Consulta: creatorFacets:"Rosland, Rune"
Registros recuperados: 5
Data/hora: 04/06/2024 17:16:26

Modelling growth variability in longline mussel farms as a function of stocking density and farm design
Provedor de dados: 5
Autores: Rosland, Rune; Bacher, Cedric; Strand, Oivind; Aure, Jan; Strohmeier, Tore.
Mussels (Mytilus edulis) are commonly cultivated on artificial structures like rafts, poles or longlines to facilitate farming operations. Farm structures and dense mussel populations may result in water flow reduction and seston depletion and thus reduced individual mussel growth and spatial growth variability inside a farm. One of the challenges in mussel farming is thus to scale and configure farms in order to optimise total mussel production and individual mussel quality under different environmental regimes. Here we present a spatially resolved model for simulation of flow reduction, seston depletion and individual mussel growth inside a longline farm based on information about farm configuration (spacing between longlines, farm length and stocking...
Tipo: Text
Palavras-chave: Longline farm configuration; Environmental conditions; Flow reduction; Seston depletion; Spatial growth variability.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00038/14887/12210.pdf

A DEB based analysis of growth and toxin elimination processes in mussels (Mytilus edulis) exposed to Diarrhetic Shellfish Toxins (DST)
Provedor de dados: 5
Autores: Rosland, Rune; Alunno-bruscia, Marianne; Duinker, Arne; Strand, Oivind; Strohmeier, Tore.
A Dynamic Energy Budget(DEB) model was used to analyse growth and toxin elimination processes in musselsthat had been exposed to Diarrhetic Shellfish Toxins (DST). After DST exposure mussels were placed inan experimentalin-situ setup, expected to have low concentrations of toxic phytoplankton, and DST concentrations in mussel tissueswere regularly monitored along with temperature and seston concentration and composition in the water. A one-compartment model for DST concentrations and elimination rate was integrated with the DEB model, assuming that storage and structural compartments absorb DST. The model was used to simulate growth and toxin elimination rates from mussel tissues. Toxin elimination rate was obtained by a calibration between observed and...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00148/25936/24001.pdf

Individual mussel growth model using DEB (Dynamic Energy Budget) theory: revisiting the DEB parameter values for Mytilus edulis
Provedor de dados: 5
Autores: Flye Sainte Marie, Jonathan; Alunno-bruscia, Marianne; Gangnery, Aline; Rannou, Eric; Rosland, Rune; Strand, Øivind.
Mussel aquaculture is well developed in various ecosystems of temperate waters. In the aim of developing predictive tools for management of mussel aquaculture, a better understanding of relationships between the environmental conditions and mussel growth is necessary. For this purpose, development of bioenergetic models, linking environmental variables (especially food resource and temperature) and mussel growth and reproduction, are of a particular interest. Dynamic Energy Budget (DEB) theory offers a general framework to study energy flows in organisms, from assimilation to use for maintenance, growth and reproduction. This theory is appropriate for growth modelling of marine organisms and have first been applied in 1993 to model mussel growth....
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00032/14368/11658.pdf

Response of Mytilus edulis to enhanced phytoplankton availability by controlled upwelling in an oligotrophic fjord
Provedor de dados: 5
Autores: Strohmeier, Tore; Strand, Oivind; Alunno-bruscia, Marianne; Duinker, Arne; Rosland, Rune; Aure, Jan; Erga, Svein R.; Naustvoll, Lars J.; Jansen, Henrice M.; Cranford, Peter J.
The controlled upwelling of nutrient-rich deep water in oligotrophic coastal regions has been proposed as a means of increasing phytoplankton and, subsequently, bivalve aquaculture production. This was tested as part of a large-scale upwelling experiment in an oligotrophic environment (Lysefjord, Norway). The mean chlorophyll a concentration in the upwelling area was consistently higher than at the control site (mean ± SD: 3.3 ± 1.9 and 1.5 ± 0.6 mg Chl a m-3, respectively) during the 4 mo of controlled upwelling. After 2 mo with upwelling, the dry flesh weight of 1 yr-old and 2 yr-old mussels was 95% and 24% higher, respectively, than that of the mussels at the control site. The 1 yr-old mussels at the upwelling site achieved up to 2.4-fold higher dry...
Tipo: Text
Palavras-chave: Bivalve aquaculture; Production carrying capacity; Physiology; Fjord ecosystems; Shell growth; Tissue growth.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00241/35200/33704.pdf

Growth of blue mussels in a Norwegian and French culture site: comparison of food proxies with Dynamic Energy Budgets (DEB)
Provedor de dados: 5
Autores: Alunno-bruscia, Marianne; Rosland, Rune; Strand, Øivind; Naustvoll, Lars; Robert, Stephane; Bacher, Cedric.
Introduction The blue mussel (Mytilus edulis) culture occurs in temperate waters around the world under a wide range of environmental conditions, e.g. at phytoplankton concentrations below as 1-2 µg L-1 (in Norwegian fjords) up to 9-10 µg L-1 (in French Atlantic coastal sites). Under such contrasted food resources, the aim of our study is to develop a generic bio-energetic model for M. edulis, i.e. that can be applied in various contrasted environments with a constant set of parameters, to simulate growth and reproduction of the blue mussel. Such a model will allow us to assess directly the links between mussel growth performances and environmental parameters in different culture sites.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00032/14362/11664.pdf