<abstract xmlns="http://www.w3.org/1999/xhtml">

Establishing reference conditions is essential for performing ecological status assessments of surface waters according to the EU Water Framework Directive. Ecological status is described as the deviation from undisturbed (reference) conditions. This paper presents the process of establishing preliminary reference values for chlorophyll <italic>a</italic>, total phosphorus, and Secchi disc readings in different types of Polish lakes. This was done by selecting potential reference lakes and performing statistical analysis of the values of the main eutrophication parameters. The preliminary reference values for total phosphorus, chlorophyll, and Secchi disc depth were defined as 0.033 mgP dm-3, 3.75 μg dm-3, and 3.6 m for stratified lakes, and 0.048 mgP dm-3, 5.80 μg dm-3, and 2.5 m. for polymictic lakes, respectively.
</abstract>

Establishing reference conditions is essential for performing ecological status assessments of surface waters according to the EU Water Framework Directive. Ecological status is described as the deviation from undisturbed (reference) conditions. This paper presents the process of establishing preliminary reference values for chlorophyll a, total phosphorus, and Secchi disc readings in different types of Polish lakes. This was done by selecting potential reference lakes and performing statistical analysis of the values of the main eutrophication parameters. The preliminary reference values for total phosphorus, chlorophyll, and Secchi disc depth were defined as 0.033 mgP dm-3, 3.75 μg dm-3, and 3.6 m for stratified lakes, and 0.048 mgP dm-3, 5.80 μg dm-3, and 2.5 m. for polymictic lakes, respectively.

Establishing reference conditions for Polish lakes - preliminary results

Oceanological and Hydrobiological Studies

{"article-title":"Establishing reference conditions for Polish lakes - preliminary results"}

Establishing reference conditions is essential for performing ecological status assessments of surface waters according to the EU Water Framework Directive....

Establishing reference conditions for Polish lakes - preliminary results

Published Online: Oct 08, 2008

Page range: 105 - 110

DOI: https://doi.org/10.2478/v10009-008-0010-4

Keywords
reference conditions, Water Framework Directive, eutrophication parameters, lake assessment and classification

This content is open access.

Establishing reference conditions for Polish lakes - preliminary results

Published Online: Oct 08, 2008

Page range: 105 - 110

DOI: https://doi.org/10.2478/v10009-008-0010-4

Keywordsreference conditions, Water Framework Directive, eutrophication parameters, lake assessment and classification

This content is open access.

Keywords
reference conditions, Water Framework Directive, eutrophication parameters, lake assessment and classification