Sentences with phrase «biologists estimated the population»

Last year, FWS biologists estimated the population of Mexican wolves at 109 animals, the highest it's been since reintroduction and double its size in 2010.

Not exact matches

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.

National Park Service biologist Doug Smith estimates that poachers kill up to 10 percent of the population in the greater Yellowstone area each year.

That's the central question behind a University of Arkansas biologist's three - year, $ 465,098 study to test a new method for estimating population densities of two species of rare snakes.

Research biologist, John Calambokidis, discused his work tracking the movements and estimating the populations of blue and humpback whales in the North Pacific at the May «From Shore to Sea» lecture.

David Kline, a biologist from the U.S. Fish and Wildlife Service, visited St. Matthew in 1957 and found a thriving population of an estimated 1350 reindeer.

At the time, Harvard biologist George Wald estimated that civilization would end «within 15 or 30 years unless immediate action is taken against problems facing mankind» while Paul Ehrlich warned that population would «inevitably and completely outstrip whatever small increases in food supplies we make,» and that therefore the death rate would increase «until at least 100 - 200 million people per year will be starving to death during the next ten years.»