Features
Evolution from AM radio to Digital TV broadcasting
Parliamentary Acts on Broadcasting and Telecommunications
by DR JANAKA RATNASIRI
The Cabinet of Ministers (COM) has recently decided to update the Parliamentary Acts on Broadcasting, Rupavahini and Telecommunications and introduce a Bill on establishing a Broadcasting Regulatory Commission. Since, all these are interlinked, it is necessary to take a holistic view of them, taking into consideration new developments such as digital broadcasting. Before that, it would be pertinent to consider the historical development of these services.
USE OF ELECTROMAGNETIC WAVES FOR COMMUNICATION
The Electromagnetic (EM) Spectrum comprising EM waves, extends from high energetic gamma rays, X-Rays and ultra-violet rays on one extreme to low energetic visible, infra-red, microwaves and radio waves on the other extreme. All these are generated naturally by the sun, but almost all of the high energetic radiations get absorbed in the upper atmosphere and only the low energetic radiations are received at ground level. They are also generated by man for various applications like X-Rays, microwaves and radio waves. Out of these, microwaves and radio waves are used for telecommunication purposes, commonly referred to as wireless communication.
EM waves comprise oscillating electric and magnetic fields generated when electrons oscillate either in a plasma or in a conductor. These two fields have their directions perpendicular to each other. They cause radiation of energy in the form of a wave travelling in a direction perpendicular to directions of both electric and magnetic fields. They are characterized by the fact their frequency in Hertz (Hz) and wavelength in metres (m) are inversely proportional to each other with their product equal to the speed of light in vacuum which is 299.8 million m/s. It was James Maxwell who presented the theory of EM waves around 1865 while Gustav Hertz demonstrated their existence in 1887 which earned him the Nobel Prize for Physics in 1925.
Hertz’s discovery led to Guglielmo Marconi demonstrating in 1901 that high frequency (HF) waves could be used to send signals across the Atlantic. This caused the birth of the telecommunication industry, for which he received the Nobel Prize for Physics in 1909. Though HF radio waves were used for long distance communication, the mechanism of their propagation over several thousands of kilo-metres was not understood at that time. Theories of propagation available at that time considered only ground wave propagation which has limited range and line-of-sight propagation which also has limited range along the Earth’s surface. Hence, coverage across the Atlantic was a puzzle at that time.
It was left to Edward Appleton to explain this phenomenon when he discovered in 1927 the existence of the ionosphere, a layer of charged particles lying about 100 km above the ground, which bounces off these radio waves back to the Earth when they are incident on it. Appleton received the Nobel Prize for Physics in 1947 for this discovery. It was soon found that radio waves could be used not only for telecommunication purposes, but also for providing voice broadcasting services, known as radio, both within and across countries. HF radio waves remained the only means of long-distance telecommunication as well as broadcasting until the mid-sixties when satellite-based communication took over which came into being, thanks to the vision of Sir Arthur C. Clarke announced in 1945 in the Wireless World Magazine.
DEVELOPMENT OF RADIO BROADCASTING SERVICES
Public broadcasting in Sri Lanka commenced in 1925 as Radio Colombo with limited coverage around the city using only MF transmissions. It expanded to a wider coverage about 10 years later and continued till 1949 when its identity was changed to Radio Ceylon. The services were also extended to provide short wave transmissions to provide island-wide coverage though the service was of poor quality due to inherent ionospheric disturbances. Radio Ceylon had one advertisement-free service in each language for many years and added separate commercial services later. Though Radio Ceylon functioned for many years as a semi-government organization under different Ministries from time to time, it lacked a proper legal framework.
To remedy this situation, the Ceylon Broadcasting Corporation (CBC) Act No. 37 of 1966 was passed in Parliament and the CBC was established in 1967 which brought Radio Ceylon to function under it. The Act was amended thrice, to make SLBC both a regulator and a service provider. One amendment was to change its name to Sri Lanka Broadcasting Corporation (SLBC). Another was for the issue of licenses by the Minister to other persons for the establishment of private broadcasting stations. The amended Act also required an owner of a radio receiver to obtain a licence annually through the Post Office. The Act also requires any person selling, assembling, repairing or renting radio equipment to obtain an annual licence from SLBC to perform that function. Thus, the SLBC performed a dual role of being a service provider and a regulator.
The evolution of radio technology from vacuum tube-based home radio receivers available up to sixties to transistor and integrated circuit based portable radio receivers currently available in the market made it impossible to implement the licensing provision. Hence, this requirement was abolished subsequently, but the provision still remains in the Act. Today, every motor car has a built-in radio receiver and every smart mobile telephone has a built-in radio receiver. Hence, there is a need to amend the SLBC Act to remove this outdated provision.
