The status and distribution of the scarab beetles Rhysothorax rufa and Onthophagus nuchicornis on Welsh dunes in 2017
The Endangered Red Dune Crawler Rhysothorax rufa has only been recorded from a handful of dune systems in England and Wales, and has not been recorded in England for over fifteen years. In Wales, it is known from Kenfig Burrows, where a single adult was found on 20th July 1994, and from Merthyr Mawr Warren, where single adults were recorded in June 1981 and 21st May 2006. Adults feed on detritus in sand. A survey in 2017 failed to find the beetle at either location. Current management at both Kenfig Burrows and Merthyr Mawr Warren is considered sympathetic for the conservation of this species. The Vulnerable Dillwyn's Dung Beetle Onthophagus nuchicornis was formerly widespread across England and Wales. It has declined dramatically in England and is now known from just five of 30 previous locations, where it is recorded infrequently and often as single individuals. In Wales, it is restricted to coastal sand dune systems and there are records from fifteen sites, from Merthyr Mawr Warren in the south-east to Morfa Harlech in the north-west. Larvae can be found in the dung of a range of mammals but are probably dependent upon that of large herbivores such as cattle, ponies and sheep. A survey in 2017 of the known sites, utilising both hand-searching and baited pitfall traps, found Onthophagus nuchicornis at seven localities - Kenfig Burrows (975 adults), Merthyr Mawr Warren (36), Morfa Harlech (1), Oxwich Burrows (4), Pembrey Burrows (32), Pennard Burrows (4) and Whiteford Burrows (5). The population on Kenfig Burrows is the strongest in the UK. Elsewhere, absence and low population levels are strongly correlated to cessation of grazing and the quantity and quality of available dung. Management, including grazing regimes, are considered sympathetic for the conservation of this species at three sites (Kenfig Burrows, Merthyr Mawr Warren and Whiteford Burrows), although there is room for improvement. Increased access for cattle to mobile dunes and disturbed areas of open sand would undoubtedly benefit Onthophagus nuchicornis. Management recommendations are made for all currently-occupied sites.
- Dull adnabod
- Rhychwant
- Dosbarthiad
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- Cynnwys
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- Metadata
Dull adnabod
- Dynodydd
- NRW_DS121588
- Teitl Amgen
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- Statws a dosbarthiad chwilod y dom Rhysothorax rufa ac Onthophagus nuchicornis ar dwyni Cymru yn 2017
- Laith Metadata
- English
- Datganiad
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Surveys were by visual searches and baited pitfall traps.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2018-05-01
Ystod amser
- Dyddiad cychwyn
- 2017-05-20
- Dyddiad gorffen
- 2017-06-18
- Categori pwnc
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- Biota
Rhychwant
Rhychwant
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- Wales (WLS)
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Dosbarthiad
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Database
Database
()
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[A] Records held within Welsh Invertebrate Database - Recorder 6 [B] PDF of the report is available.
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Database
Database
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
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Surveys were by visual searches and baited pitfall traps.
Allweddeiriau
Allweddair
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Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
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- ecological surveys
- entomological survey
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- Onthophagus nuchicornis
- Rhysothorax rufa
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Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
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The status and distribution of the scarab beetles Rhysothorax rufa and Onthophagus nuchicornis on Welsh dunes in 2017
Cyfyngiadau
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Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
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Cyfarwyddeb Cyfyngiadau Mynediad
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© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Attribution statement: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313231353838 XML
- Laith Metadata
- English
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Welsh Invertebrate Database (WID)
NRW_DS23774
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- 2024-05-31T09:41:07.031Z
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