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An incredible biogeographical journey

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By Ifham Nizam

‘The Ecology and Biogeography of Sri Lanka: A Context for Freshwater Fishes’

by Dr. Rohan Pethiyagoda and Hiranya Sudasinghe is a guide to the origins of Sri Lanka’s fauna and flora that strings together different fields of research to shed light on Sri Lanka’s remarkable biodiversity, with a history of over 100 million years.

The book provides a comprehensive context for the island’s plants and animals with a special focus on the ecology and biogeography of freshwater fishes. It contains more than 200 diagrams, photographs and maps including underwater photographs of freshwater fishes, perhaps photographed for the first time in their natural habitat.

It is a source book intended for scientists, students and biodiversity enthusiasts and would help to understand and appreciate the historical and evolutionary context of Sri Lanka’s unique biodiversity.

Although the island’s unique and spectacular biodiversity is celebrated, one rarely stops to think how this incredible diversity arose in Sri Lanka. Remarkably, few scientists seem to have pondered this question. Such studies as there have been, are limited in scope and are scattered across scientific literature.

It was perhaps only a matter of time before Rohan Pethiyagoda, whose name is synonymous with biodiversity exploration in Sri Lanka, lent his mind to this question. Aiding him is Hiranya Sudasinghe, a young biologist who graduated from the University of Peradeniya, presently reading for his PhD in the University of Bern, Switzerland. Together, these authors have put together a definitive text in the form of a richly-illustrated book of some 270 pages. In it, they provide a compelling and comprehensive account of Sri Lanka’s ecology and biogeography.

Few Sri Lankans are aware that our island began its biotic history as a part of the ancient supercontinent of Gondwana, 120 million years ago. Sri Lanka, India and Madagascar broke away from Antarctica and began drifting northwards. The ‘Indian Bloc’ kept on drifting northward until it collided with Asia around 55 million years ago. That gave rise to the Himalayas and the monsoonal weather pattern that still characterises our climate.

Sri Lanka lies within the rainy Intertropical Convergence Zone, and its Southwest quadrant, which we know as the wet zone, has remained perhumid (a wettest type of climate) for about past 30 million years. This means that this region not only receives high rainfall, but also has no dry season. The authors show that this is what facilitated Sri Lanka’s amazing biodiversity: The wet zone is the only perhumid region between Equatorial Africa and Southeast Asia. Its mixed-dipterocarp rainforests contain some of the richest biodiversity on Earth.

As a result, Sri Lanka has ancient evolutionary lineages of animals with Gondwanan origins, such as the familiar spiders, beetles, scorpions, blind snakes and land-snails. The authors illustrate many of these with more than 200 stunning colour photographs. No less remarkable are the plants. They show that dozens of genera of plants that are found in Sri Lanka are wholly absent from India but occur further afield, in Madagascar, the Seychelles, Borneo and even New Guinea. How did this happen? Each case tells a particular story, helping to piece together a puzzle of intricate complexity.

Using tools of molecular biology, Pethiyagoda and Sudasinghe reconstructed the history of their favourite group of fauna: Freshwater fishes. Compared with the Western Ghats of India, Sri Lanka’s freshwater-fish is poor indeed. But the authors use this ‘poverty’ as an opportunity to explore why this is the case. Using DNA-based tools, they reconstruct the ‘molecular phylogeography’ of the fishes, showing how they dispersed through the island. Despite the somewhat technical nature of this particular chapter, it yields some fascinating results which identify, for example, which river basins served as drought refuges during periods of aridification. They show that despite the island’s incredible biotic wealth, it suffered major climate-driven extinctions that decimated its fauna and flora.

The first of these probably took place 65 million years ago, when the impact of a meteor with Earth caused the Cretaceous-Paleogene mass extinction. It was that event that led to the extinction of dinosaurs and resulted in the rise of mammals, including ourselves. By the time of India-Asia contact 55 million years ago, the authors show, very little was left standing in Sri Lanka except for those resilient Gondwanan lineages, such as spiders, snails and possibly a single lineage of frogs that somehow managed to survive. And then, a flood of Asian species swept into Northeastern India and down the peninsula into Sri Lanka. But wait! They couldn’t enter Sri Lanka until sea levels were low enough to give rise to a land bridge between India and Sri Lanka in the vicinity of Adam’s Bridge.