From the inception, radio broadcasting in Sri Lanka was confined to transmission of amplitude modulated (AM) signals which had limited band-width causing high frequencies in the audio signal getting clipped. This affected the quality of musical programmes severely. These transmissions were in the medium frequency (MF) (or medium waves) for short range coverage and high frequencies (HF) (or short waves) for covering the entire island. The short waves reach the listener after getting reflected from the ionosphere which is a dynamical entity and hence the signals received were not steady and of poor quality. In the sixties, SLBC built several MF transmitters in outstations enabling outstation listeners to have the benefit of receiving quality programmes free of ionospheric disturbances.
In the seventies, the SLBC commenced limited transmissions of signals with frequency modulation (FM) on the very high frequency (VHF) band. These transmissions have higher bandwidth and hence the audio programmes received are of high quality, and also require much less power to transmit. They are also not affected by atmospheric or ionospheric disturbances. The only problem is that their coverage is limited to line-of-sight range. Later the service was extended to provide an island-wide coverage through the installation of several transmitters, most of which are installed on hill-tops to extend the coverage.
Up to the end of the 1980s, the SLBC had the monopoly of operating radio services, but in the nineties and twenties, several private parties, exceeding 20, were issued licences to operate radio services in the FM band. Each service was given two frequencies enabling them to cover the entire island. Most of them, except a few who offered religious programmes, came up with only low quality musical programmes providing requests on payment devoting a major share of air time on advertisements which brought the revenue for their survival. The lack of a suitable mechanism to monitor the quality and content of the programmes aired is a serious shortcoming in the present system.
DEVELOPMENT OF TELEVISION BROADCASTING SERVICES
Television (TV) service was introduced to Sri Lanka in 1979 when a private party launched a service voluntarily. Later, it was taken over by the Government. At that time, there was no policy or regulations on establishing TV services in the country. The Sri Lanka Rupavahini Corporation (SLRC) Act, No. 06 of 1982 was passed under which the SLRC was established with functions of the Corporation to carry on a television broadcasting service within Sri Lanka and to promote and develop that service and maintain high standards in programming in the public interest. The Rupavahini TV service was launched by SLRC using a package gifted by Japan, with the main antenna erected on Mt. Pidurutalagala.
The Act is required to register persons engaged in the production of television programmes for broadcasting; to register persons who carry on the business of importing, selling, manufacturing or assembling television receiving sets; to exercise supervision and control over television programmes broadcast by the Corporation; and to exercise supervision and control over foreign and other television crews, producing television programmes for export, among others.
Thus, the SLRC also has a dual role similar to that of SLBC, of being a service provider and a regulator. However, it lacked the powers to implement the provisions to exercise supervision and control on other TV services as described in the last two items given in the previous section. The SLRC Act has provision to issue licences to qualified parties to establish and operate TV stations. Accordingly, 54 private television licenses have been issued licences so far, whereas only 28 telecasting licensees are in operation at present (Cabinet Decision of 04.03.2020).
The Cabinet of Ministers (COM) at its meeting held on 04.01.2021 has decided to amend the SLRC Act to provide for the expansion of its Board of Directors to empower it to implement decisions taken with a view to face the competitive scenario prevailing in the field. No further amendments have been identified even though the Act is totally out of date considering the developments in the field during the last 19 years. There is a need to bring SLRC under the proposed Broadcasting Regulatory Commission to remove the regulatory functions from it and also to remove the provision to possess a licence by a user.
ESTABLISHING A TELECOMMUNICATION REGULATORY COMMISSION
In early days, the telecommunication services were provided by the Posts and Telecommunication Department, which was later bifurcated into two departments. The government passed the Sri Lanka Telecommunication (SLT) Act No. 25 in 1991 which provided for the establishment of the Sri Lanka Telecommunication Authority (SLTA) which took over the functions of the Telecommunication Department. Among the objectives of the SLTA are to ensure the conservation and proper utilization of the radio frequency spectrum by operators and other organizations and individuals who need to use radio frequencies and to make and enforce compliance with rules to minimize electro-magnetic disturbances produced by electrical apparatus and all unauthorized radio frequency emissions, among others.
The SLT Act was amended by Act No. 27 of 1996 whereby the Telecommunications Regulatory Commission of Sri Lanka (TRCSL) was established in place of SLTA. The amended Act made provisions for receiving complaints from the public and holding public hearings on them and retained all the functions assigned to the SLTA. Its regulatory functions were limited to telecommunication service providers and did not cover the broadcasting of radio or TV services, other than assigning frequencies for them. This is unlike in India where the Telecommunication Authority covered regulation of Broadcasting of Radio and TV services both in terms of technical aspects and quality of programmes.
