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Metadata: 1983 Alconbury Environmental Consultants, The Fleet, Dorset, Quadrat survey of Zostera and Ruppia
Abstract:
Survey â??Holmes, N.T.H. 1983. The distribution of Zostera and Ruppia in the Fleet. Report to Nature Conservancy Council, Alconbury Environmental Consultants. A copy of the report is held at English Nature (Dorset Team). DK from report:- 1st of 3 surveys by author, covers Fleet (Dorset). Previous marine plant surveys carried out on Fleet shown few mapped exact species distribution. This survey collect data to form baseline, assess stability populations of Eelgrass species - Zostera noltii and Zostera angustifolia, and Tasselweeds species - Ruppia cirrhosa (entered onto database as R.spiralis) and Ruppia maritima. Other species included algaes: Fucus, Enteromorpha, Cladophora and Ulva. Method:- 1st two weeks August 1983. Survey area:- whole of Fleet, west and east ends less rigorously than main body of Fleet. In Fleet, and below the Narrows no aquatic angiosperms encountered, author took 20 quasi-quadrats on foot along north shore. Samples taken from quadrats (about 100m2), each quadrat (radius = 5.5 meters approx.) 2.5 meters loop of anchor rope over pole thrust into mud in centre of quadrat, distance from pole to end of boat = 5.5 meters. Using oars or punting pole, boat rotated around pole several times, about 100m2 inspected. Random site selection (A-J), determined by access (by foot / row boat). Appendix 1: quadrat position. Data collection on relative abundance of individual aquatic angiosperms species within each surveyed quadrats. Semi - quantitatively estimating area covered by individual species within quadrat, and percentage expressed of total area investigated. In practical terms obviously prone to considerable recorder error, but reduced by recording within 100m quadrats (simplifies percentage estimates regarded each 1m2 area as 1% of total). Report details on plant identification, information on depth, substrate and associated algae approx. 50 algal and mollusc species - samples collected for others; re Fleet Study Group. Presence of Sargassum noted, details passed to Dr Farnham, Portsmouth University. Results:- raw data pertaining to both substrate and flora within each 100m2 quadrats (Appendix 2). Table provides information on relative proportions of organic mud, inorganic mud, sand, gravel, pebbles and cobbles within each quadrat, and total vegetational cover. Algal data given for firmly attached fucoids, Lamprothamnion and free floating Enteromorphas, Cladophoraleans and Ulvas. Percentage surface area of quadrats covered by Zostera and Ruppia species given. Table summarises date and time quadrats sampled. Results show Z.angustifolia, Z. noltii and R. cirrhosa common in Fleet, and R. maritima less frequent and locally distributed, no other angiosperms recorded. Fig.1 importance of these species in different quadrats varied considerably, Fig.2 details distribution and extent for 4 angiosperms and Lamprothamnion, Fig.3, (Table 10) summarises relative importance of species in sites (A-H) of Fleet. Within discussion and recommendations, community succession throughout Fleet detailed, 1983 survey clearly illustrates zonation of individual species along length of Fleet, and results confirm previous findings although many new features of floras and fauna emerged. Reference given to each 4 species of angiosperms, L. papulosum and algae recorded. Survey data based on visual estimates of cover provided by individual species in 100m2 quadrats, at best survey data regarded valuable in evaluating relative abundanceâ??s of various species in different areas of Fleet, and baseline for future changes. Author specifies that data not to be used, however crudely in quantitative evaluations of standingcrop. Tidal cover estimates (raw data tables) prone to additional problems due to unattached algal. Data to be regarded as accurate and representative record of distribution and relative importance of different aquatic flowering plants in Fleet (August 1983). Substrate records very subjective evaluations of organic / inorganic matter. Generally, clear black organic substrates dominant upperhalf of Fleet, grey inorganic muds predominate northern shore. Threats to Zostera and Ruppia discussed. Authors recommends future investigation within 3 years, raw data requires statistical treatment to evaluate significant correlations between species with depth, substrate, salinity and position. More control needed on discharges into Fleet and, Swannary (Abbotsbury) analyse swan population changes to assist nutrient budget investigations.
