Statws a dosbarthiad y chwilen ddaear Harpalus melancholicus yng Nghwningar Ystagbwll yn 2017
Stackpole Warren supports the only known British population of the Endangered ground beetle Harpalus melancholicus (the Stackpole Seed-eater). This survey was commissioned to assess the current status and distribution of the species within Stackpole Warren and to improve understanding of its ecological requirements. Surveys undertaken in August 2017 recorded between eight and ten individuals, representing a notable increase in observations compared with previous records. The survey identified H. melancholicus in two small habitat patches where vegetated sand dunes encroach onto exposed limestone and provided evidence that the species feeds on the seeds of Lesser Hawkbit (Leontodon saxatilis) and probably thyme (Thymus spp.). The findings suggest that H. melancholicus is a highly specialised species with a restricted and patchy distribution, although additional occupied habitat patches may remain undiscovered.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS121121
- Laith Metadata
- English
- Datganiad
-
Survey work was undertaken at Stackpole Warren on 22 and 23 August 2017 to assess the status and distribution of Harpalus melancholicus. Data were collected through targeted visual searches carried out during both daytime and night-time periods, with diurnal and nocturnal ground searches focused on suitable habitat. Records of adult beetles and associated habitat characteristics were collected, including observations of potential food plants and habitat conditions. Between eight and ten individuals were recorded, all during nocturnal surveys. Survey results were used to assess the distribution, habitat associations and conservation status of the species within its only known British locality.
- Gwybodaeth ychwanegol
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Telfer, M.G. 2018. The status and distribution of the ground beetle Harpalus melancholicus at Stackpole Warren in 2017. NRW Evidence Report No: 247, 26 pp, Natural Resources Wales, Bangor.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2018-01-01
Ystod amser
- Dyddiad cychwyn
- 2017-08-22
- Dyddiad gorffen
- 2017-08-23
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
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Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
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Documents
(
Unknown
)
- Math
-
Report in pdf format
-
Database
(
Unknown
)
- Math
-
Species records: Recorder 6
-
Documents
(
Unknown
)
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Cydymffurfiad
- Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Eglurhad
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
-
Survey work was undertaken at Stackpole Warren on 22 and 23 August 2017 to assess the status and distribution of Harpalus melancholicus. Data were collected through targeted visual searches carried out during both daytime and night-time periods, with diurnal and nocturnal ground searches focused on suitable habitat. Records of adult beetles and associated habitat characteristics were collected, including observations of potential food plants and habitat conditions. Between eight and ten individuals were recorded, all during nocturnal surveys. Survey results were used to assess the distribution, habitat associations and conservation status of the species within its only known British locality.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- ecological surveys
- invertebrate surveys
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
-
The status and distribution of the ground beetle Harpalus melancholicus at Stackpole Warren in 2017
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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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.
Datganiad Priodoli
- Cyfyngiadau eraill
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313231313231 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-09-29T15:08:03.902Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0