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- W199058878 abstract "The Union Territory of Lakshadweep is situated in theArabian Sea about 200 to 400 km off the Kerala coast. Thisarchipelago consists of 36 islands and five s.ubmerged bankswith a total area of 32 sq. km .The islands lie between 08° 00 -12° 30' N latitude and 71 ° 00 - 74° 00 E longitude. Theseislands consist of coral formation built on submerged ridgeraising steeply from a depth of about 1500 to 4000 m in theArabian Sea. The Lakshadweep, Maldives and Chagosarchipelagos foon an uninterrupted chain of coral atolls andreefs on a submarine bank covering a distance of over 2000 km.Most of these islands have sandy beaches with gentle slope onthe lagoon side and on the seaward side there is a steep slopewith boulders, coral rocks, living corals and debris. Coralscannot grow very deep in the oceans and what is seen at presentdepicts millennia of interaction between the submarine bank,tectonic activity and the level of the oceans, particularly duringthe Pleistocene period (Jones, 1986).Coral reef ecosystems are the most diverse andcolourful of any communities with the most complexinterrelationship between species. Corals grow where the meansea temperature is at least 20 °C throughout the year, preferablymore than 23 °C. They also need clean sea water and are wlableto grow where rivers dilute the sea or bring in mud. Coral reefcommunities may be very old and their foonation is a result ofpersistent accumulation of calcareous deposits over longperiods, extending from hundred to thousands of years (Qasim,1998). Coral reefs are of three types: (I) Barrier reefs alongcontinents (2) Fringing reefs around islands (3) Atolls, brokenfringes of reef and islands around a central lagoon. The IndoPacific region is particularly rich in corals. The AustralianGreat Barrier Reef is an intermittent series of reefs stretchingover 1900 km along the coast of Queensland. Other coastalreefs lie off East Africa and in the Red Sea. The Pacific and theIndian Oceans have thousands of atolls. In the West Atlantic,coastal reefs extend 200 km. southwards from Yucatan andmany Caribbean islands are fringed with coral reefs. The coralsare coelenterate polyp animals which extent their tentacles atnight to feed on zooplankton washed over the reefs. Theirtissues house symbiotic green algae (zooxanthillae).Zooxanthillae and other algae living in or on their calcareousskeleton conduct photosynthesis in the sunlight. Many reefs arein trade wind belts, the windward side being exposed to waveaction, the leeward side being sheltered. Reef systems are oftenbioenergeticaly more or less self maintaining, completeecosystem in themselves, beautifully adapted to use, hoard orrecycle any inputs from the surroundings." @default.
- W199058878 created "2016-06-24" @default.
- W199058878 creator A5019173625 @default.
- W199058878 date "2000-01-01" @default.
- W199058878 modified "2023-09-26" @default.
- W199058878 title "Studies On Ecology, Chemical Constituents And Culture Of Marine Macroalgae Of Minicoy Island, Lakshadweep" @default.
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