With detailed graphs that reconstruct sea levels over the past several million years, the authors show that Sri Lanka was frequently, if intermittently, connected to India during this time, leading to both immigration and emigration of plant and animal lineages, such as fish, freshwater crabs, amphibians and scorpions. The island’s biotic story then, is one of species evolving prolifically between periodic extinctions. The last of these extinctions occurred only quite recently, probably around 20,000 years ago. Many large mammals, including two species of elephant, two species of rhinoceros, a species of hippopotamus, the tiger, the lion and much else suddenly disappeared. The arrival in Sri Lanka of the charismatic dry-adapted large mammals we cherish today, such as the leopard and sloth bear, was very recent indeed.

Pethiyagoda and Sudasinghe’s ‘Ecology and Biogeography of Sri Lanka’ is nothing short of a masterpiece. It is not just ‘the’ science book of 2021, it ranks among the best science books ever to come out of Sri Lanka, able to stand proudly beside, for example, Professor P. G. Cooray’s ‘Introduction to the Geology of Sri Lanka’ (1984). This is a book that every Sri Lankan nature lover should read in order to understand the context of our island’s biodiversity and just how fragile it is. It is a monumental piece of unadulterated scholarship.



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From stabilisation to transformation without delay

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At a symposium on reconciliation organised by the National Peace Council last week, more than 250 religious clergy, civic activists and political representatives from different communities gathered to discuss the country’s future. Speaking at the event, Minister Bimal Rathnayake explained the government’s approach to national reconciliation. He said the government viewed the country’s recovery in terms of a three stage process. The first stage was stabilisation, the second was development and the third was transformation. Reconciliation, he implied, would come in that final stage. The participation of Opposition Leader Sajith Premadasa at the same symposium, and the constructive nature of his comments, strengthens that hope.

When the present NPP government took office in 2024, the country was emerging from one of the gravest crises in its post Independence history. The economic collapse of 2022 had led to shortages of fuel, food, medicines and electricity. Inflation soared, foreign reserves disappeared and long queues became part of daily life. The political upheaval that followed culminated in the resignation of former President Gotabaya Rajapaksa after mass public protests under the banner of the Aragalaya movement. The country was then governed by a leadership that spoke the language of reform and reconciliation but was widely perceived as lacking a direct popular mandate.

Sri Lanka’s past experience suggests that stabilisation and transformation cannot be treated as entirely separate stages. Postponing reconciliation until some future moment risks repeating the failures of the past. If transformation is endlessly delayed until a supposedly perfect moment arrives, there will always be new crises and new reasons for postponement. Minister Rathnayake’s contention that the government’s immediate priority has necessarily been stabilisation flows from the government’s awareness of the precarious situation the country is. Over the past two years, the government has succeeded to a significant extent in restoring economic and political stability. Inflation has reduced, shortages have ended and public institutions have regained a degree of functionality.

Guaranteed Changes

On the other hand, the country’s development continues to face challenges due to adverse global conditions, including disruptions caused by conflict in the Middle East and extreme weather events that have affected tourism, trade and the cost of living. The danger is that reconciliation may be indefinitely postponed in the name of stabilisation. This danger can be reduced if the government works proactively with the opposition and civil society to commence practical measures of transformation now rather than later. The participation of Opposition Leader Sajith Premadasa at the symposium, and the constructive nature of his comments, has strengthened the sense that bipartisan engagement on reconciliation may now be possible.

The urgency of transformation came through strongly in the presentations made by representatives of the Sri Lanka Tamil and Malaiyaha Tamil communities. ITAK parliamentarian S.Shritharan spoke of the frustration caused by unresolved post war issues in the north and east. He referred to disputes regarding land occupied during the war years, including controversies linked to Buddhist temples and state sponsored settlement activity in areas claimed by local communities. He also pointed to the continuing large scale presence of the security forces in the north and east nearly two decades after the end of the war. These grievances have remained central to Tamil political discourse since the end of the armed conflict in 2009. Families displaced by war continue to seek the return of ancestral lands. Civil society organisations in the north have repeatedly called for greater civilian control over local administration and a reduction in military involvement in civilian life.