PROPOSAL FOR ESTABLISHING A BROADCASTING REGULATORY COMMISSION
The COM at its meeting held on 04.03.2020 having considered the necessity of having a separate institution to regulate the activities of the broadcasting and telecasting media based on a Committee recommendation approved a draft for setting up a ”Broadcasting Regulatory Commission” (BRC), and decided to explore the possibility of amending the SLTRC Act, to enable it to perform the task of the process of issuing Broadcasting and Telecasting Licenses, which were hitherto issued by the SLBC and SLRC, respectively. The objective is to remove the regulatory functions from these two organizations and transfer them to the new Commission.
As early as 1997, a Broadcasting Authority Bill was presented to the Parliament for the same purpose but it was held unconstitutional by the Constitutional Court because it did not give adequate independence to the Authority. Thereafter, a Select Committee of Parliament with representation of all parties was appointed to consider the problem and met on multiple occasions but the matter was left in abeyance. Now, it has resurfaced under a new heading – Broadcasting Regulatory Commission. However, its contents are not available in the public domain, not even in the Govt Printer’s website.
Unlike in early days when broadcasted programmes whether radio or TV were available only as free-to-air services, today with advances in technology, particularly TV programmes, are brought to residences using either physical cables or UHF links or satellite links or through the internet. Since free-to-air services are not available island-wide with acceptable quality, people opt for these services upon payment of a monthly fee. But some satellite links do not provide a satisfactory service when it rains, though the service provider claims it provides tomorrow’s technology today.
There is also an urgent need to exercise some control on the utilizing of TV medium for advertising purposes. While there is a positive aspect whereby a viewer receives information on a new product or service, the repetitive display of the same commercial of well-known consumer products is nothing but an annoyance. The writer believes that during prime time, between almost 50% of air time is devoted for commercials and promotional clips. This is in contrast to India where only 10 min of commercials are allowed for every 60 min of air-time. Hence, there is a need to have a regulatory body to ensure that satisfactory services are provided to subscribers, both in terms of the quality of signal received and the quality of programmes aired.
A notable characteristic of Sri Lanka’s TV service providers is that they seem to be very prudish when it comes to airing cinematographic material intended for adult audience, but of high quality which have received accolades at international events. The operator loses no time in blanking even a momentary kissing scene in them. The proposed BRC could lay some guidelines on presenting quality adult programmes which have already been cleared by the National Censor Board enabling the adult audience to enjoy them without subjecting them to additional censorship by TV operators. Perhaps, such programmes could be limited for airing during late hours of the day when children have gone to bed.
TRANSITION FROM ANALOG TV TO DIGITAL TV SYSTEMS
There is a global trend to switch from analogue to digital system for television broadcasting as it offers many advantages among which are better spectrum utilization, higher picture and sound quality, accessibility via mobile devices and new business opportunities. Under the sponsorship of the International Telecommunication Union (ITU), a Roadmap for Transition from Analogue to Digital Terrestrial Television Broadcasting (DTTB) in Sri Lanka was jointly developed in 2012 by a team of ITU experts from Korea and the National Roadmap Team (NRT) chaired by TRCSL.
Digital TV transmission, though will provide a high-quality service, will result in added expenditure both for the service provider and the viewer. In order to reduce the financial burden for the service provider, NRT proposed to establish a set of 8 common digital transmitters at sites already being used for TV transmission, for sharing by all service providers. They are expected to provide initially simultaneous transmissions both on analog and digital systems, so that a viewer will be able to receive programmes uninterruptedly when switching from analog to digital system.
As a follow up to the above proposal, the GoSL assigned a “Feasibility Study on Digital Terrestrial Television Broadcasting Network Project” in 2014, to Japan International Cooperation Agency. (). This study recommended setting up of 16 digital transmitters to be managed by a separate body, with the principal tower at Lotus Tower in Colombo. Individual TV services are expected to send their high definition programmes to Lotus Tower by microwave or other links who will in turn broadcast them from the common set of transmitters. By this means, all the TV channels will be received at the same signal strength anywhere in the country.
It was proposed to establish a body to be known as “Digital Broadcast Network Operator” (DBNO) to organize, manage and administer the new system. DBNO is expected to operate and maintain the entire system with the revenue from the operation fees collected from broadcasting stations. The transition to DTTB will result in incurring heavy expenditure by both DBNO and individual service providers, including installing new antenna systems, purchasing digital studio equipment such as cameras, animators, programme mixers etc. all of which could run into Billions of Rupees.
In addition, viewers will have to purchase either set-top-boxes for use with analog receivers or new digital receivers. It may be recalled that with the new development in TV technology, the earlier Cathode-Ray-Tube (CRT) type TV receivers were replaced by slim type LCD/LED TV receivers during the last couple of years. Today, CRT receivers are no longer available in the market. Hence, changing receivers will not be an issue for our viewers, as long as it carries benefits.
