Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis

Biofloc technology (BFT) has been called an environmentally friendly aquaculture approach. The sustainable characteristics of biofloc-based culture are usually linked to the efficient use of water and nutrients and the minimal discard of effluent to the environment. Given the scarcity of sustainabil...

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Autores principales:	Luiz H. David, Sara M. Pinho, Karel J. Keesman, Fabiana Garcia
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Aquaculture BFT Emergy synthesis Sustainability Tilapia farming Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/78933ddb4efc458893f330d920ccbf7d
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spelling	oai:doaj.org-article:78933ddb4efc458893f330d920ccbf7d2021-12-01T05:00:21ZAssessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis1470-160X10.1016/j.ecolind.2021.108186https://doaj.org/article/78933ddb4efc458893f330d920ccbf7d2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21008517https://doaj.org/toc/1470-160XBiofloc technology (BFT) has been called an environmentally friendly aquaculture approach. The sustainable characteristics of biofloc-based culture are usually linked to the efficient use of water and nutrients and the minimal discard of effluent to the environment. Given the scarcity of sustainability assessment of biofloc-based systems, it is still unclear whether the positive characteristics of BFT make it a real sustainable approach for aquaculture. This study aimed to investigate and apply the emergy synthesis to assess the sustainability of commercial Nile tilapia fingerlings production in a biofloc-based system. The tilapia fingerlings produced on the BFT farm showed a UEV of 2.04E + 03 sej/J, renewability of 32.73%, EYR of 1.00, EIR, and ELR of 2.05, and ESI of 0.49. Compared to other aquaculture systems, the evaluated BFT farm presented emergy indicators with values characteristic of potentially sustainable production. Electricity has the highest representativeness in the emergy input, making the system dependent on resources from the larger economy. The low UEV indicates that the BFT farm is efficient in terms of converting the invested emergy into the system’s output (tilapia fingerlings). A sensitivity analysis shows that replacing the hydroelectric source of electricity with photovoltaic will not improve the emergy performance of the evaluated BFT farm.Luiz H. DavidSara M. PinhoKarel J. KeesmanFabiana GarciaElsevierarticleAquacultureBFTEmergy synthesisSustainabilityTilapia farmingEcologyQH540-549.5ENEcological Indicators, Vol 131, Iss , Pp 108186- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture BFT Emergy synthesis Sustainability Tilapia farming Ecology QH540-549.5
spellingShingle	Aquaculture BFT Emergy synthesis Sustainability Tilapia farming Ecology QH540-549.5 Luiz H. David Sara M. Pinho Karel J. Keesman Fabiana Garcia Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis
description	Biofloc technology (BFT) has been called an environmentally friendly aquaculture approach. The sustainable characteristics of biofloc-based culture are usually linked to the efficient use of water and nutrients and the minimal discard of effluent to the environment. Given the scarcity of sustainability assessment of biofloc-based systems, it is still unclear whether the positive characteristics of BFT make it a real sustainable approach for aquaculture. This study aimed to investigate and apply the emergy synthesis to assess the sustainability of commercial Nile tilapia fingerlings production in a biofloc-based system. The tilapia fingerlings produced on the BFT farm showed a UEV of 2.04E + 03 sej/J, renewability of 32.73%, EYR of 1.00, EIR, and ELR of 2.05, and ESI of 0.49. Compared to other aquaculture systems, the evaluated BFT farm presented emergy indicators with values characteristic of potentially sustainable production. Electricity has the highest representativeness in the emergy input, making the system dependent on resources from the larger economy. The low UEV indicates that the BFT farm is efficient in terms of converting the invested emergy into the system’s output (tilapia fingerlings). A sensitivity analysis shows that replacing the hydroelectric source of electricity with photovoltaic will not improve the emergy performance of the evaluated BFT farm.
format	article
author	Luiz H. David Sara M. Pinho Karel J. Keesman Fabiana Garcia
author_facet	Luiz H. David Sara M. Pinho Karel J. Keesman Fabiana Garcia
author_sort	Luiz H. David
title	Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis
title_short	Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis
title_full	Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis
title_fullStr	Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis
title_full_unstemmed	Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis
title_sort	assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/78933ddb4efc458893f330d920ccbf7d
work_keys_str_mv	AT luizhdavid assessingthesustainabilityoftilapiafarminginbioflocbasedcultureusingemergysynthesis AT sarampinho assessingthesustainabilityoftilapiafarminginbioflocbasedcultureusingemergysynthesis AT kareljkeesman assessingthesustainabilityoftilapiafarminginbioflocbasedcultureusingemergysynthesis AT fabianagarcia assessingthesustainabilityoftilapiafarminginbioflocbasedcultureusingemergysynthesis
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Assessing the sustainability of tilapia farming in biofloc-based culture using emergy synthesis

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