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Variability in Oil sardine and Indian mackerel fishery of southwest coast of India during 1991-2008: a statistical approach Essay Example

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Variability in Oil sardine and Indian mackerel fishery of southwest coast of India during 1991-2008: a statistical approach

Special efforts have been made to promote extensive and intensive inland fish farming, modernize coastal fisheries, and encourage deep-sea fishing through joint ventures. These efforts led to the significant increase in fishery. At present, India stands seventh place among fishing countries.The South Eastern Arabian Sea (SEAS) undergoes strong upwelling during the southwest monsoon period. The Malabar Coast falling under the domain of strong upwelling is the landing area of oil sardine and mackerel. They form the major support of Indian pelagic fisheries along the west coast of India (Madhupratap et al. Along the peninsular India 80-95% of the catch of oil sardine and mackerel is from the west coast and the commercial fishery of these species is restricted to 8°N-18°N. These fisheries are shallow water based, the usual depth of fishing confined to the foreshore area within 20-25m depth.Like other parts of the world’s oceans, this fishery exhibits dramatic fluctuations from year to year. The investigations have been held to relate this fishery to the variability to seawater temperature, salinity, rainfall, upwelling etc., but the success of these studies was limited. (Madhupratap et al., 1994; Jayaprakash, 2002; Krishnakumar and Bhat, 2008). Here the variability in landings of oil sardine and mackerel are investigated along the southwest coast of India (Fig. For this purpose landing data of these species for the period 1991-2008 has been used. To understand the variability in landings of these fishes “Trend Analysis” and “Time Series Analysis’ have been conducted. The statistical prediction has been validated using observed landing data. The dependence structure in the annual landings of oil sardine and mackerel are also examined.The quarterly landings of the two major pelagic species (oil sardine and mackerel) for Kerala, Karnataka and Goa representing the southwest coast as a whole are collected from the Central Marine Fisheries Research Institute (CMFRI) and used for the research. CMFRI has been following a suitable sampling design for estimating marine fish landings to arrive at species wise estimates since 1950. The landings are estimated by using a stratified multi-stage random sample design that takes into account landing centres, days and boat net combinations in fishing operations (Srinath et al. On the west coast, highest abundance of oil sardine and mackerel

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preview essay on Variability in Oil sardine and Indian mackerel fishery of southwest coast of India during 1991-2008: a statistical approach
  • Pages: 9 (2250 words)
  • Document Type: Essay
  • Subject: Environmental Studies
  • Level: Undergraduate
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