Time References
A chronicle of the sampling years.
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Soil is a new specimen in the routine programme, the soil sampling takes place all 4 years.
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The river Danube (Donau) as a new sampling area in the routine programme.
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After successful preliminary investigations, the specimen suspended particulate matter is included in the routine operation at the same 13 limnetic sampling sites, where already bream and zebra mussels are collected.
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In June 2009 a fire on the bird island Mellum about destroyed 1,000 nests with eggs and young birds.