SUSTAINABLE AQUACULTURE

02 December 2020, 1 pm

Aquaculture is the fastest growing sector of food production in the world. In the past five years, the production of farmed seafood for human consumption has exceeded the total catch of fisheries and the upward trend shows no signs of slowing down. With this enormous growth in production capacity, ecological and socio-economical issues kept emerging, severely impairing the public image of the industry. In our session, we aim to shed light on the pending questions regarding sustainability in aquaculture. How do we minimize the environmental impact of farming systems? What are the waste products of fish farming and how can we further utilize them? How do we measure and improve fish welfare? And what concepts and technologies will enable us to make farming systems more sustainable and productive at the same time?

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Speakers and Abstracts (to be added soon)

Promoting Sustainable Aquaculture in the Context of International Development Cooperation – Insights from Myanmar

Nuri Max Steinmann1*

1Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), Bonn, Germany

*corresponding author: ed.zi1606109758g@nna1606109758mniet1606109758s.iru1606109758n1606109758

Keywords: South-East Asia; Rural Development; GIZ; Food Security; Livelihoods

The Myanmar Sustainable Aquaculture Programme (MYSAP) works to intensify aquaculture in a sustainable way. MYSAP is funded by the European Union and the German Federal Ministry of Economic Cooperation and Development (BMZ) and is jointly implemented by the Myanmar Department of Fisheries and Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH. The programme works with all members of selected aquaculture value chains, including governmental and non-governmental organizations, the private sector, academia and other stakeholders in efforts to improve the livelihoods of medium and small-scale farmers and other actors along the value chain, as well as food security and nutrition in the country. The presentation aims to give an overview into development cooperation work in the context of sustainable aquaculture, but also to provide insights into the challenges and opportunities of working in development cooperation in the field.

Dr. Cornelia Kreiß (Thünen Institute for Sea Fisheries)

Cornelia is a member of the research unit for fisheries and aquaculture economics at the Thuenen-Institute for Sea Fisheries. Her work focuses on the possible consequences of climate change for European aquaculture and on possible ways to intensify European aquaculture and make better use of its resources, both in a sustainable way. Her presentation in the online forum will focus on the usage of aquaculture side-streams and by-products as valuable resources.

Watertuun – Building up the first aquaponic farm in Bremen

Enno Fricke1*

1Watertuun, Bremen Germany

*corresponding author: ed.iw1606109758a@ekc1606109758irf.o1606109758nne1606109758

Keywords: Aquaponics; Start-up; Environmental education; Economic aspects

The young start-up “Watertuun” launched in 2018 by winning a local crowd funding campaign in Bremen. The name Watertuun is “Plattdeutsch” and translates into water garden, which refers to growing fish and plants together in one system: aquaponics. The general idea is to produce fish and edible plants directly in the city and also create a platform for environmental education, innovative ideas and exchange. Aquaponics is considered to be a very sustainable and environmentally friendly form of aquaculture. Water is efficiently used, nutrients are recycled and wastewater is minimized. Aquaponic systems can nicely demonstrate natural nutrient flows and can thus create awareness for general issues in current food production, climate change and global resource limitations. The story of how Watertuun has developed from a simple idea into a water garden with a small recirculating aquaculture system and a 115 square meter glass greenhouse will be presented.

 

Recirculating Aquaculture System (RAS)- the future of sustainable aquaculture, but with challenge of its own

Deni Ribičić1*, Roman Netzer1, Stine Wiborg Dahle1

1SINTEF Ocean AS, Trondheim, Norway

*corresponding author: on.fe1606109758tnis@1606109758cicib1606109758ir.in1606109758ed1606109758

Keywords: RAS; Aquaculture; Water quality; Microbial communities; Machine learning and BigData

Recirculating aquaculture systems (RASs) are closed land-based facilities for intensive fish farming, designed to minimize environmental impact and increase control of production-relevant factors such as biological and chemical water quality, fish pathogens, feeding regimes and fish health. However, modern RASs are highly complex aquatic environments and up to date, a lack of reliable data on individual parameters, interactions and impact on productivity and fish welfare, still prevents the technology from exploiting its full potential for sustainable aquaculture operations. In a recently finished MonMic project we have focused on monitoring microbial community dynamics in five different salmon RAS facilities in Norway, by using cutting-edge molecular tools. Microbial communities in RAS are the key factor to biological and chemical water quality, as their functions and interactions are the main drivers of it. At present, strategies used for detection of microorganisms in RAS are mainly still limited to the classical low-coverage or semi-quantitative methods, and this reveals an immense knowledge gap on microbiota compositions and dynamics in such complex systems. In another upcoming ERA-NET BlueBio project, DIGIRAS, our goal is to extend the scope of what we have done in MonMic, and to develop innovative and data-driven solutions for digitalization of future RAS technology in order to increase environmental compatibility, fish health and productivity. The project intends to reach this goal by systematic acquisition of relevant water quality data, parameterization of fish behaviour, developing new biological and chemical sensors and efficient water treatment technology. In addition to Atlantic salmon in Norway, several RASs across Europe cultivating other species that are of market interest will be evaluated (seabream, seabass, arctic charr and yellowtail kingfish). Here, we strive to integrate all generated data towards decision support and predictive tools for next generation digital RAS operation.

Jessica Petereit (AWI)
Coming from a strong background in marine zoology and ecology with a special interest in elasmobranchs, Jessica is now working on her PhD about sustainable aquaculture and stress physiology of aquaculture fish. She is investigating the effects of alternative feed ingredients for aquaculture fish and how the feed can be adapted to be more sustainable (less fish meal, use of by-products, insects or plant material). She will talk about the possible stressors for fish in aquaculture, what their effects are, how they can be detected and possible ways to reduce stress in order to improve fish welfare.

Videos (will be added afterwards)