Spatial and temporal patterns of demersal fish distribution in the northwest coast of India : a study using Geographic Information System (GIS)


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Authors

  • John J Selvaraj Central Institute of Fisheries Education (CIFE), Mumbai - 400 061, India
  • R S Biradar Central Institute of Fisheries Education (CIFE), Mumbai - 400 061, India
  • V S Somavanshi Fishery Survey of India (FSI), Mumbai - 400 001, India

Abstract

This study illustrates a Geographic Information System (GIS) developed to analyze and visualize
spatio-temporal patterns of demersal fish distribution in the northwest coast of India, extending
between 17045’ and 23000’ N. Main functions of this GIS are catch and effort estimation and
visualisation of their spatio-temporal variation. Catch per unit effort (CPUE) of threadfin breams
(Nemipterus spp.), carangids (Decapterus spp.), lizardfish (Saurida spp.), catfish (Tachysurus
spp.) and dhoma (Johnius spp. and Otolithes spp.) were mapped seasonally by pooling data from
the year 1997 to 2000. Maps displaying CPUE distribution were produced for three seasons; premonsoon,
monsoon and post-monsoon. Spatial maps indicated occurrence of these five species
predominantly in deeper waters of the Gujarat coast. GIS is found to be useful in visualizing
spatial and temporal distribution and abundance pattern of these key species.

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Author Biographies

  • John J Selvaraj, Central Institute of Fisheries Education (CIFE), Mumbai - 400 061, India
    Central Institute of Fisheries Education (CIFE), Mumbai - 400 061, India
  • R S Biradar, Central Institute of Fisheries Education (CIFE), Mumbai - 400 061, India
    Central Institute of Fisheries Education (CIFE), Mumbai - 400 061, India
  • V S Somavanshi, Fishery Survey of India (FSI), Mumbai - 400 001, India
    Fishery Survey of India (FSI), Mumbai - 400 001, India

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Issue

Vol. 54 No. 3 (2007)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Selvaraj, J. J., Biradar, R. S., & Somavanshi, V. S. (2011). Spatial and temporal patterns of demersal fish distribution in the northwest coast of India : a study using Geographic Information System (GIS). Indian Journal of Fisheries, 54(3), 243-249. https://epubs.icar.org.in/index.php/IJF/article/view/6933