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 plots were established in ten small farms of family farmers, where each one has one hectare of biodiverse AFS, aged four years, established in an abandoned pasture area, with the purpose of recovering unproductive areas, and the designs of these systems were defined in a participatory manner between Technical Assistance and Rural Extension professionals and farmers.
Haatela et al conclude that chronic inflammatory disease is a disease of urbanization, a result of less exposure to a biodiverse natural environment, changed diet, and sedentary lifestyle: "Loss of environmental biodiversity leads to reduced human microbiota (dysbiosis), immune dysfunction (poor tolerance), inappropriate inflammatory responses and finally symptoms and disease." They call for better environmental protection and urban planning as a means of managing allergy risk and management.
In his talk, ˜Wastelands and Wilderness: Nuclear Lands,' Galison talked about how some of our most contaminated sites because of nuclear waste and accidents have become some of our most biodiverse lands.
The campaign was launched in 2012 to boost the number of indigenous trees, engage volunteers and raise awareness on the important role local species play in Oman's biodiverse environments.
It's one of the RSPB's best sites and the area is the most biodiverse region in the UK.
The Democratic Republic of Congo is Africa's most biodiverse country.
These too highlight the good water quality as do local bird species from cormorants to kittiwakes and oystercatchers, indicating that the southern North Sea is abundant and biodiverse with marine life."
Whether tackling the thorny question of GMO safety or criticizing the impact of big agribusiness on traditional communities, these women are in the vanguard of defending the right of people everywhere to practice local, biodiverse, and organic farming as an alternative to industrial agriculture.
"Although gold mining deforestation is usually less extensive than deforestation for agriculture, it happens in some of the most biodiverse tropical regions," Nora Alvarez-Berrios of the University of Puerto Rico-Rio Piedras, and a lead author of the study, told Agence France Presse.
The online encyclopedia is organized into themes including Art and Design, History and Culture, Science and Technology, Mysteries of the Universe, A Biodiverse Planet, World Cultures, and The American Experience.
The environmentally friendly area features tree-lined boardwalks, rain gardens and other biodiverse vegetation.
Services such as clean water for us and wildlife; healthy air, sequestering carbon, as yet undiscovered medical benefits, and, not the least, the deep peace that is found in wild places such as these biodiverse forests."

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