites with very high inputs of seasaltCl-, there was a strong correspondence betweeninputs and outputs. However, sites with low Cl- deposition (<6 kg ha-1 year-1) consistently showednet release of Cl-, suggesting an internal source or adeclining internal pool. The results indicate that Cl- may be a conservative ion in sites with high Cl- deposition, but in sites with low deposition Cl- may not be conservative. We discuss the possible causes of the Cl- imbalance and reasons why Cl- may not be conservative in ecosystem functions.

Note:
funding agencies|Swedish Foundation for International Cooperation in Research and Education (STINT)||US National Science Foundation|DEB-0342198DEB-0423259|Hubbard Brook LTER program||Andrew W. Mellon Foundation||
Available from:
2011-11-09
Created:
2011-11-09
Last updated:
2013-12-17
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