Traditional vs. Integrated Multi-Trophic Aquaculture of Gracilaria chilensis C. J. Bird, J. McLachlan &amp; E. C. Oliveira: Productivity and physiological performance

Abreu, Helena; Varela, Daniel; Henríquez, Luis A.; Villarroel, Adrián; Yarish, Charles; Sousa-Pinto, Isabel; Buschmann, Alejandro H.

doi:10.1016/j.aquaculture.2009.03.043

Cited by 133 publications

(41 citation statements)

References 57 publications

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“…Abreu et al (2009) found that a 100 ha Gracilaria chilensis farm would be needed to fully bioremediate the DIN from a fish farm producing 1000 t of salmon. According to Sanderson et al (2012), a 1 ha Saccharina latissima culture (over 2 growth seasons) might remove the equivalent of 5.3 to 10% of the DIN from a 500 t salmon production in a 2 yr production cycle.…”

Section: Simulation Experiments and Implications For Imtamentioning

confidence: 99%

Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway

Broch¹,

Ellingsen²,

Forbord³

et al. 2013

Aquacult. Environ. Interact.

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A 3-dimensional hydrodynamic−ecological model system (SINMOD) was used to estimate the full-scale cultivation potential of the brown alga Saccharina latissima in integrated multi-trophic aquaculture (IMTA) with Atlantic salmon Salmo salar. A previously developed model for the frond size and composition (carbon and nitrogen content) of S. latissima sporophytes was adjusted to data from an outdoor mesocosm growth experiment and then coupled and run online with the 3-dimensional model system. Results from simulations were compared with data from an IMTA field experiment, providing partial validation of the hydrodynamic-ecologicalkelp model system. The model system was applied to study the large-scale cultivation potential of S. latissima in IMTA with salmon and to quantify its seasonal bioremediation potential. The results suggest a possible yield of 75 t fresh weight S. latissima ha −1 in 4 mo (February to June) and about 170 t fresh weight ha −1 in 10 mo (August to June). The results further suggest that the net nitrogen consumption of a 1 ha S. latissima installation in the vicinity of a fish farm producing approximately 5000 t salmon in a production cycle is about 0.36 (0.15) t NH 4 + -N, or a removal of 0.34% (0.41%) of the dissolved inorganic nitrogen effluent with a cultivation period from August (February) to June. Due to the differing seasonal growth patterns of fish and kelp, there was a mismatch between the maximum effluent of NH 4 + -N from the fish farm and the maximum uptake rates in S. latissima.

show abstract

Section: Simulation Experiments and Implications For Imtamentioning

confidence: 99%

Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway

Broch¹,

Ellingsen²,

Forbord³

et al. 2013

Aquacult. Environ. Interact.

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show abstract

“…A 100 ha Gracilaria (seaweed) farm can theoretically remove 80% of the dissolved nitrogen released by a 1,500 ton salmon farm Abreu et al, 2009). However, it is not known how dissolved nutrients are dispersed within a farm occupying a large area and this will require further studies.…”

Section: Environmental Benefits and Limitationsmentioning

confidence: 99%

State of the Art and Challenges for Offshore Integrated Multi-Trophic Aquaculture (IMTA)

et al. 2018

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By moving away from coastal waters and hence reducing pressure on nearshore ecosystems, offshore aquaculture can be seen as a possible step towards the large-scale expansion of marine food production. Integrated multi-trophic aquaculture (IMTA) in nearshore water bodies has received increasing attention and could therefore play a role in the transfer of aquaculture operations to offshore areas. IMTA holds scope for multi-use of offshore areas and can bring environmental benefits from making use of waste products and transforming these into valuable co-products. Furthermore, they may act as alternative marine production systems and provide scope for alternative income options for coastal communities, e.g., by acting as nodes for farm operation and maintenance requirements. This paper summarizes the current state of knowledge on the implications of the exposed nature of offshore and open ocean sites on the biological, technological and socio-economic performance of IMTA. Of particular interest is improving knowledge about resource flows between integrated species in hydrodynamic challenging conditions that characterize offshore waters.

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“…with their thin thalli and large surface-to-volume ratio are perfect inorganic extractors their biomass does not realize a high price. Therefore, commercially valuable red algae like Porphyra (nori), Gracilaria (as an agarophyte), and Kappaphycus (as a carrageenophyte) are being tested in IMTA systems (Chopin et al 1999;Abreu et al 2009Abreu et al , 2011McVey et al 2002;Pereira and Yarish 2010;Rawson et al 2002;Robertson-Andersson et al 2008;Lombardi et al 2006). Depending on the region, particularly those with pronounced seasons, seaweeds in IMTAs may have to be exchanged for other species in the course of the year, which requires additional engineering efforts to suit each species' requirements.…”

Section: Integrated Multi-trophic Aquaculture (Imta)mentioning

confidence: 99%

“…Simultaneously the biomass of carefully chosen extractive and marketable species could at least partly counterbalance the considerable costs for fish or shrimp feed (Neori et al 2004;Abreu et al 2009). Moreover, there are oligotrophic seawater conditions, like in Israel or Australia, that do not allow the growth of algae and it makes sense to try intelligent new aquaculture approaches under these circumstances (Schuenhoff et al 2003;Butterworth 2010;Neori et al 2004).…”

Section: Integrated Multi-trophic Aquaculture (Imta)mentioning

confidence: 99%

“…It needs the owners' consent to use existing fish or shrimp cultures to establish an IMTA system: In open sea, but nearshore systems, different components of an IMTA can simply be placed in each other's vicinity with mutual beneficial effects provided local currents and other water dynamics allow sufficient exchange between them (Abreu et al 2009;Sanderson 2009;McVey et al 2002;Chopin et al 2001;Troell et al 1999;Petrell and Alie 1996). The alternatives are land-based tank systems or ponds that can be separated from sea water inflow at periods of toxic algal blooms or oil spills, etc.…”

Section: Integrated Multi-trophic Aquaculture (Imta)mentioning

confidence: 99%

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Seaweed and Man

2012

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Traditional vs. Integrated Multi-Trophic Aquaculture of Gracilaria chilensis C. J. Bird, J. McLachlan & E. C. Oliveira: Productivity and physiological performance

Cited by 133 publications

References 57 publications

Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway

Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway

State of the Art and Challenges for Offshore Integrated Multi-Trophic Aquaculture (IMTA)

Seaweed and Man

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