NDLI: Commercial cultivation and bioremediation potential of sugar kelp, Saccharina latissima, in Danish waters

Content Provider	Springer Nature Link
Author	Marinho, Gonçalo S. Holdt, Susan L. Birkeland, Mads J. Angelidaki, Irini
Copyright Year	2015
Abstract	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) and nitrogen (N) content and 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 fresh weight (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 seaweed biofilter efficiency, condition, 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 when the seaweed is free of epiphytes.
Starting Page	1963
Ending Page	1973
Page Count	11
File Format	PDF
ISSN	09218971
Journal	Journal of Applied Phycology
Volume Number	27
Issue Number	5
e-ISSN	15735176
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-01-20
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biofilter Nitrogen removal Phosphorous removal Epiphytes Year-round variation N quota IMTA Plant Sciences Freshwater & Marine Ecology Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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