IMTA-EFFECT: Integrated Multi Trophic Aquaculture for EFFiciency and Environmental ConservaTion
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1
Estação Piloto de Piscicultura de Olhão, Instituto Português do Mar e Atmosfera, Divisão de Aquacultura e Valorização, Portugal
IMTA-EFFECT (2016) is an ERA-Net COFASP (Cooperation in Fisheries, Aquaculture and Seafood Processing) project created as under the KBBE (European Knowledge Based Bio-Economy) theme in FP7 and is part of the Europe 2020 strategy. The aim of the study is to develop more efficient, economically and eco-friendly productions for fish farmers based on integrated multitrophic aquaculture (IMTA) strategies.
Scientists of recognized prestige in their fields has been joined to combine state of the art knowledge and contribute to the development of robust and sustainable aquaculture production approaches. Those scientists are part of 9 leading European research institutions and innovative companies: Sol Agro et Hydrosystèmes Spatialisation (INRA UMR-SAS), Institut des Sciences de l'Evolution de Montpellier (ISEM), Institut Français de Recherche pour l'Exploitation de la Mer-Centre Mediterranee (IFREMER) from France; Institute of Marine Biology, Biotechnology & Aquaculture/Hellenic Centre for Marine Research (IMBBC-HCMR), Department of Applied Hydrobiology / Agricultural University of Athens (AUA-DAH) from Greece; Portuguese Institute of the Sea and Atmosphere (IPMA), Produção e comercialização de algas e seus derivados Lda (ALGAplus) from Portugal; Asociaţia Naţională a Producătorilor din Pescărie (ROMFISH), “Dunarea de Jos” University of Galati (UDJG) from Romania.
Within the scope of IMTA-EFFECT project, several multitrophic aquaculture combinations are being carried out in different latitudes, systems and types of water. Subsequently all these data will be used to develop models with the aim of having a tool to better understand the determinants of growth in IMTA (mass balance and dynamic energy budget - DEB models ) and the contribution of the different parts of the production system to local and global environmental impacts using Life Cycle Assessment – LCA (Aubin, 2013) and Emergy Accounting (Odum, 1996).
This poster describes the trials carried out at IPMA’s Estação Piloto de Piscicultuta de Olhão (EPPO). Two trials were conducted in earthen ponds to optimize synergies and combinations between the different trophic levels.
In the first trial three multitrophic combinations were tested in replicate ponds to evaluate the performance of the organisms: Fish-Oysters-Macroalgae (FOM), Fish-Oysters (FO) and Fish-Macroalgae (FM). The farmed fish were meagre, white seabream and grey mullet and the macroalgae was mainly naturally occurring sea lettuce.
The second trial focus on refining oyster densities in the multitrophic system and on the use of ecological fish feed ration (ECOFEED). Two densities of oysters in replicate ponds were compared and the ecological feed was compared with a commercial fish feed also using replicates.
The results from the first trial indicated worse water quality in the system with fish and macroalgae (FM). These ponds presented higher levels of turbidity (FNU), the water was less transparent (Secchi disk), indicator values for primary production were lower (less chlorophyll, less dissolved oxygen production and pH variations during the day) and there was less dissolved oxygen consumption during the night, together with higher number of working hours by air injectors. Farmed grey mullet and white seabream had higher weight in the combinations were the macroalgae was present while meager performed better in the presence of oyster.
Regarding the second trial, the increase in density of oysters (HD) resulted in less chlorophyll, dissolved oxygen and pH when compared with the pond with lower density (LD) while the number of hours of air injector in HD were higher. Oysters within HD ponds grew less when comparing to LD.
The ECOFEED ponds showed lower concentration of chlorophyll and dissolved oxygen and higher number of hours of air injection when compared with the commercial feed. Oyster weight was significantly lower (P < 0.05) in ECOFEED ponds.
The farmed finfish showed higher total mean weight in HD and ECOFEED ponds.
Acknowledgements
This study had the support of ERA-Net COFASP (Europe 2020 strategy)
References
Aubin J. (2013): Life Cycle Assessment as applied to environmental choices regarding farmed or wild-caught fish. CAB Reviews 8: 1-10
IMTA-EFFECT (2016): IMTA-EFFECT project: Integrated Multi Trophic Aquaculture for EFFiciency and Environmental ConservaTion: https://www6.inra.fr/imta-effect/Project-presentation
Odum HT. (1996): Environmental Accounting: Emergy and Environmental Decision Making. Wiley, New Yourk. 370 pp
Keywords:
Earthen ponds,
ecofeed,
oysters,
meagre,
Grey mullet,
White seabream,
Sea lettuce
Conference:
IMMR'18 | International Meeting on Marine Research 2018, Peniche, Portugal, 5 Jul - 6 Jul, 2018.
Presentation Type:
Poster Presentation
Topic:
Aquaculture
Citation:
Parejo
A,
Quental-Ferreira
H and
Cunha
ME
(2019). IMTA-EFFECT: Integrated Multi Trophic Aquaculture for EFFiciency and Environmental ConservaTion.
Front. Mar. Sci.
Conference Abstract:
IMMR'18 | International Meeting on Marine Research 2018.
doi: 10.3389/conf.FMARS.2018.06.00011
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Received:
27 Apr 2018;
Published Online:
07 Jan 2019.
*
Correspondence:
Mrs. Aída Parejo, Estação Piloto de Piscicultura de Olhão, Instituto Português do Mar e Atmosfera, Divisão de Aquacultura e Valorização, Olhão, 8700-305, Portugal, aida.parejo@ipma.pt