News tagged with population size

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Cheating favors extinction

Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit ...

Apr 30, 2013
4.1 / 5 (16) 70 | with audio podcast

Conserving the endangered pygmy-possum

The Mountain Pygmy-possum (Burramys parvus) is one of five living species of pygmy-possum, all of which are classified within a single family. It is the largest of the pygmy-possums, and can be easily distinguished ...

Apr 30, 2013
5 / 5 (3) 0

Environmental change triggers rapid evolution

A University of Leeds-led study, published in the journal Ecology Letters, overturns the common assumption that evolution only occurs gradually over hundreds or thousands of years.

Apr 09, 2013
5 / 5 (2) 0 | with audio podcast

Black bears: Here, gone, and back again

A new study from the Wildlife Conservation Society (WCS) and the Nevada Department of Wildlife (NDOW) has pieced together the last 150 years of history for one of the state's most interesting denizens: the ...

Mar 29, 2013
5 / 5 (1) 0