Can the UK's Toads Survive from Traffic and Population Collapse?
It is Friday night at 7:30, but rather than going out or relaxing at home, I've taken a train to a market town in the countryside to join volunteers from a amphibian rescue group. These committed people sacrifice their nights to safeguard the native amphibian community.
A Worrying Drop in Population
The common toad is growing more uncommon. A latest research conducted by an amphibian and reptile charity showed that the British common toad numbers have dropped by half since 1985. Seeing a species that has been a stalwart of the British countryside in decline is labeled "worrying" by experts. Toads "don't need very particular environments" and "ought to live successfully in most of areas in the UK," so if even they are not managing to survive, "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 Traffic
Though the study didn't examine the causes for the decline, traffic is a major factor. Calculations indicate that 20 tons of toads are crushed on British roads annually – in other words, hundreds of thousands. In contrast to frogs, which would probably be content to mate "if you left out a bucket of water," toads favor large ponds. Their ability to stay out of water for more time than frogs means they can journey farther to find them – sometimes hundreds of metres. They tend to follow their ancestral migration routes – it's typical for mature amphibians to return to their birth pond to mate.
Breeding Habits
Fittingly, the initial amphibians begin their quest for a partner around February 14th, but others travel as late as April, waiting until it gets night and moving through the night. During that time, toads begin migrating from wherever they have been overwintering "almost simultaneously."
A local helper, who was raised in the region and has been trying to protect its amphibians since he was a child, explains that "They've got just one focus: to go and mate." If their path happens to a street, they could be killed by traffic, and that breeding season would never happen – preventing a new generation of toads from being born.
Rescue Groups Throughout the UK
Seeing hundreds of dead toads on nearby streets "resonates deeply with people," and has resulted in the formation of toad patrols across the UK – hundreds of organizations are currently registered with a national initiative. These teams pick up toads and transport 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 means they can overlook numbers of young toads, which, having existed as eggs and then tadpoles, exit their ponds over an unpredictable schedule in late summer. Because of their size – just one or two centimetres wide – "they are destroyed by vehicles." And as being run over "essentially crushes them," it's more difficult to collect information on them. At least when mature amphibians are lost, their remains can be tallied.
Year-Round Work
Unlike many groups, a specific volunteer group, who are in their eighth season of functioning, go out throughout the year – not nightly, but when weather are warm and wet, or if someone has reported about a amphibian spotting in their group chat. When I request to accompany them on patrol, they concede it is "not a toady night" – winter dormancy has started and it's been a arid period – but a few of the volunteers willingly accept to patrol their route with me and see what we can find. "If anyone can locate any toads tonight, that pair will spot one," says the group coordinator, pointing to her teenage child and the experienced member. We've been out for 120 minutes without a glimpse of any amphibians, and now they have climbed over a wire barrier to check under some wood.
Community Involvement
The family duo joined the patrol a while back. The youngster adores all things wildlife and has an goal to become a environmentalist, so his mother started to look for things they could do jointly to help local wildlife. Now she enjoys it as much as he does, the 41-year-old small business owner tells me – so when the group was seeking a fresh coordinator recently, she volunteered for the role.
The youth, too, has played an important role in the group. A video he created, urging the local council to close a road through a protected area during migration season, swung the decision the team's way. After a year of campaigning, the council agreed to an "access-only" restriction between 5pm and 5am from late winter through to April. Most drivers duly avoided the route.
Other Wildlife and Difficulties
Several cars go by when I'm out on patrol and we find some victims as a consequence – no amphibians, but several crushed salamanders. We spot one live amphibian as well, and the teenager is especially excited to see a harvestman, which dances in his palms. Yet in spite of the group's best efforts to let me see a toad, the native community has obviously settled down for the colder months. It appears that I wouldn't have had any more luck anywhere else in the nation – all the patrol groups I contact clarify that it's very difficult at this time of year.
This team anticipates assisting around ten thousand mature toads over the street
A message I get from another volunteer, 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 tells me, the group plans to assist approximately ten thousand adult toads over the street.
Effectiveness and Limitations
How much of a difference can these groups truly achieve? "The fact that people are doing this consistently on chilly, wet and miserable late nights is remarkable," notes an researcher. "This effort that very much should be celebrated." However, while toad patrols are able to slow the decline, they cannot prevent it entirely – partly since traffic is not the only threat.
Other Dangers
The global warming has meant longer periods of drought, which cause the wrong conditions for some of the creatures that toads consume, such as worms and slugs, while warmer ponds have led to an increase of blue-green algae, which can be harmful to toads. Warmer cold seasons also cause toads to emerge from their hibernation more often, interfering with the resource preservation crucial to their existence. Loss of environment – particularly the loss of large ponds – is another menace.
Experts are "often concerned about overemphasizing practical benefits on wildlife," but "It's important in just their presence." But toads play an important role in the food chain, consuming almost any invertebrates or small animals they can swallow and in turn sustaining a number of predators, such as wildlife. Improving situations for toads – such as building water habitats, protecting forests and constructing amphibian passages – "benefits for a whole bunch of other species."
Cultural Significance
An additional motive to try to keep toads present is their "historical significance," adds an expert. Legends and tales around toads date back {centuries|hundred