Can the UK's Toads Survive from Roads and Population Collapse?
It is a Friday night at half past seven, but instead of heading to the pub or watching a film, I've caught a train to a town in the countryside to join local helpers from a toad patrol. These committed people sacrifice their evenings to safeguard the local toad population.
An Alarming Drop in Numbers
The Bufo bufo is becoming increasingly rare. A latest study led by an amphibian and reptile charity showed that the UK toad population have almost halved since the mid-1980s. Seeing a species that has been a stalwart of the British countryside in decrease is described as "worrying" by researchers. Toads "don't need very specific conditions" and "should be able to live successfully in most of areas in Britain," so if even they are not managing to survive, "it indicates that things are not as they should be."
Toad populations across the UK have declined by almost 50% since the 1980s
The Threat from Roads
Though the study didn't examine the causes for the drop, traffic certainly plays a part. Calculations suggest that 20 tons of toads are crushed on UK roads annually – in other words, hundreds of thousands. Unlike frogs, which might be content to mate "with just a small container," toads prefer big bodies of water. Their ability to stay out of water for more time than frogs allows they can journey farther to find them – often long distances. They tend to stick to their traditional paths – it's common for mature amphibians to go back to their birth pond to mate.
Breeding Patterns
Fittingly, the initial amphibians start their journey for a mate around February 14th, but some move as far as April, waiting until it gets night and travelling through the night. During that time, toads start moving from where they have been overwintering "almost simultaneously."
One volunteer, who grew up in the area and has been working to save its toad population since he was a boy, explains that "Their sole purpose: to go and have an orgy." If their route crosses a road, they could all get run over, and that mating period would never happen – preventing a next generation of toads from being produced.
Toad Patrols Across the UK
Finding hundreds of toad carcasses on local roads "resonates deeply with people," and has resulted in the formation of toad patrols throughout the UK – hundreds of organizations are officially listed with a countrywide program. These teams collect toads and carry them across roads in buckets, as well as counting the quantity of toads they find and advocating for other protection measures, such as road closures and amphibian passages.
Volunteers tend to operate during the migration season, when amphibian movements are more regular. However, this implies they can overlook numbers of young toads, which, having been spawn and then tadpoles, leave their water habitats over an unpredictable schedule in late summer. Because of their small stature – just a couple of cm wide – "they are destroyed by car traffic." And as being hit "basically turns them into mush," it's harder to get data on them. At least when adult toads are lost, their carcasses can be counted.
Annual Efforts
In contrast to most patrols, one local team, who are in their eighth season of functioning, go out year-round – not nightly, but whenever weather are warm and wet, or if a member has reported about a toad sighting in their group chat. When I ask to join them on patrol, they concede it is "not a toady night" – winter dormancy has begun and it's been a arid period – but a few of the helpers willingly accept to walk up and down their area with me and see what we can find. "Should anyone can locate any toads tonight, that pair will find one," says the group coordinator, indicating her teenage child and the longtime volunteer. After for 120 minutes without a glimpse of any amphibians, and now they have climbed over a barbed wire fence to check under some wood.
Family Participation
The family duo joined the group a while back. The youngster loves all things wildlife and has an ambition to become a conservationist, so his parent started to look for activities they could do together to help local wildlife. Now she loves it as much as he does, the middle-aged entrepreneur tells me – so when the group was looking for a new manager lately, she decided to step up.
The teenager, too, has played an important role in the organization. A video he made, imploring the local council to close a road through a protected area during breeding time, influenced the outcome the group's way. After a twelve months of campaigning, the council agreed to an "restricted access" restriction between 5pm and 5am from late winter through to spring. Most drivers respected and avoided the road.
Additional Species and Challenges
A few cars go by when I'm out on patrol and we discover some casualties as a result – no toads, but three squashed newts. We spot one living newt as well, and the teenager is especially excited to see a daddy longlegs, which dances in his palms. Yet despite the team's hardest attempts to show me a toad, the native community has clearly settled down for the colder months. It appears that I couldn't have found any better success elsewhere in the country – all the rescue teams I contact clarify that it's near-impossible at this season.
The group expects to help approximately 10,000 adult toads across the road
One email I get from another volunteer, who has generously taken the trouble to look for toads in a famous site, considered the largest accurately monitored toad population in the UK, arrives in my inbox with the title: "No toads." However, in February and March, he tells me, the team expects to help around 10,000 adult toads over the street.
Impact and Challenges
How much of a difference can these groups actually make? "The fact that people are doing this consistently on cold, damp and unpleasant evenings is quite extraordinary," says an expert. "That's something that very much should be celebrated." However, while rescue teams are able to reduce the drop, they can't stop it completely – not least because vehicles is not the only threat.
Other Dangers
The global warming has meant extended spells of dry weather, which create the poor environment for some of the animals that toads consume, such as invertebrates, while higher water temperatures have led to an increase of blue-green algae, which can be toxic to toads. Milder winters also cause toads to emerge from their dormancy more frequently, interfering with the energy conservation crucial to their life cycle. Loss of environment – especially the loss of large ponds – is an additional threat.
Experts are "often concerned about putting too much of a utilitarian spin on biodiversity," however "There is a big value in just having these animals around." But toads do have an important role in the food chain, consuming pretty much any small creatures or small animals they can fit in their mouths and in turn feeding a number of birds and mammals, such as wildlife. Improving situations for toads – ie building water habitats, protecting forests and constructing toad tunnels – "we'll improve them for a whole bunch of additional wildlife."
Cultural Significance
Another reason to try to keep toads around is their "historical significance," notes an specialist. Legends and tales around toads date back {centuries|hundred
