Question

essay on extinction of wildlife​

Answer 1

Answer:

ESSAY ON WILD LIFE

Explanation:

Wild” animals are those that live independently of man and characteristical­ly resist his interference with aggression or avoidance.” Wildness” in itself, of course, exists only in the mind of man; it is not a property of nature.

The mounting pressure of the rapidly-increasing global populations of human and their domestic animals and plants is one of the major causes of our declining wildlife resources. One highly disturbing aspect of the ever-grow­ing human population is that such growth occurs at the expense of the world’s wildlife storehouse.

Dining the course of natural evolution, some existing species become extinct and others are evolved. The natural turnover rates for various groups of plants and animals vary but some recent estimates suggest the following figures (see Westing, 1981)

Birds, about 8,600 species exist today; the natural turnover rate is about 1 per 230 years. Mammals, about 4,200 species exist today; the natural turnover rate is about 1 per 140 years. As against these fairly low natural rates, during the last three decades alone some 95 species of birds and 37 of mammals have become extinct. Today some 200 species of birds and 100 of mammals are facing serious threats of extinction (Myers, 1979).

One of the most interesting and curious of the carnivorous marsupials, viz., Thylacinus cynocephalus or the “Tasmanian Tiger” is now believed to be extinct. This animal combined a wolfish head with a tiger’s stripes, a snake’s gape, a kangaroo’s tail, plus a unique rear-opening pouch. The cause of its extinction was the merciless hunting by sheep farmers in Tasmania who were infuriated by the animals hunting their sheep.

The most common cause of biotic extinction seems to be habitat alter­ation. Any natural habitat that is tampered with or used by man for his own purposes tends to become less suitable or unsuitable for the native wild species. Westing (1981) est: mated that once every three years the global human population increases by some 215-225 million people at the expense of one species of wild bird or mammal plus at least one species of some group of plants or animals.

In recent years there has been a growing awareness in many countries to conserve wildlife. To achieve this objective, many countries have banned trade in endangered species (or their products) such as the African Elephant (till hitherto widely hunted for ivory), the chimpanzee, the cheetahs, various species of parrots, and certain fur-yielding animals. In India, attempts are being made to save the bustard (Chlamydotis undulata), snakes, lizards, pheasants, and other animals from serious declines in their population sizes.

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