Integrierte Aquakultur: Seegrasfragmente auf einen Seegurkenkäfig in Muungoni, Sansibar | Foto: Andreas Kunzmann

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Aquacul­ture is seen as a vi­tal part of feed­ing a grow­ing world pop­u­la­tion without de­plet­ing the ocean's re­sources. In or­der for it to con­trib­ute to food se­cur­ity without ad­verse en­vir­on­mental ef­fects, is­sues of wa­ter pol­lu­tion and eco­sys­tem de­grad­a­tion need to be ad­dressed. In­teg­rated mul­ti­trophic aquacul­ture (IMTA) com­bines or­gan­isms of dif­fer­ent trophic levels into one sys­tem, in­creas­ing its ef­fi­ciency and de­creas­ing or elim­in­at­ing waste pro­duc­tion by us­ing the ef­flu­ents of one spe­cies as a re­source for the cul­tiv­a­tion of sub­sequent or­gan­isms. The goal of this pro­ject is to ap­ply an IMTA ap­proach to the de­vel­op­ment of a mod­ule-biofil­ter for the re­medi­ation of fish cul­tiv­a­tion ef­flu­ents that is both eco­lo­gic­ally ef­fi­cient and eco­nom­ic­ally vi­able. Dif­fer­ent aquacul­ture spe­cies will be in­vest­ig­ated for their nu­tri­ent up­take ca­pa­cit­ies. De­t­ri­vores such as sea cu­cum­bers and bivalves will be com­bined with plants such as halo­phytes and mac­roal­gae to ab­sorb par­tic­u­late mat­ter and dis­solved nu­tri­ents. The pro­ject will ap­ply a com­bin­a­tion of labor­at­ory ex­per­i­ments with field stud­ies and stable iso­tope ana­lysis to de­term­ine biore­medi­ation ef­fi­cien­cies.

 

Projektpartner (Deutschland)

 

Internationale Projekpartner

ZMT – Leibniz-Zentrum für Marine Tropenforschung Bremen   IMS – Institute for Marine Sciences, Zanzibar, SUZA State University of Zanzibar, Zanzibar, private sector