Deer density and plant palatability predict shrub cover, richness, diversity and aboriginal food value in a North American archipelago

Deer density and plant palatability predict shrub cover, richness, diversity and aboriginal food value in a North American archipelago,
Diversity and Distribution, Sept 2014

[Abstract],
We provide comparative examples of endangered plant communities to demonstrate that, contrary to the intermediate disturbance hypothesis, any positive effect of deer on plant diversity on islands in the Pacific north-west of North America occurs at densities < 0.08 ha−1, if at all. This detailed example of trophic downgrading highlights the need and provides the methods to identify herbivore densities compatible with the persistence of all native species in conserved landscapes.