Role of deposit feeders in integrated multi-trophic aquaculture — A model analysis

Cubillo, Alhambra M.; Ferreira, J. A.; Robinson, Shawn; Pearce, Christopher M.; Corner, Richard A.; Johansen, Johan

doi:10.1016/j.aquaculture.2015.11.031

Cited by 78 publications

(62 citation statements)

References 82 publications

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“…Brooks & Mahnken 2003, Wildish et al 2004, Chang et al 2014). These results high- lighting the strong vertical fluxes are in good agreement with Cubillo et al (2016) and suggest a limited usefulness of shellfish for mitigating solid wastes in IMTA sites using current technology and aquaculture practices.…”

Section: Fluxes Of Matter In Imta Sitessupporting

confidence: 74%

Vertical particle fluxes dominate integrated multi‑trophic aquaculture (IMTA) sites: implications for shellfish-finfish synergy

Filgueira¹,

Guyondet²,

Reid³

et al. 2017

Aquacult. Environ. Interact.

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Maximizing the mitigation potential of open-water finfish−shellfish integrated multi-trophic aquaculture (IMTA) farms is complex in terms of co-locating the trophic components. Both the dispersal of finfish aquaculture wastes and biological processes are highly influenced by water circulation. Consequently, the evaluation of shellfish−finfish synergy requires a combined study of biological and physical processes, which can be achieved by the implementation and coupling of mathematical models. A highly configurable mathematical model was developed that can be applied at the apparent spatial scale of IMTA sites. The model tracks different components of the seston, including feed wastes, fish faeces, shellfish faeces, natural detritus and phytoplankton. Based on the characterization of these fluxes, a hypothetical IMTA site was used to explore different spatial arrangements for evaluating finfish−shellfish farm mitigation efficiency. The site was modelled following a factorial design, which tested 2 levels of background seston concentrations, 3 farm designs, 2 hydrodynamic conditions and 2 levels of aquaculture intensity. The model predicts that mitigation efficiency is highly dependent on the background environmental conditions, obtaining maximum mitigation under oligotrophic conditions that stimulate shellfish filtration activity. The dominance of vertical fluxes of particulate matter triggered by the high settling velocity of finfish aquaculture wastes suggests that suspended shellfish aquaculture cannot significantly reduce organic loading of the seabed. Consequently, this suggests that waste mitigation at IMTA sites should be best achieved by placing organic extractive species (e.g. deposit feeders) on the seabed directly beneath finfish cages rather than in suspension in the water column.

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Section: Fluxes Of Matter In Imta Sitessupporting

confidence: 74%

Vertical particle fluxes dominate integrated multi‑trophic aquaculture (IMTA) sites: implications for shellfish-finfish synergy

Filgueira¹,

Guyondet²,

Reid³

et al. 2017

Aquacult. Environ. Interact.

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“…Setup of the FARM model is described by Cubillo et al (2016), and model runs were completed using environmental driver data collected at the SME farm and based on the culture practices used (e.g., stocking density, seed, harvest weights, and cultivation period). FARM models the outputs generated by species growth processes as nitrogen and phosphorus emissions to sea water, used as the inventory data for the monoculture system, being 62.4 t N year −1 and 2.4 t P year −1 .…”

Section: Foreground Datamentioning

confidence: 99%

“…In open water systems, IMTA typically involves production of a hightrophic-level species of finfish around which lower-trophiclevel species of bivalves and/or seaweed are cultured Troell et al 2003). Other combinations of finfish or crustaceans with any filter-feeding organism are also possible (Klinger and Naylor 2012;Cubillo et al 2016). IMTA offers the possibility of bioremediation for nutrient discharges while broadening the economic base of aquaculture farms by means of product diversification (Granada et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Research to understand the environmental benefits of IMTA has taken place (Abreu et al 2009;Reid et al 2009;Klinger and Naylor 2012) for ponds, tanks, and land-based and marine-based setups Troell et al 2003), generally at experimental scales or through mathematical modeling (Ferreira et al 2012;Cubillo et al 2016). Assessments focus on the productivity effects of coculturing species at different trophic levels, as well as the potential of nutrient uptake or waste discharge reduction by the different species mix.…”

Section: Introductionmentioning

confidence: 99%

“…Emissions were predicted using the Farm Aquaculture Resource Management (FARM) model (Ferreira et al 2012;Cubillo et al 2016) for the fish component (monoculture system) and for the fish and oyster component run simultaneously (IMTA system) to define the net emissions. Setup of the FARM model is described by Cubillo et al (2016), and model runs were completed using environmental driver data collected at the SME farm and based on the culture practices used (e.g., stocking density, seed, harvest weights, and cultivation period).…”

