Monitro nodweddion Infertebratau o Safleoedd o Ddiddordeb Gwyddonol Arbennig (SoDdGA): asesu ac adolygu statws y corynod Porrhomma rosenhaueri yn Ogof y Ci ac Ogof Ffynnon Taf De Cymru yn 2017
Porrhomma rosenhaueri is a rare cave-dwelling spider with a highly restricted distribution in the UK, known only from Ogof y Ci near Merthyr Tydfil and Lesser Garth Cave near Cardiff. This survey was undertaken to determine whether the species remained present in the Ogof y Ci cave system and to assess the feasibility of establishing a Common Standards Monitoring (CSM) protocol for long-term population monitoring. The survey also revisited the existing CSM monitoring programme for Lesser Garth Cave to assess the condition of the spider population and the ecological condition of the cave habitat. Surveys undertaken in 2017 confirmed the continued presence of Porrhomma rosenhaueri at both sites, including the first record from Ogof y Ci since 1971. Results indicate that both cave systems support important cave invertebrate assemblages and remain significant sites for the conservation of this species.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS121120
- Teitl Amgen
-
- Laith Metadata
- English
- Datganiad
-
Survey data were collected through visual searches of suitable cave habitats. Two site visits were undertaken during September and October 2017 to survey Ogof y Ci and other accessible sites within the Nant Glais Caves SSSI for Porrhomma rosenhaueri and associated cave fauna. The species was recorded within the Ogof y Ci cave system, providing the first confirmed record since 1971 and enabling the development of recommendations for future monitoring. In October 2017, the established Common Standards Monitoring (CSM) protocol for Lesser Garth Cave was repeated to assess the status and distribution of the spider population within the cave. Records of spiders, webs and habitat condition were collected and compared with previous surveys to evaluate population status and support ongoing conservation monitoring.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2018-01-01
Ystod amser
- Dyddiad cychwyn
- 2017-09-09
- Dyddiad gorffen
- 2017-10-31
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Database
(
Unknown
)
- Math
-
Species records: Recorder 6
-
Documents
(
Unknown
)
- Math
-
Report in pdf format
-
Database
(
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 data were collected through visual searches of suitable cave habitats. Two site visits were undertaken during September and October 2017 to survey Ogof y Ci and other accessible sites within the Nant Glais Caves SSSI for Porrhomma rosenhaueri and associated cave fauna. The species was recorded within the Ogof y Ci cave system, providing the first confirmed record since 1971 and enabling the development of recommendations for future monitoring. In October 2017, the established Common Standards Monitoring (CSM) protocol for Lesser Garth Cave was repeated to assess the status and distribution of the spider population within the cave. Records of spiders, webs and habitat condition were collected and compared with previous surveys to evaluate population status and support ongoing conservation monitoring.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- biological monitoring
- cave spider
- biological surveys
- ecological surveys
- porrhomma rosenhaueri
- caves
- invertebrate surveys
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
-
Monitoring Invertebrate features on SSSIs: assessing and reviewing the status of the troglobitic spider Porrhomma rosenhaueri in Ogof y Ci and Lesser Garth Cave, South Wales 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
-
© 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
- 4f4c4942-4343-5764-6473-313231313230 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Welsh Invertebrate Database (WID)
NRW_DS23774
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-09-29T15:04:52.002Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0