Feb 172012
 

Conservationists and government officials alike are hoping that the Ganges River and Irrawaddy dolphins won’t go the way of the dinosaur—or more aptly, the Yangtze River dolphin, which recently went extinct.

The Government of Bangladesh declares three new wildlife sanctuaries for Ganges River and Irrawaddy dolphins. A WCS collaborative study with the Bangladesh Forest Department helped pinpoint the locations of the new protected areas.

The Government of Bangladesh declared three new wildlife sanctuaries to help protect these last two remaining species of freshwater dolphins in Asia. The officials created the sanctuaries in the Sundarbans, the world’s largest mangrove ecosystem. WCS helped pinpoint the locations of the protected areas through conservation work.

Although there is no global population estimate for either species, both Ganges River and Irrawaddy dolphins have disappeared from major portions of their range. Conservationists hope the Sundarbans, still home to sufficient numbers of both species, will serve as a global safety net for preventing their extinction.

The three wildlife sanctuaries safeguard 19.4 miles of channels with a total area of 4.1 square miles. The locations and sizes of the sanctuaries in the Sundarbans were determined according to a study conducted by WCS and Bangladesh Forest Department and published in the journal Oryx in 2010. The study found that the habitat of Ganges River and Irrawaddy dolphins were clumped in waterways where human activities are most intense.

“Declaration of these Wildlife Sanctuaries is an essential first step in protecting Ganges River and Irrawaddy dolphins in Bangladesh,” said Brian D. Smith, Director of WCS’s Asian Freshwater and Coastal Cetacean Program, and first author of study. “As biological indicators of ecosystem-level impacts, freshwater dolphins can inform adaptive human-wildlife management to cope with climate change, suggesting a broader potential for conservation and sustainable development.”

The dolphins are threatened by various fatal entanglements in fishing gear and due to the depletion of their prey from the enormous bycatch of fish and crustaceans in fine-mesh “mosquito” nets used to catch fry for shrimp farming. A further risk to their survival is posed by increasing salinity and sedimentation caused by sea-level rise and changes in the availability of upstream freshwater flow.

Freshwater dolphins are among the most threatened wildlife on earth. Dam construction and unsustainable fisheries, among other human activities, highly impacts their habitat. In addition to conserving globally important populations of freshwater dolphins, the new wildlife sanctuaries in the Sundarbans will provide protection for threatened river terrapins, masked finfoot, and small-clawed otters.

Bangladesh has been recognized as a “hotspot” for dolphins, whales and porpoises. In April 2009, WCS announced the discovery of the world’s largest population of nearly 6,000 Irrawaddy dolphins in the country. A portion of this population shares habitat with the endangered Ganges River dolphin, whose range extends all the way upstream to the shadow of the Himalayas in Nepal.

Support for work on dolphins in the Sundarbans has been provided in part by the Bangladesh Academy of Sciences, Kerzner Marine Foundation, Ocean Park Conservation Foundation, Hong Kong (OPCFHK), and the Indo-Pacific Cetacean Research and Conservation Fund of the Australian Government.

This article was written and published by the Wildlife Conservation Society

Share on social media:

Facebooktwittergoogle_plusredditpinterestlinkedintumblrmail
Facebook Comments

Leave a Reply

avatar
wpDiscuz

Top-Viewed Posts Last 30 Days

  1. POLL: Should Finland’s 235 wolves be culled? [1641 Views]
  2. POLL: Should all tiger farms in China be closed down? [1621 Views]
  3. POLL: Should the Wildlife Trust’s campaign to slaughter grey squirrels be stopped? [1609 Views]
  4. POLL: Should Trump disband USDA Wildlife “Killing” Services? [1219 Views]
  5. POLL: Should more bear hunting licenses be issued? [1152 Views]
  6. Gray Squirrels versus Red Squirrels – The Facts [967 Views]
  7. POLL: Should Australia’s feral cats be culled? [824 Views]
  8. POLL: Could U.S. endangered species rules go extinct under Trump? [727 Views]
  9. Why do birds sing? [634 Views]
  10. An elk’s-eye view of migrating through Yellowstone [569 Views]

Top-Viewed Posts Last 12 Months

  1. White Killer Whale Adult Spotted for First Time in Wild [42056 Views]
  2. POLL: Should there be a worldwide ban on fur farms? [16800 Views]
  3. POLL: Should fur farming be banned in the European Union? [13853 Views]
  4. POLL: Should Congress disband Wildlife “Killing” Services? [11117 Views]
  5. POLL: Should driven grouse-shooting be banned? [8614 Views]
  6. POLL: Should grouse shooting on highland estates be banned? [8309 Views]
  7. POLL: Should the annual Canadian seal hunt be banned? [8116 Views]
  8. POLL: Should black bears be killed for Royal Guards’ fur caps? [8048 Views]
  9. POLL: Should China’s dog meat festival be banned? [7417 Views]
  10. Wildlife Photo Adventure in Costa Rica! [6115 Views]