Assessment Method For The Ecological Status Of
Estonian Coastal Waters Based On
Submerged Aquatic Vegetation
Author(s)
K. Torn & G. Martin
Abstract
In this paper water quality assessment system of Estonian coastal sea areas using
submerged aquatic vegetation according to the Water Framework Directive of
the European Community is described. Estonian coastal waters are divided to 6
national types covering 16 water bodies. The assessment system is based on
three monitoring areas for each water body. Three metrics are used for water
quality classification system based on phytobenthos: 1) the depth distribution of
phytobenthos as the deepest occurrence of a single attached specimen; 2) the
maximum depth distribution of Fucus vesiculosus as the deepest occurrence of
singe plant specimens; 3) the proportion of perennial plant species in the
observed community based on dry biomass of attached erect vegetation.
Keywords: classification, coastal water, phytobenthos, water framework
directive, ecological quality.
1 Introduction
In connection with the implementation of the EU Water Framework Directive
(WFD) in the area of assessment of the ecological status of water bodies, the
classification system should be developed. Classification systems should be
based on different biological water quality elements indicating the status of water
bodies. According to the WFD, three biological quality elements (phytoplankton,
benthic invertebrate fauna and aquatic flora) should be used for coastal
waters [1].
The principle of the whole assessment procedure is to measure deviation from
reference condition. According to the normative definition of the WFD,
reference conditions represent a status with no or only minor anthropogenic
Keywords
classification, coastal water, phytobenthos, water framework
directive, ecological quality.
Related Book
Other papers in this volume
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