In the 1990¿s the idea of farming blue mussels in order to reduce the amount of phytoplankton and thereby the negative effects of the eutrophication was introduced. This was a new concept by regarding the increasing nutrient- and plankton amounts in coastal waters as a resource which should be recycled to land and reused.
Any activity which releases nutrients to the environment should also be responsible for that the emission is taken care of. If it is complicated or too expensive for the emitter of nutrients to purify the effluent at the source, emission or discharge quotas can be traded. This idea, which is a parallel to the global trading that is currently being used for carbon dioxide effluents into the atmosphere, can be used on a local or regional scale. The basic concept is to regard mussel farming as a compensating measure against nutrient discharges causing eutrophication and the mussel farmer get paid for farming and harvesting a certain amount of mussels.
When mussel harvests are sorted and treated a considerable amount, mainly made up of small and crushed mussels cannot be used as seafood. The research on how to utilize this remainder resource are under development in order to verify the value both as a feed additive for laying hens and chicken production and as fertilizer on farmland. In both cases the interest is directed towards the organic farming industry.
Agro – Aqua recycling of nutrients using mussel farming as a recycling engine.
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