An Assessment of Juniperus communis (Juniper) Sub-species Hemisphaerica in Britain using Molecular Markers
This dataset contains the results of genetic analysis aimed at ascertaining the distinction of subspecies of Juniper comminis (juniper) a morphologically variable dioecious species native to the British Isle. Within Britain the extremes of this variation are recognised by two sub-species ssp. communis and ssp. nana but many intermediate forms are known and two further sub-species are also recognised by some- ssp. depressa and ssp. hemisphaerica. It has been suggested that these sub-species should be considered as varieties of J. communis, however because of the rarity of the ssp. hemisphaerica in Britain further clarification of its taxonomic status was desirable. The ssp. hemisphaerica, while found in mountainous areas of southern Europe and north-west Africa, is confined to two main small populations on low maritime cliffs in the UK. Other population, also consisting of less than 10 individuals, is found on Ramsay Island on the Pembrokeshire coast, south Wales. In addition, 4 other individuals from Wales have been considered to show morphological characters that are indicative of ssp. hemisphaerica, the populations being at Skrinkle Haven (Pembrokeshire) and Holyhead Mountain (Anglesey). The aims of the project were: - to ascertain whether plants named as Juniperus communis ssp. hemisphaerica form a cohesive genetic group distinct from Juniperus communis ssp. communis; - to assess the extent of clonal growth in British populations of ssp. hemisphaerica. The dataset also confirms the status of a UK BAP species to determine future conservation effort.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS108658
- Alternative Title
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- Asesu meryw Juniperus communis is-rh. hemisphaerica ym Mhrydain gan ddefnyddio marcwyr molecwlar
- Metadata Language
- English
- Lineage
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All available populations/individuals of ssp. hemisphaerica were sampled (22 plants). To place the results into context, ssp. communis from neighbouring localities were sampled where possible as well as other populations from further afield within the UK (50 plants in total) to capture the range of genetic diversity found within this taxon. DNA was extracted from silica dried leaf material using a Qiagen DNeasy 96 Plant Kit. The genetic techniques used were nuclear microsatellites and chloroplast markers, data analysis was then undertaken. The contractors are experts in this field and so were chosen for the reliability of their research.
- Dataset Reference Date (Publication)
- 2008-12-31
Temporal Extent
- Begin date
- 2007-01-01
- End date
- 2008-12-31
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- Scotland (SCT)
- Geographic Extent
- Wales (WLS)
- Geographic Extent
- England (ENG)
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Distribution
- Format Type and Description
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Documents
()
- Specification
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[A] Hardcopy report- paper and electronic version (PDF & MS Word) Ffynnon Reference Number (DCT-09-049646)
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Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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All available populations/individuals of ssp. hemisphaerica were sampled (22 plants). To place the results into context, ssp. communis from neighbouring localities were sampled where possible as well as other populations from further afield within the UK (50 plants in total) to capture the range of genetic diversity found within this taxon. DNA was extracted from silica dried leaf material using a Qiagen DNeasy 96 Plant Kit. The genetic techniques used were nuclear microsatellites and chloroplast markers, data analysis was then undertaken. The contractors are experts in this field and so were chosen for the reliability of their research.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- juniper
- juniperus communis
- molecular markers
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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An assessment of Juniperus communis ssp hemisphaerica in Britain using molecular markers
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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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.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313038363538 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:37:28.508Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0