Academic research and practical work on the ground have shown that reconciliation cannot be separated from questions of dignity, equality and justice. Former minister Mano Ganesan, leader of the Democratic People’s Front, focused on the longstanding problems faced by the Malaiyaha Tamil community. He spoke passionately about continuing housing shortages, landlessness and economic marginalisation, issues that have persisted since Independence. He also highlighted the devastating impact of recent extreme weather events on estate communities that remain socially and economically vulnerable. The condition of the Malaiyaha Tamil community remains one of the enduring social justice issues in Sri Lanka.

After Independence in 1948, a large proportion of them were denied citizenship and voting rights through legislation that rendered them stateless. Though citizenship rights were eventually restored, the social and economic consequences of exclusion continue to be felt generations later.

Many families still lack secure housing and land ownership despite their immense contribution to the country’s plantation economy. Minister Rathnayake’s responses to both these concerns were politically significant. He argued that recent political developments, including the declining influence of narrow ethnic politics across communities, indicated a major shift in public attitudes. According to him, the political ground has changed in ways that make it increasingly difficult for politicians who rely primarily on ethnic division and communal insecurity to retain public support.

Inter-Connected

There is evidence to support the assessment about the changing political grounding which sees future prospects in the resolution of long standing problems. . The economic collapse of 2022 affected all communities alike and generated a new politics centred on governance, anti corruption, accountability and economic justice. The Aragalaya protests brought together Sinhalese, Tamils and Muslims in a common demand for political change. Although ethnic grievances have not disappeared, the crisis created space for a broader understanding that the country’s future depends on cooperation rather than division. Opposition Leader Premadasa’s comments at the symposium reflected this changing political climate. He emphasised that national reconciliation could not be separated from economic justice and the need to address disparities between regions and social classes.v He also mentioned the need for civil society organisations to take this message to the community. This wider understanding of reconciliation is important because ethnic inequality and economic inequality have often reinforced each other in Sri Lanka’s history.

Academic studies have identified the denial of citizenship rights after Independence as a historic injustice that set back the Malaiyaha community for decades. The challenge now is to ensure that transformation becomes part of the stabilisation and development process itself. Practical first steps are both possible and necessary. The release of civilian lands still under state control, greater devolution of administrative authority, reduction of military involvement in civilian affairs, language equality in public administration and accelerated housing and land ownership programmes in the plantation sector are all measures that can begin immediately without waiting for a final stage of transformation.

The government’s recent commitment that provincial council elections will finally be held this year is therefore significant. These elections have been repeatedly postponed by successive governments. Holding them would not solve the ethnic conflict by itself. But it would signal a willingness to restore democratic institutions and share power in a meaningful way.

Sri Lanka has repeatedly postponed difficult reforms in the hope that a more convenient political moment would eventually arrive. But opportunities are invariably created and fought for instead of being provided as a gift by a benevolent government.

The present moment, shaped by the economic crisis and public demand for accountable government, offers a rare opportunity to move simultaneously towards stability, development and reconciliation. Provincial council elections can be the first meaningful step. But they must not be the last.

by Jehan Perera

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Researchers to shape new environmental policy framework

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Some of the researchers at the meeting

In a significant move aimed at steering Sri Lanka’s environmental governance towards a more science-based and evidence-driven path, the Ministry of Environment has initiated a new collaborative mechanism to integrate leading researchers into national policy formulation and conservation planning.

The initiative was discussed at a high-level meeting chaired by Dr. Dammika Patabendi at the Ministry of Environment on Tuesday, where top environmental scientists, wildlife experts and researchers were invited to contribute towards what officials described as a “strategic transition” in the country’s environmental management framework.

