Rapport nr 115: Testning av parametrar (klorofyll-a och djuputbredning av blåstång, Fucus vesiculosus) för beskrivning av biologiska kvalitetsfaktorer enligt EU:s ramdirektiv för vatten
MÄENSIVU, M (2006)
MÄENSIVU, M
Åbo Akademi, Husö biologiska station
2006
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This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
Julkaisun pysyvä osoite on
https://urn.fi/URN:ISBN:952-12-1831-2
https://urn.fi/URN:ISBN:952-12-1831-2
Tiivistelmä
In association ta the EU Water Framework Directive (WFO) all coastal areas in member countries are characterized and classified. This cancerns also the Aland Islands. The WFD gives a possibility to describe the Biological Quality Elements with some biological parameters. Two biological parameters (chlorophy/1-2 and depth distribution of bladder wrack, Fucus vesiculosus) were tested ta meet the acquirements of the WFD. The different water quality monitoring programs and historical vegetation studies done on the archipelago af Aland Islands were combined to a database for establishing reference conditions and ecological status class boundaries for mean chlorophyll-2 concentrations during the growth season and for depth distribution of bladder wrack and some red algae.
50 localities in previously less studied areas in the Aland archipelago were visited, and maximum depth distribution of vegetation was studied.
The biological parameters tested in this study are suitable for describing the ecological status of coastal waters in the Aland archipelago. However, there are still areas that are not involved in any monitoring programs and especially shallow soff bottoms in the inner archipelago must be further studied ta complete the classification in the test area. The parameters give different classifications, and commensurations and intercalibration with surrounding areas must be done.
50 localities in previously less studied areas in the Aland archipelago were visited, and maximum depth distribution of vegetation was studied.
The biological parameters tested in this study are suitable for describing the ecological status of coastal waters in the Aland archipelago. However, there are still areas that are not involved in any monitoring programs and especially shallow soff bottoms in the inner archipelago must be further studied ta complete the classification in the test area. The parameters give different classifications, and commensurations and intercalibration with surrounding areas must be done.