Monitoring of cyanobacteria for water quality: doing the necessary right or wrong?

Moustaka-Gouni, M., Sommer, Ulrich, Katsiapi, M. and Vardaka, E. (2019) Monitoring of cyanobacteria for water quality: doing the necessary right or wrong? Marine and Freshwater Research . DOI 10.1071/MF18381.

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Abstract

Cyanobacteria are an essential biological component of phytoplankton water quality assessment. However, there are some problems associated with the widely used everyday practices of sampling, estimation and use of cyanobacteria when calculating phytoplankton indices assessing water quality. Many indices were developed during the implementation of the Water Framework Directive, considered the most innovative European environmental legislation. Most indices include cyanobacteria as a composition or bloom metric. Problems with the indices concern the exclusion of most chroococcalean taxa from cyanobacterial biovolume estimations in lakes and reservoirs of the Mediterranean region, treatment of the mucilage of colonial chroococcalean taxa in biovolume estimations and overlooking of deep-water cyanobacterial blooms due to sampling depth. These problems may lead to a biased view of water quality. In this paper we argue in favour of including all cyanobacteria taxa and their mucilage in biovolume estimations and considering a sampling depth that covers deep-water maxima, such as those formed by Planktothrix rubescens or colonial chroococcalean taxa.

Document Type: Article
Keywords: Cyanodictyon imperfectum, euphotic zone, Greece, Merismopedia tenuissima, Secchi depth, Water Framework Directive, WFD
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
Refereed: Yes
DOI etc.: 10.1071/MF18381
ISSN: 1323-1650
Date Deposited: 06 Jan 2020 13:56
Last Modified: 06 Jan 2020 13:56
URI: http://eprints.uni-kiel.de/id/eprint/48602

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