Voice of Tangaroa

Turning the tide – what it takes to take out rats

Rat eradication from islands is a team sport. It’s not a competition – but if it were, New Zealand would surely be up there. That’s why on most pest removal teams around the world you can probably find one or two Kiwis right in the thick of things. Click the play button, below. Learn more: Read the accompanying New Zealand Geographic article by Kate Evans, with photography by Richard Robinson. Listen to previous episodes of Voice of Tangaroa. Voice of Tangaroa is a joint production between RNZ’s Our Changing World and New Zealand Geographic. Reporting for this series is Public Interest Journalism funded through NZ On Air. You can learn more and read the articles for free at staging.nzgeo.com/seas. The Pacific Regional Invasive Species Management Support Service supported travel costs for this story.

Turning the tide – what it takes to take out rats
0:00 / 29:16
Voice of Tangaroa

Summer 34 – Three decades of albatross research

Gibson’s and Antipodean albatrosses are citizens of no one nation. They are ocean birds, living on the wind and waves, travelling massive distances, passing back and forth over the high seas and the imaginary boundary lines we draw on maps. But when they land to chat, to flirt, to lay an egg and raise a chick, they come to two of New Zealand’s subantarctic islands.   Three decades of albatross study And when they return some of them with meet with two familiar human faces. Across the last 34 years, Department of Conservation researchers Kath Walker and Graeme Elliott have been visiting these islands to count the birds, and to study them. At first everything seemed fine. In the early 1990s numbers were low but increasing. Things were positive. Then came the summer of 2006/2007. There was a population crash, reason still unknown, and on both islands, albatross numbers plummeted. These albatrosses don’t breed until they at least eight years old, only breed every two years, and tend to mate for life. Since the crash, Gibson’s albatross numbers have come back slightly, but Antipodean albatross numbers continue to decline. And adult birds, especially females, are still going missing.   Hooks don’t discriminate Tuna fishing boats use a method called surface longlining to catch their prey. The lines can be up to 100 kilometres long, with thousands of hooks. Squid is used as bait, a tasty morsel for tuna. Unfortunately, albatrosses agree. Using satellite tags Graeme and Kath have watched missing albatrosses’ paths overlap with those of boats, and in one case, in which leg bands and the satellite tag were returned to them, follow the path of the boat. Listen as science journalist Rebekah White explores the albatross bycatch problem, and what we could do about it.   Learn more: Read the accompanying New Zealand Geographic article by Rebekah White, with photography by Richard Robinson. Listen to previous episodes of Voice of Tangaroa. Our Changing World has previously interviewed Kath and Graeme about their research: in 2013 and 2009. Learn more about where these albatrosses breed from Our Changing World episodes about the Antipodes Islands, and the Auckland Islands.  Voice of Tangaroa is a joint production between RNZ’s Our Changing World and New Zealand Geographic.  Reporting for this series is Public Interest Journalism funded through NZ On Air. You can learn more and read the articles for free at staging.nzgeo.com/seas. Live Ocean Foundation supported some of the travel costs for this story. 

Summer 34 – Three decades of albatross research
0:00 / 29:27
Voice of Tangaroa

Taking on water

Today, with our ocean ecosystems under increasing pressure from commercial and recreational fishing, sedimentation, pollution, and warming, we need our marine protection to do more than preserve small areas for scientific study.

Taking on water
0:00 / 30:51

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