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Forest restoration set to conserve grey-shanked doucs in Quảng Nam

08 August 2019 | 09:33:00 PM

Quang Nam is seeking sustainable solutions for the conservation of critically endangered primates living in a primary forest, while creating stable livelihoods for log farmers in Tam Mỹ Tây Commune – which is home to 50 endangered grey-shanked douc langurs.

 



A gray-shanked douc langur on a tree in Hòn Dồ Mountain in Núi Thành district of Quảng Nam Province. A population of 50 langurs is in danger of extinction due to the expansion of log farms and human activities. — VNS Photo Ái Tâm


An 120ha-area of acacia log farms provides significant income for 40 households living in the commune, but the development of log farms has pushed the endangered primates to the brink of extinction.


A plan to transform the livelihoods of farmers while promoting eco-tour development, reforestation and gardening has been developed by the local authorities as a measure to restrict human activities around the habitat of the endangered primates.

Log farmers would suffer losses if their acacia farms are located in the area of strict conservation for the endangered langurs.

This means that acacia farms will be gradually replaced by native trees or timber that provide food and shelter for the animals.

Võ Ngọc Danh, 56, from Đồng Cố village, said he could earn VNĐ500 million (US$23,000) from his 10ha acacia log farm after a four-year period, and a livestock and fruit farm added to his coffers.

“Acacia log farms provide major incomes for villagers living near the mountains of Hòn Dồ, Hòn Ông, Dương Bông and Dương Bản Lầu. The langurs – which were found living in the natural forest area in 1997 – are safe living with the community,” Danh said.

“We support the local conservation plan for the endangered species, but we need to adapt to other trades to make a living,” he said.

Urgent

Vice chairman of Việt Nam Zoological Association, professor Đặng Vũ Khôi said small primary forests must be expanded to offer food and safe habitat for the langurs.

“It’s very urgent. The species will die out soon due to the rapid development of log farms and harmful human activities in the area,” Khôi said.

“The 30ha natural forest will not be enough for the endangered langurs to reproduce.”

Professor Dr Đặng Huy Huỳnh said the urgent conservation of the grey-shanked douc langurs and expansion of forests would help Quảng Nam Province set up a unique eco-tour and ecological education and research centre in Vietnam.

He said the primate is now only seen in central Vietnam, and its population is roughly 1,000 individuals.

In a recent survey, at least four herds with a total of 50 langurs were recorded living in the 25ha primary forest.

Trần Hữu Vỹ, director of GreenViet, said the grey-shanked douc langur species was isolated by surrounding acacia log farms.

“Log farms separated the green corridor for the langur families for moving for food in natural forest – which supplies 75 per cent of food for the primates,” Vỹ said.

“The langurs could only live in their ‘small houses’ (natural forest from 50m to 150m wide) on the top of mountains,” he said.

He added that the langurs could not swing through log farms to approach the protective forest of Phú Ninh at 10km away.

Dr Hà Thăng Long, head of the representative office of the Frankfurt Zoological Society in Việt Nam, who is an authority on grey-shanked douc langur studies, suggested the 25ha area of natural forest should be expanded from Tam Mỹ Tây Commune to the riverhead forest of Phú Ninh and Trà Bồng in neighbouring Quảng Ngãi Province to create a safe corridor for langurs.

He said it naturally helps build up a larger conservation zone for the endangered primates and forest in combination with a rich biodiversity and research centre of langurs.

Long said around 1,000 grey-shanked doucs were recorded living in forests of five provinces, including Quảng Nam, Quảng Ngãi, Bình Định, Kon Tum and Gia Lai. Gia Lai’s National Kon Ka Kinh Park preserves the largest number of langurs.

He said the grey-shanked douc langur – which is listed on the International Union for Conservation of Nature red list as one of the world’s 25 critically endangered primates – could be seen in Việt Nam.

An area of 150ha on forest restoration in the area would help establish a conservation site of the langur population.

Jeroen van der Horst, an expert from the German International Co-operation Development (GIZ), said urgent protection is an effective way in saving 50 individuals of the douc-population in the fragmented area.

“The natural habitat of 150ha should be the core zone where there is enough food for the doucs and where they can feel at ease so they can produce a new generation,” Horst said.

“The community and the responsible government administrations should come to an agreement where the acacia plantations in the core zone are ‘given back’ to nature in order to restore the douc habitat. So, the legal owners should be compensated in a good way and the government administration should ensure a long-term conservation of this area,” he said.

He said the right forest restoration model for this area is very important in setting up a good habitat for the douc population in the near future.

He suggested that planting native trees that are good for the douc habitat like Ficus trees whose fruits the langurs love to eat, and fast growing native trees should be planted to make it suitable for the forest to recover quickly.

He said NGOs like GreenViet and WWF are very necessary to support the local authorities and village households in the process of the langur conservation in Núi Thành District.

“We have seen that Núi Thành District is dominated by acacia plantations. It is logical that village households look for economic development and they see acacia as a good tool to earn money. However, with ongoing climate change and loss of biodiversity worldwide, scientists agree that the best solution is restoring and managing natural forests. There is almost no animal life in monocultures like acacia plantations and these plantations are bad for the environment due to regular burning and soil erosion.”

He also said local authorities could apply ‘rainforestation farming’ models in planting different native valuable timber trees, fruit and medicinal plants instead of acacia.

Dr Vũ Ngọc Long, from the Southern Institute of Ecology said restoration of native trees is needed for feeding langur doucs, and human activities and approaching endangered primates should be restricted.

Vice chairman of the province, Lê Trí Thanh agreed with plans of restoration for a 150ha forest as a habitat for herds of grey-shanked douc langurs from 2019-28, and the area would be built as a habitat and species conservation area.

The province also plans to include the forest restoration as part of the United States Agency for International Development (USAID)-funded Green Annamites Project. 

Nguyễn Dư, a villager said herb gardens in the area would help increase incomes for local residents, and log farmers should be involved in forest restoration and langur protection.

Dư said a group of 20 local residents joined a voluntary team to protect the langurs over past decades.

He said the langurs had been living in peace with local people, and no hunting activities were allowed in the area since the primates were found in 1997.

(VNS)

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