Predators in your back yard.
written by Monty Halls (Senior)
This programme (BBCiPlayer till 14th March 2011) illustrates the importance of a top land predator to a local environment (in this case wolves and Yellowstone Park). The re-introduction of the wolf has resulted in much-improved tree cover (not being over-browsed by the deer family) and the re-appearance of beavers in improved river water quality.
It is high time that this principle was extended to cover shark conservation if we are to prevent the creation of 'oceanic deserts' !!