INCC and partners are aiming to save a population of one of the UK’s rarest and fastest declining mammal species, the Water Vole (Arvicola amphibius).

“We have lost so many of our Water Voles in Wales over the past fifty years or so. If we don’t do something urgently, we may end up losing this wonderful animal for good. Projects like this, that bring together conservationists, universities and local communities give us hope that we can save the Water Vole and lots of other species and their habitats as well”.

Iolo Williams
T.V. Broadcaster and Naturalist

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Water Voles are thought to have declined by over 90% in recent years due to a combination of habitat loss and predation by non-native American Mink (Neovison vison) and are now classed as ‘endangered’ in the UK.

Changes in our understanding of Water Vole habitat

Upland habitats may provide a refuge for Water Voles where Mink are much less commonly seen.

Mink investigating the ‘tunnel cam’

Until relatively recently it was thought that upland habitats were unsuitable for Water Voles and as a result little survey effort has gone into those habitats. Since then, Water Voles have been found in upland habitats scattered across Wales but their ecology here is still little understood.

It is possible that the population around Pen y Cymoedd and the Rhondda Cynon Taff/Neath Port Talbot uplands is significant on a UK scale, so a deeper understanding of their population dynamics is key to helping reverse their decline.

Upland Water Vole habitat

Innovative Water Vole research

INCC’s upland Water Vole project, funded by the Pen Y Cymoedd Wind Farm Community Fund, will undertake vital and innovative research to further our understanding of how to help Water Voles in upland landscapes.

Importantly, the project will ensure that local people and communities are at the heart of delivering conservation action and that local volunteers will have the knowledge and resources to become the water vole’s strongest champions in future.

The project has three overarching objectives.

Obj 1: Prevent the local extinction of Water Vole populations in and around the upland landscape of Pen y Cymoedd.

This will be achieved by undertaking detailed habitat and species surveys, innovative research, community engagement, advocacy and guidance for land managers.

A characteristic Water Vole latrine

Typical feeding remains left by Water Voles

Obj 2: Engage with local communities, groups, schools and individuals so that people of all ages can be inspired by Water Voles and the wildlife they share their landscape with.

Informing and involving local people so that they can have direct involvement in Water Vole conservation measures now and into the future.

Looking for Water Vole field signs

Obj 3: Create a Wales-wide approach to upland Water Vole conservation in Wales, based on the scientific evidence and information gained through the project.

Innovative techniques and modelling used during the project will be used to inform environmental decision makers how best to conserve Water Vole populations across Wales and what needs to be done.

Organisations such as Natural Resources Wales, Wildlife Trusts, Lost Peatlands Project and Local Authorities can all benefit from the project’s findings.

A ‘tunnel cam’, an innovative method for looking for Water Voles

Local people are key

Local people and communities will be involved in all aspects of the project, from research, mapping and surveys, to practical habitat management and restoration.

The project will raise awareness of the Water Vole locally through volunteering opportunities and engagement initiatives.

Importantly, the project will celebrate just how important the local landscape is for this incredibly rare mammal and the role that local people and communities have played in safeguarding the species and contributing to its long-term survival.

Peatland restoration work in the uplands

Understanding how Water Voles use the landscape

The project will support INCC officers, volunteers and students at Aberystwyth University to undertake genetic analysis of known and newly found Water Vole colonies in the upland landscape of the project area.

Water Vole droppings being collected for DNA analysis

This innovative research will reveal just how connected the colonies are and ascertain the level of genetic mixing. This would indicate whether Water Voles are moving across the landscape.

If the results show there is poor connectivity between colonies, then that evidence will help guide future habitat management/creation to help improve connectivity.

As part of the project INCC employed 2 new members of staff tasked with surveying, mapping and planning community events. Eliza and Richard have been instrumental in finding many new Water Vole populations across the project area, contributing greatly to our knowledge of upland Water Voles.

INCC staff demonstrating upland Water Vole survey techniques to volunteers

Unfortunately they also found evidence of American Mink spreading into the upland habitats and this has led to INCC and partners establishing the South Wales American Mink Partnership (SWAMP). This group includes Neath Port Talbot County Council, National Resources Wales, The Wildlife Trust of South and West Wales, Bannau Brycheiniog National Park Authority, Gwent Wildlife Trust and the Lost Peatlands Project. More details can be found here (https://www.natureconservation.wales/establishing-the-new-south-wales-american-mink-partnership-swamp/).

The partnership contacted The Waterlife Recovery Trust who have run an innovative American Mink control project in East Anglia (Waterlife Recovery Trust – Saving our native wildlife from the introduced American Mink).