Section: Foreground Datamentioning

confidence: 99%

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Accounting for inventory data and methodological choice uncertainty in a comparative life cycle assessment: the case of integrated multi-trophic aquaculture in an offshore Mediterranean enterprise

Beltrán

Chiantore

Pecorino

et al. 2017

Int J Life Cycle Assess

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Purpose Integrated multi-trophic aquaculture (IMTA), growing different species in the same space, is a technology that may help manage the environmental impacts of coastal aquaculture. Nutrient discharges to seawater from monoculture aquaculture are conceptually minimized in IMTA, while expanding the farm economic base. In this study, we investigate the environmental trade-offs for a small-to-medium enterprise (SME) considering a shift from monoculture towards IMTA production of marine fish. Methods A comparative life cycle assessment (LCA), including uncertainty analysis, was implemented for an aquaculture SME in Italy. Quantification and simultaneous propagation of uncertainty of inventory data and uncertainty due to the choice of allocation method were combined with dependent sampling to account for relative uncertainties and statistical testing and interpretation to understand the uncertainty analysis results. Monte Carlo simulations were used as a propagation method. The environmental impacts per kilo of fish produced in monoculture and in IMTA were compared. Twelve impact categories were considered. The comparison is first made excluding uncertainty (deterministic LCA) and then accounting for uncertainties. Results and discussion Deterministic LCA results evidence marginal differences between the impacts of IMTA and monoculture fish production. IMTA performs better on all impacts studied. However, statistical testing and interpretation of the uncertainty analysis results showed that only mean impacts for climate change are significantly different for both productive systems, favoring IMTA. For the case study, technical variables such as scales of production of the species from different trophic levels, their integration (space and time), and the choice of species determine the trade-offs. Also, LCA methodological choices such as that for an allocation method and the treatment of relative uncertainties were determinant in the comparison of environmental trade-offs. Conclusions The case study showed that environmental trade-offs between monoculture and IMTA fish production depend on technical variables and methodological choices. The combination of statistical methods to quantify, propagate, and interpret uncertainty was successfully tested. This approach supports more robust environmental trade-off assessments between alternatives in LCAs with uncertainty analysis by adding information on the significance of results. It was difficult to establish whether IMTA does bring benefits given

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Perspectives on Bivalves Providing Regulating Services in Integrated Multi-Trophic Aquaculture

Strand

Jansen

Jiang

et al. 2018

Goods and Services of Marine Bivalves

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The concept of integrating species into one culture system originates from Asia and the Middle East. Development of integrated aquaculture involving marine bivalves is relatively new, going back to the late 1980s in China and 1990s in the Western world. In this chapter, we present four cases of integrated multitrophic aquaculture (IMTA) where bivalves are involved in providing regulating services: i) shrimp culture in ponds, ii) cascading pond systems, iii) open-water caged finfish culture and iv) bay-scale culture systems. The bay-scale integrated culture system in Sanggou Bay in China represents commercial IMTA where a range of different regulating services are provided by the bivalves. Bivalves use degraded fragments derived from cultured kelp and organic waste products from fish farming, and play an important role in the ecosystem processes of the bay. The provision of regulating services in shrimp and cascading ponds is evident as the system configurations allow for biogeochemical processing of waste to maximize extraction by the bivalves. The current configurations used in open-water finfish cage culture suggest that adaptation of concepts allowing for control of effluent water, producing longer contact times and increased biogeochemical processing of the waste products, will dominate future IMTA development. If global bivalve culture production is sustained, we will likely see more regulating services from 210 bivalves in IMTA systems, as new opportunities may arise for developing novel IMTA configurations and concepts.Abstract in Chinese 摘要:将不同类型的生物组合到一个养殖系统的理念起源于亚洲和中东。包含滤食性贝类的海水综合养殖方式最早可追溯到20世纪 80年代的中国和90年代的西方国家。本章列举了包含滤食性贝类的四种典型多营养层次综合养殖模式(Integrated Multi-trophic Aquaculture, IMTA), 包括:i)池塘虾类养殖;ii)级联式池塘养殖系统,iii)开放海域鱼类网箱养殖,iv)海湾养殖。中国的桑沟湾是成功实现IMTA产业化的典型海湾,滤食性

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Role of deposit feeders in integrated multi-trophic aquaculture — A model analysis

Cited by 78 publications

References 82 publications

Vertical particle fluxes dominate integrated multi‑trophic aquaculture (IMTA) sites: implications for shellfish-finfish synergy

Vertical particle fluxes dominate integrated multi‑trophic aquaculture (IMTA) sites: implications for shellfish-finfish synergy

Accounting for inventory data and methodological choice uncertainty in a comparative life cycle assessment: the case of integrated multi-trophic aquaculture in an offshore Mediterranean enterprise

Perspectives on Bivalves Providing Regulating Services in Integrated Multi-Trophic Aquaculture

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