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Assessing ecologica...
Assessing ecological quality of shallow lakes: Does knowledge of transparency suffice?
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Peeters, E (author)
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Franken, Rob (author)
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Jeppesen, Erik (author)
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Moss, Brian (author)
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Becares, Eloy (author)
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- Hansson, Lars-Anders (author)
- Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science
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Romo, Susana (author)
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Kairesalo, Timo (author)
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Gross, Elisabeth (author)
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van Donk, Ellen (author)
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Noges, Tina (author)
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Irvine, Ken (author)
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Kornijow, R (author)
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Scheffer, Marten (author)
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- English.
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In: Basic and Applied Ecology. - : Elsevier BV. - 1618-0089 .- 1439-1791. ; 10, s. 89-96
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Abstract
Subject headings
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- The European Water Framework Directive (WFD) requires that all aquatic ecosystems in their member states should reach ‘good’ ecological quality by 2015. To assess ecological quality, the WFD requires the definition of reference conditions using biological, physical and chemical indicators and the assignment of each water body to one of five quality classes using these indicators. Elaborate assessment schemes using large sets of variables are now being developed. Here we address the question whether all this is really needed and what the simplest assessment approach would be for the case of shallow lakes. We explore the relationships between the quality class assigned to a lake by experts in shallow lake ecology and a rich set of biological, physical, and chemical data. Multinomial logistic regression analyses were carried out based on data from 86 shallow lakes throughout Europe that were sampled in 2000 and/or 2001. Ecological quality of shallow lakes judged by experts was strongly correlated to physical and chemical variables associated with light regime and nutrients and much less to biological variables. Our regression model showed that ecological quality of this set of shallow lakes judged by experts could be predicted quite well from water transparency expressed as Secchi depth and that other variables did not contribute to it significantly. According to the WFD, lakes should at least have a ‘good’ ecological quality. Quality judged by experts and predicted quality were similar for 78% of the lakes with respect to meeting this standard. As a cautionary note we stress that Secchi depth alone will be a less useful indicator if effects of stressors other than eutrophication (e.g. lake acidification and toxic pollution) are to be considered.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Restoration
- Prediction
- Multinomial logistic regression
- Modelling
- Lake management
- Expert judgement
- ECOFRAME
- Eutrophication
- Secchi depth
- Water framework directive
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Peeters, E
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Franken, Rob
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Jeppesen, Erik
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Moss, Brian
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Becares, Eloy
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Hansson, Lars-An ...
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show more...
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Romo, Susana
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Kairesalo, Timo
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Gross, Elisabeth
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van Donk, Ellen
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Noges, Tina
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Irvine, Ken
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Kornijow, R
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Scheffer, Marten
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
- Articles in the publication
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Basic and Applie ...
- By the university
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Lund University