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WETLANDS OF INDIA

INTRODUCTION

What are wetlands?

  • A wetland is a place where the land is covered by water, either salt, fresh or somewhere in between.

  • Wetlands must have one or more of the following three attributes:

1) at least periodically, the land supports predominantly Hydrophytes

2) the substrate is predominantly undrained hydric soil

3) the substrate is saturated with water or covered by shallow water at some time during the growing season of each year.

FAMOUS WETLANDS

FAMOUS

In India, currently 46 wetlands, with a surface area of over a million hectares are designated as wetlands of international importance under the Ramsar Convention.

SUNDERBANS

Sunderbans

  • Sunderban Wetland is located within the largest mangrove forest in the world.

  • Encompasses hundreds of islands and a maze of rivers, rivulets and creeks.

  • Lies on the delta of the River Ganges and Brahmaputra on the Bay of Bengal in India.

CHILIKA LAKE

Chilika lake

  • Chilika is the largest brackish water lake in Asia and also the second largest lake in the world.

  • Chilika is an integral part of the culture of coastal Odisha.

  • It is one of the hotspot of biodiversity in the country, and some rare, vulnerable and endangered species listed in the IUCN Red List of threatened Animals inhabit in the lagoon for atleast part of their life cycle.

EAST CALCUTTA WETLAND

East Calcutta

  • The East Calcutta Wetlands, are a complex of natural and human-made wetlands lying east of the city of Kolkata, of West Bengal in India.

  • The wetlands cover 125 square kilometers and include salt marshes, agricultural fields, sewage farms and settling ponds.

  • The wetlands are also used to treat Kolkata's sewage, and the nutrients contained in the waste water sustain fish farms and agriculture.

VEMBANAD KOL WETLAND

  • The largest brackish, humid tropical wetland ecosystem on the southwest coast of India.

  • It is fed by 10 rivers and typical of large estuarine systems on the western coast.

  • It is renowned for its clams and supporting the third largest waterfowl population in India during the winter months.

  • It is located in the Kottayam district of Kerala.

Vembanad-Kol

HOKERA WETLAND

Hokera

  • The Hokera is a wetland conservation area in Zainakote near Srinagar in the Indian union territory of Jammu and Kashmir.

  • The wetland also acts as an absorption basin for floodwaters.

  • It serves as an important staging ground for medium and long distance migratory shorebirds, geese, cranes, ducks and other species that breed in the northern latitudes of Siberia and Central Asia.

IMPORTANCE

IMPORTANCE

  • Wetlands ecosystem are vital parts of hydrological cycle, highly productive, support rich biodiversity and provide a wide range of ecosystem services

  • Wetlands contribute to the national and local economies by producing resources, enabling recreational activities and providing other benefits, such as pollution control and flood protection

WATER

Improve water quality

Water

Reduce coastal storm damage.

Increases the water supply.

LIVELIHOOD

Several people depend on wetlands for their livelihood as well as for food and water.

Some wetlands also play a role in combating the impacts of climate change like floods and extreme weather events.

Livelihood

DESTRUCTION

HOW ARE WETLANDS DESTROYED?

  • Unrestricted dumping of sewage and toxic chemicals from industries has polluted many freshwater wetlands.

  • Increased atmospheric carbon dioxide concentration; and sea level rise could also affect wetlands.

  • Also by reclamation and degradation through drainage,landfill and pollution.

RAMSAR WETLAND SITES

RAMSAR SITES

  • The Ramsar Convention is an international treaty for the conservation and sustainable utilization of wetlands, recognizing the fundamental ecological functions of wetlands and their economic, cultural, scientific, and recreational value.

  • There are approximately 46 Ramsar wetland sites in India and over 2,400 around the world.

  • It provides for national action and international cooperation regarding the conservation of wetlands, and wise sustainable use of their resources.

  • The international convention which forms the basis for their identification is commonly referred to as the "Ramsar Convention" after the city in Iran where the convention was signed in 1971.

CONSERVATION

How do you think we can conserve wetlands?

CONSERVATION

For conserving wetlands:

  • Planting native plants-

Native plants tend to resist diseases better, which means little to no pesticides or fertilizers are needed for them to thrive.

  • Water purification and detoxification of wastes
  • Stormwater supplies wetlands with the water they need to survive-

That’s why it is important to keep stormwater clean, not for the wetlands that may be on your property but also for any wetlands located downstream.

Thank you

Presentation team-

Ponn Oviyaa S

Harshini Dayanita

Priya Balakrishnan

Speakers-

Krishithikaa

Ponn Oviyaa S

Ritik

Raunaq

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