When species are subjected to changing environments, they can survive in their current location through genetic adaptation. However, this ability is not unlimited. In a study published in PNAS, biomathematician Jitka Polechová of the University of Vienna shows that, even when environmental change is only gradual, there is a tipping point beyond which adaptation can suddenly fail. When that happens, species’ ranges may shrink or populations may fragment into separate subpopulations.
Why gradual environmental change can trigger sudden species collapse and fragmented populations
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