Data holder:
Natural England
Click on the red button for resource contact details:
- Click on the red button for resource contact details
Use constraints:
No restrictions to public access
Other details | ||
Internal code | Internally assigned metadata identifier | 3067 |
Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 1983 Alconbury Environmental Consultants, The Fleet, Dorset, Quadrat survey of Zostera and Ruppia |
File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | 3f0b9bc71f51c0c6fb7fd93993e09016 |
Resource Identifier | This is the code assigned by the data owner. | MRLRC00100000558 |
Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 1983-08-03 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 1983-08-11 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Survey â??Holmes, N.T.H. 1983. The distribution of Zostera and Ruppia in the Fleet. Report to Nature Conservancy Council, Alconbury Environmental Consultants. A copy of the report is held at English Nature (Dorset Team). DK from report:- 1st of 3 surveys by author, covers Fleet (Dorset). Previous marine plant surveys carried out on Fleet shown few mapped exact species distribution. This survey collect data to form baseline, assess stability populations of Eelgrass species - Zostera noltii and Zostera angustifolia, and Tasselweeds species - Ruppia cirrhosa (entered onto database as R.spiralis) and Ruppia maritima. Other species included algaes: Fucus, Enteromorpha, Cladophora and Ulva. Method:- 1st two weeks August 1983. Survey area:- whole of Fleet, west and east ends less rigorously than main body of Fleet. In Fleet, and below the Narrows no aquatic angiosperms encountered, author took 20 quasi-quadrats on foot along north shore. Samples taken from quadrats (about 100m2), each quadrat (radius = 5.5 meters approx.) 2.5 meters loop of anchor rope over pole thrust into mud in centre of quadrat, distance from pole to end of boat = 5.5 meters. Using oars or punting pole, boat rotated around pole several times, about 100m2 inspected. Random site selection (A-J), determined by access (by foot / row boat). Appendix 1: quadrat position. Data collection on relative abundance of individual aquatic angiosperms species within each surveyed quadrats. Semi - quantitatively estimating area covered by individual species within quadrat, and percentage expressed of total area investigated. In practical terms obviously prone to considerable recorder error, but reduced by recording within 100m quadrats (simplifies percentage estimates regarded each 1m2 area as 1% of total). Report details on plant identification, information on depth, substrate and associated algae approx. 50 algal and mollusc species - samples collected for others; re Fleet Study Group. Presence of Sargassum noted, details passed to Dr Farnham, Portsmouth University. Results:- raw data pertaining to both substrate and flora within each 100m2 quadrats (Appendix 2). Table provides information on relative proportions of organic mud, inorganic mud, sand, gravel, pebbles and cobbles within each quadrat, and total vegetational cover. Algal data given for firmly attached fucoids, Lamprothamnion and free floating Enteromorphas, Cladophoraleans and Ulvas. Percentage surface area of quadrats covered by Zostera and Ruppia species given. Table summarises date and time quadrats sampled. Results show Z.angustifolia, Z. noltii and R. cirrhosa common in Fleet, and R. maritima less frequent and locally distributed, no other angiosperms recorded. Fig.1 importance of these species in different quadrats varied considerably, Fig.2 details distribution and extent for 4 angiosperms and Lamprothamnion, Fig.3, (Table 10) summarises relative importance of species in sites (A-H) of Fleet. Within discussion and recommendations, community succession throughout Fleet detailed, 1983 survey clearly illustrates zonation of individual species along length of Fleet, and results confirm previous findings although many new features of floras and fauna emerged. Reference given to each 4 species of angiosperms, L. papulosum and algae recorded. Survey data based on visual estimates of cover provided by individual species in 100m2 quadrats, at best survey data regarded valuable in evaluating relative abundanceâ??s of various species in different areas of Fleet, and baseline for future changes. Author specifies that data not to be used, however crudely in quantitative evaluations of standingcrop. Tidal cover estimates (raw data tables) prone to additional problems due to unattached algal. Data to be regarded as accurate and representative record of distribution and relative importance of different aquatic flowering plants in Fleet (August 1983). Substrate records very subjective evaluations of organic / inorganic matter. Generally, clear black organic substrates dominant upperhalf of Fleet, grey inorganic muds predominate northern shore. Threats to Zostera and Ruppia discussed. Authors recommends future investigation within 3 years, raw data requires statistical treatment to evaluate significant correlations between species with depth, substrate, salinity and position. More control needed on discharges into Fleet and, Swannary (Abbotsbury) analyse swan population changes to assist nutrient budget investigations. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Survey run by Alconbury Environmental Consultants (Nigel Holmes). Survey â??Holmes, N.T.H. 1983. The distribution of Zostera and Ruppia in the Fleet. Report to Nature Conservancy Council, Alconbury Environmental Consultants. A copy of the report is held at English Nature (Dorset Team). DK from report:- 1st of 3 surveys by author, covers Fleet (Dorset). Previous marine plant surveys carried out on Fleet shown few mapped exact species distribution. This survey collect data to form baseline, assess stability populations of Eelgrass species - Zostera noltii and Zostera angustifolia, and Tasselweeds species - Ruppia cirrhosa (entered onto database as R.spiralis) and Ruppia maritima. Other species included algaes: Fucus, Enteromorpha, Cladophora and Ulva. Method:- 1st two weeks August 1983. Survey area:- whole of Fleet, west and east ends less rigorously than main body of Fleet. In Fleet, and below the Narrows no aquatic angiosperms encountered, author took 20 quasi-quadrats on foot along north shore. Samples taken from quadrats (about 100m2), each quadrat (radius = 5.5 meters approx.) 