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Resuspension in lakes and its ecological impact - a review
1998 (English)In: Arch. Hydrobiol. Spec. Issues Advanc. Limnol., 185-200 p.Article in journal (Refereed) Published
Abstract [en]

To determine geochemical, toxicological and biological impacts of sediment resuspension on lake ecosystems, this review tackles the questions where, why, when, how much, how often and what kind of sediment is resuspended and how resuspended material is distributed in the water column. Due to internal seiche activities sediment resuspension may occur in very deep areas. In the moderately deep Lake Erken in south-eastern Sweden (mean depth: 9 m, maximum depth: 21 m) internal seiche activities are, for example, one of the explanations why, as an annual average, 85 % of the total serving material in the water column was determined to be resuspended sediment. The annual averages of resuspended sediment in 16 other shallow and deep lakes spread throughout the world were 15 - 92 %. Also large amounts of organic sediment are resuspended (annual averages: 25 - 84 % of total organic settling material was resuspended organic sediment in 9 lakes). These large amounts of resuspended sediment, especially of organic resuspended sediment, have such an important influence on lake ecosystems that the nux of newly produced planktonic particulate matter was observed to be significantly related to the flux of resuspended sediment. It is suggested that the flux of resuspended sediment is not only related to planktonic production and thereby eutrophication but also to the degree of water pollution by contaminants.

Place, publisher, year, edition, pages
1998. 185-200 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-170497ISI: 000078414300014ISBN: 3-510-47053-2 (print)OAI: oai:DiVA.org:uu-170497DiVA: diva2:509182
Conference
Seminar on Lake Erken - 50 Years of Limnological Research OCT , 1996 UPPSALA, SWEDEN
Available from: 2012-03-12 Created: 2012-03-12 Last updated: 2012-03-13

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Weyhenmeyer, G A

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