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Environmental life cycle assessment of seafood production: A case study of trawler catches in Tunisia.

Authors
  • Abdou, Khaled1
  • Gascuel, Didier2
  • Aubin, Joël3
  • Romdhane, Mohamed Salah4
  • Ben Rais Lasram, Frida5
  • Le Loc'h, François6
  • 1 UR 03AGRO1 Ecosystèmes et Ressources Aquatiques, Institut National Agronomique de Tunisie (INAT), Université de Carthage, 43 Avenue Charles Nicolle, 1082 Tunis, Tunisia; UMR 6539 Laboratoire des Sciences de l'Environnement Marin (CNRS/UBO/IRD/Ifremer), Institut Universitaire Européen de la Mer (IUEM), Technopôle Brest-Iroise, Rue Dumont d'Urville, 29280 Plouzané, France. Electronic address: [email protected] , (France)
  • 2 UMR 985 Ecologie et Santé des Ecosystèmes, Université Européenne de Bretagne, Agrocampus Ouest, 65 rue de Saint-Brieuc, CS 84215, 35042 Rennes Cedex, France. , (France)
  • 3 UMR 1069, Sol Agro et hydrosystème Spatialisation, Institut National de la Recherche Agronomique (INRA), 65 rue de Saint Brieuc, CS 84215, 35042 Rennes Cedex, France. , (France)
  • 4 UR 03AGRO1 Ecosystèmes et Ressources Aquatiques, Institut National Agronomique de Tunisie (INAT), Université de Carthage, 43 Avenue Charles Nicolle, 1082 Tunis, Tunisia. , (Tunisia)
  • 5 Univ. Littoral Côte d'Opale, Univ. Lille, CNRS, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, F 62930 Wimereux, France. , (France)
  • 6 UMR 6539 Laboratoire des Sciences de l'Environnement Marin (CNRS/UBO/IRD/Ifremer), Institut Universitaire Européen de la Mer (IUEM), Technopôle Brest-Iroise, Rue Dumont d'Urville, 29280 Plouzané, France. , (France)
Type
Published Article
Journal
The Science of the total environment
Publication Date
Jan 01, 2018
Volume
610-611
Pages
298–307
Identifiers
DOI: 10.1016/j.scitotenv.2017.08.067
PMID: 28806547
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The Gulf of Gabes is one of the most productive fishery areas in the southern Mediterranean Sea. It is archetypal of an ecosystem in which the effects of fisheries are most pronounced. Demersal trawling is the main fishing activity in the Gulf of Gabes. Life Cycle Assessment (LCA) was applied to assess the environmental performance landing 1t of seafood with wooden demersal trawlers in the Gulf of Gabes. Impact categories included in the study were abiotic depletion potential (ADP), acidification potential (AP), eutrophication potential (EP), global warming potential (GWP), ozone depletion potential (ODP), photochemical oxidant formation potential (POFP), human toxicity potential (HTP), marine eco-toxicity potential (METP), terrestrial eco-toxicity potential (TETP), land occupation potential (LOP), and total cumulative energy demand (TCED). Demersal trawlers were classified based on their impact intensity. Results showed that 70% of the vessels had relatively low impacts. Impact intensity was proportional to the amount of fuel consumed to land 1t of seafood. Ships that fished less had the highest impacts per ton, due to lower fishing effort and catch per unit effort. This is likely to typify vessels that target highly valuable species such as shrimp. Onboard vessel activities contributed most to different environmental impacts (AP, EP, GWP and POFP), related to the high energy use of this fishery. Several impacts (ADP, ODP, METP, LOP and TCED) were associated mainly with fuel and lubricating oil production. Therefore, improvements must focus on minimizing fuel consumption. LCA is a valuable tool for assessing how to increase environmental sustainability of demersal trawling and it can help stakeholders identify the main operational issues that require improvement. Copyright © 2017 Elsevier B.V. All rights reserved.

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