Consulta: creatorFacets:"Filgueira, R."
Registros recuperados: 2
Data/hora: 06/06/2024 01:37:55

Probabilistic approach of water residence time and connectivity using Markov Chains with application to tidal embayments
Provedor de dados: 5
Autores: Bacher, Cedric; Filgueira, R.; Guyondet, T.
Markov Chain analysis was recently proposed to assess the time scales and preferential pathways into biological or physical networks by computing residence time, first passage time, rates of transfer between nodes and number of passages in a node. We propose to adapt an algorithm already published for simple systems to physical systems described with a high resolution hydrodynamic model. The method is applied to bays and estuaries on the Eastern Coast of Canada for their interest in shellfish aquaculture. Current velocities have been computed by using a 2 dimensional grid of elements and circulation patterns were summarized by averaging Eulerian flows between adjacent elements. Flows and volumes allow computing probabilities of transition between elements...
Tipo: Text
Palavras-chave: Transfer time; Transfer rate; Residual flow; Indicators; Aquaculture; Hydrodynamics.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00280/39124/37677.pdf

Climate Change Influences Carrying Capacity in a Coastal Embayment Dedicated to Shellfish Aquaculture
Provedor de dados: 5
Autores: Guyondet, T.; Comeau, L. A.; Bacher, Cedric; Grant, J.; Rosland, R.; Sonier, R.; Filgueira, R.
A spatially explicit coupled hydrodynamic-biogeochemical model was developed to study a coastal ecosystem under the combined effects of mussel aquaculture, nutrient loading and climate change. The model was applied to St Peter's Bay (SPB), Prince Edward Island, Eastern Canada. Approximately 40 % of the SPB area is dedicated to mussel (Mytilus edulis) longline culture. Results indicate that the two main food sources for mussels, phytoplankton and organic detritus, are most depleted in the central part of the embayment. Results also suggest that the system is near its ultimate capacity, a state where the energy cycle is restricted to nitrogen-phytoplankton-detritus-mussels with few resources left to be transferred to higher trophic levels. Annually, mussel...
Tipo: Text
Palavras-chave: Climate change; Nutrient loading; Mussel culture; Carrying capacity; Coastal ecosystem; Numerical modelling.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00275/38624/37191.pdf