Publications des scientifiques de l'IRD

Helias A., Langlois J., Fréon Pierre. (2018). Fisheries in life cycle assessment : operational factors for biotic resources depletion. Fish and Fisheries, 19 (6), p. 951-963. ISSN 1467-2960.

Titre du document
Fisheries in life cycle assessment : operational factors for biotic resources depletion
Année de publication
2018
Type de document
Article référencé dans le Web of Science WOS:000448273100001
Auteurs
Helias A., Langlois J., Fréon Pierre
Source
Fish and Fisheries, 2018, 19 (6), p. 951-963 ISSN 1467-2960
Life cycle assessment (LCA) is the normed and international framework for assessing the environmental impacts of most human activities. LCA is commonly used to assess various aspects of fisheries but is only at the onset for estimating impacts of fish removal. This study proposes original characterization factors (CFs) to quantify impacts on biotic resources using the mass of fish caught. This mid-point assessment occurs in impact pathways leading to natural resources, one of the three areas of protection in LCA, and thus fisheries can be compared according to the depleted stock fraction. CFs are defined by the marginal approach applied to the Schaefer model, representing the dynamics of the stocks. They combine catches, current biomass and maximum intrinsic growth rates, determined from the application of the CMSY algorithm (Froese etal. (2017), Fish Fish, 18, 506) with FAO and FishBase data. A multistock CF is also proposed and used for multispecies-stocks. CFs for the 4,993 stocks defined from global FAO areas are obtained and sorted according to the robustness of the model hypotheses. CF values among stocks generally tend to decrease when fish catches increase because high catches are generally associated with abundant stocks. Multispecies-stocks CFs for the northeast Atlantic Ocean are compared to ICES-based CFs and are reliable for the main fished stocks. With this simple and generic structure, this operational fish resource depletion potential could be extended to other biotic resources.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Ecologie, systèmes aquatiques [036] ; Ressources halieutiques [040]
Localisation
Fonds IRD [F B010074334]
Identifiant IRD
fdi:010074334
Contact