Consulta: creatorFacets:"Grant, Jon"
Registros recuperados: 6
Data/hora: 09/06/2024 14:57:48

Availability and usefulness of economic data on the effects of aquaculture: a North Atlantic comparative assessment
Provedor de dados: 5
Autores: Mikkelsen, Eirik; Fanning, Lucia; Kreiss, Cornelia; Billing, Suzannah‐lynn; Dennis, John; Filgueira, Ramon; Grant, Jon; Krause, Gesche; Lipton, Doug; Miller, Molly; Perez, Jose; Stead, Selina; Villasante, Sebastian.
This paper focuses on the availability of economic indicators and metrics to assess effects of marine aquaculture production in the North Atlantic area (the EU, Norway, Canada and USA), including also social and environmental effects. We consider how aquaculture planning and management is organised in the different countries and the usefulness of economic information to address different aquaculture‐related policies. We find that the most relevant economic data for aquaculture management should be at the local and regional levels rather than nationally. The availability of such economic data is mapped for national, regional and local level. The focus is on data that are publicly available from authorities or research institutions. The availability of data...
Tipo: Text
Palavras-chave: Aquaculture; Economic data; Management; Planning; Policy relevance.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00646/75811/76753.pdf

Modelling the effect of food depletion on scallop growth in Sungo Bay (China)
Provedor de dados: 5
Autores: Bacher, Cedric; Grant, Jon; Hawkins, Anthony; Fang, Jianguang; Zhu, Mingyuan; Besnard, Melanie.
Sungo Bay (China) has a mean depth of 10 m, a total area of 140 km(2) and is occupied by several types of aquaculture, whilst opening to the ocean. The production of scallops (Chlamys farreri) cultured on long lines is estimated to exceed 50 000 tonnes (total weight) per year. Selection of sites for scallop growth and determination of suitable rearing densities have become important issues. In this study, we focused on the local scale (e.g. 1000 m) where rearing density, food concentration and hydrodynamics interact. We have developed a depletion model coupling a detailed model of C. farreri feeding and growth and a one-dimensional horizontal transport equation. The model was applied to assess the effect of some environmental parameters (e.g. food...
Tipo: Text
Palavras-chave: Chlamys farreri; Transport equation; Rearing density; Energy budget.
Ano: 2003
URL: https://archimer.ifremer.fr/doc/2003/publication-570.pdf

Progressing aquaculture through virtual technology and decision-support tools for novel management
Provedor de dados: 5
Autores: Ferreira, Joao Gomez; Aguilar-manjarrez, José; Bacher, Cedric; Black, Kenny; Dong, S.l.; Grant, Jon; Hofmann, Eileen E.; Kapetsky, Jim; Leung, P.s.; Pastres, Roberto; Strand, Oivind; Zhu, C.b.
Attention is presently turning to the processes, methods and tools that allow the principles of the ecosystem approach to aquaculture to be translated into practical implementation. An essential element for this is the use of virtual technology and decision-support tools, particularly if developing nations are to implement the key elements of aquaculture sustainability. We provide an overview of current and emerging issues and trends related to this topic over the past decade, an assessment of progress with regard to the expectations and commitments expressed in the Bangkok Declaration and conclude with some thoughts for the future.
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00086/19747/17387.pdf

A physical-biogeochemical coupling scheme for modeling marine coastal ecosystems
Provedor de dados: 5
Autores: Filgueira, Ramon; Grant, Jon; Bacher, Cedric; Carreau, Michel.
Ecological modeling of dynamic systems such as marine environments may require detailed spatial resolution when the modeled area is greatly influenced by complex physical circulation. Therefore, the simulation of a marine ecosystem must be underlain by a physical model. However, coupling hydrodynamic and biogeochemical models is not straightforward. This paper presents a modeling technique that can be used to build generic and flexible fully-spatial physical-biogeochemical models to study coastal marine ecosystems using a visual modeling environment (VME). The model core is constructed in Simile, a VME that has the capacity to create multiple instances of submodels that can be interconnected, producing a fully-spatial simulation. The core is designed to...
Tipo: Text
Palavras-chave: Physical-biogeochemical coupling; Marine spatial planning; Aquaculture; Simile.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00071/18231/15842.pdf

Influence of suspended mussel lines on sediment erosion and resuspension in Lagune de la Grande Entrée, Îles-de-la-Madeleine, Québec, Canada
Provedor de dados: 5
Autores: Walker, Tony R.; Grant, Jon; Weise, Andrea M.; Mckindsey, Christopher W.; Callier, Myriam D.; Richard, Marion.
Downward fluxes of organically rich biodeposits under suspended mussel lines can cause benthic impacts such as changes in benthic community structure or microbial mat production. Quantifying sediment erosion in these coastal ecosystems is important for understanding how fluxes of organic matter and mussel biodeposits contribute to benthic–pelagic coupling. Critical shear velocity (u*crit), erosion rates and particle size distributions of resuspended sediment were measured at four stations distributed along a transect perpendicular to a mussel farm in Lagune de la Grande Entrée, Îles-de-la-Madeleine (Quebec, Canada). Stations were selected underneath the outer-most mussel line (0 m) and at distances of 15, 30 m and at a reference station (500 m) further...
Tipo: Text
Palavras-chave: Sediment erosion; Shear velocity; Resuspension; Biodeposits; Particle size; Mytilus edulis.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00202/31287/31925.pdf

Visualizing the social in aquaculture: How social dimension components illustrate the effects of aquaculture across geographic scales
Provedor de dados: 5
Autores: Krause, Gesche; Billing, Suzannah-lynn; Dennis, John; Grant, Jon; Fanning, Lucia; Filgueira, Ramón; Miller, Molly; Perez, Jose; Stybel, Nardine; Stead, Selina M.; Wawrzynski, Wojciech.
Until very recently, governments of many countries, as well as their supporting organizations, have primarily addressed the biological, technical and economic aspects of aquaculture. In contrast, social and cultural aspects of aquaculture production have taken a backseat. Drawing on the observation that aquaculture development in Western Societies has largely failed to address these social effects across different scales and contexts, this paper offers a new way of capturing and visualising the diverse social dimensions of aquaculture. It does so by testing the ability to operationalise a set of social dimensions based on categories and indicators put forward by the United Nations, using several case studies across the North Atlantic. Local/regional...
Tipo: Text
Palavras-chave: Social dimensions; Aquaculture; Indicators; Operationalisation; Sustainability; Finfish production; Mussel farming.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00630/74170/73770.pdf