Sentences with phrase «extrapolating whale populations»
Norway will itself update its population estimates in July with a «sighting survey», an approved method of extrapolating whale populations from the number spotted from ships.
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Finally, the team calculated that the dozen observed killer whale attacks on otters, extrapolated to the general population, could account entirely for the observed declines.
Most estimates of historic whale population size have been extrapolated from old whaling figures, but this method is often very inaccurate, argues marine biologist Steve Palumbi of Stanford University's Hopkins Marine Station in California, US.