In the event the Government decides to adopt the DTTB system, it will be necessary to introduce new laws and regulations to regulate the new DTTB industry, and considering the complexities involved, it is best if a total new Parliament Act is passed, with appropriate amendments to both the SLRC Act and SLT Act. The COM has already decided to amend both these Acts as mentioned above. It is therefore appropriate if the Committee to be appointed for this purpose also be given the mandate to study the desirability of introducing DTTB in Sri Lanka considering costs and benefits as well as viewer preferences and service provider views.
Though the GoSL entered into an agreement with JICA to pursue the matter in 2014, with the change of Government in 2015, the matter was left in abeyance. Under the new Government, the matter is being considered, but no decision has been made as to when it will be implemented and which DTTB standard to adopt, as learned by the writer when he started writing this piece. However, according to a news item telecast in the evening of 19.01.2021, the Japanese Government has offered assistance to Sri Lanka to switch over to DTTB as described in JICA Report issued in 2014, and the Cabinet Spokesman Minister said that Sri Lanka would soon adopt the new system.
CONCLUSION
Sri Lanka will be completing 100 years of public radio broadcasting in four years hence, and has come a long way going through various stages of development. Initially, there were no separate laws to regulate the industry, and the state-owned service provider used to do that function. This position remains unchanged to date and only recently that the Government has considered establishing separate organizations to provide regulatory function. Only the amendment of SLRC Act and SLT Act are being considered along with setting up a new Commission for regulating broadcasting of radio and television services. Hence, there is a need to consider amending these two Acts together with amending the SLBC Act.
With the proposed introduction of digital television transmission in Sri Lanka as reported by the Cabinet spokesman, the Writer suggests that the amendment of the above three Acts should be taken up along with formulating a new Act to cover Digital Transmission Broadcasting since all four are interlinked, before the actual transition takes place. It is hoped that with the introduction of digital TV transmissions the quality of programme content will also improve concurrently.
Features
Universities, as centres of learning, must not be politicised
“They must foster the abiding values of freedom of thought and expression, respect and tolerance for viewpoint difference …”
Address recently delivered by Professor Savitri Goonesekere,
former Vice-Chancellor and emeritus Professor of Law of the university of Colombo,
at the establishment of the Prof. G.L. Peiris Trust for Legal Education and Research.
Thank you, Professor Peiris, for inviting me to speak this evening at an event to announce the endowment that is being made to the University of Colombo and the Sri Lanka Law College as the G. L. Peiris Trust for Legal Education and Research.
You and I have walked the corridors of this beautiful building as Vice Chancellors of this university. The walls of the Senate Room carry our portraits, but do not reflect the experiences that we have had in that capacity. We worked in this institution and chaired Senates and Councils. These fora were places that gave us an opportunity to respect viewpoint differences that were shared in an environment of collegiate connectivity, often in challenging times, when violence in armed conflict was a lived experience for all Sri Lankans.
This is also an occasion to share with this audience a day in this building when you had to confront the horror of the assassination of your predecessor, Professor Stanley Wijesundere, just across from your office. This was summary justice by the then JVP for taking decisions in academic bodies of the university in medical education. I was at the time Dean of the Faculty of Humanities and Social Sciences at the Open University in Nawala. Yet we connected across Universities, supported each other to cope with those dark times. You, as Vice-Chancellor of this University, and my Vice-Chancellor, the late Professor Dayantha Wijesekere, collaborated to network and respond to violence against staff and students from non-state and state actors. University Teachers for Human Rights was born at this time with the support of both Vice-Chancellors.
Some years later, as I walked up the stairs of College House, on what I expected to be a routine day, a colleague ran down that staircase to say that a former student and cherished friend, Dr. Neelan Tiruchelvam, had just been assassinated. Devastated as I felt, I had no inhibitions in speaking later at his funeral, in what had been a political assassination. I did not have to ask for permission from the University Council to do so.
Today, freedom of thought and speech in academic institutions is being challenged in the United States and our own country in restrictive norms on governance of public institutions. These events of the past and that history are an eloquent reminder that Universities, as centres of learning, must not be politicised. Rather, they must foster the abiding values of freedom of thought and expression, respect and tolerance for viewpoint difference, and bring that voice to both University fora and the public domain. In those times, professors and law teachers did not have to explain to Vice-Chancellors and Deans why they expressed views within and outside Universities on issues of public concern.
Today is a day to also recall Professor Peiris’s own scholarship in the area of public law and particularly on freedom of speech and expression that preceded the dramatically different career path he chose to take. That scholarship will now be available to generations of law students, teachers and lawyers, as well as others, hopefully inspiring an understanding and reflection on fundamental legal principles and concepts that can contribute to the wellbeing and sustainable development of a nation.
