Important tourist centres in and around Kerala

Cradled in the Western Ghats with the pleasant comfort of the cool hills, the Wild Life Sanctuary at Thekkedy is unique in India. It offers the tourist the the luxury of cruise on boats in the Periyar Lake and the thrill of watching a variety of wild animal

Studies on bacterial flora of Trivandrum coastal water

The bacterial flora of waste water from Trivandrum, was investigated to understand the rate of pollution by human pathogens. A total. of 43 bacterial strains were isolatd from 13 samples of water. Out of total isolates, 22 were obtained from Shankumughom Beach, 11 from Kowalam and 3 from Vizhinjam. The morphological and biochemical features of all strains were studied

Responsible fisheries - a prelude to the concept, context and praxis

The concept of Responsible Fisheries is synonymous with the FAO Code of Conduct for Responsible Fisheries (CCRF). CCRF is an international instrument for fisheries management which was developed and released by Food and Agriculture Organisation (FAO) functioning under the United Nations on 31 OCTOBER 1995 after a series of international deliberations that began in 1992. More than 160 countries, including India are signatories to this international instrument which is considered as a landmark document symbolizing the international consensus achieved on the necessity for providing guidelines to ensure sustainable utilization of fisheries resources of the world. The most salient feature of this global instrument is its voluntary nature. The Code is often referred to as the Bible of Fisheries Management

Effect of trace elements on the rate of carbon production in marine photyplankton at different temperature

The alteration ih trace metal (Cu. Mu and Zn) toxicity was assessed in terms of rate of carbon production at different temperature in two unicellular algae Synechocystis salina, Wislouch and Isochrysis galbana Parke. m e rate of carbon production was maximum at lS°C for S. salina and at 30°C for I. galbnna. Metal toxicity increased at higher temperature (40°C) by inhibiting carbon production to a larger extent

Effect of copper on the ultrastructure Of marine phytoplankton

Electron microscopy technique was used to study the copper induced ultrastructural changes in the blue green alga, Synechocyslis salina. Wislouch and golden yellow flagellate /sochrysis ga/bana Parke. The blue green alga exhibited significant deterioration in the cell's internal organisation. Presence of membrane whorls. disorganisation of cell envelop. Photosynthetic lamelleae at certain regions of the cell, reduction in cellsize increase in number of polyhedral bodies and absence of lipid inclusion was observed. Drastic change was not noticed in the golden yellow flagellate except for the presence of enlarged vacuoles and more number of osmophilic bodies. Toxicity and detoxification mechanisms are discussed and the utili zation of electron microscopic analysis is established in the studies of metal toxioity at the cellular leve

Growth characteristics of certain estuarine phytoplankters

The growth constants, mean generation time, chlorophyll in relation to . cell numbers and 4 uptake have been studied in a few unialgal cultures of selected phytoplankters isolated from Cochin backwaters. Highest growth constant and lowest mean generation time are obtained during the exponential growth phase. The changes taking place in the growth kinetics on varying. concentrations of essential nutrients have also been incorporated

A comparison of values of organic production obtained from oxygen and C<SUP>14</SUP> methods

Study of marine photosynthesis has been one of the main concerns of marine biological investigations during recent years. With the introduction of radioactive carbon (C14) by Steemann Nielsen (1952) in the measurement of organic production in the sea, this branch of investigation has received considerable fillip. The great sensitivity of this technique has revealed several complex problems regarding factors influencing plant production

Note on the organic production in the inshore waters of the Gulf of Mannar

Although considerable data are available on the standing crop of plankton, practically no information is available on the daily production of organic matter in our waters and there fore investigations were started in 1957, with ' a view to measuring the magnitude of production of organic matter by the plankton alga and its fluctuations