Off balance

An ecosystem in balance is marked by diversity and abundance. An ecosystem out of balance is a desert of monotony.

Produced by New Zealand Geographic

Here at Nordic Reef, snapper populations have been depleted by overfishing, kina populations have exploded and devoured all the kelp, sponges and algae. The lush and vibrant reef has become a wasteland, or as biologists refer to it, a ‘kina barren’.

It is a dead zone, and without weed for protection, few larvae will resettle successfully to repopulate it. Even if fishing stopped tomorrow, it may take a decade to recover.

Related Episodes

Primeval New Zealand

45 minutes / 2011

Predator or Prey

48 minutes / 2019

Islands of Life

48 minutes / 2019

Summer’s End

48 minutes / 2019

Malaria Storm

48 minutes / 2019

×

Subscribe to our free newsletter for news and prizes

3 FREE ARTICLES LEFT

Subscribe for $1  | 

3 FREE ARTICLES LEFT THIS MONTH


Keep reading for just $1

$1 trial for two weeks, thereafter $8.50 every two months, cancel any time

Signed in as . Sign out