Can the UK's Toads Survive from Traffic and Population Collapse?
It's Friday night at half past seven, but instead of heading to the pub or watching a film, I've taken a train to a market town in the countryside to join local helpers from a amphibian rescue group. These dedicated individuals give up their evenings to protect the native amphibian community.
A Worrying Decline in Numbers
The common toad is growing more uncommon. A latest study conducted by an wildlife conservation group revealed that the British common toad numbers have almost halved since the mid-1980s. Seeing a species that has been a stalwart of the UK landscape in decline is labeled "worrying" by experts. Toads "don't require very particular environments" and "ought to live successfully in most of habitats in Britain," meaning if even they are struggling to persist, "it indicates that things are not as they should be."
The UK toad population has almost halved since 1985
The Danger from Traffic
Though the study didn't cover the reasons for the drop, traffic is a major factor. Calculations suggest that 20 tons of toads are crushed on British roads annually – that is, several hundred thousand. In contrast to frogs, which would probably be happy to mate "if you left out a bucket of water," toads favor large ponds. Their capacity to remain away from water for more time than frogs allows they can journey farther to find them – sometimes hundreds of metres. They tend to stick to their traditional paths – it's common for mature amphibians to return to their birth pond to mate.
Breeding Patterns
Fittingly, the initial amphibians begin their quest for a partner around February 14th, but some move as far as spring, until it gets night and travelling through the night. During that time, toads begin migrating 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 boy, notes that "They've got just one focus: to go and mate." If their route happens to a street, they could be killed by traffic, and that breeding season would never happen – stopping a next generation of toads from being born.
Rescue Groups Throughout the UK
Finding hundreds of toad carcasses on local roads "resonates deeply with people," and has resulted in the creation of rescue teams across the UK – 274 groups are currently registered with a countrywide program. These groups pick up toads and transport them over streets in containers, as well as counting the number of toads they find and lobbying for other safety solutions, such as road closures and underground wildlife tunnels.
Volunteers tend to operate during the migration season, when amphibian movements are frequent. However, this implies they can miss groups of toadlets, which, having existed as eggs and then juveniles, leave their water habitats over an unpredictable schedule in the end of summer. Because of their size – just a couple of cm wide – "they can get obliterated by vehicles." And as being run over "essentially crushes them," it's more difficult to collect information on them. At least when adult toads are killed, their remains can be tallied.
Annual Efforts
Unlike most patrols, one local team, who are in their eighth year of functioning, go out year-round – not nightly, but when conditions are damp, or if a member has reported about a amphibian spotting in their group chat. When I request to accompany them on duty, they concede it is "not a toady night" – toad hibernation season has begun and it's been a arid period – but a few of the volunteers gamely agree to walk up and down their area with me and see what we can find. "If anyone can find any toads tonight, those two will find one," says the group coordinator, indicating her 14-year-old son and the longtime volunteer. After for 120 minutes without a glimpse of any amphibians, and now they have scaled a wire barrier to inspect beneath some logs.
Family Participation
The mother and son joined the patrol a while back. The youngster loves all things wildlife and has an goal to become a conservationist, so his mother started to look for activities they could do jointly to help native animals. Now she enjoys it as much as he does, the 41-year-old entrepreneur explains – so when the team was looking for a new manager recently, she volunteered for the role.
The youth, too, has been instrumental in the organization. A clip 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 lobbying, the council agreed to an "access-only" rule between 5pm and 5am from February through to spring. The majority of motorists respected and avoided the road.
Additional Species and Difficulties
Several vehicles go by when I'm out on patrol and we discover some casualties as a consequence – no toads, but several crushed salamanders. We see one living newt as well, and the teenager is especially excited to see a harvestman, which dances in his palms. Yet despite the group's best efforts to let me see a toad, the native community has clearly gone dormant for the winter. It seems that I wouldn't have had any better success anywhere else in the nation – all the patrol groups I reach out to clarify that it's very difficult at this season.
This team anticipates assisting around ten thousand mature toads over the street
One email I get from a different helper, who has kindly taken the trouble to look for toads in a famous site, considered the biggest tracked toad population in the UK, arrives in my inbox with the title: "No toads." However, in late winter, he tells me, the team plans to assist around ten thousand mature amphibians over the street.
Effectiveness and Challenges
What level of impact can these groups actually make? "The fact that volunteers are performing this regularly on cold, damp and unpleasant evenings is quite extraordinary," notes an expert. "That's something that very much should be celebrated." However, while toad patrols are able to slow the decline, they can't stop it completely – partly since vehicles is just one danger.
Other Dangers
The global warming has meant longer periods of dry weather, which create the wrong conditions for some of the animals that toads eat, such as worms and slugs, while higher water temperatures have caused an rise of blue-green algae, which can be toxic to toads. Warmer cold seasons also lead toads to emerge from their dormancy more frequently, disrupting the resource preservation crucial to their life cycle. Habitat destruction – particularly the disappearance of large ponds – is another menace.
Experts are "often concerned about overemphasizing practical benefits on wildlife," but "There is a big value in just their presence." But toads play an important role in the food chain, eating pretty much any invertebrates or small animals they can swallow and in turn sustaining a variety of predators, such as wildlife. Improving conditions for toads – such as creating more ponds, protecting forests and constructing toad tunnels – "benefits for a wide range of other species."
Cultural Significance
An additional motive to work to preserve toads around is their "historical significance," notes an expert. Myths and folklore around toads go back {centuries|hundred