Tuesday, August 23, 2011

US firm clearing virgin forests to grow banana, CEA in the dark

The Central Environmental Authority (CEA), which issues the Environmental Impact Assessment (EIA) report on any development project in the country, is unaware that more than 60,000 acres of virgin forest land have been cleared by a US based multi- national company for banana cultivation in SriLanka.

A group of environmental activists including Piyal Parakrama of the Environmental Foundation Limited (EFL) disclosed at a press briefing in Colombo on Thursday (18) that vast stretches of virgin forest in various parts of the country would be given to Dole Food Company.

EFL Convener Ravindra Kariyawasam pointed out that the areas that had come under Dole’s banana cultivation project included 15,000 acres from Chunnakkadu Reserve in Kantale, 11,600 acres at Kandakaduwa in Somawathiya National Park, 3,000 acres at Uva-Kudaoya in Lunugamwehera and 500 acres at Wekandawewa in Buttala.

 When The Island contacted Chairman of CEA Charita Herath for comment, he said that he was unaware of those projects and that only a narrow road inside the Sinharaja forest had been built with the CEA’s permission as it had zero impact on the forest.

Herath summoned one of his officials to verify whether the EIA reports had been obtained for the projects of the US company and the officer said the CEA had refused to approve several projects. But, clearing of 3,000 acres of forest land in Kandakaduwa in Somawathiya National park was on. Without any approval from the CEA, those projects were going ahead, she implied.

"In most of these forests vast stretches have been cleared and cultivation has commenced. In Wekandawewa, an ancient tank has been encroached on thus cutting off its water to the villagers," Kariyawasam said claiming that Galle, Puttalam, Dambulla and Hingurakgoda were likely to lose forest land to Dole banana project in future.

According to the Food and Agriculture Organisation report, Sri Lanka has been ranked the 4th worst country in the world in terms of deforestation for the period 2000-05.

The CEA Chairman also said that Sections 5 and 6 of the Amended Fauna and Flora Protection Ordinance No. 22 of 2009, had laid down guidelines to prevent harm to the environment, therefore the environmental pressure groups were seeking legal advice on it.

Source:http://www.island.lk/index.php?page_cat=article-details&page=article-details&code_title=33014

Nil Manel under threat of extinction

Sri Lanka’s national flower (Nil Manel) is under threat of extinction due to hybridizing with a foreign species.

This was reveled by Peradeniya University Botany Department Senior Lecturer Prof. Deepthi Yakandawala.

She said that the native Nil Manel flower is small and bluer than the larger purple imposter which may be either Nymphaea capensis.

Water-lilies (Nymphaea sp.) have been popular as an ornamental aquatic plant in Sri Lanka from ancient times as they produce striking flowers throughout the year.

Prof. Yakandawala said that the hybridization has been observed in several places in Sri Lanka’s natural environment.

She also added that the flower shown as Sri Lanka’s national flower in stamps and other publications is a foreign imposter.

Hybridization of invasive aliens with native flora is currently identified as a major threat where this could lead to the extinction of the native flora, Prof. Yakandawala said.

Source:http://www.island.lk/index.php?page_cat=article-details&page=article-details&code_title=33032

Monday, August 15, 2011

The fall of the Tusker

Extracts from a talk on ‘The Future of the Tuskers in Sri Lanka’ by Srilal Miththapala at the Sustainable BioDiversity and Economic Development Conference held last month

In Sri Lanka, the elephant has had a very close association with the people, culture and religion of the country. It is estimated that the beginning of the 19th century, there were some 10,000 wild elephants in Sri Lanka (Mackay, G. M. 1973), but in subsequent years, indiscriminate capture and hunting led to the destruction of thousands of elephants. The remaining populations are mostly smaller, isolated and fragmented, because their ancient migratory routes and habitats have been disrupted by expanding human encroachment.

This fragmentation of habitat has increasingly brought wild elephants in conflict with man. Today, the human elephant conflict (HEC) has transcended from a basic wildlife management problem to a major environmental and rural socio economic crisis in Sri Lanka.

The Department of Wildlife Conservation (DWLC) has recorded that 1369 elephants have been killed in the last 10 years, while during the same period more than 500 humans have also lost their lives. The DWLC estimates that Sri Lanka has around 4,000 to 5,000 elephants in the wild, and that on the average HEC results in 150 elephant deaths per year, and 50-70 human lives per year.( DWLC Web Site)

Due to the ranging behaviour of elephants, it is most often solitary bull elephants that face most of the conflict in their search for food, water and receptive females for mating. Of the 1369 elephants killed over the past 10 years, the DWLC estimates that 68% were healthy adult bulls.
Hence this is of great concern for sustaining a viable wild elephant population. Given the fact that only male Asian elephants have tusks, and the fact that the Sri Lankan species has one of the lowest incidences of tuskers of around 7.3% of the male population (Hendawitharana W, Santiapillai C, et.al 1994), there are definitely enough reasons and more, to be concerned about the future of the tuskers among the Sri Lankan wild elephant population.
A blessing and curse
All species of elephants have tusks. In the case of the African species, both male and female have tusks, while in the Asian species only males have tusks. Among Sri Lankan elephants, the incidence of tusks in males is one of the lowest of the Asian sub species, with only around 7% males having tusks.
The tusks are really the two front upper incisor teeth of the elephants. The tusks being a biological product, are composed of ivory which in turn is mainly made up from calcium and phosphate and other minerals. (Shoshani , J. 1992) Only about 2/3rds ofthe tusk is exposed, while the balance 1/3 lies embedded in the skull.
Asian elephants sometimes sprout small tusk like protrusions, which are called ‘Tushes’. Although they are also incisors (the 2nd set), they are not really tusks. They do not have a pulp cavity and grow only up to about 6 inches and are seen in both males and females.

