Can the UK's Common Toads Survive from Traffic and Population Collapse?
It is Friday night at half past seven, but rather than heading to the pub or watching a film, I've taken a train to a town in the countryside to join volunteers from a toad patrol. These committed people sacrifice their nights to protect the native amphibian community.
A Worrying Drop in Numbers
The Bufo bufo is becoming increasingly uncommon. A latest research led by an amphibian and reptile charity showed that the UK toad population have dropped by half since the mid-1980s. Seeing a species that has been a fixture of the British countryside in decline is labeled "worrying" by experts. Toads "don't need very specific conditions" and "ought to live quite well in most of areas in the UK," so if even they are not managing to survive, "it kind of suggests that the ecosystem is unbalanced."
The UK toad population has almost halved since 1985
The Threat from Traffic
Though the research didn't examine the reasons for the decline, cars certainly plays a part. Calculations suggest that 20 tons of toads are crushed on British roads annually – in other words, several hundred thousand. In contrast to frogs, which might be happy to mate "with just a bucket of water," toads favor big bodies of water. Their capacity to stay out of water for more time than frogs means they can journey farther to find them – sometimes hundreds of metres. They usually stick to their traditional paths – it's common for adult toads to go back to their natal pond to mate.
Migration Habits
Appropriately enough, the initial amphibians begin their quest for a partner around February 14th, but others travel as far as spring, waiting until it gets dark and moving through the night. During that period, toads begin migrating from wherever they have been overwintering "all pretty much at the same time."
A local helper, who grew up in the region and has been trying to protect its amphibians since he was a boy, notes that "Their sole purpose: to go and mate." If their path crosses a street, they could be killed by traffic, and that mating period would never happen – stopping a new generation of toads from being produced.
Toad Patrols Across the UK
Finding many of dead toads on local roads "resonates deeply with people," and has led to the creation of toad patrols throughout the UK – hundreds of organizations are officially listed with a countrywide program. These teams pick up toads and transport them across roads in containers, as well as counting the quantity 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 numbers of toadlets, which, having existed as eggs and then juveniles, leave their water habitats over an irregular timetable in the end of summer. Because of their small stature – just one or two centimetres 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 killed, their remains can be tallied.
Annual Work
Unlike most patrols, a specific volunteer group, who are in their eighth season of operating, go out year-round – not nightly, but whenever weather are warm and wet, or if a member has posted about a amphibian spotting in their messaging app. When I request to accompany them on patrol, they admit it is "not a toady night" – winter dormancy has started 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 search for any toads. "Should anyone can locate any toads tonight, those two will spot one," says the group coordinator, indicating her 14-year-old son and the longtime volunteer. After for two hours without a glimpse of any amphibians, and now they have scaled a wire barrier to check under some logs.
Community Participation
The mother and son joined the group a while back. The youngster adores all things nature-related and has an ambition to become a environmentalist, so his parent started to search for activities they could do jointly to protect native animals. Now she loves it as much as he does, the middle-aged small business owner explains – so when the team was seeking a fresh coordinator recently, she decided to step up.
The youth, too, has played an important role in the group. A video he made, urging the local council to block a street through a protected area during breeding time, swung the decision the group'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. The majority of motorists respected and avoided the route.
Other Wildlife and Difficulties
Several cars go past when I'm out on patrol and we discover some victims as a consequence – no amphibians, but several crushed salamanders. We see one living newt as well, and the youngster is particularly pleased to see a daddy longlegs, which moves in his hands. Yet in spite of the group's hardest attempts to show me a toad, the native community has obviously gone dormant for the winter. It seems that I couldn't have found any better success elsewhere in the nation – all the patrol groups I contact explain that it's very difficult at this time of year.
The group expects to help approximately 10,000 adult toads across the road
A message I get from a different helper, who has generously taken the trouble to check for toads in a famous site, considered the biggest tracked toad group in the UK, reaches me with the title: "None found." However, in February and March, he tells me, the team plans to assist approximately 10,000 adult toads across the road.
Impact and Limitations
How much of a difference can these organizations truly achieve? "The reality that people are performing this consistently on cold, damp and unpleasant evenings is remarkable," notes an expert. "This effort that very much deserves recognition." However, while toad patrols are able to reduce the drop, they cannot prevent it entirely – partly since vehicles is just one danger.
Other Dangers
The climate crisis has resulted in extended spells of dry weather, which cause the wrong conditions for some of the creatures that toads consume, such as worms and slugs, while warmer ponds have caused an increase of toxic plants, which can be toxic to toads. Milder winters also lead toads to wake up from their hibernation more often, interfering with the resource preservation vital to their life cycle. Habitat destruction – particularly the disappearance of big water bodies – is an additional threat.
Experts are "often concerned about overemphasizing practical benefits on biodiversity," however "There is a big value in just their presence." But toads play an significant part in the ecosystem, eating almost any invertebrates or tiny organisms they can fit in their mouths and in turn sustaining a number of predators, such as hedgehogs and otters. Improving situations for toads – such as building water habitats, conserving woodland and constructing amphibian passages – "benefits for a whole bunch of additional wildlife."
Cultural Significance
An additional motive to try to keep toads around is their "important cultural value," notes an expert. Legends and tales around toads go back {centuries|hundred