Dorset Amphibian and Reptile Network (DARN)
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About us

About Us

DARN is an informal network of people in Dorset interested in our native reptiles and amphibians. Its purpose is to promote the conservation, recording and appreciation of native amphibians and reptiles in the county of Dorset. Operating mainly via email, DARN serves as a means of communication between volunteers, professionals and the general public.

Dorset has 12 of the UK's 13 native amphibian and reptile species, and a handful of non-native species. Its internationally-important heathlands are famous as national strongholds for the rare reptiles - sand lizard and smooth snake - and southwest England's only populations of our second-rarest amphibian, the natterjack toad. With such an important wildlife heritage in Dorset, several wildlife NGOs have their headquarters in the county, including the Amphibian and Reptile Conservation Trust (ARC). Together with the various statutory bodies and local authorities, this means Dorset has many wildlife professionals. DARN aims to form a link between all these people, and to nurture an appreciation among the general public for our herpetofaunal friends.

To get on the DARN mailing list, simply email Chris Gleed-Owen chris@cgoecology.com with 'DARN' in the subject header. You will receive regular emails telling you of news, items of interest, and projects to get involved in; and there will be at least one annual meeting. Dorset is home to some of the most important reptile and amphibian populations in the country, with a high concentration of protected sites, and a buzz of conservation activities and research projects. There are endless opportunities for helping out by volunteering, and there are already many volunteers in the county who give their time towards projects helping to conserve our herpetofauna, and raise awareness.

We encourage people to take part in reptile and amphibian survey projects like 'NARRS' and 'Make the Adder Count' coordinated by ARC, as well as rare reptile monitoring on sites that are short of voluntary surveyors. We help train people where necessary. There are also numerous opportunities for taking part in conservation tasks across the county (usually winter habitat management), on nature reserves managed by ARC, local authorities, Natural England, the Forestry Commission, RSPB, National Trust and other landowners. DARN aims to provide a link between these bodies and all the keen volunteers that are out there. If you want to offer your services, or you need volunteers for your herp-related projects, then get in touch!

News

News

Upton Heath Fire - update Friday 24 June 2011

Posted on Sunday 26th June, 2011
The following update was issued by Nick Moulton, Reptile Conservation Officer of Amphibian and Reptile Conservation:

Earlier this month a large fire decimated c. 60+ ha of the DWT heathland nature reserve at Upton. This fire was started deliberately and in drought conditions. It was started on land that is outside of the nature reserve, and due to the drought conditions, firstly burnt through the bog system. This limited Fire Brigade access to the fire edge and by the time the burning front reached the fire-break system its momentum was too large to stop.

This fire will have vastly affected all heathland wildlife; mammals, birds, reptiles, amphibians, insects and plants within their breeding system. For reptiles it could take c.20-40 years for both habitat and species population recovery. It is estimated that 1000’s of animals will have been directly killed by heat, smoke, loss of habitat and increased predation. This will have affected all 6 of our native species including sand lizard and smooth snake. Dorset’s urban heaths are constantly under pressure, with increasing visitor pressure and associated increasing new housing and population pressure.

All nature organisations try and reduce the legacy of these and the ongoing impacts by working with council planners to reduce direct and indirect public pressure, have increased site staff and volunteer wardening, and via the partnership of Urban Heaths Project improved Fire Brigade access routes to the sites, coordinated and joint Fire Brigade, Police and community involvement, not least via a large educational remit to schools and community groups, to reduce arson and ensure that reduced impacts on the heaths will occur.

As ever, the prompt and professional response by both the Fire Brigade and Police limited the impact of this catastrophic event and also reduced the chance of human lives being lost. It is very encouraging to note the prompt response by all the organisations staff and volunteers, i.e. DWT, ARC, DRAG, UHP, DCC, NT [& DARN] and the local community to DWT’s request to help with the reptile rescue. Superb co-ordination and organisation by Steve and Andy ensured that there was often 90 staff and volunteers on site undertaking rescues.

This has been ongoing for c.10 days and we estimate c.100+ reptiles [DWT estimate is several hundred], from all six species, have been rescued and relocated in the closest viable remaining habitats. Through such prompt action we know that, with the recovery of the habitats through time, both viable and robust reptile populations will also recover. This is only possible by the efforts of all the groups and volunteers who have helped with this project.

[The rescue has now stopped, and no more volunteers are required. Thanks to all the DARN volunteers who helped out, or offered to help out.]

Upton Heath fire - the reptile rescue continues

Posted on Wednesday 15th June, 2011
We were all shocked and saddened to see the devastating scale of the fire that swept across Upton Heath last Thursday (9.6.11). The sheer size of the burn - up to 100 hectares (250 acres) - and the amount of wildlife killed, is pretty horrific. With typical heathland densities of up to a thousand reptiles per hectare, the potential death toll beggars belief.

Still, if there is one glimmer of hope it is the overwhelming response from members of the public, including DARN members, who wanted to help in the aftermath. With thousands of surviving reptiles left without viable habitat or food source, an urgent rescue operation has been under way. Hundreds of reptiles have already been caught and moved to the nearest intact habitat. This will at least allow them to survive until the burnt areas develop a bit of grass cover.

