4,597 research outputs found
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
- тАж