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Assessing ecological quality of shallow lakes: Does knowledge of transparency suffice?

Peeters, E; Franken, Rob; Jeppesen, Erik; Moss, Brian; Becares, Eloy; Hansson, Lars-Anders LU ; Romo, Susana; Kairesalo, Timo; Gross, Elisabeth and van Donk, Ellen, et al. (2009) In Basic and Applied Ecology 10. p.89-96
Abstract
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

... (More)
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. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Restoration, Prediction, Multinomial logistic regression, Modelling, Lake management, Expert judgement, ECOFRAME, Eutrophication, Secchi depth, Water framework directive
in
Basic and Applied Ecology
volume
10
pages
89 - 96
publisher
Elsevier
external identifiers
  • wos:000262796800011
  • scopus:57749201590
ISSN
1618-0089
DOI
10.1016/j.baae.2007.12.009
language
English
LU publication?
yes
id
44bff14c-38b8-4659-b07f-7632f484f049 (old id 1241453)
alternative location
http://kops.ub.uni-konstanz.de/volltexte/2009/7489/pdf/2009_Edwin_Peeters_etal_Assessing_ecological_quality.pdf
date added to LUP
2008-10-22 14:23:47
date last changed
2017-04-23 03:25:35
@article{44bff14c-38b8-4659-b07f-7632f484f049,
  abstract     = {The European Water Framework Directive (WFD) requires that all aquatic ecosystems in their member states<br/><br>
should reach ‘good’ ecological quality by 2015. To assess ecological quality, the WFD requires the definition of<br/><br>
reference conditions using biological, physical and chemical indicators and the assignment of each water body to one<br/><br>
of five quality classes using these indicators. Elaborate assessment schemes using large sets of variables are now being<br/><br>
developed. Here we address the question whether all this is really needed and what the simplest assessment approach<br/><br>
would be for the case of shallow lakes. We explore the relationships between the quality class assigned to a lake by<br/><br>
experts in shallow lake ecology and a rich set of biological, physical, and chemical data. Multinomial logistic regression<br/><br>
analyses were carried out based on data from 86 shallow lakes throughout Europe that were sampled in 2000 and/or<br/><br>
2001. Ecological quality of shallow lakes judged by experts was strongly correlated to physical and chemical variables<br/><br>
associated with light regime and nutrients and much less to biological variables.<br/><br>
Our regression model showed that ecological quality of this set of shallow lakes judged by experts could be predicted<br/><br>
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<br/><br>
and predicted quality were similar for 78% of the lakes with respect to meeting this standard. As a cautionary note we<br/><br>
stress that Secchi depth alone will be a less useful indicator if effects of stressors other than eutrophication (e.g. lake<br/><br>
acidification and toxic pollution) are to be considered.},
  author       = {Peeters, E and Franken, Rob and Jeppesen, Erik and Moss, Brian and Becares, Eloy and Hansson, Lars-Anders and Romo, Susana and Kairesalo, Timo and Gross, Elisabeth and van Donk, Ellen and Noges, Tina and Irvine, Ken and Kornijow, R and Scheffer, Marten},
  issn         = {1618-0089},
  keyword      = {Restoration,Prediction,Multinomial logistic regression,Modelling,Lake management,Expert judgement,ECOFRAME,Eutrophication,Secchi depth,Water framework directive},
  language     = {eng},
  pages        = {89--96},
  publisher    = {Elsevier},
  series       = {Basic and Applied Ecology},
  title        = {Assessing ecological quality of shallow lakes: Does knowledge of transparency suffice?},
  url          = {http://dx.doi.org/10.1016/j.baae.2007.12.009},
  volume       = {10},
  year         = {2009},
}