Will Britain's Toads Survive from Traffic and Terrible Decline?
It's a Friday night at half past seven, but rather than heading to the pub or watching a film, I've caught a train to a market town in Wiltshire to meet up with volunteers from a toad patrol. These dedicated individuals give up their evenings to protect the local toad population.
A Worrying Drop in Population
The Bufo bufo is becoming increasingly rare. A recent research conducted by an amphibian and reptile charity revealed that the British common toad numbers have almost halved since the mid-1980s. Seeing a species that has been a fixture of the UK landscape in decline is labeled "worrying" by researchers. Toads "don't require very specific conditions" and "should be able to live quite well in the majority of habitats in Britain," meaning if even they are struggling to persist, "it kind of suggests 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 cover the reasons for the drop, traffic is a major factor. Estimates indicate that 20 tons of toads are crushed on British roads annually β that is, several hundred thousand. In contrast to frogs, which might be content to mate "if you left out a bucket of water," toads prefer big bodies of water. Their capacity to stay out of water for more time than frogs allows they can journey farther to reach them β sometimes long distances. They usually follow their ancestral migration routes β it's typical for adult toads to go back to their birth pond to mate.
Migration Patterns
Appropriately enough, the initial amphibians begin their quest for a partner around Valentine's day, but others travel as late as spring, waiting until it gets night and travelling through the night. During that time, toads begin migrating from wherever they have been overwintering "almost simultaneously."
One volunteer, who was raised in the area and has been trying to protect its amphibians since he was a child, explains that "They've got just one focus: to go and have an orgy." If their route happens to a street, they could be killed by traffic, and that breeding season would be lost β stopping a next generation of toads from being produced.
Toad Patrols Throughout the United Kingdom
Finding many of toad carcasses on local roads "inherently strikes a chord with people," and has resulted in the creation of toad patrols throughout the UK β hundreds of organizations are currently registered with a countrywide program. These groups collect toads and carry them across roads in buckets, as well as counting the number of toads they find and lobbying for other protection measures, such as road closures and amphibian passages.
Volunteers tend to operate during the migration season, when toad crossings are frequent. However, this implies they can miss groups of young toads, which, having been eggs and then juveniles, leave their ponds over an unpredictable schedule in late summer. Because of their small stature β just one or two centimetres wide β "they can get obliterated by car traffic." And as being run over "essentially crushes them," it's harder to get data on them. At least when mature amphibians are killed, their remains can be counted.
Annual Efforts
Unlike many groups, one local team, who are in their eighth year of operating, go out throughout the year β not nightly, but when conditions are warm and wet, or if someone 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 winter dormancy has begun and it's been a dry day β but a few of the helpers willingly accept to patrol their area with me and search for any toads. "If anyone can locate any toads tonight, that pair will spot one," says the group coordinator, indicating her teenage child and the experienced member. After for two hours without a glimpse of any amphibians, and now they have scaled a barbed wire fence to check under some logs.
Family Involvement
The family duo joined the group a year and a half ago. The youngster loves all things nature-related and has an goal to become a environmentalist, so his mother started to search for activities they could do jointly to help local wildlife. Now she loves it as much as he does, the middle-aged small business owner explains β so when the group was looking for a new manager lately, she decided to step up.
The youth, too, has been instrumental in the group. A video he made, urging the municipal authority to block a street through a protected area during migration season, swung the decision the team's way. After a twelve months of campaigning, the council agreed to an "access-only" rule between evening and morning from February through to spring. The majority of motorists duly avoided the route.
Other Wildlife and Difficulties
A few cars go past when I'm out on patrol and we discover some victims as a result β no amphibians, but three squashed newts. We see one live amphibian as well, and the teenager is especially excited to see a harvestman, which moves in his palms. Yet in spite of the team's best efforts to show me a toad, the local population has obviously gone dormant for the winter. It seems 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.
The group expects to help approximately 10,000 adult toads across the road
One email I receive from a different helper, who has generously made the effort to check for toads in a noted location, 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 approximately ten thousand mature amphibians across the road.
Effectiveness and Limitations
What level of impact can these organizations truly achieve? "The reality that volunteers are doing this regularly on cold, damp and unpleasant evenings is remarkable," notes an expert. "This effort that very much should be celebrated." However, while rescue teams are able to slow the decline, they can't stop it completely β not least because vehicles is not the only threat.
Additional Threats
The climate crisis has resulted in extended spells of drought, which create the poor environment for some of the animals that toads eat, such as worms and slugs, while higher water temperatures have caused an increase of blue-green algae, which can be toxic to toads. Warmer cold seasons also cause toads to emerge from their hibernation more frequently, interfering with the energy conservation crucial to their life cycle. Habitat destruction β especially the disappearance of large ponds β is another menace.
Experts are "always a bit worried about overemphasizing practical benefits on biodiversity," however "It's important in just their presence." But toads do have an important role in the ecosystem, eating almost any invertebrates or small animals they can swallow and in turn sustaining a variety of birds and mammals, such as wildlife. Improving conditions for toads β such as creating more ponds, protecting forests and constructing amphibian passages β "we'll improve them for a wide range of additional wildlife."
Cultural Importance
Another reason to work to preserve toads around is their "historical significance," adds an specialist. Myths and folklore around toads date back {centuries|hundred