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die-off

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die-off (dôf, -f)
n.
The elimination of a species, population, or community of plants or animals as a result of natural causes.
die-off  (dôf)
A sudden, severe decline in a population or community of organisms as a result of natural causes. Local die-offs can be caused by such factors as an unusual or extreme weather pattern, an outbreak of disease, or toxic algal blooms in a body of water. Widespread or global die-offs in which a species or group of species becomes extinct are generally associated with rapid climate change or other large-scale environmental dislocations.
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Some scientists have theorized that a single, large asteroid may have hit the Yucatan Peninsula in present-day Mexico, sparking the die-off.
Dinos bite the dust by Hennessey, Gail / Science World
The only" exception is the die-off of mammals between 50,000 and 45,000 years ago, the team reports in the January Geology.
Going under down under: early people at fault in Australian ... by Perkins, S. / Science News
A distant relative of the common domestic ferret, the wild black-footed ferret of North America is endangered, in large part because of the mass die-off of its main food source--prairie dogs--at the hands of poisoning, shootings and diseases (see "Open Season on Varmints," cover story, July/August 2004).
Becoming ferret-friendly by Brown, Chris / E
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