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Prevention of ecocide

The Englishmen who came to rule India in the early days of the Raj found a veritable Garden of Eden here. One of them wrote home: “Wild pig, porcupine, wild fowl, game fowl and other animals, dear to the sportsman, are to be met with in incredible numbers.” The Englishman and the Maharaja, riding on elephants, sitting in machans, driving automobiles and in fact using every means of relative safety for themselves, blasted off.

Dr Salim Ali, our most renowned ornithologist whose voice is heard with respect and reverence, recalls a conversation he had with the Maharaja of Surguja one day in 1953. The Maharaja, an old man with palsy, bracing his rifle on a stick, was exultantly happy on that day. When asked why, the Maharaja said, “Because I have shot my 1,100th tiger.” Eventually, 1,157 tigers fell at the hands of this Maharaja.

Independence and in its wake improved healthcare, ballooned India’s population to the present 700 million from a mere 80 million at the turn of the century. The hunger for land, a place to live in and upon, became insatiable. Forests shrank incredibly and with them the numbers of wild life dwindled close to near extinction. In the unequal competition between man and beast, the Indian fauna suffered what had been a death blow to some species but thanks to the age-old tradition of concern for the wild life, a new awareness regarding the need to preserve our heritage surfaced and many threatened species got a new chance to survive.

The cheetah that roamed through our scrub jungles and the great Indian bustard that once made Rajasthan proud, are almost extinct. Highly depleted in numbers, this animal and this bird have little chance of survival: they are doomed species. Now comes the welcome news: The Government of India cordoned off a little more than 3,000 sq km in the heart of Thar as part of an effort to save the bustard. Whether we will save the species, only time will tell. The tiger, the lion, the single -horned rhinoceros, the lion-tailed macaque (a monkey) and the wild ass of the Rann of Kutch have earned a reprieve, thanks to the timely efforts of a handful of wild life enthusiasts.

1969 was the year when the International Union for Conservation of Nature held its triennial convocation in New Delhi. More than 100 nations were represented on it and luckily for all concerned, Prime Minister Indira Gandhi inaugurated it. One Indian participant remembers: “From being a catch phrase, wild life became a serious commitment of the government. The ministers got involved; all those who hindered now began to help.” Action followed. Shooting tigers was banned. The Wild Life Protection Act of 1972 was passed and in 1973, with help from World Wild Life Fund, India inaugurated Project Tiger.

New wild life sanctuaries and bird sanctuaries dot the Indian continent now. This new effort has been tersely termed as “too little and too late” by an inveterate pessimist but then even the most optimistic foresee wild life in India confined only to its sanctuaries and no more. However, Dr Karan Singh, who was in charge of the operation, thinks that all is not lost. We may yet win, if the growth of our population is checked. But will it happen?

In the hope that we are as yet not too late, let us embark upon a massive programme of telling our people the importance of and what is more, the need for preserving, the environment in all its manifestations. We must train teams of biologists who would take into account the totality of living objects in an area and devise ways and means that would yield the desired result, without affecting the natural inter specific balance.

For instance, the role of mosquitoes in spreading malaria is very well-known. Most of us remember that the National Malaria Eradication Programme (NMEP) of the Government of India has achieved signal success, and even as we were trumpeting about the successful eradication of malaria, the disease struck again. In the chemical warfare that the NMEP authorities waged against mosquitoes, I am afraid the insects scored a stunning victory.

For a time the mosquitoes died in such numbers that the spread of the malarial parasite was halted and lulled the Government of India into a false sense of security. In the meantime, the few mosquitoes that had a. built-in resistance to DDT and other chemicals that were used against them multiplied and a new race of Anopheles mosquitoes emerged and with it malaria reappeared.

In the process, the large-scale DDT spraying poisoned our crop plants and God knows what unlisted diseases broke out in the population during the active days of DDT warfare against the malarial mosquitoes! Unexpected dangers lurk in dark corners when programmes of this kind are launched.

However, this is not to advocate that the war against mosquitoes be given up. It is to be tempered with a much deeper study of the problem. Mosquito is a common noun denoting a group of insects comprising several species. Many other mosquito-borne diseases are known: dengue, yellow fever, filaria, etc.

