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Fish larval transport in the coastal waters through ecological modelling

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Relation http://eprints.cmfri.org.in/10342/
 
Title Fish larval transport in the coastal
waters through ecological modelling
 
Creator George, Grinson
 
Subject Theses
Eggs and Larvae
Trophic Modelling
 
Description It could be inferred from the study that ambient environmental parameters and
food are major factors for larval survival and transport. This study further indicates that
the chlorophyll abundance in the dwelling habitats of sardine at the initiation of their active
breeding phase acts like a precursor of their annual biomass. In the case of passive
swimmers and fish larvae numerical modelling is an effective tool in explaining the larval
transport processes. There are initiatives globally to model the larval transport of marine
organisms, and the present study is an attempt in that direction to explore the larval transport
processes in the western coastal waters of India. Sparse reports and data sets on early
life history stages of the marine organisms is a major lacunae in the study. This emphasizes
the importance of generating long term datasets for the larvae of marine organisms
in the Indian coastal waters. The future scope for this study is to improve the numerical
model by incorporating the biological variables like prey-predation, food abundance
and natural mortality. This can be achieved by carrying out the simulations for different
regions and comparing them with longer time series data set. Remote Sensing and Geographical
Information System (RS-GIS) can be largely used for demarcating potentially
rich larval nursery areas based on modelling and observations. This can be a useful decision
support system for the managers of fishery. Similarly, the release point of ballast
waters and regulations for controlling the spread of obnoxious species like barnacles can
also be identified. This present work suggests the relevance of applying remote-sensing
and numerical model data as a surrogate for biological data sets in deriving scientific
conclusions for management of marine ecosystems.
 
Date 2011
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/10342/1/thesisgrinson.pdf
George, Grinson (2011) Fish larval transport in the coastal waters through ecological modelling. ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Goa University.