Will Britain's Common Toads Be Saved from Roads and Population Collapse?
It is Friday evening at half past seven, but instead of going out or watching a film, I've taken a train to a market town in Wiltshire to join volunteers from a amphibian rescue group. These committed people give up their evenings to protect the native amphibian community.
A Worrying Decline in Population
The common toad is becoming increasingly rare. A recent study led 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 British countryside in decrease is labeled "concerning" by researchers. Toads "don't require very specific conditions" and "ought to live successfully in the majority of habitats in Britain," so if even they are not managing to survive, "it kind of suggests that things are not as they should be."
The UK toad population has almost halved since 1985
The Threat from Roads
Though the study didn't cover the reasons for the drop, cars certainly plays a part. Estimates indicate that 20 tonnes of toads are crushed on UK roads every year – that is, hundreds of thousands. Unlike frogs, which would probably be content to mate "if you left out a bucket of water," toads favor big bodies of water. Their ability to stay out of water for longer than frogs means they can journey farther to find them – often hundreds of metres. They usually follow their ancestral migration routes – it's common for adult toads to go back to their natal pond to mate.
Breeding Habits
Fittingly, the initial amphibians start their journey for a mate around February 14th, but others travel as far as spring, until it gets night and travelling after sunset. During that period, toads start moving 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 working to save its toad population since he was a boy, notes that "They've got just one focus: to go and have an orgy." If their route happens to a road, they could be killed by traffic, and that mating period would be lost – preventing a new generation of toads from being born.
Rescue Groups Across the United Kingdom
Finding hundreds of toad carcasses on nearby streets "inherently strikes a chord with people," and has resulted in the creation of rescue teams across the UK – hundreds of organizations are currently registered with a countrywide program. These teams collect toads and transport them across roads in containers, as well as recording the number of toads they find and advocating for other protection measures, such as road closures and amphibian passages.
Patrols tend to operate during the migration season, when amphibian movements are more regular. However, this means they can overlook groups of young toads, which, having existed as eggs and then tadpoles, leave their ponds over an unpredictable schedule in the end of summer. Because of their small stature – just a couple of cm wide – "they can get obliterated by vehicles." And as being run over "essentially crushes them," it's harder to collect information on them. At least when mature amphibians are killed, their remains can be tallied.
Year-Round Work
In contrast to many groups, one local team, who are in their eighth year of functioning, go out year-round – not every night, but when weather are warm and wet, or if someone has reported about a amphibian spotting in their messaging app. When I ask to join them on patrol, they concede it is "not a toady night" – winter dormancy has started and it's been a dry day – but several of the volunteers willingly accept to walk up and down their area with me and see what we can find. "If anyone can locate any toads tonight, that pair will spot one," says the group coordinator, indicating her 14-year-old son and the experienced member. After for 120 minutes without a single toad sighting, and now they have scaled a barbed wire fence to check under some logs.
Family Participation
The mother and son joined the patrol a year and a half ago. 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 native animals. Now she enjoys it as much as he does, the middle-aged small business owner explains – so when the team was seeking a new manager lately, she volunteered for the role.
The youth, too, has played an important role in the group. A clip he created, imploring the municipal authority to close a street through a protected area during breeding time, swung the decision the group's way. After a twelve months of campaigning, the council approved an "access-only" restriction between evening and morning from February through to April. Most drivers duly avoided the road.
Other Wildlife and Challenges
Several cars go past when I'm out on patrol and we discover some casualties as a consequence – no amphibians, but several crushed salamanders. We spot one live amphibian 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 native community has obviously gone dormant for the colder months. It appears that I couldn't have found any better success anywhere else in the nation – all the patrol groups I contact clarify that it's near-impossible 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 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 late winter, he informs me, the team expects to help approximately 10,000 adult toads over the street.
Effectiveness and Limitations
How much of a difference can these organizations truly achieve? "The fact that volunteers are performing this regularly on cold, damp and unpleasant late nights is remarkable," says an expert. "This effort that very much deserves recognition." However, while rescue teams are able to slow the decline, they cannot prevent it entirely – not least because vehicles is not the only threat.
Additional Threats
The global warming has meant longer periods of drought, which cause the poor environment for some of the animals that toads eat, such as invertebrates, while higher water temperatures have caused an increase of blue-green algae, which can be toxic to toads. Milder winters also lead toads to wake up from their hibernation more frequently, interfering with the resource preservation vital to their existence. Loss of environment – especially the loss of large ponds – is an additional threat.
Researchers 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 ecosystem, consuming almost any invertebrates or tiny organisms they can fit in their mouths and in turn feeding a number of predators, such as hedgehogs and otters. Enhancing situations for toads – ie creating more ponds, conserving woodland and constructing toad tunnels – "we'll improve them for a wide range of additional wildlife."
Historical Significance
An additional motive to work to preserve toads present is their "historical significance," notes an expert. Myths and folklore around toads go back {centuries|hundred