Journal article · Conference paper
Commercial cultivation and bioremediation potential of sugar kelp, Saccharina latissima, in Danish waters
Department of Environmental Engineering, Technical University of Denmark1
Residual Resource Engineering, Department of Environmental Engineering, Technical University of Denmark2
National Food Institute, Technical University of Denmark3
Division of Industrial Food Research, National Food Institute, Technical University of Denmark4
DHI Water - Environment - Health5
Several seaweed species have been successfully tested for their biofilter potential for integrated multi-trophic aquaculture (IMTA). In this study, Saccharina latissima bioremediation potential was assessed over 12 months with respect to the yield, phosphorous (P), nitrogen (N) content and N removal.
The experiment took place at two commercial cultivation areas; in close proximity to a blue mussel and fish farm (IMTA) and at a reference site, both situated outside Horsens fjord in Denmark. The maximum biomass yield over the first growing season was achieved in August (1.08±0.09 and 1.51±0.13 kg FW m-1) and September (0.92±0.18 and 1.49±0.16 kg FW m-1).Yield was significantly higher at the IMTA compared to the reference site in August (P<0.05).
A second growing season did not improve biofiltration efficiency. The highest N and P removal was achieved in August and September. Again the IMTA location showed better N and P removal compared with the reference site in August; 5.02-7.02 g N and 0.86-1.23 g P m-1 of cultivation line (P<0.05). S. latissima shows potential for assimilation and removal of nutrients, particularly nitrogen.
Seasonal variations of biofilter efficiency, conditions and potential applications should be taken into account when evaluating the best suited harvest time. For Horsens fjord, our results showed that the harvest time should take place in August-September in order to achieve maximum biofiltration efficiency (including N and P in epiphytes).
However, for human consumption, it is better to harvest in May where the seaweed is free of epiphytes.
Language: | English |
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Publisher: | Springer Netherlands |
Year: | 2015 |
Pages: | 1963-1973 |
Proceedings: | 5th Congress of the International Society for Applied Phycology |
ISSN: | 15735176 and 09218971 |
Types: | Journal article and Conference paper |
DOI: | 10.1007/s10811-014-0519-8 |
ORCIDs: | Silva Marinho, Goncalo , Holdt, Susan Løvstad and Angelidaki, Irini |