background extinction

(redirected from Background extinction rate)
Also found in: Dictionary, Wikipedia.

background extinction

[′bak‚grau̇nd ik‚stiŋk·shən]
(evolution)
Intervals of lower extinction intensity between mass extinctions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The team purposefully used a lower estimate for the values to see if even the lowest difference between current and background extinction rates affirmed an advancing mass extinction.
Even this five-fold increase in background extinction rates, however, vastly understates the magnitude of the current extinction event because it is derived only from extinction of species known to science.
Full browser ?