Steve Davis, the Volunteering Programme Manager for Dorset Wildlife Trust which manages Upton Heath, said yesterday (14.6.11):

"The volunteering support for the reptile rescue has been simply astounding. I put out a call for volunteers over the weekend to join us at the Wildlife Centre to assist in walking the site. This was picked up by various media and broadcast as an appeal on the BBC local news (TV and radio). As a result, we had 52 volunteers turn up on Monday. Today we had 93 volunteers. Tomorrow – who knows! I’m keeping tight control on them all, my years of military training are proving very worthwhile!

"Rescues were estimated at around 100 or so reptiles on Monday. Today we had a total of 161 common lizard, 10 adder, 3 grass snake, 1 smooth snake, 14 sand lizard and 2 slow worm. At some point of course, we anticipate that numbers will drop off – and we will then shift our focus onto taking the opportunity for a bit of a litter pick while we are out there!

"Good to know that the media are also interested in following up with the good news bit – and we have BBC Newsround, Meridian News and Animal Rescue 24:7 out with us this week to cover the rescue work."

Digging for sand lizards on Turbary Common

Posted on Saturday 14th May, 2011

Today's DARN task to create bare-ground patches for sand lizard egg-laying was a great success. A merry band of seven volunteers spent the morning digging sand patches on Turbary Common heathland nature reserve managed by Bournemouth Borough Council. Patches of bare sand are essential for female sand lizards to lay their eggs in at this time of year. They dig short tunnels in firm sand in sunny locations. Much of Turbary Common has become too dominated by western gorse that leaves little bare ground. In turn, sand lizard numbers have declined as a result of poor breeding success.

We dug a total of 30 patches today, generally around 1m in size. From 9am til 12pm, we worked our way across all the heathland compartments that are known to support sand lizards. After clearing vegetation and turf with mattocks and loppers, we dug or scraped down to firm sand with garden spades. Sand lizards have suffered dramatic declines in recent years in nearly all areas where they are present, so hopefully today's task will start reversing the decline almost immediately. This year's warm spring has meant that the end-of-May egg-laying season has started early. We found two 'test burrows' (shallow preliminary diggings by egg-laden female sand lizards) on an existing patch of bare sand beside an abandoned fox earth. We hope that the new sand patches might be used by sand lizards over the next couple of weeks, and we will monitor this.

Today's energetic volunteers were: James Boyland (Bournemouth Borough Council), Jonathan Crewe, Stephanie Clark & Chris Gleed-Owen (DARN volunteers), Darren Millward & Tina Ballard (Stour Valley Volunteers), and Brian Whitehorn (local reptile photographer). See the photos posted on this site's Photo Gallery.


Genetic study investigates ailing adder populations

Posted on Wednesday 30th March, 2011

A research project is under way to investigate whether populations of Britain's only venomous snake - the adder (Vipera berus) - are suffering from genetic bottle-necking. Many conservationists believe adders are declining rapidly in Britain. Habitat degradation and fragmentation are factors often cited, but there may be genetic problems too. 

Adders are susceptible to localised threats such as scrub removal or hibernaculum destruction that can wipe out whole populations. Localised damage is often the result of well-meaning conservation work by land managers targeting other wildlife. These local extinctions add up nationally to 'death by a thousand cuts'.

Adders are not very effective at spreading and colonising new areas, and when they undergo a localised extinction, they rarely recover. Fragmented and isolated populations could then face genetic problems. Low genetic diversity in isolated populations can lead to 'inbreeding depression', making populations vulnerable to birth defects, low fertility, and general lack of fitness.

Researchers at London's Institute of Zoology are working with Oxford university and Natural England to study adder populations from around England this spring. Each adder is swabbed to take a DNA sample, and examined to measure its genetic profile. The researchers are sampling two types of population: smaller ones with fewer than 10 individuals, and larger ones with 20-30 individuals.

The project's fieldwork and staff costs are funded by Natural England and the other research partners. The laboratory analysis costs are being funded by a £1000 grant from the British Herpetological Society. Nigel Hand, a well-known herpetologist from Herefordshire, is the project officer. He is currently busy travelling the country, catching and swabbing adders.

To read more about the project, see the following news item: http://www.guardian.co.uk/environment/2011/mar/28/dwindling-adder-numbers-genetic-survey?CMP=twt_fd.


NARRS training days

Posted on Tuesday 29th March, 2011

Amphibian and Reptile Conservation is once again running training days for participants in NARRS surveys. They are open to all volunteer surveyors who can spare a few hours here and there over the spring, to survey a site within their own randomly-allocated 1km square.

Location: Furzebrook Village Hall, Purbeck, Dorset
Dates: 4th – 5th of April 2011
Cost: £10 to cover materials and basic refreshments
Contact: johnw.wilkinson@arc-trust.org to book a place, and for details.


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Dorset Amphibian and Reptile Network (DARN), c/o
Cranbourne House, 12 Knole Road, Bournemouth, Dorset, BH1 4DQ
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