The literature and your scholarship that will be shared through the G.L. Peiris Trust will also hopefully be a reminder that “one must know the law as it is, to comment on what it should be”. For your early scholarship is very much in the tradition of analytical positivism that you and I were immersed in as students of the one and only Law Department in Peradeniya and later in this university. We pulled what are called “all-nighters”, as students and teachers, reading in our rooms or in that wonderful library in Peradeniya, referring cases, statutes, Grotius and Voet, the jurists of Civil Law, and of course the great Common Law and Civil Law scholars like Ivor Jennings, H. L. A. Hart, and R.W. Lee.
Professor Peiris, as you all know, came into the University with a stellar record from that institution near the Indian Ocean, where, (as loyal Royalists would have it), scholar students were not the norm. Coming into a University with a scholar’s record does not necessarily translate to a stellar University career. Professor Peiris, with his prodigious capacity for academic work, clarity of thought and writing, thrived in that new learning and teaching environment. He made history in the Law Department, winning every scholarship awarded and graduating at that time with the much prized first-class honours degree. I myself was a young law teacher at the time, and recall that it was impossible to grade GL’s papers with any grade but an A. The length of those contributions, of course, required exhausting attention, and I think taught his teachers to learn how to read carefully. My young grandchildren cannot read a long email from me today without missing a lot of its content!
The G. L. Peiris Trust will provide readers with a rich range of literature on a phenomenal diversity of laws in this country, with comparative jurisprudence from Civil and Common Law countries. If the Rule of Law in a democracy is to be maintained and strengthened, we must reflect on the fact that analytical positivist scholarship is not irrelevant in our times. It is that University tradition that was nurtured in the early post-independence and post-colonial era in Sri Lanka and Civil and Common Law countries that created the foundation for the great later jurisprudence in our own courts and in India. This is especially evident in important areas of public law, including constitutional law and human rights. Justices like A. R. B. Amerasinghe and Mark Fernando and lawyers like Mr. H.L.de Silva and my late husband, R. K. W. Goonesekere, were all alumni connected to this University. Their contribution to jurisprudence and legal reform in this country was nurtured in halls of learning that recognised that we must learn the law as it is, to understand what it ought to be. Professor Peiris himself demonstrates that heritage in his later work on public law and in contributing with another distinguished alumnus, the late Neelan Tiruchelvam, to the draft Constitution of 2000. I hope that the G. L. Peiris Trust will also include papers relating to that work, the best draft Constitution to date, abandoned in what has now become the norm of adversarial politics.
The long overdue institutional connection between university academia and the Law College that is made through the G .L. Peiris Trust is welcome. The Principal of the Law College, Prasantha Lal de Alwis, PC, an alumnus of our Law Faculty, has given leadership in creating a new path that must benefit both institutions.
In my time, students and teachers did not connect outside the halls of learning in later life as Sirs/Madams in perpetuity. They became and interacted as colleagues. As a former teacher, colleague, and Vice-Chancellor of this University, thank you, GL, for this generous endowment. May it be a valued institutional legacy that will inspire commitment to, and understanding of, the Rule of Law in a country that will always be a Democracy.
Features
The silent hunters: Why Sri Lanka’s spiders matter
By Ifham Nizam
They are everywhere, yet most of us hardly notice them. In the corner of a garden, beneath a leaf, across a paddy field, inside a forest or quietly occupying an old tree, spiders are constantly at work.
They may be tiny enough to escape the human eye or large enough to command attention, but beneath their often-misunderstood appearance lies an ecological workforce that performs one of nature’s most important jobs.
They hunt
And in doing so, spiders help keep insect populations under control, strengthen food webs and contribute to the delicate ecological balance upon which both natural ecosystems and agriculture depend.
For Sri Lanka, a country celebrated for its extraordinary biodiversity and high degree of endemism, the world of spiders is particularly fascinating. Yet it remains one of the lesser-known chapters of the island’s natural history.
Field biologist and researcher Dr. Ranil Nanayakkara has spent years helping to open that chapter.
His work on Sri Lanka’s spiders, including the spectacular tiger spiders of the genus Poecilotheria, has demonstrated that there is much more to these creatures than the fear and suspicion with which they are often regarded.
Nanayakkara has been involved in the description and documentation of several remarkable Sri Lankan tarantulas, including Poecilotheria rajaei and Poecilotheria srilankensis, as well as Chilobrachys jonitriantisvansickleae. His research has also taken him into the less-studied corners of Sri Lanka’s biodiversity.
His approach is significant because the story of Sri Lanka’s spiders is not simply a story about unusual or frightening creatures. It is a story about ecosystems.
Nature’s pest controllers
A spider sitting motionless in a web may appear inactive, but its ecological role can be anything but passive.
Spiders are predators, feeding predominantly on insects and other arthropods. Across an agricultural landscape, this makes them natural allies of farmers.
