SCIENTISTS from the Wildlife Trust of south and west Wales’ Cardigan Bay Marine Wildlife Centre, New Quay have shown that Welsh bottlenose dolphins produce high frequency signature whistles, the highest frequency recorded for the species so far.
Bottlenose dolphins live in an aquatic environment with few physical landmarks and often poor visibility, as a result sound is very important to them.
Bottlenose dolphins are well known for their use of individually distinctive identity signals, known as signature whistles, which they use to broadcast their identity and to maintain contact with one another.
A team of researchers studying the bottlenose dolphins in Cardigan Bay, have found evidence of geographic variation in signature whistle structure, with some Welsh bottlenose dolphins whistling at higher frequencies than those found in other populations.
“We found that at least one dolphin whose signature whistle was produced at higher than expected frequencies (>30kHz), a frequency band that is outside of human hearing” says Helen Hiley, the lead author of the paper who conducted the study as part of her honours degree at St Andrews University in collaboration with researchers at Cardigan Bay Marine Wildlife Centre and the University of Western Australia.
“The use of this higher frequency for bottlenose dolphin whistle communication has not been documented elsewhere for this species, it was previously believed bottlenose dolphins did not exploit the 30-40kHz frequency band” says Hiley.
This study brings the total number of wild bottlenose dolphin populations, where signature whistles have been identified, up to six.
“The findings of this study have significant implications for the management and conservation of regional populations of dolphins, such as Cardigan Bay population.
“The reasons for the use of these higher frequencies for whistle communication are unknown and further research is required to determine the extent of the use of these ultrasonic whistles” says Sarah Perry, the Wildlife Trust of South and West Wales’ Living Seas Science Officer,
Proposed work on dangerous Dorglwyd Junction set to be delayed
ELIN JONES AM and Ben Lake MP have expressed their frustration following a recent statement from the Welsh Government noting that work on the A487 Dorglwyd junction from Comins Coch, would be delayed.
The junction has witnessed several crashes and close-calls over recent years, with local residents calling for the development of a roundabout or similar traffic-calming measures.
The Welsh Government announced in September 2016 that a feasibility study would be undertaken by the following Summer as to consider potential options to improve the junction.
However, a recent letter from Ken Skates AM, Welsh Government Cabinet Secretary for Economy and Transport to Elin Jones AM and Ben Lake MP noted: “We are aware of the issues at the junction and an improvement scheme has been within our upgrades programme for some time. Unfortunately, due to limited financial resources and competing priorities, it has progressed slowly.”
“We are currently reviewing the scope of a possible improvement and considering solutions which are affordable and minimise environmental impact. When we are in a position to present outline solutions, a workshop with local stakeholders will be held. This is likely to be in early 2019.”
Elin Jones AM said: “Whilst I do welcome such clarification from the Cabinet Secretary on the next steps for Dorglwyd junction, it is disappointing to read that no major works for the transformation will happen due to the expense of the project. It is positive however to see that a smaller scale improvement is now to be pursued, with consultation likely to be undertaken in early 2019.”
John Roberts, local Ceredigion County Councillor for Faenor ward, added: “I share both Elin Jones’ and Ben Lake’s disappointment at the response from Ken Skates AM. The original plan was to encapsulate a more global project including the Llanbadarn bypass therefore we need to be more realistic in our aspirations for Dorglwyd corner. Having discussed the project on site with both Elin Jones AM and Ben Lake MP last week we were of the opinion that a much smaller project which could solve the Dorglwyd issue was feasible and be much cheaper than the present scheme. We will wait for the consultation period in 2019.”
Museum lights up the past
CEREDIGION MUSEUM has had a full refurbishment of its lighting thanks to £116,558 of grants from Welsh Governments Museums Archives and Libraries Division and the Rural Community Development Fund.
Museum Curator, Carrie Canham, said: “Lighting has been a problem for us for some time; the system was so old that we couldn’t get new bulbs for some of the fittings. Also, we love to put on theatrical and musical performances at the museum but we couldn’t create an atmosphere with just strip lights and footlights. We’ve now got great stage and display lighting and it’s transformed the whole experience for our audiences.
“The new lighting system is all LED, so not only does it look much better it is also more suitable for the more delicate exhibits and it saves us money on our lighting bill.”
The lighting was designed and installed by DBNAudile, who specialise in museum lighting.
The team managed to install the system with minimal disruption to visitors.
KeolisAmey awarded Wales and Borders Rail contract
KEOLISAMEY is pleased that the Welsh Government has announced its intention to award the contract to operate the Wales and Borders rail service and the South Wales Metro to KeolisAmey.
Upon successful completion of a 10-day standstill period, the contract will run from June 4, 2018, to October 14, 2033, with rail services transferring on October 14, 2018.
This standstill period is normal procurement practice.
KeolisAmey is a joint venture partnership of international public transport operator Keolis, and infrastructure asset management specialist Amey.
KeolisAmey currently runs the Docklands Light Railway (DLR) in London, which has one of the best records in UK rail – consistently better than 99% reliability. Additionally, we operate and maintain Greater Manchester’s Metrolink – the largest tram network in the UK.
Alistair Gordon, Chief Executive of Keolis UK, said: “This will be a transformative new rail service for Wales and its borders which will see Keolis once more combine its worldwide expertise in passenger operations with Amey’s engineering excellence.
“We look forward to the successful completion of the procurement process – this exciting contract will deliver for all of Wales. The procurement process was rigorous, resulting in transformative solutions for the benefit of all in Wales, and indeed, future generations.
“While the proposed changes won’t happen overnight, the railway will be unrecognisable in five years thanks to the vision of the Welsh Government.”
Andy Milner, Amey’s Chief Executive, said: “Building on our successful partnership with Keolis, which already sees us deliver two high performing services – the Greater Manchester Metrolink and London’s DLR – we are honoured to be asked to operate the Wales and Borders service.
“This is a great opportunity for us to use our joint capabilities to deliver a first-rate service for Wales. We will be focused on working with Transport for Wales to transform the existing infrastructure and introduce new trains to significantly improve the passenger experience, as well as creating hundreds of new jobs and apprenticeship opportunities.”
KeolisAmey is unable to make any further comment until the procurement process has concluded and the contract has been awarded.
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