An Arctic IMTA (Integrated MultiTrophic Aquaculture)

Theme 4. Education
Session Name 4.7 Fisheries and aquaculture in the Arctic: Opportunities for research and education
Datetime Sep 06, 2018 10:15 AM - 10:30 AM (UTC +3)
Presentation Type Oral
Author(s) Peter Krost (University Center of the Westfjords, Isafjördur, Iceland), Dror Angel (Recanati institute, University of Haife, Israel)
Abstract text

There is growing interest in development of Arctic regions, related, among others, to climate change and melting ice caps which make these regions increasingly accessible. As populations in these regions grow there is a growing need for food and employment. Norway has developed a strong salmon industry and we can see similar trends in the Faroe Islands and Iceland, but it is not clear how intensive large-scale fish production will affect environmental and societal interests there.

We propose an integrated multi-trophic aquaculture (IMTA) approach to reduce potential conflicts, enhance environmental responsibility, increase employment and aquaculture productivity while maintaining and increasing revenues in the arctic regions. The ecological advantage of this concept is to minimize fish farm effluents by cultivating (and marketing) extractive components (crops) which take up the nutrients released from the farmed fish (uneaten feed, excretion, faeces). The proposed species combination suitable for Nordic conditions is Arctic charr, Savellinus alpinus (fish), Iceland scallop, Chlamys islandica (bivalve) and Wingkelp, Alaria esculenta (seaweed).

An experimental system to test such an IMTA system could be established in the Westfjords of Iceland. There is considerable support for this idea from the regional Westfjords council, the University Center of the Westfjords (Isafjördur) can provide scientific support.

The application of IMTA in the arctic as well as the proposed species and their combination is novel. We will start with scallops and wingkelp. Essential elements in the sustainability of this initiative include product marketing, maintaining high water quality and the ecological value of the IMTA approach.

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