Rnz: Our Changing World

A native species is taking over a jewel-in-the crown marine reserve. But what can be done? Centrostephanus, the long-spined urchin, is munching its way through the world-renowned rock walls and kelp beds of the Poor Knights Islands. DOC, University of Auckland scientists and a local hapū are running removal trials to investigate whether this might be a way to manage its march. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more.…Go to this episode on rnz.co.nz for more details