Coupling hydrodynamic and individual-based models to simulate long-term larval supply to costal nursery areas
type: Distribution
access URL: https://institut-agro-rennes-angers.hal.science/hal-00840500
format: HTML
issued: 2026-05-10T12:10:58.460143
modified: 2026-05-10T12:10:58.351023

test_moissonnage_selune
type: Agent

Coupling hydrodynamic and individual-based models to simulate long-term larval supply to costal nursery areas
type: Dataset
contact point: Organization
  fn: CCSD
keyword: eastern-channel
keyword: nursery-grounds
keyword: adult-population
keyword: numerical-simulations
keyword: oceanography
keyword: sdvsastplife-sciences-q-bioagricultural-sciencessciences-and-technics-of-fishery
keyword: individual-based-model
keyword: north-atlantic
keyword: essential-fish-habitat
keyword: hydrodynamic-model
keyword: infoeu-reposemanticsarticle
keyword: common-sole
keyword: pleuronectes-platessa
keyword: dover-sole
keyword: solea-solea
keyword: particle-tracking-model
keyword: sole-solea-solea
keyword: recruitment-variability
keyword: journal-articles
keyword: larval-supply
keyword: eastern-english-channel
landing page: 1054-6006
description: For many marine fish species, recruitment is strongly related to larval survival and dispersal to nursery areas. Simulating larval drift should help assessing the sensitivity of recruitment variability to early life history. An individual-based model (IBM) coupled to a hydrodynamic model was used to simulate common sole larval supply from spawning areas to coastal and estuarine nursery grounds at the population scale in the eastern Channel on a 14-yr time series, from 1991 to 2004. The IBM allowed each particle released to be transported by currents from the hydrodynamic model, to grow with temperature, to migrate vertically giving stage development, and possibly to die according to drift duration, representing the life history from spawning to metamorphosis. Despite sensitivity to the larval mortality rate, the model provided realistic simulations of cohort decline and spatio-temporal variability of larval supply. The model outputs were analysed to explore the effects of hydrodynamics and life history on the interannual variability of settled sole larvae in coastal nurseries. Different hypotheses of the spawning spatial distribution were also tested, comparing homogeneous egg distribution to observation and potential larval survival (PLS) maps. The sensitivity analyses demonstrated that larval supply is more sensitive to the life history along larval drift than to the phenology and volume of spawning, providing explanations for the lack of significant stockrecruitment relationship. Nevertheless, larval supply is sensitive to spawning distribution. Results also suggested a very low connectivity between supposed different sub-populations in the eastern Channel.
issued: 2026-05-10T12:10:58.433125
language: en
modified: 2026-05-10T12:10:58.433130