Moths, beetles, flies, grasshoppers, leafhoppers, planthoppers and many other insects become part of the prey base of different spider species.
Some spiders wait patiently in intricately constructed webs. Others actively hunt across leaves, vegetation and the soil surface. Jumping spiders stalk their prey with remarkable precision, while wolf spiders move across the ground rather than depending on webs to capture food.
Different species therefore occupy different ecological niches.
Together, they form an army of natural predators.
This is why the presence of spiders in a paddy field or vegetable plot should not automatically be interpreted as something undesirable. On the contrary, their presence may be an indication that a functioning predator community is at work.
Nanayakkara’s own publication, An Introduction to Common Spiders of Sri Lanka, was designed partly to introduce the public and research community to these frequently overlooked animals.
The book covers spider morphology, natural history and Sri Lankan spider families, while highlighting their importance as biological control agents and bioindicators.
- Genus -Sason
- Chilobrachy jonitriantisvansickelei
The invisible service
There is an important ecological service taking place every day that does not appear on an agricultural balance sheet.
A spider catches an insect.
Then another.
And another.
Multiply that interaction by thousands of spiders across thousands of hectares and the ecological significance becomes enormous.
Unlike a pesticide, a spider does not need to be manufactured, transported, mixed or sprayed. It does not require a farmer to purchase another container or return to the field with a spray machine.
It simply performs its ecological role.
That does not mean spiders can replace all forms of pest management. Rather, they can form one component of integrated pest management, in which natural predators, parasites, cultural practices and carefully targeted interventions work together.
The objective should not necessarily be to create an agricultural landscape in which every insect disappears.
It should be to create one in which pest populations are kept below damaging levels through a functioning ecological system.
When pesticides kill the allies
This is where the story takes a darker turn.
Broad-spectrum insecticides are designed to kill insects, but the ecological world does not always recognise the distinction between a farmer’s target species and a beneficial predator.
When chemicals are applied indiscriminately, spiders and other predatory arthropods can also be affected.
The consequences can be surprisingly complex.
A pesticide application may reduce a crop pest rapidly. But if it simultaneously reduces the predators that feed on that pest, the field may lose part of its natural defence system.
As surviving pest populations recover, farmers may again reach for the sprayer.
The result can become a vicious circle: fewer natural predators, greater reliance on chemicals and repeated disruption of the ecological relationships that once helped regulate pest populations.
Pesticides can also move beyond the field through runoff, spray drift and other pathways, potentially affecting surrounding vegetation, wetlands and waterways.
The real cost of chemical-intensive agriculture, therefore, cannot always be measured simply by the price of a bottle of pesticide.
There can be an ecological cost that remains invisible.
A paddy field is more than a crop
Sri Lanka’s paddy fields are often viewed through the lens of production: acreage, yield, irrigation, fertiliser and harvest.
But look more closely and another world emerges.
Between the rice plants are insects. In the water are aquatic organisms. Along the bunds are grasses and other vegetation. Amphibians move through the landscape. Birds forage. Reptiles pass through.
Microorganisms work beneath the surface.
And somewhere among the vegetation, spiders wait.
The paddy field is therefore not simply a food-production unit. It is an ecosystem.
Field margins, bunds, grasses and neighbouring vegetation can provide shelter and alternative habitat for spiders and other beneficial organisms. Maintaining this ecological complexity can help predator populations persist and recolonise cultivated areas.
Destroying those refuges or exposing them repeatedly to chemicals can simplify the ecosystem and weaken its natural resilience.
The spectacular world of tiger spiders
If ordinary garden spiders are largely invisible to the public, Sri Lanka’s tarantulas are impossible to ignore.
The genus Poecilotheria, commonly known as tiger spiders or ornamental tarantulas, includes some of the island’s most spectacular arachnids.
Their intricate patterns, extraordinary size and specialised lifestyles have made them subjects of scientific fascination.
Nanayakkara’s work brought international attention to this hidden world.
One of the best-known examples is Poecilotheria rajaei, a tarantula described from northern Sri Lanka after specimens were encountered during field surveys. The species was formally described in 2012 by Ranil Nanayakkara and co-authors.
The story illustrates something important about biodiversity research: discovery does not necessarily begin in a sophisticated laboratory.
Sometimes it begins in a forest.
Sometimes it begins with a local observation.
And sometimes it begins when a field researcher is willing to look closely at something that most people would rather avoid.
Another remarkable chapter came with Poecilotheria srilankensis, described from Belihuloya in 2019. The research documented another arboreal tarantula from Sri Lanka and added to understanding of the island’s highly distinctive Poecilotheria fauna.
Nanayakkara and his collaborators have also documented Chilobrachys jonitriantisvansickleae, a tarantula associated with a fragmented forest patch in Sri Lanka’s wet zone.
