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Comparing trends in lake acidification using hydrochemical modelling and paleolimnology: The case of the Herrenwieser See, Black Forest, Germany

Hinderer, M. and Jüttner, I. and Winkler, R. and Steinberg, C. E. W. and Kettrup, A. (1998):
Comparing trends in lake acidification using hydrochemical modelling and paleolimnology: The case of the Herrenwieser See, Black Forest, Germany.
In: The Science of the Total Environment, Elsevier, pp. 113-121, 218, (2-3), [Online-Edition: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V...],
[Article]

Abstract

We reconstruct the post-industrial acidification of a dystrophic headwater lake in the Black Forest by (1) modelling past chemical change using MAGIC and (2) assessing past pH using diatoms from a sediment core. Both methods were consistent in indicating only a small pH decline between the mid 19th century and the 1980s, followed by a minor recovery around 10 years after peak sulphate deposition. However, the magnitude and timing of pH change varied between the different diatom algorithms (weighted averaging vs. multiple regression, maximum change 0.21 and 0.78 pH units, respectively), and between the most extreme diatom scenario and MAGIC (0.15 pH units). We advocate further validation exercises of this type to assess whether consistency is maintained or differences emphasised, where pH change has been larger.

Item Type: Article
Erschienen: 1998
Creators: Hinderer, M. and Jüttner, I. and Winkler, R. and Steinberg, C. E. W. and Kettrup, A.
Title: Comparing trends in lake acidification using hydrochemical modelling and paleolimnology: The case of the Herrenwieser See, Black Forest, Germany
Language: English
Abstract:

We reconstruct the post-industrial acidification of a dystrophic headwater lake in the Black Forest by (1) modelling past chemical change using MAGIC and (2) assessing past pH using diatoms from a sediment core. Both methods were consistent in indicating only a small pH decline between the mid 19th century and the 1980s, followed by a minor recovery around 10 years after peak sulphate deposition. However, the magnitude and timing of pH change varied between the different diatom algorithms (weighted averaging vs. multiple regression, maximum change 0.21 and 0.78 pH units, respectively), and between the most extreme diatom scenario and MAGIC (0.15 pH units). We advocate further validation exercises of this type to assess whether consistency is maintained or differences emphasised, where pH change has been larger.

Journal or Publication Title: The Science of the Total Environment
Volume: 218
Number: 2-3
Publisher: Elsevier
Uncontrolled Keywords: Black Forest region; pH; Diatoms; Lake acidification
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Applied Sedimentary Geology
Date Deposited: 18 Feb 2010 13:09
Official URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V...
Identification Number: doi:10.1016/S0048-9697(98)00187-9
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