INFOGRAPHIC 21.5 POPULATION CYCLES OF PREDATOR AND PREY
The wolf and moose populations are intimately linked. The wolf population peaks (red arrows) about 10 years after a peak in the moose population (blue arrows), and then declines, following the decline in the moose.
Isle Royale National Park, 1959–2013. Moose population estimates for 1959–2001 are based on population reconstruction from recoveries of dead moose. Estimates for 2002 to 2013 are based on aerial surveys.
The wolf and moose populations are intimately linked. The wolf population peaks (red arrows) about 10 years after a peak in the moose population (blue arrows), and then declines, following the decline in the moose.
Isle Royale National Park, 1959–2013. Moose population estimates for 1959–2001 are based on population reconstruction from recoveries of dead moose. Estimates for 2002 to 2013 are based on aerial surveys.
