Depth matters for bivalve culture in integrated multitrophic aquaculture (IMTA) and other polyculture strategies under non-eutrophic conditions

Bivalve cultivation, in single cultivation or in polyculture (including integrated multitrophic aquaculture; IMTA), is generally limited to eutrophic waters. We carried out a modeling study to test if, under meso- and oligotrophic conditions, depth could be a key factor for bivalve productivity asso...

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Bibliographic Details
Published in:Aquaculture international 2018-10, Vol.26 (5), p.1161-1170
Main Authors: Sanz-Lazaro, Carlos, Fernandez-Gonzalez, Victoria, Arechavala-Lopez, Pablo, Izquierdo-Gomez, David, Martinez-Garcia, Elena, Sanchez-Jerez, Pablo
Format: Article
Language:English
Subjects:
Aquaculture
Biomedical and Life Sciences
Bivalve culture
Bivalvia
Chlorophylls
Cultivation
Depth
Eutrophic environments
Eutrophic waters
Eutrophication
Fish
Fish culture
Fish farms
Freshwater & Marine Ecology
Life Sciences
Modelling
Mollusks
Organic matter
Particulate organic matter
Phytoplankton
Polyculture
Polyculture (aquaculture)
Resource management
Shellfish
Sustainable aquaculture
Sustainable development
Water column
Zoology
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Summary:Bivalve cultivation, in single cultivation or in polyculture (including integrated multitrophic aquaculture; IMTA), is generally limited to eutrophic waters. We carried out a modeling study to test if, under meso- and oligotrophic conditions, depth could be a key factor for bivalve productivity associated to IMTA and other polyculture strategies. We applied the model Farm Aquaculture Resource Management (FARM) at three strata of the water column in two coastal fish farm areas in the Mediterranean Sea, using water column variables sampled seasonally to estimate the potential mussel production. According to FARM, mussel production was high in both areas and, in some cases, almost doubled when mussels were cultured below 25-m depth compared to shallower levels. Phytoplankton abundance is expected to notably influence mussel production compared to particulate organic matter. Thus, in meso- and oligotrophic stratified waters, where chlorophyll maximum is relatively deep, depth can be a key factor for the productivity of mussel cultivation. The obtained results could help to maximize the production of suspension-feeding bivalve cultivation and, therefore, the expansion and development of sustainable aquaculture in non-eutrophic marine waters.
ISSN:0967-6120
1573-143X
DOI:10.1007/s10499-018-0276-9