Rewilding
I was reading about how weeds had taken over parts
of Kauai when its top predators moa-nalo, large flightless ducks became extinct
and shortly thereafter with the introduction of rabbits and goats so did many
native plants. On a small site there a renewed effort to grow endangered native
plants began but without the moa-nalo weeds were hard to control, thus
threatening the successful resurgence of the native plants. Since the giant
ducks are extinct a new weed predator or surrogate duck needed to be found.
That animal is the giant tortoise and they are noshing on weeds, laying eggs,
and thriving. This is an example of what is called rewilding and it includes
setting aside land for wild areas and restoring ruined ecosystems by reshaping
them using the big animals at the top of the food chain. Since many of these
top predators have gone the way of the moa-nalo researchers and rewilding enthusiasts
want to replace them with substitutes, like they did with giant tortoise in the
example. Europe is taking the initiative in the rewilding movement and has already
set aside 10 areas of 1000 hectares each to be rewilded by 2020. Rewilding in
Yellowstone by returning wolves, nearly 70 years after they had been wiped out
is another successful example of the process here in the states. Now if I could
just figure out a way to use rewilding to get rid of the weeds in my garden all
would be well.