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 world's most biodiverse countries - Brazil, Colombia, Indonesia, China, Mexico, Peru, Australia, India, Ecuador and Venezuela - are tropical or semi-tropical, and rapidly urbanising.
Yasuni is one of the most biodiverse places in the world and home to indigenous peoples.
Researchers at Wake Forest University are developing small, insect-like drones to explore the Peruvian cloud forest, an area about the size of the continental United States and believed to be one of the most biodiverse places on Earth.
On 7 November, the Portuguese project Sown biodiverse pastures' took home the prize for the World You Like Challenge organised by the European Commission.
Ecuador is moving to open an Amazon national park, one of the most biodiverse areas in the world, for oil drilling.
Far from the planet "dying" as global warming hoax pushers claim, it was one of the most lush and biodiverse times in our planet's history.
The project will give trainees the skills they need to manage urban areas for wildlife, creating attractive and biodiverse environments in towns and cities.
The project will give groups of trainees the skills they need to manage urban areas for wildlife, creating attractive and biodiverse environments within the county's towns and cities.
Elena Couce said: "If sea surface temperatures continue to rise, our models predict a large habitat collapse in the tropical western Pacific which would affect some of the most biodiverse coral reefs in the world.
The forest is known for being the most biodiverse in Mexico.
g bees (p 37), with use of toxic pesticides (which have caused more pests to proliferate), soil erosion through using chemical fertilisers, destruction of biodiverse forests and gardens with all their resilience and their replacement by mono-crop plantations, destruction of water resources through logging biodiverse forests and creation of large dams, etc.
All in all, Australian biodiverse carbon forest offsets work harder to help us achieve our ultimate goal - climate change mitigation.

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