Defining reference conditions for coastal areas in the Baltic Sea
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Defining reference conditions for coastal areas in the Baltic Sea

The overall aim of DEFINE is to provide a methodology to define reference conditions for nutrient concentrations in the coastal zone of the Baltic Sea. This will aid the national authorities that surround the Baltic basin in implementing the EU's Water Framework Directive (WFD) by providing decision-makers with a methodology to assess reference conditions and the degree of past and present departure from this state, such that appropriate policy and management measures can be taken at national and European levels. DEFINE adopts a palaeoecological approach grounded on diatom-based transfer functions, which can then be applied to define background total nitrogen (TN) concentrations in estuaries and coastal areas over the entire Baltic Sea. All transfer functions and necessary supporting documentation will be publicly available as a coherent management tool and accessible via the MOLTEN/DEFINE web page (http://craticula.ncl.ac.uk/Molten/jsp/).

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Diatoms in surface sediments You do not have access to this content

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Author(s):
Nordic Council of Ministers

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Here we report on surface sediment diatom assemblages in the Baltic Sea area. Methods for sample collection, preparation and identification are provided. Details are also provided of the taxonomic harmonisation work that was performed to allow the Baltic-wide transfer functions to be constructed. We do not report in detail on the diatom species found in these samples as this information is considerably large and is available on the project website; http://craticula.ncl.ac.uk/Molten/jsp .