However, there may be specimens still alive in unsurveyed areas.
2.
Botanists are hopeful that there are many more than 250 plants remaining in unsurveyed areas of the island.
3.
On previously unsurveyed areas of the ice sheet's periphery, the scientists found that large expanses had thinned by nearly eight inches a year.
4.
Through analysis of these quantifiable attributes from land that has undergone archaeological survey, sometimes the " archaeological sensitivity " of unsurveyed areas can be anticipated based on the natural proxies in those areas.
5.
Researchers used data about adult female populations from three surveys ( one in each of Argentina, South Africa and Australia, collected during the 1990s ) and extrapolated to include unsurveyed areas, number of males and calves using available male : female and adult : calf ratios to give an estimated 1999 figure of 7, 500 animals.