Publication Details

Reference Category Conference contributions
DOI / URL link
Title (Primary) On the relevance of meromixis in mine pit lakes
Title (Secondary) 7th International Conference on acid rock drainage, St. Louis, 26.-30.3.2006
Author Boehrer, B.; Schultze, M.;
Publisher Barnhisel, R.I.;
Year 2006
Department SEEFO;
Language englisch;
Abstract Worldwide the number of mine pit lakes is growing. Due to their steep slopes, their relatively great depth and their exposure to highly mineralized inflows, a remarkable portion of these lakes tend to be meromictic. Meromixis indicates that the deepest part of the water body - the monimolimnion - is excluded from seasonal overturn and thus from contact to the atmosphere. Although this phenomenon is not common in natural lakes, it is well known. Meromixis is accompanied by some important consequences with respect to water quality: (1) strong anoxia in the monimolimnion, (2) enrichment of products of microbial decay in the monimolimnion and (3) occurrence of hydrogen sulfide and precipitation of metal sulfides in the monimolimnion. In some cases, advantage can be taken from the enrichment of substances in the monimolimnion due to the very low exchange with the rest of the lake. As a consequence, hazards may be avoided. On the contrary, if a sudden total overturn happens, e.g. induced by a heavy storm, fish kills and other catastrophic events may be the consequence.
ID 2517
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=2517
Boehrer, B., Schultze, M. (2006):
On the relevance of meromixis in mine pit lakes
In: Barnhisel, R.I. (ed.)
7th International Conference on acid rock drainage, St. Louis, 26.-30.3.2006
American Society of Mining and Reclamation (ASMR), Lexington, p. 200 - 213