Informal nomenclature
There is an informal way of referring to different elephants in Sri Lankan village culture based on the presence or absence of tusks as follows.
  • Etha - Tusker (male)
  • Aliya - Male without tusks
  • Pussa - Male without tushes
  • Ethinna - Female with Tushes
  • Alidena (Kenera) – Female without tushes
    ( de Silva, M & de Silva, P 2007)
Number of tuskers in captivity
With the banning of the capturing of elephants from the wild in 1960s, the captive population of elephants has been dwindling over the years. From about 300 elephants in captivity in the early 1980s, this number has drastically reduced to around 120 elephants today. Given the demand for captive elephants and tuskers in particular, for religious ceremonies in temples, there is a high demand and value placed on the remaining captive tuskers.

Distribution of tuskers in Sri Lanka
It has been shown that the tusker population in Sri Lanka is relatively small. However, within this small population, there is sufficient reason to believe that there appears to be a high incidence of tuskers in certain areas of the island. These include the North Western and North Central provinces as well as the South East area (many photographers have been able to capture in one frame, upto three or four tuskers in the Kalawewa area regularly, while Yala being the most popular national wild life park has recorded many iconic tuskers over the years. Although living mostly within the protected area of the Yala National Park, several of these magnificent tuskers have met an untimely death when ranging outside the park.

The demise of tuskers
Records indicate that in ancient times, Sri Lankan male elephants did have a greater abundance of tusks. History has it that Sri Lanka elephants could be well trained to be used in war and that they were exported in large numbers to the Middle East (Groning,K&Saller, M 1999). Most of these war elephants were tuskers.
Hence, from a seemingly healthy and abundant wild tusker population in the past century, there has been a drastic reduction of tuskers in the wild in Sri Lanka. In the mid- 1800s, to make way for the expanding plantation sector, there was an open warrant given with a bounty, for hunters to kill elephants. This became a sport, and most of the hunters searched out the bigger males carrying tusks, which was a bigger challenge and prize. Hence thousands of elephants were destroyed during this period, and it could be surmised that a large proportion of these animals killed were tuskers.
To further compound the problem, rapid development resulted in unplanned human settlements being set up in traditional elephant lands, fragmenting their movements and restricting their migratory patterns. This would have curtailed the movement of the few remaining tuskers, thus effectively isolating the gene pool, reducing cross fertilization among herds, and in turn reducing the proliferation of the tuskers in the wild.
Evolution also may have been taking its course, and selectively reducing the number of tuskers because they were the most robust of the males who would take the greater risks in searching for food, newer habitats and receptive females, thus having greater altercations with humans and having a greater mortality rate.

Future of tuskers
There is very little hope that a healthy and robust tusker population in the wild in Sri Lanka will grow, or for that matter even be stable. The habitat is far too fragmented to sustain a healthy breeding population of tuskers in the wild. However, if some concerted efforts are made to firstly identify if certain areas do actually have a higher incidence of tuskers, and if so, protect and carefully manage these populations, perhaps we can at least try to sustain some tuskers in select areas.

Source:http://www.sundaytimes.lk/110814/Plus/plus_06.html

Wild orchid, Nervilia Plicata blooms in Lanka too

In the midst of a study, researcher Ajantha Palihawadana was puzzled by a strange looking plant in a home garden in Koswatte. It had only one leaf. Recognizing it as a ground orchid, though different from others he had seen, he placed it in a pot in his garden waiting for it to bloom.

A few months later, the leaf died. But knowing the strange behaviour of some orchids, Ajantha marked the pot and kept it aside. A few months later, he was thrilled to see a flowering shoot emerge from the soil. And when, the flowers bloomed, the plant’s true beauty was seen. Scientifically categorized as Nervilia Plicata –it was the first confirmed record of this species from Sri Lanka.
Nervilia Plicata : An orchid recorded from tropical Asia
 

This large leaf dies after a few months
 
Nervilia Plicata is an orchid recorded from tropical Asia and growing in India. This finding confirmed its presence in Sri Lanka too updating the National Orchid checklist to 189.
Nervilia Plicata has some special characteristics. The width of its hairy heart shaped single leaf can be from 7.7cm to 10.8cm. The leaf can look dark green or dark purple depending on the angle of exposure to light.
This large leaf dies after a few months, but its rhizome (the horizontal stem of the plant) survives underground. Then during March, April and May – the flowers appear. Nervilia Plicata produces two flowers usually a foot above the ground, a mix of purple and green and about 6 centimetres in diameter. Unlike most orchids, this flower also has a fragrance but lasts only four to five days.
Ajantha said there had been several specimens of Nervilia orchids deposited in the National Herbarium previously, but they were not properly identified. However, for the first time, now a complete specimen has been deposited in the herbarium, so that other scientists too can observe the species.

