Bioremediation using Gracilaria lemaneiformis to manage the nitrogen and phosphorous balance in an integrated multi-trophic aquaculture system in Yantian Bay, China

Wei, Zhangliang; You, Jiaguo; Wu, Hai‐Long; Yang, Fangfang; Li, Qiao; Huo, Yuanzi; He, Peimin

doi:10.1016/j.marpolbul.2017.04.034

Cited by 59 publications

(23 citation statements)

References 36 publications

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“…Effluents can be directly valorised by growing primary producers (Milhazes-Cunha and Otero, 2017;Wei et al, 2017;Li et al, 2019). Sludges and effluents from aquaculture activities may also be bioremediated by decomposers, detritivores, and biofilms, whose biomass in turn presents a useful resource for feed production (Martinez-Porchas et al, 2014;Barnharst et al, 2018;Gómez et al, 2019;Robinson et al, 2019).…”

Section: Sustainable Feed Managementmentioning

confidence: 99%

Towards Environmental Sustainability in Marine Finfish Aquaculture

et al. 2021

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Aquaculture is one of the fastest growing food production sectors and has great potential for food security and livelihoods. However, it generates concerning consequences for the environment, including chemical and biological pollution, disease outbreaks, unsustainable feeds and competition for coastal space. Recent investigations are focusing on sustainable techniques (e.g., polyculture, offshore facilities) to improve the relationship between the industry, environment and society. This review provides an overview of the main factors of ecological concern within marine finfish aquaculture, their interactions with the environment, and highlights sustainable alternatives that are currently in use or development. Adequate environmental monitoring and location of farms, the reduction and exploitation of wastes and chemicals being used is crucial to ensure the growth and continuity of aquaculture production.

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Section: Sustainable Feed Managementmentioning

confidence: 99%

Towards Environmental Sustainability in Marine Finfish Aquaculture

et al. 2021

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“…A key challenge in the design of IMTA systems is the balance between fed and extractive species (Wei et al 2017;Fang et al 2019;Nardelli et al 2019). Where ES are algae or plants, it is essential to consider their intrinsic growth and nutrient uptake characteristics.…”

Section: Discussionmentioning

confidence: 99%

Estimation of the potential of Lemna minor for effluent remediation in integrated multi-trophic aquaculture using newly developed synthetic aquaculture wastewater

2021

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Aquaculture is an important source of animal protein and a key contributor to global food security. However, aquaculture can exert a negative effect on the aquatic environment due to the release of effluents containing high nutrient levels. In integrated multi-trophic aquaculture (IMTA), the waste produced by one species is the input for another, referred to as extractive species (ES). Potential ES include plants. In the present study, it was explored whether Lemna minor can be used to remove nitrogen and phosphorus from aquaculture wastewater. A representative synthetic wastewater was designed based on the composition of aquaculture effluents found in the literature. Synthetic wastewater was found to be a suitable medium for growth of Lemna minor, and plants readily took up NH4+-N, NO3-N and PO43--P. In particular, NH4+-N concentrations rapidly decreased. The highest removal rates per square meter of water surface, calculated for NH4+-N, NO3-N and PO43--P, were, respectively, 158, 206 and 32 mg·m-2·day-1, and these rates were achieved at a plant surface density of 80%. As removal of nutrients is essentially a surface area–related process, the effect of plant density on nutrient uptake was determined. Uptake of nutrients per square meter of surface area was highest at the highest plant density. Yet, when uptake rates were calculated per square meter of water area covered by Lemna fronds, the highest removal rates were found at the lowest plant density, and this is likely to be associated with a reduced intraspecific competition. The present work enables the calculation of potential nutrient uptake by Lemna minor and lays the foundation for a more scientific approach to the design of duckweed-based aquaculture wastewater treatment systems.

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“…Studies throughout the world have demonstrated the nutrient bioextractive benefits of macroalgal aquaculture (e.g. Abreu et al 2009;Sanderson et al 2012;Kim et al 2014;Wu et al 2015;Freitas et al 2016;Wei et al 2017); however, IMTA at the unit of a single farm remains uncommon in comparison with large-scaled monoculture (e.g. Park et al 2018).…”

Section: Integrated Multitrophic Aquaculture (Imta)mentioning

confidence: 99%

“…2016; Wei et al . 2017); however, IMTA at the unit of a single farm remains uncommon in comparison with large‐scaled monoculture (e.g. Park et al .…”

Section: Resilience Of the Aquaculture Industrymentioning

confidence: 99%

Resilience of cold water aquaculture: a review of likely scenarios as climate changes in the Gulf of Maine

Bricknell

Birkel

Brawley

et al. 2020

Reviews in Aquaculture

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Climate change is one of the biggest challenges facing development and continuation of sustainable aquaculture in temperate regions. We primarily consider the ecological and physical resilience of aquaculture in the Gulf of Maine (GoM), where a thriving industry includes marine algae, extensive and intensive shellfish aquaculture, and a well-established Atlantic salmon industry, as well as the infrastructure required to support these economically important ventures. The historical record of sea surface temperature in the GoM, estimated from gridded, interpolated in situ measurements, shows considerable interannual and decade-scale variability superimposed on an overall warming trend. Climate model projections of sea surface temperature indicate that the surface waters in the GoM could warm 0.5-3.5°C beyond recent values by the year 2100. This suggests that, while variability will continue, anomalous warmth of marine heatwaves that have been observed in the past decade could become the norm in the GoM ca. 2050, but with the most significant impacts to existing aquaculture along the southernmost region of the coast. We consider adaptations leading to aquacultural resilience despite the effects of warming, larger numbers of harmful nonindigenous species (including pathogens and parasites), acidification, sea-level rise, and more frequent storms and storm surges. Some new species will be needed, but immediate attention to adapt existing species (e.g. preserve/define wild biodiversity, breed for temperature tolerance and incorporate greater husbandry) and aquaculture infrastructure can be successful. We predict that these measures and continued collaboration between industry, stakeholders, government and researchers will lead to sustaining a vibrant working waterfront in the GoM.

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Bioremediation using Gracilaria lemaneiformis to manage the nitrogen and phosphorous balance in an integrated multi-trophic aquaculture system in Yantian Bay, China

Cited by 59 publications

References 36 publications

Towards Environmental Sustainability in Marine Finfish Aquaculture

Towards Environmental Sustainability in Marine Finfish Aquaculture

Estimation of the potential of Lemna minor for effluent remediation in integrated multi-trophic aquaculture using newly developed synthetic aquaculture wastewater

Resilience of cold water aquaculture: a review of likely scenarios as climate changes in the Gulf of Maine

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