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Connectivity between seamounts and coastal ecosystems in the Southwestern Indian Ocean 5
Crochelet, Estelle; Barrier, Nicolas; Andrello, Marco; Marsac, Francis; Spadone, Aurélie; Lett, Christophe.
Understanding larval connectivity patterns is critical for marine spatial planning, particularly for designing marine protected areas and managing fisheries. Patterns of larval dispersal and connectivity can be inferred from numerical transport models at large spatial and temporal scales. We assess model-based connectivity patterns between seamounts of the Southwestern Indian Ocean (SWIO) and the coastal ecosystems of Mauritius, La Réunion, Madagascar, Mozambique and South Africa, with emphasis on three shallow seamounts (La Pérouse [LP], MAD-Ridge [MR] and Walters Shoal [WS]). Using drifter trajectory and a Lagrangian model of ichthyoplankton dispersal, we show that larvae can undertake very long dispersion, with larval distances increasing with pelagic...
Tipo: Text Palavras-chave: Seamounts; Connectivity; Larval duration; Larval drift; Lagrangian modelling; Biophysical model; Surface drifters; Southwestern indian ocean; Ichthyop.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00613/72461/71423.pdf
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A hierarchical Bayesian model for embedding larval drift and habitat models in integrated life cycles for exploited fish 5
Rochette, Sebastien; Le Pape, Olivier; Vigneau, Joel; Rivot, Etienne.
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...
Tipo: Text Palavras-chave: Eastern Channel (Western Europe); Habitat suitability model; Hierarchical Bayesian model; Hydrodynamic models; Integrated model; Larval drift; Life cycle; Nursery; Recruitment; Sole; Solea solea; Spatially structured.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00161/27243/25454.pdf
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Fish larvae from the upper Paraná River: do abiotic factors affect larval density? 83
Baumgartner,Gilmar; Nakatani,Keshiyu; Gomes,Luiz Carlos; Bialetzki,Andréa; Sanches,Paulo Vanderlei; Makrakis,Maristela Cavicchioli.
The purpose of this study was to evaluate the role of abiotic factors on fish larvae occurrence. Samplings were carried out monthly at 12 stations (grouped in four areas) in the Amambaí, Ivaí and Paraná rivers and in the Itaipu Reservoir (upper Paraná River basin), from October 1994 to January 1995 (spawning season). Simultaneously, we obtained water temperature, pH, electrical conductivity, dissolved oxygen, water level, water velocity, and rainfall. Principal Component Analyses (PCA) and Detrended Correspondence Analyses (DCA) were applied to summarize abiotic and larvae density data, respectively. Amambaí River differed significantly from the other areas in relation to abiotic factors. Itaipu Reservoir differed significantly from the other areas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Larval ecology; Spatial distribution; Floodplain; Itaipu reservoir; Larval drift.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400002
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