The discussions focused on strengthening the scientific basis of environmental conservation programmes and national policy decisions while creating a more research-friendly environment for academics and field scientists engaged in biodiversity and ecological studies.

Particular attention was paid to long-standing concerns raised by researchers regarding procedural and operational difficulties encountered when conducting studies in collaboration with the Department of Wildlife Conservation and the Forest Department.

Minister Patabendi stressed the need for environmental policies to be guided by credible scientific data rather than ad hoc administrative decisions, ministry sources said.

Among the key proposals discussed was the establishment of a streamlined mechanism that would reduce bureaucratic obstacles faced by researchers in obtaining approvals, accessing field sites and sharing scientific findings with state institutions.

The Minister highlighted the importance of building stronger partnerships between policymakers and the scientific community at a time when Sri Lanka is grappling with escalating environmental challenges including deforestation, biodiversity loss, human-elephant conflict, climate-related disasters and ecosystem degradation.

Environmentalists attending the meeting had also highlighted the urgent necessity of incorporating empirical research into national decision-making processes to ensure long-term ecological sustainability and better resource management.

The meeting brought together several of Sri Lanka’s leading environmental researchers and academics including Rohan Pethiyagoda, Saminda Fernando, Sewwandi Jayakody, Samantha Gunasekara, Dinidu Devapura, Himesh Jayasinghe, Manoj Prasanna, Mendis Wickramasinghe and Suranjan Karunarathna.

Director General of Wildlife Conservation Ranjan Marasinghe also participated in the deliberations.

Officials said the proposed framework is expected to pave the way for a more transparent, data-oriented and scientifically credible environmental governance structure capable of addressing emerging conservation challenges more effectively.

The government expects the new mechanism to support the implementation of practical and scientifically robust programmes aimed at safeguarding Sri Lanka’s ecological future while enhancing cooperation between state agencies and the country’s growing community of environmental researchers.

 

By Ifham Nizam

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Back home … for a special occasion

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Seven Notes: Sri Lankans based in Dubai – with Niluk (second from left)

Niluk Uswaththa, of Seven Notes fame, based in Dubai, surprised many when he and his wife Apeksha, turned up in Colombo, last week … unannounced.

Yes, they had a purpose in their surprise visit … to wish Apeksha’s mum for her birthday, which was on Monday, 18th May, and what a surprise it turned out to be!

In an exclusive chit-chat with The Island, Niluk said that the scene in Dubai is improving and Seven Notes do have work coming their way.

Since the members of Seven Notes are all employed (doing day jobs), they operate only on Saturdays and Sundays.

Niluk: Didn’t come prepared to perform, but obliged
friends in Galle

In fact, to get to Colombo for the birthday surprise (on Monday, 18th May), the band had to skip their 17th May, Sunday gig.

“Although it’s a short vacation, my wife and I are enjoying the setup here,” said Niluk, adding that they spent two days in Galle and that their next destination is Anuradhapura.”

Niluk didn’t come prepared to perform, but he obliged the crowd present, at a friend’s birthday celebrations, in Galle, singing and playing guitar.

They are scheduled to leave for their home, in Dubai, in the first week of June.

Seven Notes is an outfit made up of Sri Lankans and the band has been around for almost nine years.

Niluk came into their scene nearly seven years ago.

“When I went to Dubai, I had offers coming my way but it was Seven Notes that impressed me because of their acoustic style.”

The Dubai’s entertainment scene is showing clear signs of bouncing back and even levelling up in the next few months.

Niluk and Apeksha: Enjoying their short vacation

After a slowdown earlier this year due to regional tensions, shows and festivals are back on the calendar, and organisers say late 2026 could be the busiest concert season in years.

Time Out Dubai says “the 2026 concert calendar is filling up nicely” and “the city is ready to party once again” after some reschedules.

Dubai Summer Surprises in July brings retail activations, comedy nights, and indoor art exhibitions.

Organisers point to a backlog of postponed events that are being rescheduled for late 2026 and early 2027.

Yes, Dubai is calm on the surface but on alert. Life is mostly normal in the city, but there’s a “balancing act” as people watch for escalation.

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