O. Le Pape
Agrocampus Ouest
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Publication
Featured researches published by O. Le Pape.
Journal of Fish Biology | 2009
Sylvain Bonhommeau; O. Le Pape; Didier Gascuel; Bruno Blanke; Anne-Marie Treguier; Nicolas Grima; Martin Castonguay; Etienne Rivot
Using Lagrangian simulations, based on circulation models over three different hydroclimatic periods in the last 45 years in the North Atlantic Ocean, the trans-Atlantic migration of the European eel Anguilla anguilla leptocephali was simulated via the passive drift of particles released in the spawning area. Three different behaviours were modelled: drifting at fixed depth, undergoing a vertical migration or choosing the fastest currents. Simulations included mortality hypotheses to estimate a realistic mean migration duration and relative survival of A. anguilla larvae. The mean migration duration was estimated as 21 months and the mortality rate as 3.8 per year, i.e. < 0.2% of A. anguilla larvae may typically survive the trans-Atlantic migration.
Ecological Applications | 2013
S. Rochette; O. Le Pape; J. Vigneau; Etienne Rivot
This paper proposes a hierarchical Bayesian framework for modeling the life cycle of marine exploited fish with a spatial perspective. The application was developed for a nursery-dependent fish species, the common sole (Solea solea), on the Eastern Channel population (Western Europe). The approach combined processes of different natures and various sources of observations within an integrated framework for life-cycle modeling: (1) outputs of an individual-based model for larval drift and survival that provided yearly estimates of the dispersion and mortality of eggs and larvae, from spawning grounds to settlement in several coastal nurseries; (2) a habitat suitability model, based on juvenile trawl surveys coupled with a geographic information system, to estimate juvenile densities and surface areas of suitable juvenile habitat in each nursery sector; (3) a statistical catch-at-age model for the estimation of the numbers-at-age and the fishing mortality on subadults and adults. The approach provided estimates of hidden variables and parameters of key biological significance. A simulation approach provided insight to the robustness of the approach when only weak data are available. Estimates of spawning biomass, fishing mortality, and recruitment were close to the estimations derived from stock-assessment working groups. In addition, the model quantified mortality along the life cycle, and estimated site-specific density-dependent mortalities between settled larvae and age-0 juveniles in each nursery ground. This provided a better understanding of the productivity and the specific contribution of each nursery ground toward recruitment and population renewal. Perspectives include further development of the modeling framework on the common sole and applications to other fish species to disentangle the effects of multiple interacting stress factors (e.g., estuarine and coastal nursery habitat degradation, fishing pressure) on population renewal and to develop risk analysis in the context of marine spatial planning for sustainable management of fish resources.
Estuarine Coastal and Shelf Science | 2009
Anne Courrat; Jérémy Lobry; D. Nicolas; Pascal Laffargue; Rachid Amara; Mario Lepage; Michel Girardin; O. Le Pape
Journal of Sea Research | 2010
S. Rochette; Etienne Rivot; Jocelyne Morin; Steven Mackinson; Philippe Riou; O. Le Pape
Estuarine Coastal and Shelf Science | 2010
D. Nicolas; Jérémy Lobry; O. Le Pape; Philippe Boët
Progress in Oceanography | 2011
Géraldine Lassalle; Jérémy Lobry; Paco Bustamante; Grégoire Certain; D. Delmas; Christine Dupuy; C. Hily; C. Labry; O. Le Pape; E. Marquis; Pierre Petitgas; Claire Pusineri; Vincent Ridoux; Jérôme Spitz; Nathalie Niquil
Ocean & Coastal Management | 2014
O. Le Pape; Juliette Delavenne; Sandrine Vaz
Estuarine Coastal and Shelf Science | 2013
Rita P. Vasconcelos; O. Le Pape; M.J. Costa; Henrique N. Cabral
Journal of Sea Research | 2013
O. Le Pape; J. Modéran; G. Beaunée; Pascal Riera; D. Nicolas; Nicolas Savoye; Mireille Harmelin-Vivien; Audrey M. Darnaude; Anik Brind'Amour; H. Le Bris; Henrique N. Cabral; Catarina Vinagre; Stéphanie Pasquaud; Susana França; C. Kostecki
Estuarine Coastal and Shelf Science | 2011
C. Kostecki; S. Rochette; R. Girardin; M. Blanchard; Nicolas Desroy; O. Le Pape