A common way to monitor what insects or lizards are around, is to use a live-capture pitfall trap which skinks, geckos and ground-based insects then fall into. With lizards, slices of pear or sometimes petfood are used to attract them to the trap. The Barber pitfall trap - essentially a plastic … [Read more...] about Predator pitfalls for live-trapped lizards
Techniques/technologies
Waikato pest distribution, detectability studied
A recent study by Brandon Breedt and Carolyn King provides the first estimates of the proportion of the Waikato Region occupied by each of the target introduced mammal predator species. The results offer a warning to pest managers that pests are more widespread and harder to remove than is commonly … [Read more...] about Waikato pest distribution, detectability studied
Banding aims to uncover turnstone migration mystery
It’s a bit like putting a message in a bottle – banding migratory birds and seeing where else in the world those specific bands are spotted by fellow birdwatchers. But it has a purpose that goes beyond curiosity about migration routes. Many migratory birds are declining in numbers. So where on their … [Read more...] about Banding aims to uncover turnstone migration mystery
Monitoring shows ungulates increasing on public conservation land
Not all introduced mammals are predators. Apart from omnivorous pigs, the 14 types of ungulate (hooved) mammals introduced here over the years are all plant-grazers of one sort or another. But restoring habitat and removing predators go hand-in-hand if we’re to reverse the downward spiral of our … [Read more...] about Monitoring shows ungulates increasing on public conservation land
Goat Island rat abundance measured in multiple ways
Markus Gronwald and James Russell from the University of Auckland recently measured rat relative abundance on Goat Island, 70km north of Auckland. Both camera traps and digital strike counters for Goodnature A24 self-resetting traps were used and the results compared. A total of 7155 videos, more … [Read more...] about Goat Island rat abundance measured in multiple ways
River tested as reinvasion obstacle to possums
Reinvasion by predators, of previously cleared areas, is one of the many challenges of becoming predator free. We can’t fence huge tracts of wilderness – but we can potentially make use of natural barriers. Possums, for example, may be reluctant to cross rivers. Possums may be reluctant to cross … [Read more...] about River tested as reinvasion obstacle to possums
Less stress = translocation success for tiny rifleman
Translocation is an important tool for conservation management – but it comes with risks. The capture and transfer process can be highly stressful to wildlife. Some individuals can and have died. Finding ways to reduce translocation stress can save lives. And the lives that are saved are often … [Read more...] about Less stress = translocation success for tiny rifleman
Know your bird calls – human brain vs hard-drive
It was human vs hard-drive in Rawhiti, Northland when researchers pitted volunteer bird enthusiasts of various ages and experience against Autonomous Recording Units (ARUs). Senses were pitted against sensors to see who (or what) was best at detecting and identifying calls. Both humans and machines … [Read more...] about Know your bird calls – human brain vs hard-drive
When economics meets ecology – assessing the ‘ecosystem services’ of farmland
Wetland areas and covenanted bush blocks on farms have a clear ecological value, but do they have an economic value as well? The answer is yes. But that leads to another question. How can you assess the economic value of an area of wetland or remnant forest that isn’t producing saleable crops or … [Read more...] about When economics meets ecology – assessing the ‘ecosystem services’ of farmland
Blue Mountains study shows 1080 effective – even for hedgehogs, mice
In the past there’s been some uncertainty over the effectiveness of large-scale aerial 1080 operations to control mice and little is known about its effect on hedgehogs. Recent trail camera monitoring of mammal predators before and after a control operation in the Blue Mountains, West Otago, … [Read more...] about Blue Mountains study shows 1080 effective – even for hedgehogs, mice