Now biologists have discovered a giant African mosquito, Toxorhynchites brevipalpis, which feeds on the larvae of other species. If we could use this mosquito against the known disease-spreading mosquito species, we will be able to eliminate the diseases without introducing into the environment chemicals that might prove inimical to other forms of life, albeit along with the mosquito. This approach of biological control of the spread of disease keeps a biome as near to a natural state as possible, without introducing extraneous elements. New man­made dangers do not arise.

This brings me on to the ecosystems in which Nature functions. The physico­chemical components together with the many forms of living objects that inhabit an area form an ecosystem. Within an ecosystem, a balance is struck between primary producers and the consumers, primary, secondary and tertiary. Predators and prey coexist in correct numbers; neither is too many, The constituent populations within an eco­system tend to remain constant. It is this constancy of the populations that comprise it which gives the ecosystem a quality of timelessness. Forests, grasslands, deserts, ponds, inter-tidal zones, the sea, all these represent different ecosystems. Within an ecosystem, the constituent members exhibit a high degree of mutalism. In the long run, what affects one component affects the others too. There are many reasons for this.

Primarily, all the living objects are sustained by the Sun. All of them interact with the same kind of edaphic environment. They feed upon one another, supplementing and complementing each other’s needs for, all of them have basically identical metabolic pathways.

Earlier, I said that a kind of timelessness characterises an ecosystem and that this is achieved by balancing the interactions within its heterogeneous populations. Human interference changed all this. The heterogeneity of population within an ecosystem has been displaced by an imposed homogeneity. Monoculture has become the order of several biological communities with the advent of agriculture.

Situations that reflected balance achieved through hundreds of years of Nature at work changed drastically and all the resources of the environment were sought to be harnessed in favour of a single species. The relevance of the species to human needs was the only criterion examined while man moved along his path to greater comfort, an attempt that earned for itself the sobriquet of civilisation.

The civilised man indulged in unchecked ecocide, cutting down forests, damming rivers, blasting mountainsides, letting lose animals that grazed away the last blade of grass, killing animals that predated upon animals which he tended and thus he eroded into the timelessness of the ecosystem around him.

As a result, many animal and plant species that once dotted the surface of the earth have disappeared altogether. In America, the bison that once moved in herds so large that a horse-rider who started his journey with daybreak could not reach its front end by dusk time, is now confined to the protective custody of a few sanctuaries. The tiger in India has been saved in the nick of time. When I first joined in the profession way back in 1947, the sidewalks of Madras were full of a plant called Rauwolfia canescens: now it is so rare. How did it happen? In the mid-fifties a drug called serpalin, good to control high BP, had been extracted from Rauwolfia serpentina, a denizen of the forests. Finding it not so easy to collect the Sarpagandhi as R. serpentina is called, they turned to R. canescens and finding it almost as good as R. serpentina drove it out of Madras.

This is the kind of unthinking approach to problems that afflict human welfare, that is at the bottom of the disappearance of several species of plants and animals. If we remember that each species represents a gene pool that may come in handy to serve some human need one time or another, we cannot be so callous. In his preoccupation with his own survival, man is destroying the tropical rain forest at the rate of 50 acres every minute of the day.

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The tropical rain forest is an ecosystem that emerged as a result of thousands of years of interactions between a large horde of biological species and environment. It is the home of hundreds of species, When we seek to destroy it, we do not know what species we destroy and in the bargain we will not even be aware of what gene pool that one day might prove immensely beneficial to man we stand to lose for ever.

In a thousand years, we will not get back a patch of tropical rain forest, for the changes that lead to its formation occur with extraordinary slowness. It is for this reason that the ecologists and the environmentalists raised a hue and cry when in a fit of shortsightedness, the authorities that be sought to destroy the Silent Valley forests.

The civilised man must become a cultured man. He needs to know that. there is some use or the other for the lowliest of the low organisms. Wholesale displacement of an environment will in the long run prove catastrophic, whole gene pools disappearing forever. He survives only by letting other organisms survive, for no organism lives alone.

(A radio talk broadcast on 10th November 1981 in the Series ‘For the Universities’ AIR, Madras) Reproduced from a collection of articles called 'Flowers and Showers'.

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Published on 10th May, 2004

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Prof K N Rao
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