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About the Website

The contents of this website was originally written and published as an assessment report: Nutrients and Eutrophication in Danish Marine Waters. A Challenge for Science and Management.

The report has been modified to fit the web-media but the text and figures in this 1. version are, apart from minor corrections, identical to the book.

Objective
The objective of the original assessment report was to describe and document the effects and degree of nutrient enrichment and eutrophication status in all Danish marine waters by addressing the following questions:

  • What is nutrient enrichment and eutrophication?
  • What are the causes and actual effects?

  • Temporal trends: what is natural variation and what is due to human activities?

  • What has been done so far in Denmark to reduce eutrophication in Danish marine waters?

  • How can the findings be used and transformed into an informed management strategy?

The assessment was written in order to fulfil the Danish obligations in relation to the OSPAR Common Procedure. However, the assessment covers not only the OSPAR areas: the North Sea, Skagerrak and Kattegat, but all Danish marine waters, including the transitional waters (the Sound and Belt Sea) between the Kattegat and the Baltic Sea, as well as the western parts of the Baltic Sea. This is because:

  1. the outflow from the Baltic Sea has a large influence on the Kattegat – Belt Sea ecosystems, and
  2. the eutrophic state and development of the Kattegat and Belt Sea runs in parallel and is interrelated.


The assessment focuses on factors and parameters that cause, control or respond to eutrophication. Special attention is put on ecological status and temporal trends. Seasonal variations and more system-orientated descriptions of the fluxes and turnover of nutrients have been mitigated. The assessment is not a comprehensive assessment of the health of the marine environment in Denmark or a textbook in marine ecology. The assessment is more or less an extended summary of more than 13 years of monitoring and subsequent production of different assessments reports on the state of the marine environment within the framework of the Danish National Monitoring and Assessment Programme (1988-2003).

What's different in the web version?

Figures
Most of the figures are presented as clickable thumbnail-versions which links to a larger figure. The figure-pages can also be accessed by links i the figure text and many of the figure-pages can be accessed directly by hyperlinks in the text.

Data
Many of the background data for the figures has been made available and can be downloaded from the figure-pages.

Glossary
Selected words from the glossary are hyperlinked form the text.

Copyright
Reproduction and use of figures and data is permitted provided the source is explicitly acknowledged. In question of doubt please contact the editors.

Citation
Please cite as:
Ærtebjerg, G., Andersen, J.H. & Schou Hansen, O. (eds.) 2003: Nutrients and Eutrophication in Danish Marine Waters. A Challenge for Science and Management. National Environmental Research Institute.
Internet: http://www.dmu.dk/1_Viden/2_Miljoe-tilstand/3_vand/4_eutrophication/default.htm

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