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Fuel consumption and air emissions in one of the world’s largest commercial fisheries
2021
Chassot, Emmanuel | Antoine, Sharif | Guillotreau, Patrice | Lucas, Juliette | Assan, Cindy | Marguerite, Michel | Bodin, Nathalie
The little information available on fuel consumption and emissions by high seas tuna fisheries indicates that the global tuna fleet may have consumed about 2.5 Mt of fuel in 2009, resulting in the production of about 9 Mt of CO2-equivalent greenhouse gases (GHGs), i.e., about 4.5–5% of the global fishing fleet emissions. We developed a model of annual fuel consumption for the large-scale purse seiners operating in the western Indian Ocean as a function of fishing effort, strategy, and vessel characteristics based on an original and unique data set of more than 4300 bunkering operations that spanned the period 2013–2019. We used the model to estimate the total fuel consumption and associated GHG and SO2 emissions of the Indian Ocean purse seine fishery between 1981 and 2019. Our results showed that the energetic performance of this fishery was characterized by strong interannual variability over the last four decades. This resulted from a combination of variations in tuna abundance but also changes in catchability and fishing strategy. In recent years, the increased targeting of schools associated with fish aggregating devices in response to market incentives combined with the IOTC management measure implemented to rebuild the stock of yellowfin tuna has strongly modified the productivity and spatio-temporal patterns of purse seine fishing. This had effects on fuel consumption and air pollutant emissions. Over the period 2015 to 2019, the purse seine fishery, including its support vessel component, annually consumed about 160,000 t of fuel and emitted 590,000 t of CO2-eq GHG. Furthermore, our results showed that air pollutant emissions can be significantly reduced when limits in fuel composition are imposed. In 2015, SO2 air pollution exceeded 1500 t, but successive implementation of sulphur limits in the Indian Ocean purse seine fishery in 2016 and 2018 have almost eliminated this pollution. Our findings highlight the need for a routine monitoring of fuel consumption with standardized methods to better assess the determinants of fuel consumption in fisheries and the air pollutants they emit in the atmosphere.
Show more [+] Less [-]Atmospheric pollution at Quebec: 1975-1990
1993
Leduc, R. (Ministere de l'Environnement, Sainte Foy (Canada). Direction de l'Expertise Scientifique) | Bisson, M.
[Monitoring forest dieback in Belgium [pollution, acid rain]]
1985
Laitat, E. (Faculte des Sciences Agronomiques de l'Etat, Gembloux (Belgium). Departement de Biologie Vegetale) | Impens, R.
[Atmospheric pollution measurement in France]
1994
Herz, O. (Agence de l'Environnement et de la Maitrise de l'Energie, Paris (France)) | Stroebel, R. | Sommer, M.
1992 air quality in French urban, industrial and rural areas
1994
Stroebel, R. (Agence de l'Environnement et de la Maitrise de l'Energie, Paris (France))
Mapping critical loads in Europe in the framework of the UN/CEE
1993
Hettelingh, J.P. (Institut National pour la Sante Publique et la Protection de l'Environnement, Bilthoven (Pays Bas). Centre de Coordination pour les Effets)
Comparison status between measurement data (SO2, NO2, CO, O3, lead and suspended dust) deriving from various air pollution monitoring networks of France, Europe and North America
1992
Stroebel, R. (Agence de l'Environnement et la Maitrise de l'Energie, Paris (France). Centre de La Defense)
[Solubilization of fluor by clay acidolysis]
1986
Bardy, E.A. (Association pour la Prevention de la Pollution Atmospherique, Bordeaux (France). Comite Regional Bordeaux-Aquitaine, Laboratoire Municipal) | Pere, C.
[The Vosges forests are dying: which hypothesis should be considered to which extent [pollution agents, acid rain, drought, France, mountain]]
1985
Bonneau, M. (Institut National de la Recherche Agronomique, Seichamps (France). Centre de Nancy, Station de Recherches sur les Sols Forestiers et la Fertilisation)