Recent debate has shown disenchantement over the capacity of technology to provide solutions to current and future development problems, and this has led to questioning the value of scientific research itself, including that in the environmental field. The paper describes the objectives and approach of the Man and the Biosphere Programme (MAB), which was launched by UNESCO in 1971 as a major solution to important environmental and resources problems.

Centred around 14 research themes relating to human interactions with major ecosystems, MAB activities are focused particularly on regional networks of integrated pilot projects, combining interdisciplinary research, demonstration, training, and education. Many of these pilot projects are associated with ‘Biosphere Reserves’, which provide a new tool for ecosystems conservation. As an example of this approach, which involves cooperation of research workers of various disciplines with decision makers and with the populations concerned, the paper describes the MAB network dealing with the problems of the humid tropics, which is now fully operational. While indicating the difficulties encountered, it stresses the merits of this new approach in filling existing knowledge-gaps, in ensuring social and economic applicability of the results achieved, and in allowing fruitful cooperation between developed and developing countries.

The World Conservation Strategy stresses the maintenance of essential ecological processes and life-support systems, preservation of genetic diversity, and sustainable use of species and ecosystems—in brief, the integration of conservation with development. The present paper traces shifts in conservation policy, which originnally saw national parks as islands isolated from their surrounding communities, through to the evolving concept of protected areas integrated with development programmes. It stresses the need for protected areas, and notes that only about 2% of the world's continental land-mass can be so classified. It is thereofre imperative for the survival of Nature and Man that a closer linkage be established between protection and development functions in such a way that both are seen as essential from a social and economic viewpoint.

The continuing exploitive pressures on living natural resources are noted, and suggestions are made towards mitigating the impact of armed conflict and increasing financing for protected areas in order to achieve conservation and development objectives.

Basically through population pressures leading to habitat encroachment and commercial slaughter, India is becoming poorer, day be day, in her still-rich heritage of wildlife. Virgin forests on the plains and in the hilly regions are dwindling. Unfortunately, education and research centres have not cared to educate the youth of the country about the importance of nature conservation.

The Author's field endeavours, extending over more than a decade, have helped to reveal that 18 of India's 27 threatened mammalian species—lion-tailed Macaque, Macaque, Nilgiri Langur, Golden Langur, Snub-nosed Langur, Wolf, Asiatic Wild Dog, Malabar Large-spotted Civet, Clouded Leopard, Indian Tiger, Leopard, Snow Leopard, Asian Elephant, Sumatran Rhinoceros, Kashmir Stag, Gaur, Wild Yak, Nilgiri Tahr, and Markhor—have their homes in hilly or montane habitats. Pradoxically, India has the dubious distinction of ranking second in the world, and first among the 15 countries of the Oriental region, in having 27 mammalian species whose world populations are to some extent threatened according to the Red Data Book (IUCN, 1972).

While developed countries of the world are expressing growing concern about the plight of tropical rain-forests, it is necessary to understand the issues involved. They are not merely populaton growth, the world food problems, and the ever-growing demand for natural resources, but also environmental ethics and the attitudes of resource managers and other decision-makers. These last issues might be even more important in the long run than purely demographic and socio-economic problems.

The Author of this essay attempts to build up a case for the need of a global environmental ethic which would incorporate existing values of respect for living creatures, sacred groves, and sacred animals—such as still survives among the cultures of the less-developed parts of the tropical world. It might well be that the life-styles of strongly vegetarian societies, and the intensive tropical lowland agriculture as practiced in and around irrigated rice-fields in Southeast Asia, could be used as a model for wiser use of renewable natural resources in the lessdeveloped tropical areas.

Conservation and utilization of wildlife resources are not new among our local communities in Nigeria, although the present approach to the management of these resources is very recent. Modern technology, urbanization, and human population expansion, have caused the destruction of many indigenous animal and plant species in Nigeria.

This paper highlights the recent developments in the overall conservation programme in Nigeria. It describes the important role which wildlife is playing in helping to feed the nation, in creating employment opportunities, in education, in research, in recreation, and in local medicine. Inadequacy of Nigerian wildlife legislation and of trained manpower to protect and manage the wildlife resources are among the crucial wildlife management problems identified in this paper. It is also stressed that the basic information for effective management is often lacking where Nigerian wildlife reserves are concerned.

The overall objective of development should be to improve the quality of people's lives, yet economic development without due environmental protection commonly leads to ecological or environmental impacts which have the reverse effect of reducing the quality of human life. A table showing some of the major environmental impacts that can result from uncontrolled rural development is presented to illustrate the fact that developmental activities with no environmental protection can be very seriously detrimental to the rural environment. Therefore, an environmental impact assessment, both short-term and long-term in scope, should be made of any major development scheme as a basis for drawing up strategies for minimizing undesirable impacts. Although a number of techniques are available for such impact assessment, the checklist and matrix approaches appear to be the most suitable for use in Southeast Asia, where impact studies are only just beginning to be introduced.