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Tuesday, June 13, 2017

Sharks can promote seagrass health

There is a substantial volume of evidence that shows us the importance of seagrass. Seagrass meadows are food factories and the nursery areas for many important commercial species.
They also are one of the three key coastal buffering systems around the Australian coastline reducing erosion and helping to mitigate the effects of pollution collected by run-off that flows down to receiving waters, estuaries and the ocean.

Australia is very lucky to have about half the world's kinds of seagrasses and it is important to our own health that we keep these dynamic systems healthy too. Surprisingly sharks play a role in this balancing act.

How can whales change the climate?

Please find a stunning video describing how the trophic cascading around the declining number of whales affects ocean systems. 

A similar video showing how wolves changed rivers can be found at:

We need to recognise the need for top predators in order to keep the ecological balances in place. Another way that people can contribute to waters healthy on the land and sea.