Drones, laser scarers and mobile phone apps– how technology is helping conservation
Our countryside, and that across the world, has been altered by our influence. Much of it now is far from being truly wild and, not surprisingly, this has led to many conservation challenges resulting in calls for action. Fortunately, in the 21st century, we have new tools and technology to help with this.
So, what is the best way to save valuable habitats and the species that rely on them in the face of urbanisation, deforestation, invasive nonnative species and agricultural intensification?
Most ecologists now agree that intervention and active management of the landscapes and maintaining the right mix of habitats on an appropriate scale that will allow wildlife to flourish, are crucial. The days of conservation through inaction are long gone, if they ever existed at all.
Wildlife management requires knowledge and understanding of the problems, and skill in applying solutions, without adding too great a burden on other land users. The latter may be controversial to some but is important: we have to appreciate that we cannot simply exclude competing interests; we have to find solutions acceptable to all.
Modern technology is now helping to inform wildlife management decisions. One excellent example is the use of drones. These have become widely available and skilled operators can access otherwise inaccessible areas, and conduct survey work, often from a significant height. Drones can also be deployed to record a wide range of data from a very large area, often very quickly, compared with the ‘old fashioned’ alternative of tramping across the countryside with a notebook, binoculars and a compass. There is a huge saving in time and less disturbance to the wildlife.
Similar technology, greatly scaledup, is deployed by satellite. These are not just there to keep mobile phones working: many satellite networks collect data on land cover, temperature, gas emissions and, of course, the weather, and a lot more besides.
Such technology is great for providing data at landscape, and even countrywide, scales, but what if our interest is in the day-to-day lives of individual animals? Colleagues at the Game & Wildlife Conservation Trust have studied the movements of woodcock, a species of wading bird, using special tags as they migrate between the UK and their wintering grounds in Scandinavia and Russia.
These are carefully fitted to the bird and, once activated, communicate by satellite allowing real-time monitoring of where the birds go and how long they stay at each stopover on the way. This provides valuable data that fills a huge gap in their annual cycle, and helps to explain changes in the number of birds returning to breed, for example, that previously would have been impossible to monitor.
Sometimes wildlife management isn’t about trying to increase animal numbers, but reducing or deterring them. Some conservation projects
may be so successful that their results create conflict with other land users.
One such case is that of sea eagles potentially killing farmers’ lambs on Mull. The proposed solution is laser scaring devices. These medium-powered lasers emit a green light which, when projected onto the ground near the birds, scares them away effectively. The lasers have huge range and could allow farmers to quickly and easily scare eagles from large areas of land. The same applies to geese and other potential bird pests, but the technology hasn’t yet been tried on mammals.
This is something GWCT is now looking at with multiple partners for the LIFE Laser Fence project. We hope to find ways to use lasers to keep some mammals out of areas we want to protect, providing a valuable alternative to lethal methods of control. It might be possible to keep rats out of grain stores, or deer away from busy roads, without resorting to poisons or expensive permanent fencing.
Technology might seem out of reach to the average ‘citizen scientist’, but that isn’t the case. Advances in mobile phones and a pp sm ea nth at the public is equipped to help with many tasks like data gathering.
Modern phones with their capability to process and store large amounts of information could be used to help find and identify target species and record even quite complex data. There are simple apps that allow logging precise locations of findings – exploiting satellites again – and accessing software like mapping programmes. It is likely that wider and better results will be achieved with the help of the latest technology in the hands of the wider public – and we scientists are grateful for that. Dr Dave Parish, head of lowland research Scotland, Game & Wildlife Conservation Trust.