Reposted from Wirral Amphibian & Reptile Group (WiARG) webpageIn the summer of 2021, the Wirral Amphibian & Reptile Group (WiARG) led a study on the habitat use of amphibians in the north west Wirral coast. This primarily looked at whether amphibians were using areas outside of the Red Rocks Nature Reserve, where it was already known populations of four amphibian species occur: Smooth Newt, Common Frog, Common Toad, and the Natterjack Toad. The study was born out of the long-term consideration of expanding and sustaining the rare Natterjack population on the Wirral. Natterjack had been reintroduced to Red Rocks in 1996 and was sustaining its population thanks to management of its breeding habitat by the Cheshire Wildlife Trust (the Wirral Parks & Recreation before them). While they were stable there, this was still a small, vulnerable population, with more needed to expand across the Wirral coast. Back in 2019 when WiARG were turning our attentions to Red Rocks, there was only bare sand, housing, roads and sea walls connecting the dunes there to the dunes at Meols and the Gunsite. We had thought about how the habitat between the two main sand dune sites could be restored so these rare toads could have lots of other breeding populations. In particular, we wanted to work out how to engage with the public to get consent for geoengineering the coast to make this possible. Then came the revelation that the beach at Hoylake was being kept artificially bare, that the council had been spraying and raking vegetation that would have formed coastal habitat. Things then started moving. First of all, the council stopped spraying and raking the beach. Then the coastal vegetation started to grow, and grow, forming green mats of a mixture of saltmarsh and sand dune species. Over a hundred plant species were found to be colonising (or resurrecting within?) the shore over two years. Sadly, despite much positive support for the succession, there was a loud chorus of disapproval that made the issue highly polarised. This was apparently enflamed by party politics seizing the opportunity to discredit opponents making the decisions and win over disgruntled voters. Whichever decisions were to be made, a scientific evidence base would be needed. We therefore took the opportunity to obtain baseline data on the status of amphibians outside of Red Rocks, not just Hoylake but other, adjacent areas. This complemented other studies, such as on plant biodiversity and geomorphology. We held back from surveying residential properties to save frightening people who would see us wondering around their gardens at night. Academically, this study has been interesting in understanding how amphibians move along coastal environments – one rule of thumb is that amphibians avoid saline environments or at least do not thrive in them. For example, oceanic islands formed by volcanic activity typically have no amphibians at all as amphibians can’t enter the sea and survive long. Natterjack have some tolerance to salt water that can give them the upper hand over Common Toad, but even a high tide can put them off breeding in a pond for a while. One night we found that where amphibians stopped, the crabs started – there was an abundance of Shore Crab on land. This may have been an unusual night as we didn’t see it every time, but was food for thought. Due to the viciousness of some of the discourse from some members of the public, manifest by abuse directed to other scientists involved with studying the beach, we did our best to keep a low profile. And it seemed to work as we carried on without hassle, with no snide comments from the usual suspects after we posted findings on social media platforms. Afterall we just wanted to do the science, enjoy ourselves meeting amphibians doing interesting things on the coast and send it back to the public for consideration. And we met some lovely amphibians, even the protected Natterjack in abundance, which we had to arrange for licensing to survey from Natural England. Common Toad were mostly found to be spilling over into Hoylake Beach, with one young Natterjack, but none more than 100m out. In contrast, we found no amphibians at all in the raked West Kirby beach. The only amphibians in the eastern end of Hoylake Beach were Common Frog (more terrestrial than people realise), and this Spring they were found breeding in a puddle on the beach with the tadpoles still present in early June. The data from 2021 is being analysed and further surveys to augment the dataset are being planned, at Hoylake, West Kirby and further afield to capture better information on coastal movements of amphibians. A manuscript for publication in a peer-reviewed journal is already drafted with this preliminary data – this is just the start of things, a scientific paper is more a status report than the final story. The story is however pointing to a potential future for when the habitats of Hoylake Beach could act as a corridor for Natterjack and other amphibians to move east toward the other sand dunes of Meols and Leasowe-Wallasey. And that would only be one part of the broader restoration of the living systems of the Wirral that would benefit people as much as the species that will prosper because of them.
What can you do to help? There is a consultation for residents of the Wirral to feedback to the council how the beach at Hoylake should be managed. This might include:
If you want to lend your voice to this, the consultancy ends 10th August, so make sure to make your thoughts known here: https://haveyoursay.wirral.gov.uk/hoylake-beach-information/survey_tools/hoylake-beach
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