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Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
Evaluating effects of multiple exposure by means of palaeolimnological techniques.
Chemosphere 27, 2271-2285 (1993)
The acidification chronology of Gr. Arbersee (Bavarian Forest, Germany) was studied by means of subrecent diatom, and chrysophyte as well as metal (Al, Cu, Cd, Mg, Ca) stratigraphies. pH was inferred by diatom assemblages so that the simultaneous effects of acid and accompanying metals on chrysophytes could be evaluated. The occurrence of seven dominant Mallomonadacean taxa was related to the environmental variables by applying Spearman rank correlation and factor analysis. During the post-glacial period of natural acidification, increases in organic carbon and declining pH favor Mallomonas crassisquama and disfavor M. heterospina and M. caudata. Potentially toxic metals (Al, Cu, Cd) and the two alkaline earth metals (Ca, Mg) impact the occurrence as well. Although acidity appears to be also the major driving force during the recent acidification period, the occurring Mallomonadacean species may be differentiated by their tolerance toward Al and heavy metals.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
multiple exposure; effect evaluation; palaeolimnology; factor analysis; acidification; diatom-inferred pH; toxic metals; base cations; pollutant tolerance; scaled Chrysophytes; Mallomonas canina; M. caudata; M. crassisquama; M. heterospina; M. torquata; Synura echinulata; S. sphagnicola
ISSN (print) / ISBN
0045-6535
e-ISSN
1879-1298
Journal
Chemosphere
Quellenangaben
Volume: 27,
Issue: 11,
Pages: 2271-2285
Publisher
Elsevier
Publishing Place
Kidlington, Oxford
Reviewing status
Peer reviewed
Institute(s)
Institute of Ecological Chemistry (IOEC)