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Objectives
This
activity aims at treating and integrating data collected in activities 1
to 3 in order to assess the relative importance of each main parameter (ecology,
farm practices and economy) in the production performances. This will be
made through statistical analysis (PCA principal Component analysis...),
spatial analysis. The expected outputs are methodological guidelines and
operational tools.
Methods
1)
A data base will be designed, containing four types of data:
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environmental, |
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farming
practices, |
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socio-economy, |
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production
efficiency. |
This
task will be performed at the beginning of the project, in order to be
operational as soon as data collection starts.
Then,
after completion of data (last third of the project) a statistical
approach will be carried out on variables explaining efficiency,
successively linking production efficiency to :
2)
quantified ecological indicators,
3)
farming practices
4)
socio-economic variables.
5)
Establishing these relationships will allow to identify and compare the
production determinants that will be involved in the data crossing. In a
second step all the sampled farms will be discriminated by a
multivariate analysis between these determinants.
This
will lead to a typology of production systems based on environment,
production system and economics indicators which will then allow to
determine :
a)
the overall best environment,
b)
the most suitable farming practice and socio-economics (investment
capacity, knowledge, etc.) for given environmental features.
A
practical methodological guide will sum up all results and display an
environmental scale indicating which type of aquaculture should be
conducted along with specific parameters of types 2) to 3).
To
give it a user-friendly look, the guide will be illustrated with site maps
elaborated using the GIS : pie charts, graphs overlain on farm maps,
showing the farm integrated in its environment.
The
dissemination of the results will have to be made both locally and
internationally. Apart from traditional articles in scientific journals,
the methodological guide will be edited and published as a
high quality full color booklet, for publicity in the sector of
aquaculture all over Vietnam. The network of fisheries services will be
used for dispatching. It will also be placed on IO Nha Trang web site and
publicised accordingly. Others media such as newsletters (NACA, AIT, World
Aquaculture Society, possible media within the EU) will be sought.
Outputs
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paper
material, i.e. a methodological guide with detailed site maps
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typology,
scale, combining ecological, zootechnical and economical determinants
of production systems,
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training
of 2 or 3 scientists to the multivariate analysis in order to conduct
monitoring survey every five years.
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Duration
last
6 months
Participants
All
partners involved assisted by a specialist in statistics.
Bibliography
Briggs,
M.R.P, Funge-Smith, S., 1994. Unsustainable shrimp culture - causes and
potential solutions from experience in Thailand. 31 pp. in Development of
Strategies for Sustainable Shrimp Farming, Report to the Overseas
Development Administration, Research project R4751. Appendix 2. Stirling,
UK.
DeWalt,B.R.,
Vergne, P. and Hardin, M., 1996. Shrimp aquaculture development and the
environment: people mangroves and fisheries on the Gulf of Fonseca,
Honduras. World Development 24: (7) pp 1193-1208
Escoffier,
B. et Pagès J., 1996. Analyses factorielles simples et multiples;
objectifs, méthodes et interprétation. Seconde édition, Dunod, Paris.
James
P.S.B.R., 1996. Shrimp
Farming Development in India – An overview of environmental,
socio-economic, legal and other implications. Aquaculture
Magazine Online, http://www.aquaculture.com/html/articles.html.
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Project
