About 28,000 people of Keti Bunder may suffer a major displacement in the next 10 years as the sea is fast eroding their land. With the construction of dams and barrages upstream and stoppage of water downstream, the pace of sea intrusion has increased over the decades. The area has become highly vulnerable to cyclones and tsunamis as mangroves that serve as natural barriers to these calamities are being uprooted at an alarming rate. These facts were highlighted during a tour of journalists to the deltoid region. The visit was organised by World Wildlife Fund (WWF), Karachi.

A week after fishermen complained of oil wastes polluting the Mahul creek and after the RPF police instructed Bharat Petroleum Corporation Ltd (BPCL) officials

Amid pouring rain, about 500 residents of Versova

The coastal and marine nitrogen cycle occupies a complex, central role within the biogeochemical cycles. Human interventions in the earth system have risen to unprecedented levels, strongly influencing the global nitrogen cycle. The nitrogen cycle in the open ocean compared to coastal ecosystems appears to have remained unharmed, although recent observations have shown increasing anthropogenic influence.

Litter production and decomposition are important in nutrient cycling and detritus based food chain. Litter production in mangrove varies widely with species, forest type, stand age, geographical location and environmental parameters.

Mangrove forests are highly productive but globally threatened coastal ecosystems, whose role in the carbon budget of the coastal zone has long been debated. Here we provide a comprehensive synthesis of the available data on carbon fluxes in mangrove ecosystems.

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Mangrove forests are extraordinarily diverse coastal communities anchored by salt-tolerant plants along certain tropical seacoasts. Their distinctive aerial roots help to trap sediment, prevent shoreline erosion, and provide habitat for a variety of sea life. Their unique mode of viviparous reproduction (producing seeds that germinate before becoming detached from the parent plant) allows for the rapid dissemination of viable young plants. Mangrove swamps or forests are among the most productive wetlands on the planet.

The ministry of environment and forests (MoEF) has just two day ago given its in principle clearance for the Rs 4,000-crore Navi Mumbai international airport. MoEF, in March, had deferred environment clearance for the project on the grounds that the airport would involve reclamation of low-lying areas in an ecologically fragile zone as well as destruction of several hectares of mangroves.

Large-scale destruction of mangroves contributed heavily to the damage inflicted by cyclone Nargis in Myanmar last week, says the UN Food and Agriculture Organization (FAO). Myanmar, home to the eighth largest mangrove area in the world, has lost large swathes of mangroves over the last four decades. FAO estimates from 2005 put the loss at around 70,000 hectares between 1972 and 2005, but 2008 estimates suggest this could be much higher.

Just north of Mumbai, along the creek at Kopar Khairne in Navi Mumbai is the story of how a fragile ecosystem is being systematically destroyed. Despite a High Court ruling against cutting of mangroves, amid a continuing real estate boom in Navi Mumbai, there is clear evidence of debris being dumped on what was once a lush mangrove forest here.

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