The ALGADEPUR project has developed a way for small and medium-sized aquaculture businesses to grow seaweed as a new commercial product while reducing the environmental impact of fish farm effluent.
Small fish farms that include other value-added species can become more competitive by diversifying their products and creating new jobs, as well as improving environmental sustainability. Led by MAREFOZ Laboratory, this project aimed to identify the most suitable macro-algae – seaweeds – for the system known as integrated multi-trophic aquaculture (IMTA), optimise production systems and improve the quality of effluent water from inland fish farms.
The researchers worked with a semi-intensive fish farm to test the potential for IMTA of four local seaweed species. They also carried out laboratory tests to optimise the process of growing the seaweeds and their capacity to improve water quality.
- Project locations
- Portugal
- Overall budget
- €208 836
- EU contribution
- €177 51185% of the overall budget
- Project website
- ALGADEPUR
Results
The project developed a pilot system that effectively reduces the inorganic nutrient load that the fish farm releases into the estuary. Year-round operation requires more than one type of seaweed to be grown. Two scientific papers were produced.
The test site has continued to produce seaweed alongside fish, and three other aquaculture producers are trialling the system, including with shellfish.
Potential uses for the seaweed have been identified, including as a fertiliser for local agriculture.
Contact
A. Cristina S. Rocha
- Name
- A. Cristina S. Rocha
- Organisation
- Laboratório MAREFOZ (MARE – University of Coimbra)
- marefoz [dot] laboratorio
uc [dot] pt - Phone number
- +351 968 768 949 l
Mondego Mar FLAG
- Name
- Mondego Mar FLAG
- geraladelo [dot] pt
- Phone number
- +351 231 419 550