Three new wildlife sanctuaries - Bangladesh

The government of Bangladesh has created three new wildlife sanctuaries for the endangered Ganges River and Irrawaddy freshwater dolphins, the last two remaining species of freshwater dolphins in Asia.


Working with the New York-based Wildlife Conservation Society (WCS) to identify key habitat for the dolphins, Bangladesh officials created the sanctuaries in the Sundarbans, the world’s largest mangrove ecosystem. The three sanctuaries will protect the dolphins in 19.4 miles of mangrove channels with a total of 4.1 square miles — a small area that WCS biologists characterized as the start of a wider effort to save the dolphins. No precise numbers exist on the number of remaining Ganges River and Irrawaddy dolphins, although in 2009 WCS scientists discovered a population of roughly 6,000 Irrawaddy dolphins. The two dolphin species have suffered severe population declines because of fatal entanglements in fishing gear and the depletion of their prey as huge amounts of fish and crustaceans are caught as by-catch in fine-mesh “mosquito” nets used to catch fry for shrimp farming. A third Asian species of freshwater dolphin, the Yangtze River dolphin in China, recently went extinct. 


http://e360.yale.edu/digest/endangered_freshwater_dolphins_to_be_protected_by_bangladesh_sanctuaries/3336/

Rare Irrawaddy dolphins found in Indonesian waters

Jakarta, Indonesia - Vulnerable Irrawaddy dolphins (Orcaella brevirostris) have been discovered for the first time in West Kalimantan, a part of Indonesian Borneo that best known for its dense tropical forests and rich wildlife.  

WWF-Indonesia and the Regional Office for Marine, Coastal & Resources Management Pontianak  (BPSPL) found the rare dolphins while conduicting a study in the narrow straits and coastal waters of the Kubu Raya and Kayong Utara regencies in the western part of Borneo.
“The presence of Irrawaddy dolphins in West Kalimantan waters was previously unknown, so we are excited with the results of this preliminary study and hope this will help reveal information on the  population and distribution of this unique species,” said Albertus Tjiu, WWF-Indonesia’s Conservation Biologist, and one of the study’s lead scientists. 

The team also encountered a group of Indo-Pacific Humpback dolphins (Sousa chinensis) in the area,  showing strong scientific evidence of the rich biodiversity in Kalimantan waters, which originate in the highlands of the Heart of Borneo.  

Conservation challenges
“The results of this study indicate the importance of protecting the dolphins’ habitat, from the origins of the rivers in the Heart of Borneo, to the  lower rivers of the island, including waterways of Batu Ampar mangroves and nypah forests, the narrow straits and the coastal areas of Kubu Raya, West Kalimantan,” Albertus Tjiu said.

But he also cautions that the continued growth of charcoal production in West Kalimantan is threatening the area’s mangrove forests, one of the dolphins key habitats. Over one hundred small and medium-sized charcoal producers are now operating in Kubu Raya, and additional threats from increased boat traffic in waterways and forest conversion are posing further challenges to the growth of the species.
 
“WWF calls on all companies that operate in West Kalimantan waters to apply sustainable practices in their business, and with regards to this dolphin study, to carefully look at their wood supply to help avoid the destruction of mangrove forests,” said Albertus Tjiu. 

How many dolphins?
With a global population of around 6000 individuals, Irrawaddy dolphins are found in many of Southeast Asia’s estuaries and mangrove areas. Close to 5,800 of the vulnerable dolphins live in the costal waters of Bangladesh along the Bay of Bengal, and the nearby Sunderbarns mangove forests. The remaining population is scattered throughout Southeast Asia and can be found in Thailand, Cambodia, Indonesia, the Philippines and the northeastern coast of Australia.  

Irrawaddy dolphins are classified as vulnerable by the IUCN, but in some areas - including the Mekong River, the Ayeyawardi River and the Mahakam River in East Kalimantan - the species is listed as critically endangered. 

 “Kubu Raya and Kayong Utara waters are located downstream from the Heart of Borneo in West Kalimantan. Conservation of forests in the Heart of Borneo is considered critical to ensure the proper protection of the Irrawaddy dolphins fresh water habitat in the lower reaches of the river,” said Tri Agung Rooswiadji, WWF-Indonesia’s Fresh Water Conservation Program Coordinator. “As a unique species that live in fresh, salt and brackish waters, this mammal serves as an indicator of the healthiness of the water ecosystem in the area,” Tri Agung added. 

“The dolphin survey we conducted in Kubu Raya and Kayong Utara waters is only a preliminary survey, and we are hoping to continue studying the species in other rivers in the upper parts such as in Kapuas, Sejenuh and Mendawa river, “ said Tri Agung. “With comprehensive information on the population and habitat of the dolphin, it is expected that the future policy on the protection of the species can be identified and implemented,” he added. 

Kris Handoko, Head of Conservation at the Regional Office for Marine, Coastal & Resources Management Pontianak  (BPSPL) said, “We are very supportive of this study. We will continue working with WWF-Indonesia and other relevant partners on monitoring the dolphins as well as identify other actions to enhance the species protection.”
http://wwf.panda.org/wwf_news/?203431/Rare-Irrawaddy-dolphins-found-Indonesian-waters

Irrawaddy dolphins sighted

KIEN GIANG — A school of about 20 Irrawaddy dolphins has been sighted around the Ba Lua Archipelago in the protected Kien Giang Biosphere Reserve.

The population was discovered by a group of six researchers from the Centre for Biodiversity and Development run by the Institute of Tropical Biology and HCM City University of Natural Sciences.

Vu Long, one of the researchers, said the number of dolphins sighted was larger than schools in the Malampaya Channel in the Philippines and the Mekong River, where populations of between seven and 10 were sighted.

Little research on the Irrawaddy dolphin has been conducted in Viet Nam and they are not listed in the country's Red Book of endangered species, Long said.

On Thursday, the researchers will travel to Thailand to work with the International Union for Conservation of Nature (IUCN) to work out a detailed plant to protect the dolphins, he said.

In the meantime, researchers have joined hands with local fishermen to track the population of dolphins in the Ba Lua Archipelago.

Five populations of Irrawaddy dolphin, whose scientific name is Orcaella brevirotis, were thought to be living in Vietnamese waters.

The IUCN lists the dolphin in its Red book of vulnerable species. — VNS

http://vietnamnews.vnagency.com.vn/Environment/219504/irrawaddy-dolphins-sighted.html