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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Basic Information on the Baltic Sea
verfasst von : Lars Håkanson, Andreas C. Bryhn
Erschienen in: Eutrophication in the Baltic Sea
Verlag: Springer Berlin Heidelberg
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Empirical data ultimately form the basis for most environmental studies. As Goethe once eloquently put it: “Grey, dear friend, is all theory, and green the golden tree of life”. The focus of this chapter is on empirical data and empirical models. Extensive databases on the conditions in the Baltic Sea and other aquatic systems have been “data-mined” and in this chapter we will present results showing variations of target variables related to the eutrophication in the Baltic Sea (nutrient concentrations, chlorophyll-a concentrations and Secchi depths) and trend analyses to see if therehave been any changes in these variables in the Baltic Sea.