Application of satellite data for marine Fishery forecasting

The sharing of the pelagic and demersal common property fishery resources of the coastal waters has created considerable tensions, law and order problems and conflicts among various fishing sectors in the recent past. Fishes are known to react to changes in environmental conditions and migrate to areas where favourable conditions in terms of seawater temperature, dissolved oxygen and salinity exist. Monitoring of these parameters in space and time is time consuming and prohibitively expensive. Indirect method of monitoring selected parameters such as sea surface temperature and phytoplankton pigments is found very ideal in view of its high repetivity and spatial coverag

Present Status of MaricuIture in India

Aquaculture, the farming of aquatic animals and plants has been the world's fastest food production system for the past decade with an average compound growth rate of 9.6% per year since 1984. On the basis of the rapid growth of the aquaculture sector and recent stagnation of landings from capture fisheries, aquaculture is seen by many as a potential source of hope to meet the current and future needs of a growing population in search of food

മത്സ്യബന്ധന മേഖലയിലെ പ്രവചനസാധ്യതകള്‍ (Potential fishing zones in the marine environment)

As in the case of terrestrial animals, the marine fauna including fish also respond, in varying degrees, to changes in the environmental conditions. The physical parameters such as sea water temperature, density, hydrostatic pressure, horizontal and vertical movements of water masses, the intensity of solar radiation and chemical parameters including the saltiness of seawater, dissolved gases and biological factors such as the availability of food and occurrence of predators decide the occurrence, distribution, abundance, reproduction and mortality of individual species in space and time

Oceanographic aspects of Lakshadweep waters in relation to skipjack tuna fisheries

The variations noticed on important oceanographic parameters such as surface currents, seawater temperature. salinity and dissolved oxygen content of waters around Lakshadweep group of islands are discussed in brief. An attempt is made to correlate selected parameters with the occurrence/abundance of Skipjack tuna catches in and around the islands. It is observed that apart trom factors such as sea water, temperature and salinity, the resultant effect of the phenomenon of 'upwelling ' mainly caused by diverging current systems contribute towards concentration of Skipjack tuna in certain localities. It may be possible that fishing areas for Skipjack tuna could be predicted sufticiently in advance by monitoring the formation and shifting of divergence zones around these islands during the period, November - March, the season for the Skipjack tuna fishery. The possibilities of utilising Satellite Remote Sensing data to locate thermal boundaries, resulting out of divergence, is also suggested

Indian marine capture fisheries - present trends and future possibilities

In India, the last few decades’ fisheries research together with technological advancement in the harvest and post harvest scenario has accelerated the processes of transformation of a subsistence oriented traditional sector marine capture fisheries into a market oriented multi-crore industrial sector activity with considerable strength and capabilities in essential infrastructures

Environmental monitoring and forecasting services for Indian fisheries possibilities and prospects

It is estimated that by 1985 it would become necessary te step up the present world fish production of 80 million tonnes to about 145 million tannes to meet the minimum requirements of fish for the world popu latio

Impact on oceanographic parameters - Winter School on Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008

The behavior of a fish shoal is controlled by variations observed on important environmental parameters such as seawater temperature, salinity, dissolved oxygen concentrations, currents, presence of phytoplankton, zooplankton etc

Mixing processes in the sea in relation to fisheries

The productivity of a p articular area of the sea is dependent on the replenishment of the waters by nutrients either along the vertical or horizontal plan

Physical characteristics of the coastal waters off the south-west coast of India with an attempt to study the possible relationship with sardine mackerel and anchovy fisheries

The present study is aimed at observing the variations, in space and time, of see of the important hydrographic parameters such as sea water temperature, salinity and Resolved oxygen within the coastal waters along the south-west coast of India between Ratnagiri (17°OO*N,73°20'E) and cape Comorin ( 8°10'N,77°30*E). Specific data relating to the process of upwelling and sinking was collected mainly to evaluate the extent and intensity of the vertical mixing processes active in the area under study. The study also attempted possible correlations between the observed parameters and the occurrence and migrations of some of the major pelagic fishery resources such as sardine,mackerel and anchovy in the area under stud

Further studies on the process of coastal upwelling along the south west coast of India - possible correlations with biological productivity

An attempt is made to study the possible relationship between the process of upwelling and zooplankton biomass in the shelf weters along the south west coast of India between Cape comorin and Ratnagiri based on oceanographic and Zooplankton data collected by the erstwhile FAO/UNDP Pelagic Fishery Project,Cochin between 1973 and 1978. Different factors such as the depth from which the bottom waters are induced upwards during the process of upwelling,the depth to which the bottom waters are drawn, vertical velocity of upwelling and the resultant zooplankton productivity were considered while arriving at the deductions. Except for nutrients and phytoplankton productivity, for which simultaneous data is lacking, all the major factors were taken into consideration before cocluding- xon positive/negative correlation