These discoveries are not merely additions to a scientific list.
Each species raises questions.
Where does it live?
What does it eat?
How large is its population?
What habitat does it require?
How isolated are its populations?
What happens when its forest disappears?
The blue surprise in the forest
Perhaps nothing illustrates the richness of this hidden world better than the discovery of a striking blue tarantula in Sri Lanka’s rainforests.
The species, Chilobrachys jonitriantisvansickleae, was found in an isolated patch of southwestern rainforest surrounded by tea and rubber plantations. Its vivid blue colouring helped attract attention to an animal living in a highly fragmented landscape.
It is an important reminder that biodiversity does not always survive in vast wildernesses.
Sometimes it survives in small fragments.
And when a species is closely associated with a particular habitat, the destruction of even a relatively small area can have disproportionate consequences.
Beyond fear
One of Nanayakkara’s important contributions has been to make spiders accessible to people who may otherwise never look beyond their reputation.
His books, including An Introduction to Common Spiders of Sri Lanka and Poecilotheria – “Tiger Spiders” of Sri Lanka, have helped bring information about these animals to a wider audience. His Tiger Spiders of Sri Lanka focuses on the identification, habitats, behaviour and conservation of Poecilotheria.
The challenge is not simply scientific.
It is cultural.
For generations, spiders have often been associated with fear, danger and something that should immediately be killed.
But understanding changes attitudes.
Once a spider is seen as a predator rather than a pest, its role begins to look different.
Once a tarantula is understood as a specialised inhabitant of a particular forest habitat, destroying that habitat becomes a conservation issue rather than merely a matter of removing an unpleasant creature.
Small predators, enormous consequences
Spiders are also prey.
Birds, amphibians, reptiles and other animals depend on arthropods as part of their diets. Spiders consequently occupy several positions in food webs: they are predators of insects and, in turn, food for other animals.
Their disappearance can therefore create effects that travel through an ecosystem.
This is why biodiversity conservation cannot focus exclusively on elephants, leopards, birds or other charismatic wildlife.
The ecological machinery of a forest is also made up of creatures that are small, obscure and rarely photographed.
Some may never make the headlines.
But remove enough of them and the system changes.
A call to look closer
Sri Lanka still has much to learn about its spiders.
Taxonomy remains fundamental. Before conservationists can determine how a species is faring, they need to know what species exist, where they occur and how they differ from one another.
Field research is equally important because many species cannot be understood simply by examining specimens in collections.
Their habitats, behaviour, prey, reproduction and relationships with other organisms all matter.
Nanayakkara’s research illustrates the value of this patient field-based approach. His work has contributed to the documentation of Sri Lanka’s lesser-known biodiversity and to the scientific understanding of spiders that had previously received little attention.
But perhaps the larger lesson is even simpler.
Nature does not waste species.
The spider spinning a web beside a paddy field, the hunter moving through the undergrowth and the spectacular tarantula hidden in a forest tree are all pieces of a much larger ecological puzzle.
Protect the predators
Conserving spiders does not mean protecting every individual spider from every natural threat.
It means protecting the ecosystems that allow spider populations to survive.
It means reducing unnecessary pesticide use.
It means encouraging integrated pest management.
It means maintaining vegetation around agricultural fields, protecting forest fragments and conserving wetlands and streams.
It means giving farmers the knowledge to recognise that some of the creatures living among their crops are not enemies at all.
They are allies.
For Sri Lanka, there is another urgent reason to look more closely.
The island’s biodiversity is exceptional, but its habitats are increasingly fragmented and altered. The loss of specialised habitat can be particularly serious for species with narrow ecological requirements.
The work of researchers such as Dr. Ranil Nanayakkara reminds us that discovery and conservation are inseparable.
We cannot protect what we do not know.
And we cannot appreciate what we have never learned to see.
The next time a spider appears in a garden, on a paddy bund or quietly beneath a leaf, perhaps it deserves something more than a broom or a spray can.
It may be doing what nature designed it to do—hunting, regulating and maintaining balance.
For millions of years, spiders have been doing this work without asking for recognition.
Perhaps it is time we gave them some.
When we protect the predators, we protect the balance.
Features
West Asian conflict undergoing manifold complications
Israeli Prime Minister Benjamin Netanyahu’s message to Israel’s enemies was blunt and stark.‘We’re going to win; we have no choice.’ He said so while the majority of attendees at a recent UN General Assembly session walked out of the conference hall when the Israeli Prime Minister took the podium; many of them booing in derision.
Those commentators who have been studying Israel’s handling of her enemy states over the decades are unlikely to dismiss the entirety of Netanyahu’s address as rhetoric. The general pattern has been for the Israeli state to stand up firmly against its enemies in the battle field. On most occasions, these adversaries have been beaten back.
