Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Download
NEWS- Coral Reefs
1,582 plays

More
Coral Reefs.

Lohit Kumar Yadav
IRSME. Graduated in Mechanical engineering. Secured AIR 1 in ESE 2017. Believes in Quality Education for all.

U
Unacademy user
which chapters of bipin chandra should we read ma'am... Or we should go through entire book?
And sir this much of information is sufficient for ESE or I need some more work to do for GS like reading newspapers and watching other videos ?
Sir this topic will also applicable for ESE 2019 ?
  1. News- Coral Reefs Lohit K. Yadav


  2. News Source: The Hindu . Research on floating Shield' made of calcium carbonate that has been shown to protect the reef from the effects of bleaching Coral bleaching occurs due to many reasons and one of that is WARMING SEA TEMPERATURES Threat: Predatory coral eating CROWN OF THORN STARFISH .


  3. What are corals Are two layered invertebrates that live in groups Corals are made up of tiny individuals called POLYPS Symbiotic association of polyps and single celled microalgae, Z0OXANTHELLAE. . Coral secretes a limestone skeleton around itself, as it grows, it divides, forming colonies and eventuallV, a coral reef.


  4. What are coral reefs? Coral reefs are the skeletons of Stony coral polyps cemented together. As these corals grow and die, they leave behind their calcium carbonate skeletons On these skeletons, other corals grow Walls of coral begin to form and massive walls of Rock are formed Types of coral . o Fringing reefs o Barrier reef o Atolls


  5. Types of corals 1) Fringing reefs: . Grow in shallow water Closely border the coastline or are separated from it by a narrow stretch of water 2) Barrier reefs: Grow parallel to the coast, but are separated from Land by a lagoon Can grow in fairly deep wate Great barrier reef of Australia extends about 2000 km parallel to north Eastern coast e .


  6. 3) Atolls . They surround a central lagoon. . Grow surrounding an island which then sinks relative to sea leve o Found in Maldives


  7. Coral reefs in India The regions in India are: 1. 2. 3. 4. 5. Gulf of Mannar Palk bay Gulf of Kutch Andaman and Nicobar Islands Lakshwadee


  8. Coral Reefs in India India Arabian Sea n Bay of Bengal Palk Bay


  9. Why coral reefs are important? 1) Provisioning services Provides support to human life and livelihood Economically also important Several species have medicinal value:s 2) Regulating services ct the shoreline and reduce flooding Prote They serve to reduce huge costs involved with d to extreme weather events estruct ion and displacement due .


  10. 3) Supporting services Essential part of land accr They are extremely diverse Have high primary productivity . etion . 4). Cultural Services . Have intrinsie, aesthetic and recreational values


  11. Coral Triangle . Coral reefs are called the rainforests of the seas, then coral triangle will be Amazon Have more marine species than anywhere else in the world . Passes through six countries: Philippines, Indonesia, Malaysia, Papua Nevw Guinea, Solomon islands and Timor Lieste World coral triangle day is celebrated on 9th June .