The Sea Lion and the SLED

You may remember a post that I wrote a few months ago about the New Zealand sea lion. It was about how the largest population of this New Zealand endemic is declining rapidly on their Sub-Antarctic refuge in the Auckland Islands. While writing my¬†e-book about Campbell Island I thought I would head across the road to interview Dr. Bruce Robertson from the University of Otago’s zoology department.

Dr. Robertson has written a number of papers about the New Zealand sea lions; their decline, population structure, genetics, and the bycatch management system. I spoke to him about the use of Sea Lion Exclusion Devices (also known as SLEDs), specifically whether or not they are effective. I was interested to hear about how the government (the Ministry for Primary Industries) have gone about testing these devices to ensure that they are working and successfully protecting this vulnerable species.

Here is his answer: