biodiversity

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biodiversity

(bī′ō-dĭ-vûr′sĭ-tē)
n.
1. The number and variety of species found within a specified geographic region.
2. The variability among living organisms on the earth, including the variability within and between species and within and between ecosystems.

biodiversity

The existence of complex flora and fauna in an ecosystem; the genetic diversity of natural organisms. Biodiversity increases the overall productivity of a plot of land, and maximises its resistance to disturbances—e.g., drought. In prairie ecosystems stressed by drought, recovery to a normal state of productivity was more rapid in experimental plots of vegetation with the greatest biodiversity, a finding that supports the need to maintain biodiversity.

Loss of biodiversity—i.e., a reduction in the number of species, subspecies and strains—will be disastrous for the planet's ecosystem. An example would be growing a crop food, e.g., corn or rice, from only one highly productive, rapid-growing, spoil-resistant strain—while seemingly having all the desirable features, if the strain became susceptible to a particular pathogen, all those dependent on the crop could face famine.

Marine biodiversity may be in a state of ecological crisis due to coastal development—e.g., destruction of estuaries, motorised marine vessels, ocean dumping, oil spills, overfishing with trawling of the ocean floor and subsequent disruption of bottom communities and coral reefs, overwhaling, pollutant runoffs, and toxic tides due to eutrophication.

biodiversity

see DIVERSITY.
References in periodicals archive ?
The committee would not only work for the preservation and protection of wildlife but would also suggest measures to further improve bio-diversity of Margalla Hills National Park.
But] the total size of the ant fauna [in the entire Philippines] is no doubt much larger,' said the scientists who bewailed the fact that studies of the country's real bio-diversity profile have remained spotty.
The children helped plant up a 'pollinator garden' at the university's Henderson Hall site within Cochrane Park Zoe added: "The bio-diversity initiative has seen a great deal of enthusiasm from staff and students.
Through the Paryavaran Mitra (Friends of Environment) Project, which organises activities at 200,000 schools across India, Sarabhai said he aims to guide, facilitate and capacity-build students, who he feels need to be made aware of the growing challenges in such fields as water, bio-diversity, culture and waste management.
Environmentalists are absolutely certain that the greatest bio-diversity occurs on field boundaries and areas where land under management meets land that is not managed - and that these relatively small, un-farmed areas, yield enormous benefits because they encourage a greater variety of plant and wildlife than is seen in any other part of a farm.
Muscat: A three-day conference organised by the Ministry of Education in cooperation with the United Nations Educational, Scientific and Cultural Organisation (Unesco) presented several working papers to promote the cultural and bio-diversity, yesterday.
The IFAD will present a $3 million grant to finance a bio-diversity project and transfer technology to fight climate change.
It adds value to the many achievements made by the Kingdom of Bahrain and takes international implications by being opened in 2010, the year considered by the United Nations as the International Year of Bio-diversity, he said.
The international community decided to set up seed bank, frequently known as gene banks, as a response to the loss of bio-diversity.
Here bio-diversity and fun meet and inspiration and learning go hand in hand.
A local authority event on Tuesday also celebrates the official launch of seven walking leaflets and coincides with Wales Bio-diversity week, which aims to encourage people to get outside and experience local wildlife.
To combat that the tree was made a central part of the County Durham bio-diversity action plan and a number of tree nurseries were set up.