Consulta: creatorFacets:"Ospina-alvarez, Andres"
Registros recuperados: 2
Data/hora: 27/07/2024 03:01:08

Modeling Fish Egg Production and Spatial Distribution from Acoustic Data: A Step Forward into the Analysis of Recruitment
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ospina-alvarez, Andres; Bernal, Miguel; Alberto Catalan, Ignacio; Roos, David; Bigot, Jean-louis; Palomera, Isabel.
To date, there are numerous transport simulation studies demonstrating the relevance of the hydrodynamics for the advection, dispersion and recruitment of early stages of marine organisms. However, the lack of data has conditioned the use of realistic locations for the model setup and configuration in transport studies. This work (I) demonstrates the key role played by the use of the realistic initial position of the eggs of small pelagic fishes in the analysis of late-larval recruitment in coastal nursery areas and (II) provides a general solution for deriving future egg positions and abundances from adult biomass obtained from acoustic surveys and available fecundity data. Using European anchovy in the NW Mediterranean as a case study, we first analyzed...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00160/27119/25312.pdf

From egg production to recruits: connectivity and inter-annual variability in the recruitment patterns of European anchovy in the northwestern Mediterranean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ospina-alvarez, Andres; Catalan, Ignacio A.; Bernal, Miguel; Roos, David; Palomera, Isabel.
We show the application of a Spatially-Explicit Individual-Based Model (SEIBM) to understand the recruitment process of European anchovy. The SEIBM is applied to simulate the effects of inter-annual variability in parental population spawning behavior and intensity, and ocean dynamics, on the dispersal of eggs and larvae from the spawning area in the Gulf of Lions (GoL) towards the coastal nursery areas in the GoL and Catalan Sea (northwestern Mediterranean Sea). For each of seven years (2003-2009), we initialize the SEIBM with the real positions of anchovy eggs during the spawning peak, from an acoustics-derived eggs production model. We analyze the effect of spawners’ distribution, timing of spawning, and oceanographic conditions on the connectivity...
Tipo: Text
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00250/36156/34711.pdf