Can the UK's Common Toads Survive from Traffic and Population Collapse?
It is Friday night at 7:30, but rather than going out or watching a film, I've taken a train to a town in the countryside to meet up with local helpers from a amphibian rescue group. These dedicated individuals sacrifice their evenings to safeguard the native amphibian community.
A Worrying Decline in Numbers
The common toad is growing more uncommon. A latest study led by an wildlife conservation group revealed that the UK toad population have almost halved since the mid-1980s. Observing a species that has been a fixture of the UK landscape in decline is described as "worrying" by researchers. Toads "don't need very particular environments" and "should be able to live quite well in the majority of areas in Britain," so if even they are not managing to survive, "it indicates that things are not as they should be."
Since 1985, Britain's toad numbers have nearly been cut in half
The Threat from Traffic
Though the research didn't cover the causes for the drop, traffic certainly plays a part. Estimates suggest that 20 tonnes of toads are crushed on UK roads annually β in other words, several hundred thousand. In contrast to frogs, which would probably be happy to mate "with just a small container," toads prefer big bodies of water. Their ability to remain away from water for longer than frogs allows they can journey farther to find them β often hundreds of metres. They tend to follow their traditional paths β it's typical for mature amphibians to go back to their natal pond to mate.
Migration Habits
Fittingly, the first toads start their journey for a partner around February 14th, but others travel as late as spring, waiting until it gets dark and moving through the night. During that time, toads start moving from where they have been hibernating "almost simultaneously."
One volunteer, who was raised in the region and has been working to save its toad population since he was a child, explains that "They've got just one focus: to go and mate." If their path crosses a road, they could all get run over, and that breeding season would never happen β preventing a next generation of toads from being produced.
Toad Patrols Throughout the UK
Finding many of dead toads on nearby streets "resonates deeply with people," and has led to the creation of toad patrols across the UK β 274 groups are currently registered with a countrywide program. These teams pick up toads and carry them across roads in buckets, as well as counting the quantity of toads they encounter and advocating for other safety solutions, such as road closures and underground wildlife tunnels.
Patrols usually work during the breeding period, when amphibian movements are frequent. However, this means they can miss groups of young toads, which, having existed as eggs and then tadpoles, leave their water habitats over an unpredictable schedule in late summer. Because of their size β just one or two centimetres wide β "they can get obliterated by car traffic." And as being run over "basically turns them into mush," it's more difficult to get data on them. At least when mature amphibians are lost, their remains can be tallied.
Year-Round Efforts
In contrast to most patrols, one local team, who are in their eighth season of operating, go out year-round β not every night, but when conditions are damp, or if a member has posted about a amphibian spotting in their group chat. When I ask to join them on patrol, they concede it is "not a toady night" β toad hibernation season has begun and it's been a arid period β but several of the volunteers willingly accept to walk up and down their route with me and see what we can find. "Should anyone can find any toads tonight, those two will find one," says the patrol manager, pointing to her 14-year-old son and the experienced member. After for two hours without a glimpse of any amphibians, and now they have climbed over a wire barrier to check under some wood.
Family Participation
The mother and son joined the group a year and a half ago. The teenager loves all things wildlife and has an ambition to become a environmentalist, so his mother started to look for things they could do together to help local wildlife. Now she enjoys it as much as he does, the 41-year-old entrepreneur explains β so when the group was looking for a new manager recently, she decided to step up.
The youth, too, has been instrumental in the group. A clip he created, urging the municipal authority to block a road through a protected area during breeding time, influenced the outcome the group's way. After a year of lobbying, the authority approved an "restricted access" rule between evening and morning from late winter through to spring. The majority of motorists respected and avoided the route.
Other Wildlife and Difficulties
Several vehicles go past when I'm out on duty and we discover some victims as a result β no amphibians, but three squashed newts. We see one living newt as well, and the youngster is particularly pleased to see a harvestman, which moves in his hands. Yet despite the team's best efforts to show me a toad, the native community has obviously settled down for the winter. It appears that I couldn't have found any better success elsewhere in the country β all the rescue teams I contact explain that it's very difficult at this season.
They project rescuing nearly 10,000 grown amphibians during migration
A message I get from a different helper, who has kindly made the effort to look for toads in a noted location, thought to be the biggest tracked toad population in the UK, reaches me with the subject line: "None found." However, in late winter, he informs me, the team plans to assist approximately ten thousand adult toads over the street.
Impact and Challenges
What level of impact can these organizations truly achieve? "The fact that people are performing this consistently on cold, damp and unpleasant evenings is quite extraordinary," says an researcher. "This effort that very much deserves recognition." However, while toad patrols are able to slow the decline, they cannot prevent it entirely β partly since vehicles is just one danger.
Additional Threats
The global warming has meant longer periods of drought, which cause the wrong conditions for some of the creatures that toads eat, such as invertebrates, while warmer ponds have led to an rise of toxic plants, which can be toxic to toads. Milder winters also lead toads to emerge from their hibernation more frequently, interfering with the resource preservation vital to their life cycle. Loss of environment β especially the loss of big water bodies β is another menace.
Researchers are "often concerned about overemphasizing practical benefits on wildlife," but "There is a big value in just having these animals around." But toads do have an significant part in the food chain, eating pretty much any invertebrates or tiny organisms they can swallow and in turn feeding a number of predators, such as hedgehogs and otters. Enhancing conditions for toads β such as building water habitats, protecting forests and constructing amphibian passages β "we'll improve them for a wide range of other species."
Historical Importance
An additional motive to try to keep toads present is their "important cultural value," adds an specialist. Myths and folklore around toads go back {centuries|hundred