It is also little realized in particularly the Southern hemisphere that Israel, for the most part, could defend herself without much US assistance. The history of the conflict bears this out.
However, from the viewpoint of working towards a just and equitable peace in the Middle East the Israeli hard line stance has proved and will prove incalculably detrimental. The sworn enemies of Israel are not going to be in any way deterred by Netanyahu’s stark warnings. On the other hand, they would be only further provoked into taking on Israel by conventional or unconventional military means and seek its destruction.
The recent aborted mid-air hijacking of a Flydubai flight, consisting mainly of Israeli passengers, by an Omani extremist drives home the point. Israel’s enemies are bound to redouble their efforts to annihilate Israel rather than be deterred by the latter’s warnings about standing firm against them. This too history has proved.
It would be in the fitness of things at this juncture to pay a tribute to the professionalism, courage and humanity of the relevant airline pilot, Captain Machchhar, whose timely action proved decisive in botching the hijack attempt. His intervention averted what could very well have been another 9/11 type tragedy. History is not going to forget his daring and resourcefulness.
Meanwhile, the ground realities in West Asia are undergoing further complications that portend increasing regional instability. For example at the time of writing Turkiye, Pakistan and Saudi Arabia have agreed under the recently established ‘Mecca Alliance for Defence’ to deploy ‘deterrence measures’ collectively in the event of any member of the alliance coming under military strikes from a non-member state.
The agreement is modeled on the NATO collective defence pact and should help in defusing any threat perceptions experienced by the alliance members in the short term. However, the group would need to be cognizant of the major and potentially divisive role Iran could play in the interstate politics of the Middle East region going forward.
Iran’s reported support, for example, for Yemen’s Houthi rebels, who are engaged in attacking Saudi national assets, could at some point in time compel the alliance, under the terms of the pact, to initiate deterrent military measures against Iran.
The implications for regional peace from such a turn of events hardly require elaboration. A full blown regional war emerges as a distinct possibility if Iran sees itself as being excessively antagonized by the alliance. A further complication is that antagonistic sectarian identities of an Islamic kind could come to play hugely divisive roles in it. Shiite Islamic states would be inclined to back Iran while those countries seen as Sunni Islamic in orientation are bound to support Saudi Arabia.
Accordingly, West Asia is a region rife with manifold aggravated insecurities. If the latter are not defused dexterously they could escalate into a conflict of extra regional dimensions. The latter development would render the world a collective loser.
Unfortunately, no constructive help could be expected from the US at this juncture by way of working towards regional and international peace even of short durance. Its war against Iran has only aggravated the world’s current insecurities.
For example, the world has been compelled to face the possibility of compounded economic woes as a consequence of the Hormuz crisis remaining unresolved. The world is currently experiencing what could be seen as a ‘winter of economic discontent’ of unprecedented proportions.
Unfortunately, the international community is to all intents and purposes helpless in the face of this multifaceted crisis. Substantial intervention is expected of the UN but since it has failed to reform itself over the years it is compelled to stand idly by while the world’s insecurities heighten and multiply.
Yet, it is the seemingly paralyzed UN system that has some potential to contain the current tide of international disorder to even a small measure. Given the persisting divergent and conflicting interests among the world’s principal power blocs, the G7 and BRICS for instance, it is mainly the UN and its principal agencies that could carry some credibility as peace brokers and mediators.
However, as an initial step towards bringing the principal protagonists to the negotiating table the UN would need to convince the principal powers of the UN Security Council of the need for a substantive broad-basing of the membership of the Council so as to reflect more accurately the current global political and economic realities. Such reforms would render the Council more representative and help in strengthening its credibility and effectiveness.
The above reforms call for years of dynamism, hard work and resourcefulness on the part of the international community, read the UN. Yet the aims are not impossible to achieve if strong leadership is brought to bear by the UN.
Meanwhile, the UN agencies and allied organizations need to pay stepped-up attention to the West Asian theatre and its wasting conflicts and wars. Here too there is immense hard work to be put in.
There is, for instance, identity politics and its issues that need to be managed urgently. While internal political matters of countries could not be addressed directly by UN agencies, awareness-raising programs and projects could be energetically carried out by them to blunt the appeal of identity-based slogans, relating to, for instance, religion and race.
Besides, values at the heart of democratic politics need to be freshly and enthusiastically propagated. Vast reserves of energy and resources are needed, to be sure, to consistently champion and implement these crucial projects but they need to be pursued single-mindedly if even a dent is to be made in the current runaway global disorder.
The aborted hijacking of the Flydubai flight pointed to the dehumanizing impact of identity politics on the human consciousness. It was also an indication that those sections endowed with humanity cannot stand idly by while identity politics continues to destroy civilizational values. The time to act is ‘now’.
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