Can Britain's Common Toads Survive from Roads and Population Collapse?
It's Friday night at 7:30, but rather than going out or watching a film, I've caught a train to a town in the countryside to meet up with local helpers from a amphibian rescue group. These dedicated individuals give up their nights to protect the local toad population.
An Alarming Decline in Population
The Bufo bufo is growing more rare. A latest study conducted by an wildlife conservation group showed that the UK toad population have dropped by half since 1985. Observing a species that has been a fixture of the UK landscape in decline is labeled "worrying" by experts. Toads "don't need very particular environments" and "should be able to live successfully in the majority of habitats in Britain," meaning if even they are struggling to persist, "it indicates that the ecosystem is unbalanced."
The UK toad population has almost halved since 1985
The Danger from Traffic
Though the study didn't examine the reasons for the decline, cars is a major factor. Estimates suggest that 20 tons of toads are killed on UK roads every year – that is, hundreds of thousands. In contrast to frogs, which would probably be happy to mate "if you left out a small container," toads favor big bodies of water. 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 usually follow their ancestral migration routes – it's common for mature amphibians to return to their birth pond to mate.
Migration Patterns
Appropriately enough, the first toads start their journey for a mate around February 14th, but some move as far as spring, until it gets dark and travelling after sunset. During that period, toads begin migrating from wherever they have been overwintering "almost simultaneously."
A local helper, who was raised in the area and has been working to save its amphibians since he was a boy, notes that "Their sole purpose: to go and mate." If their route happens to a street, they could be killed by traffic, and that mating period would be lost – stopping a new generation of toads from being produced.
Toad Patrols Across the United Kingdom
Finding many of toad carcasses on nearby streets "resonates deeply with people," and has led to the creation of rescue teams throughout the UK – hundreds of organizations are currently registered with a countrywide program. These teams collect toads and carry them over streets in containers, as well as counting the quantity of toads they encounter and lobbying for other protection measures, such as blocked roads and underground wildlife tunnels.
Patrols tend to operate during the migration season, when amphibian movements are more regular. However, this implies they can overlook numbers of young toads, which, having existed as spawn and then tadpoles, leave their ponds over an unpredictable schedule in late summer. Because of their size – just a couple of cm wide – "they can get obliterated by vehicles." And as being hit "essentially crushes them," it's harder to get data on them. At least when mature amphibians are lost, their remains can be counted.
Year-Round Work
In contrast to most patrols, a specific volunteer group, who are in their eighth year of functioning, go out year-round – not nightly, but when weather are damp, or if someone has reported about a toad sighting in their messaging app. When I request to accompany them on patrol, they concede it is "not ideal conditions" – winter dormancy has started and it's been a dry day – but a few of the helpers gamely agree to patrol their route with me and see what we can find. "If anyone can find any toads tonight, that pair will find one," says the group coordinator, indicating her teenage child and the longtime volunteer. After for 120 minutes without a glimpse of any amphibians, and now they have scaled a barbed wire fence to check under some wood.
Family Participation
The family duo became part of the patrol a year and a half ago. The youngster adores all things nature-related and has an ambition to become a environmentalist, so his mother started to search for things they could do together to help native animals. Now she loves it as much as he does, the middle-aged entrepreneur tells me – so when the group was seeking a fresh coordinator recently, she volunteered for the role.
The youth, too, has been instrumental in the group. A video he made, imploring the municipal authority to close a road through a nature reserve during breeding time, influenced the outcome the team's way. After a twelve months of lobbying, the council agreed to an "access-only" restriction between evening and morning from late winter through to spring. Most drivers respected and avoided the route.
Additional Species and Difficulties
A few cars go by when I'm out on duty and we discover some victims as a result – no toads, but three squashed newts. We spot one living newt as well, and the youngster is particularly pleased to see a daddy longlegs, which moves in his palms. Yet in spite of the team's best efforts to let me see a toad, the local population has clearly gone dormant for the winter. It appears that I couldn't have found any more luck elsewhere in the country – all the rescue teams I reach out to explain that it's near-impossible at this time of year.
The group expects to help approximately 10,000 adult toads across the road
A message I receive from a different helper, who has kindly made the effort to check for toads in a famous site, thought to be the largest accurately monitored toad group in the UK, reaches me with the title: "None found." However, in late winter, he tells me, the team plans to assist around ten thousand adult toads over the street.
Effectiveness and Challenges
How much of a difference can these groups truly achieve? "The fact that volunteers are performing this regularly on cold, damp and unpleasant late nights is remarkable," 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 – partly since vehicles is not the only threat.
Additional Threats
The global warming has resulted in longer periods of drought, which create the poor environment for some of the creatures that toads eat, such as worms and slugs, while higher water temperatures have caused an increase of toxic plants, which can be toxic to toads. Milder winters also lead toads to emerge from their dormancy more often, interfering with the resource preservation vital to their existence. Loss of environment – especially the loss of large ponds – is another menace.
Experts are "often concerned about overemphasizing practical benefits on biodiversity," however "It's important in just their presence." But toads play an significant part in the food chain, consuming pretty much any small creatures or small animals they can fit in their mouths and in turn sustaining a number of birds and mammals, such as hedgehogs and otters. Improving conditions for toads – such as creating more ponds, conserving woodland and installing amphibian passages – "benefits for a whole bunch of additional wildlife."
Cultural Importance
Another reason to work to preserve toads present is their "historical significance," adds an specialist. Myths and folklore around toads go back {centuries|hundred
