Enhalus acoroides (L.f.) Royle fruits observed in Gulf of Mannar

Seagrass are angiospermous plants adapted to grow in marine environment. Seagrass meadows are the nursery ground for many commercially important shrimps, crabs and fishes. Its root mat adds stability to the sediments of coastal zone and the leaves help filter the water of suspended particles. There are 13 genera and about 52 species of seagrass distributed throughout the world

रामेश्वरम द्वीप के तटीय अवसादों की स्थिरता और नितलस्थ जीव

कृपया पूरा लेखा पढ

Hydrological conditions in seagrass beds in Palk Bay and Gulf of Mannar, southeast coast of India

Comparative analysis has been made on the water quality parameters in three seagrass sites, Sangumal and Farm pond in Palk Bay; Thonithurai and one non seagrass site - Kundhukaal point in the Gulf of Mannar from January 2006 to December 2007. The atmospheric temperature ranged from 24.8° to 35.3 °C, sea surface temperature from 25° to 35°C, pH from 7.44 to 8.44, dissolved oxygen from 1.0 ml to 5.9 ml l-1 and total suspended solids from 10.7 mg to 122 mg l-1 in the four sites. The maximum concentration of phosphate, silicate, nitrite and nitrate in the water were 1.22 μmol, 5.83 μmol, 0.63 μmol and 2.03 μmol l-1 respectively. Sangumal had the maximum input of nutrients especially during the northeast monsoon. Pearsons correlation coefficient showed significant positive correlation (ρ<0.01) of sea surface temperature with pH, salinity, dissolved oxygen and negative correlation with total suspended solids, nitrite and ammonia. Though ANOVA did not show significant difference in water quality parameter between sites with and without seagrass, highly significant difference (ρ<0.001) was observed seasonally in sea surface temperature, salinity, nitrite, ammonia, wind velocity, rainfall and number of rainy days, thereby influencing the growth of seagrass beds

Coastal sand dune and its importance in near shore marine ecosystem

The coastal region along with sandy dunes, have been used by man for different activities. The dunes have been utilized without understanding the dangerous effects, their disappearance can cause to the surrounding environment. Indiscriminate cutting of coastal vegetation and over–exploitation of beach sand for developmental works have resulted in erosion of vast coastal area. Sand dunes are very important systems which require careful planning and management

Environmental monitoring in Sea cage culture

Cage culture is a fast growing industry all over the world and demands good environmental practices to assure sustainability. The sustained development of coastal aquaculture has reached a good understanding with the environment, respecting it and undertaking actions that tend to diminish the possible impacts that may arise from this activity. In order to do so, measures are to be taken in production to avoid degrading the environment, whilst still being appropriate, economically viable and socially acceptable. In this sense, it has been considered necessary to develop some basic environmental strategies to assure the best site for the aquaculture purposes, avoiding possible confrontations with other coastal uses

Fishing methods in coral reef areas of the Gulf of Mannar

Fishing methods being practised in the reef areas of the Gulf of Mannar for finfishes are trawling, gillnetting, fishing by hooks and lines and traps. Out of these, the most important device is trawling by which the most diverse and the highest quantity of finfishes are being landed from coral reef areas in this region

Current status of biodiversity and health of the coral reef ecosystem of Palk Bay

The coral reefs in Palk Bay run parallel to the shore between longitudes 79°17’ E and 79°8’ E, at the latitude 9°17’ N. It lies in an east-west direction and is about 200 to 600 m away from the shore at different places at a depth of 1 to 5 m

खुले सागरों में स्थापित पिंजरों में कोबिया, पोम्पानो और ग्रूपर के अंडशावकों का पालन

कृपया पूरा लेखा पढ

Not Available

Not AvailableSeagrass are angiospermous plants adapted to grow in marine environment. Seagrass meadows are the nursery ground for many commercially important shrimps, crabs and fishes. Its root mat adds stability to the sediments of coastal zone and the leaves help filter the water of suspended particles. There are 13 genera and about 52 species of seagrass distributed throughout the world.Not Availabl

Not Available

Not AvailableThe coastal region along with sandy dunes, have been used by man for different activities. The dunes have been utilized without understanding the dangerous effects, their disappearance can cause to the surrounding environment. Indiscriminate cutting of coastal vegetation and over–exploitation of beach sand for developmental works have resulted in erosion of vast coastal area. Sand dunes are very important systems which require careful planning and management.Not Availabl