11.6 Economic Calculations
For the last 25 years, total mussel production in the German North Sea varied from
5000 to 50,000 annual tons. As these mussels were produced by using the on
bottom-culture technique, the farmer depends on the bioavailability of seed mussels
obtained from wild beds in the coastal sea. Walter and Liebezeit (2001, 2003)
commenced research into whether or not suspended culture techniques could be
used to obtain seed mussels in a nearshore areas of the German Bight. They found
that spat can be obtained even in years with a low spat fall when using the floating
Fig. 11.43 Framework requirements for managing ‘wind farm–mariculture integration’ (modified
after Michler-Cieluch and Krause 2008)
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B.H. Buck et al.
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