The study of wild orchids is time-consuming but also rewarding, says Dr. Suranjan Fernando, another scientist involved in orchid research. Sri Lanka has epiphytic orchids that usually grow on trees, terrestrial orchids, climbing orchids and also saprophytic orchids. Saprophytic orchids, like Nervilia that live on dead organic matter such as leaf litters are also interesting as they do not have any leaves and only a flower. They depend on fungi for their entire supply of nourishment. Most orchid flowers also had different adaptations to attract different kind of pollinators, Dr. Fernando said.

Such interlinks also make the wild orchids threatened. For, if a specialized pollinator insect has been removed from the ecosystem by extensive use of pesticide etc, the orchids lose means of pollination. But the main threat remains habitat loss, says Dr. Fernando pointing out that most of the orchid rich habitats such as Uva Savannah, the Peak Wilderness, Morningside of Sinharaja are being progressively degraded.
IUCN’s National Red List of Threatened Flora & Fauna of Sri Lanka published in 2007 also paints a gloomy picture for orchids as it records 4 extinct species, 22 critically endangered and 47 endangered plants out of the reviewed species.

Director of Sri Lanka Botanical Gardens Department Dr.Siril Wijesundara said that Sri Lanka has lost about 83% of her wildlife habitat during the last two centuries and if the remaining habitats are not protected, it will have a serious impact on our beautiful orchids. These highly specialized and sensitive plants are extremely vulnerable to ecosystem changes.
Some of our orchid species including the beautiful, endemic Vanda thwaitesii have not been seen in Sri Lanka for more than a century, he said.

Nervilia Plicata habitats are also threatened, adds Ajantha Palihawadana adding that studies done by True Nature Conservation Society led by himself found the plant also in Ravana Ella and Balangoda. According to the records, this orchid is restricted to the savannah ecosystems in the Intermediate Climatic Zone where trees are scattered in grasslands.

The wet patches located in this area are the home of this orchid, but unfortunately this is also one of the highly threatened habitats in Sri Lanka.

Dr.Wijesundara points out that the collection of rare orchids from the wild by hobbyists is on the increase and needs immediate control. Many also remove wild orchids to their home gardens, but these orchids need special habitats and conditions, and will die or will not flower the way they do in the wild so are best left untouched.
Source:http://www.sundaytimes.lk/110814/Plus/plus_07.html

Saturday, August 6, 2011

Rock blasts threaten rare fish with extinction

Rock blasting at the centre of the Mahaweli Ganga at Getambe by a private institution in violation of a ban imposed by the Central Environmental Authority (CEA) is posing a threat to a rare fish species known as Gadaya (Labeo fisheri), said Zoological researcher Pradeep Samarawickrama.

Rock blasting
He said the blasting is being carried out by this institution for a proposed mini hydro power plant. The CEA chairman has ordered the party concerned to halt the blasting , but the work was suspended for 10 minutes only, on Monday, he said.
“Gadaya has been reported in Sri Lanka 20 years ago. But this variety cannot be found in the area today. Therefore this species is entered in the Red Data book as a sterilizing fish,” he said.
“After 20 years three dead fish of this variety had been found floating in the Mahaweli Ganga,” he said.
Rapidly flowing deep water is the natural habitation of this fish species. This area has been identified as a landslide prone area. Therefore construction has been banned in these areas. An entire family had been buried due to a previous landslide.
Residents also protest against this exercise which has caused them insecurity.
Nevertheless this company is not paying heed to these protests and are continuing with their construction programmes, he said.
Central Environment Authority Chairman Dr Charitha Herath said that, permission which has been granted to continue the constructions has been stopped. It had not been extended. Environmental Lawyer Jagath Gunawardana said, according to the National Environmental Act no project should be started without environmental clearance.
In this instance the clearance that was given in 2007 expired last year. It is praiseworthy that Chairman of the Central Environment Authority has http://www.blogger.com/post-create.g?blogID=8653294068511249161taken action to prevent environmental damage.
Responding to the Daily News, a spokesman of the constructing company said the blasting has been stopped on the orders of the Central Environment Authority. The company is awaiting the advice of the CEA to commence the construction programmes again.

Sri Lanka Mahaweli Authority Director Environment A M K B Attanayake said that, the Sri Lanka Mahaweli Authority is the approved agent of this project. Therefore, constructors should work under the approval of the Central Environment Authority. First the CEA had allowed to commence this project and on the second occasion not extended the permission to continue the project up to now. Nor have they stopped or suspended the project.He further said that, the Mahaweli Authority is involved in investigating about the threat posed to “Gadaya”. However their team was unable to uncover such a species.
“We can’t say whether or not there is Gadaya. Action should be taken either to continue or stop the project after conducting a systematic study.

Source:http://www.dailynews.lk/2011/08/05/news11.asp