The status and distribution of the ground beetle Harpalus melancholicus at Stackpole Warren in 2017
Stackpole Warren supports the only known British population of the Endangered ground beetle Harpalus melancholicus, the Stackpole Seed-eater. This data collection was commissioned to attempt to determine its current status and distribution on Stackpole Warren. This survey has done much to characterise the habitat occupied by H. melancholicus, with adults recorded only from two small patches of habitat where the toe of a vegetated sand-dune encroaches over outcropping limestone. The survey has also confirmed that H. melancholicus is a seed-eater, with Lesser Hawkbit Leontodon saxatilis and probably thyme Thymus sp. as food items. It is hypothesised that H. melancholicus is ecologically highly specialised, with a patchy occurrence at Stackpole Warren, but that additional occupied habitat patches remain to be discovered. Alternative hypotheses are also presented.
- Dull adnabod
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Dull adnabod
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- NRW_DS121121
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- Statws a dosbarthiad y chwilen ddaear Harpalus melancholicus yng Nghwningar Ystagbwll yn 2017
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Surveys were by visual searches in daytime and at night. Diurnal and nocturnal ground-searching was carried out on 22nd to 23rd August 2017. Eight to ten individuals of H. melancholicus were observed, all at night. This is noteworthy for a species otherwise known at Stackpole Warren from only four individuals recorded between 1992 and 2015.
- 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
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- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
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Database
Database
()
- Math
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Database – records held in WID Recorder 6. Documents: pdf of the report in the DMS report archive.
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Database
Database
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
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- Datganiad
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Surveys were by visual searches in daytime and at night. Diurnal and nocturnal ground-searching was carried out on 22nd to 23rd August 2017. Eight to ten individuals of H. melancholicus were observed, all at night. This is noteworthy for a species otherwise known at Stackpole Warren from only four individuals recorded between 1992 and 2015.
Allweddeiriau
Allweddair
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Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
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- ecological surveys
- invertebrate surveys
- Math
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Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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The status and distribution of the ground beetle Harpalus melancholicus at Stackpole Warren in 2017
Cyfyngiadau
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Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
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Cyfarwyddeb Cyfyngiadau Mynediad
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There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
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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
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Metadata
Metadata
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- 4f4c4942-4343-5764-6473-313231313231 XML
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- English
- Math o adnodd
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- 2024-05-31T09:41:06.026Z
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