2.5 meters loop of anchor rope over pole thrust into mud in centre of quadrat, distance from pole to end of boat = 5.5 meters. Using oars or punting pole, boat rotated around pole several times, about 100m2 inspected. Random site selection (A-J), determined by access (by foot / row boat). Appendix 1: quadrat position. Data collection on relative abundance of individual aquatic angiosperms species within each surveyed quadrats. Semi - quantitatively estimating area covered by individual species within quadrat, and percentage expressed of total area investigated. In practical terms obviously prone to considerable recorder error, but reduced by recording within 100m quadrats (simplifies percentage estimates regarded each 1m2 area as 1% of total). Report details on plant identification, information on depth, substrate and associated algae approx. 50 algal and mollusc species - samples collected for others; re Fleet Study Group. Presence of Sargassum noted, details passed to Dr Farnham, Portsmouth University. Results:- raw data pertaining to both substrate and flora within each 100m2 quadrats (Appendix 2). Table provides information on relative proportions of organic mud, inorganic mud, sand, gravel, pebbles and cobbles within each quadrat, and total vegetational cover. Algal data given for firmly attached fucoids, Lamprothamnion and free floating Enteromorphas, Cladophoraleans and Ulvas. Percentage surface area of quadrats covered by Zostera and Ruppia species given. Table summarises date and time quadrats sampled. Results show Z.angustifolia, Z. noltii and R. cirrhosa common in Fleet, and R. maritima less frequent and locally distributed, no other angiosperms recorded. Fig.1 importance of these species in different quadrats varied considerably, Fig.2 details distribution and extent for 4 angiosperms and Lamprothamnion, Fig.3, (Table 10) summarises relative importance of species in sites (A-H) of Fleet. Within discussion and recommendations, community succession throughout Fleet detailed, 1983 survey clearly illustrates zonation of individual species along length of Fleet, and results confirm previous findings although many new features of floras and fauna emerged. Reference given to each 4 species of angiosperms, L. papulosum and algae recorded. Survey data based on visual estimates of cover provided by individual species in 100m2 quadrats, at best survey data regarded valuable in evaluating relative abundanceâ??s of various species in different areas of Fleet, and baseline for future changes. Author specifies that data not to be used, however crudely in quantitative evaluations of standing crop. Tidal cover estimates (raw data tables) prone to additional problems due to unattached algal. Data to be regarded as accurate and representative record of distribution and relative importance of different aquatic flowering plants in Fleet (August 1983). Substrate records very subjective evaluations of organic / inorganic matter. Generally, clear black organic substrates dominant upperhalf of Fleet, grey inorganic muds predominate northern shore. Threats to Zostera and Ruppia discussed. Authors recommends future investigation within 3 years, raw data requires statistical treatment to evaluate significant correlations between species with depth, substrate, salinity and position. More control needed on discharges into Fleet and, Swannary (Abbotsbury) analyse swan population changes to assist nutrient budget investigations. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | NDGO0005 | |
Keyword title | data.gov.uk | |
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biodiversity | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos taxonomic abundance | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 50.6566 |
East | The eastern-most limit of the data resource in decimal degrees | -2.4683 |
South | The southern-most limit of the data resource in decimal degrees | 50.5762 |
West | The western-most limit of the data resource in decimal degrees | -2.6102 |
Regional sea | Eastern Channel | |
Western Channel and Celtic Sea | ||
30E7 | ||
Responsible organisations | ||
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Dorset Wildlife Trust | |
Individual name | Peter Tinsley | |
Position name | Living Seas Manager | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Natural England | |
Phone | +44 (0)300 060 3900 | |
Fax | +44 (0)300 060 2356 | |
Delivery point | Foss House, Kings Pool, 1-2 Peasholme Green | |
Postal code | YO1 7PX | |
City | York | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Alconbury Environmental Consultants | |
Individual name | Nigel Holmes | |
Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
Organisation name | Natural England | |
Position name | Data Manager | |
Phone | +44 (0)300 060 3900 | |
Fax | +44 (0)300 060 2356 | |
Delivery point | Foss House, Kings Pool, 1-2 Peasholme Green | |
Postal code | YO1 7PX | |
City | York | |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | otherRestrictions | |
20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | No restrictions to public access |
21 Conditions for Access and Use - Use limitation | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced. CC BY 4.0 |
Available data formats | ||
Data format | Format in which digital data can be provided for transfer | Database |
Version info | ||
Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2013-02-14 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-14 |
Metadata date | The date when the content of this metadata record was last updated. | 2021-05-04 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery metadata standard |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.8 |