GENERAL NOTICE

NOTICE 1095 OF 1997

WHITE PAPER ON THE CONSERVATION AND SUSTAINABLE USE OF SOUTH AFRICA'S BIOLOGICAL DIVERSITY

May 1997

Draft for Discussion

Department of Environmental Affairs and Tourism

 
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Please note that comments on this document should be made in writing by or before 29 AUGUST 1997 to the following address:


Table of Contents

STEPS IN THE POLICY FORMULATION PROCESS

WHAT IS BIODIVERSITY?

CHAPTER 1 - INTRODUCTION

CHAPTER 2 - THE VISION, MISSION AND PRINCIPLES GUIDING A BIODIVERSITY POLICY AND STRATEGY FOR SOUTH AFRICA CHAPTER 3 - A BIODIVERSITY POLICY AND STRATEGY FOR SOUTH AFRICA CHAPTER 4. IMPLEMENTING THE POLICY APPENDICES

STEPS IN THE POLICY FORMULATION PROCESS


WHAT IS BIODIVERSITY?

Biological diversity - or "biodiversity" - is the number and variety of living organisms on earth, the millions of plants, animals, and microorganisms, the genes they contain, the evolutionary history and potential they encompass, and the ecosystems, ecological processes, and landscapes of which they are integral parts. Biodiversity thus refers to the life-support systems and natural resources upon which we depend.

There are three main components of biodiversity:

GENETIC DIVERSITY

Genes are the biochemical packages that are passed on by parents to their offspring, and which determine the physical and biochemical characteristics of offspring. Genetic diversity refers to the variation of genes within species, making it possible to develop new breeds of crop plants and domestic animals, and allowing species in the wild to adapt to changing conditions.

SPECIES DIVERSITY

A species is a group of plants, animals, microorganisms, or other living organisms that are morphologically similar; that share inheritance from common ancestry; or whose genes are so similar that they can breed together and produce fertile offspring. Usually different species look different.

Species diversity refers to the variety and abundance of species within a geographic area. Often the term "species richness" is used as a measure of species diversity, but this refers only to the number of species within a region, and thus technically only one component of diversity.

ECOSYSTEM DIVERSITY

An ecosystem consists of communities of plants, animals and microorganisms, and the soil, water, and air on which they depend. These all interact in a complex way, contributing to processes on which all life depends such as the water cycle, energy flow, the provision of oxygen, soil formation and nutrient cycling. Ecosystem diversity can refer to the variety of ecosystems found within a certain political or geographical boundary, or to the variety of species within different ecosystems.

Another level of diversity which is sometimes included in the definition of biodiversity is LANDSCAPE DIVERSITY. A landscape is a collection of elements which consists of defined assemblages of plants, animals, abiotic substrata such as rocks, land-use patterns, as well as cultural or scenic features and socio-economic and political dynamics. For example, wetlands, fragments of forest, mountains, or rocky shores may comprise landscapes, as may the presence of croplands or religious structures. The boundary of a landscape will vary according to the scale being used and the purpose of the investigation. Landscape diversity refers to the number of landscapes in the geographical area being studied.


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