1991
Sampling area
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  The only high mountains national park in Germany and an area of the Limestone Alps with international relevance
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  Important, old-industrialised conurbation in Germany.
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  Main water divide between the North- and Baltic Sea
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  National Park in the largest brackish water (Bodden) habitat of the world.
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  National park in the world largest connected sand and mud flats.
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  Region in the chemical triangle of Central Germany
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  Germany's largest forest national park
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  4 university cities as sampling areas.
Specimen
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  Common brown alga of the coastal areas of the North and Baltic Sea
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  Inshore, the herring gull mainly feeds from the sea: upon fish, mussels, and crabs.
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  A major primary producer in semi-natural and anthropogenic affected ecosystems.
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  A major primary producer in semi-natural and anthropogenic affected ecosystems.
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  A deciduous tree typical of ecosystems close to dense conurbations and an indicator for the characterisation of the immission situation during the vegetation period.
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  As the most dominant deciduous tree species in Central Europe, it plays a significant role in most nearly natural and also anthropogenically influenced forest ecosystems up to an altitude of 1100 m.
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  The roe deer is the most common of the larger herbivores (first order-consumer) to be found in the wild in Europe.
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  Student groups with an even number of female and male students at the age of 20 to 29.
Analytes
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  Eighty percent of all elements on earth are metals
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  Only eighteen elements in the periodic table
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  Group of organic compounds with at least one covalently bonded chlorine atom
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  Toxic and persistent organochloropesticide
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  Several isomeric compounds among the group of chlorinated hydrocarbons
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  Group of organic compounds with at least three condensed six-membered rings
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  General-purpose plasticizers for PVC and other polymers
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  Organic compounds which are fully (per-) or partially (poly-) fluorinated
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  Class of non-ionic surfactants and their degradation products
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  Atoms of one element with different weights
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  Flame retardants reduce the flammability of objects
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  Additional information for the interpretation of contamination data