Time References

A chronicle of the sampling years.

1981
1982
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002 Soil is a new specimen in the routine programme, the soil sampling takes place all 4 years. 
2003 The river Danube (Donau) as a new sampling area in the routine programme.
2004
2005 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.
2006
2007
2008
2009 In June 2009 a fire on the bird island Mellum about destroyed 1,000 nests with eggs and young birds.