biological diversity


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Related to biological diversity: Convention on Biological Diversity

biological diversity

or

biodiversity,

the number of species in a given habitat. Scientists have variously estimated that there are from 3 to 30 million extant species, of which 2.5 million have been classified, including 900,000 insects, 41,000 vertebrates, and 250,000 plants; the remainder are invertebrates, fungi, algae, and microorganisms. Although other species remain to be discovered, many are becoming extinct through deforestation, pollution, and human settlement. Much of this diversity is found in the world's tropical areas, particularly in the forestforest,
a dense growth of trees, together with other plants, covering a large area of land. The science concerned with the study, preservation, and management of forests is forestry.
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 regions. A habitat in equilibrium has a balance between the number of species present and its resources. Diversity is affected by resources, productivity, and climate. The more pristine a diverse habitat, the better chance it has to survive a change or threat—either natural or human—because that change can be balanced by an adjustment elsewhere in the community; damaged habitats may be destroyed by breaking the food chain with removal of a single species. Thus, biological diversity helps prevent extinction of species and helps preserve the balance of nature. At the 1992 United Nations Conference on Environment and DevelopmentUnited Nations Conference on Environment and Development
(UNCED) or Earth Summit,
an 11-day meeting held in June, 1992, in Rio de Janeiro, Brazil, to discuss the global conflict between economic development and environmental protection.
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, more than 150 nations signed a treaty intended to protect the planet's biological diversity. See also ecologyecology,
study of the relationships of organisms to their physical environment and to one another. The study of an individual organism or a single species is termed autecology; the study of groups of organisms is called synecology.
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.

Bibliography

See E. O. Wilson, ed., Biological Diversity (1988); N. Eldredge, Life in the Balance (1998).

References in periodicals archive ?
Stressing that in India the issue of biological diversity conservation was closely linked to the livelihood of the people, he said, "In our country, protecting and promoting biodiversity has always been an integral part of our ethos and our civilization.
Opened for signature at the Earth Summit in Rio de Janeiro in 1992, and entering into force in December 1993, the Convention on Biological Diversity lists three main objectives- the conservation of biological diversity, the sustainable use of its components and the fair and equitable sharing of benefit arising from the utilization of genetic resources.
The Sultanate has signed the Convention on Biological Diversity in the United Nations Conference on Environment and Development (Earth Summit) held in 1992 in
In making the determination, the judge acknowledged that "Canada has ratified the United Nations Convention on the Conservation of Biological Diversity (the Convention) and, therefore, is committed to apply its principles.
The Turkish minister also said his country made remarkable amendments to its laws regarding environment and biological diversity, adding that Turkey had launched many projects under UN Millennium Development Goals.
The Center for Biological Diversity and others have concluded that addressing climate change on the federal level--and greatly reducing the level of greenhouse gas emissions--must be implemented quickly to avoid the greatest risk of species' extinction across the country.
Mehdi Mlika, Chairman of the National Committee of Cleanliness and Environment Aesthetics, was attended by the Executive Secretary of the International Convention on Biological Diversity Ahmed Joghlef and several representatives of active structures in this area.
GOVERNMENT and private schools in Bahrain will plant palm trees and other indigenous trees today in celebration of International Day for Biological Diversity.
conference in the central Japanese city of Nagoya, plans to make the proposal next week at a task force meeting at the conference of parties to the Convention on Biological Diversity in Nairobi.
The Biological Diversity Act 2002 provides for the conservation of biological diversity, sustainable use of its components and equitable sharing of benefits arising out of the use of biological resources.
This has resulted in a range of 'contested terrains' in the years after the Convention on Biological Diversity which came into force in 1993.
Updated chapters conclude with chapter summaries and discussion questions and address successively: biological diversity and its value, threats to biological diversity, conservation at the population and species levels, protection and restoration of ecosystems, and sustainable development.

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