Impact of Thermal Effluents on seaweed bed of Tuticorin Bay

The Joint Group of Experts on the Scientific Aspects of Marine Pollution (GESAMP) of FAO defines marine pollution as “the introduction by man, directly or indirectly of substances or energy into marine environment including estuaries which resuits in such deleterious effects as harm to living resources, hazards to human health, hindrance to marine activities including fishing, impairment of quality for use of seawater and reduction of amenities". Thermal (heat) is one of the seven m ajor categories of environmental pollutant. Thermal pollution is “any change in natural water temperature that adversely affects the aquatic environment". Thermal power plant may contribute significantly towards economic growth but they may bring associated ills of environmental pollution. The largest single industrial use of water is for cooling purposes and vast quantities of water heated in this way are discharged into natural bodies of water. The main sources of thermal effluents from thermal power stations are; cooling water, wastewater from water treatment plants and condenser cleaners, wastewater contaminated with petroleum products sucii as oil and grease, water from hydraulic ash disposal system and water collected inside the territory of the power stations. Therm al pollution due to cooling water, wastewater and fly ash slurry discharges are bound to have detrimental effects on the hydrography of the receiving water

समुद्री घास परिरक्षण

कृपया पूरा लेख पढे

Alagal bloom and mass mortality of fishes and mussels along Kozhikode coast

Three algal blooms were found during the month of September 2002 in Kozhikode. Mass mortality of fishes and mussels occurred due to algal bloom. Massive blooming results in sudden depletion of oxygen which caused the death of fishes and mussels

पिंजरा मछ्ली पालन केलिए प्लवकी खाद्य का निर्माण

कृपया पूरा लेखा पढ

गुजरात के सूत्रपादा और दिऊ के घोघला में समुद्री पिंजरों में शूली महाचिंगट पानुलिरस पोलिफागस का पालन

Sea cage culture of spiny lobster Panulirus polyfagus at Sutrapada, Gujarat and Di

High yield of Acanthophora spicifera from culture at Minicoy lagoon, Lakshadweep

Culture of economicaly Important seawetejls is carried out along the Indian coast for the last three decades. Gracilaria edulis. G.crassa, Gelidiella acerosa. Acanthophora spicifera. Hypnia musciformis and H. valentia are the Important species selected for culture hy CMFRI and Marine Algal Research Station of CSMCRI at Mandaparn; In the present study Acanthophora spicifera was selected to understand its production potential in culture at Minicoy lagoon, Lakshadweep

Current trends and Prospects of Seaweed Farming in India

The Seaweeds are macrophytic algae, a primitive type of plants lacking true roots, stems and leaves. The word seaweed gives the wrong impression that it is a useless plant. Seaweeds are wonder plants of the sea and highly useful plants. Seaweeds grow in the shallow waters. Root system and conducting tissues like land plants are absent in seaweeds. Most of them have hold-fast for attachment and some drift loose in the sea. Four groups of seaweeds are recognized according to their pigments that absorb light of particular wave lengths and give them their colours of green, blue, brown and red. Most seaweed belongs to one of three divisions - the Chlorophyta (green algae), the Phaeophyta (brown algae) and the Rhodophyta (red algae). There are about 900 species of green seaweed, 4000 red species and 1500 brown species found in nature. The greatest variety of red seaweeds is found in subtropical and tropical waters, while brown seaweeds are more common in cooler, temperate waters. Economic importance Some 221 species of seaweed are utilized commercially. Of these, about 145 species are used for food and 110 species for phycocolloid production

पिंजरों में मछली पालन की भौगोलिक स्थिति – एक अवलोकन

कृपया पूरा लेखा पढ

Studies on the effects of thermal effluents on the physiology of selected seaweeds

The Joint Group of Experts on the Scientific Aspects of Marine Pollution (GESAMP) defines marine pollution as "the introduction by man , directly or indirectly of substance or energy into the marine environment including estuaries which results in such deleterious effects as harm to living resources, hazards to human health, hindrance to marine activities including fishing, impairment of quality for use of seawater and reduction of amenities" (GESAMP, 1984). Thermal heat) is one of the seven major categories of environental pollutant . Thermal pollution is any change in natural water temperature that adversely affects the aquatic environ.ent ". Thermal power plants may contribute significantly towards economic growth but they may bring associated ills of environmental pollution. The largest Single industrial use of water is for cooling purposes (Cairns, 1956) and vast quantities of water heated in this way are discharged into natural bodies of water. The main sources of thermal effluents from thermal power stations are; cooling water, waste water from water treatment plants and condenser cleaners, waste water contaminated with petroleum products such as oil and grease, water from hydraulic ash disposal system and water collected inside the territory of the power stations (Sarin, 1988). Thermal pollution due to cooling water, waste water and fly ash slurry discharges are bound to have detrimental effects on the hydrography of the receiving waters

Farming of Hypnea valentiae (Turner) Montagne at Minicoy Lagoon (Lakshadweep)

The red alga Hpea valentiae (Turn.) Mont. is one of the carrageenan producing seaweeds. Experiment was canied out at Minicoy Lagoon of Lakshadweep during 1998 to fmd out the feasibility of farming of H. valentiae. Two sites were selected in the intertidal zone of Minicoy lagoon, namely South end and Fisheries Jetty and farming was carried out in three seasons @re monsoon, monsoon and post monsoon). Single line bottom coir rope method was adopted for farming. The vegetative fragments of H. valentiae collected from wild were inserted between the twists of long coir ropes. Both ends of the ropes were tied to the coral stones and introduced in the intertidal waters of the lagoon. During the first harvest maximum yield of 6 fold increase was obtained in 37 days and in the second harvest during monsoon months 25 fold increase was recorded in 40 days. Large scale farming of H. valentiae without causing any damage to the lagoon ecosystem by adopting single bottom coir rope method may be taken up by the fIshmen during the lean fishing season