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Metadata: 2009 Scottish Natural Heritage (SNH) Lamlash Bay broad-scale mapping survey
Abstract:
In September 2008 a No Take Zone (NTZ) was established in Lamlash Bay (Isle of Arran, North Ayrshire) in Scotland following a consultation for a fishery order (under the Inshore Fishing (Scotland) Act 1984). The proposed NTZ was passed by the Scottish Parliament prohibiting all sea fishing within the NTZ. This 2009 survey involved an acoustic mapping survey with ground-truthing (camera deployments and sediment sampling) to create maps of the habitats and biotopes within the site in a Geographical Information System (GIS). The aim of the survey was complete a baseline survey in Lamlash Bay to describe the seabed environment and map the seabed habitats in Lamlash Bay which was started in 2008. In order to complete the recording and characterisation of the habitats in Lamlash Bay additional acoustic and camera surveys were carried out in 2009 to acquire data in the areas not surveyed in 2008. The aim of the acoustic element of the survey was to identify different backscatter returns and describe as well as delineate the extent of the various seabed habitat types occurring in and around Lamlash Bay. A digital sidescan sonar mosaic, in conjunction with single beam echo sounder derived bathymetry, provided the initial broadview to map the substrata present throughout the survey area as well as allowing the identification of any features of interest. The aim of the ground-truthing element of the survey was to provide a description of the richness and diversity of the habitats on both rocky reef and the softer sediments. The biotope distribution and species composition was developed through interpretation of dropdown video footage and digital still photography, taken after evaluation of the sidescan mosaic. The results of all elements of the survey were combined with data collected in 2008 to create a Geographical Information System (GIS) which enabled a high level of processing, interpretation and display of the sidescan sonar mosaic, bathymetry, substrata types, biotopes and the digital photography. The 2009 survey work acquired baseline environmental data from the shallow sections (areas inside the 10 m contour). The 2009 field work (acoustic and drop-down camera surveys) was undertaken between 9 and 13 September 2009 with all survey operations conducted from Seastar Survey Ltd.â??s vessel Otarie. The survey mobilisation and de-mobilisation took place in Ardrossan Harbour, Scotland, on 7th September and 14th September respectively. This baseline data stored in Marine Recorder.
Data holder:
NatureScot (HQ Inverness)
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| Other details | ||
| Internal code | Internally assigned metadata identifier | 11566 |
| 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. | 2009 Scottish Natural Heritage (SNH) Lamlash Bay broad-scale mapping survey |
| 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. | c1df2b8423f5931a70d87b3ac2202828 |
| Resource Identifier | This is the code assigned by the data owner. | GB-SCT-SNH-ME-000120-MRSNH01600000007-LAM |
| 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 | 2009-09-08 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2009-09-13 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | urn:ogc:def:uom:EPSG::9001 |
| 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. | In September 2008 a No Take Zone (NTZ) was established in Lamlash Bay (Isle of Arran, North Ayrshire) in Scotland following a consultation for a fishery order (under the Inshore Fishing (Scotland) Act 1984). The proposed NTZ was passed by the Scottish Parliament prohibiting all sea fishing within the NTZ. This 2009 survey involved an acoustic mapping survey with ground-truthing (camera deployments and sediment sampling) to create maps of the habitats and biotopes within the site in a Geographical Information System (GIS). The aim of the survey was complete a baseline survey in Lamlash Bay to describe the seabed environment and map the seabed habitats in Lamlash Bay which was started in 2008. In order to complete the recording and characterisation of the habitats in Lamlash Bay additional acoustic and camera surveys were carried out in 2009 to acquire data in the areas not surveyed in 2008. The aim of the acoustic element of the survey was to identify different backscatter returns and describe as well as delineate the extent of the various seabed habitat types occurring in and around Lamlash Bay. A digital sidescan sonar mosaic, in conjunction with single beam echo sounder derived bathymetry, provided the initial broadview to map the substrata present throughout the survey area as well as allowing the identification of any features of interest. The aim of the ground-truthing element of the survey was to provide a description of the richness and diversity of the habitats on both rocky reef and the softer sediments. The biotope distribution and species composition was developed through interpretation of dropdown video footage and digital still photography, taken after evaluation of the sidescan mosaic. The results of all elements of the survey were combined with data collected in 2008 to create a Geographical Information System (GIS) which enabled a high level of processing, interpretation and display of the sidescan sonar mosaic, bathymetry, substrata types, biotopes and the digital photography. The 2009 survey work acquired baseline environmental data from the shallow sections (areas inside the 10 m contour). The 2009 field work (acoustic and drop-down camera surveys) was undertaken between 9 and 13 September 2009 with all survey operations conducted from Seastar Survey Ltd.â??s vessel Otarie. The survey mobilisation and de-mobilisation took place in Ardrossan Harbour, Scotland, on 7th September and 14th September respectively. This baseline data stored in Marine Recorder. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Drop-down camera survey - Data handling The photographs and video footage were then used for analysis in the GIS. When the camera surveys were completed the DVDs were retrieved and the backup hard drives were transported to an offsite data storage facility. All DVDs, photographs and logs were checked for errors. DVDs with mpeg video files, sets of all seabed photographs were supplied and the seabed photographs were also incorporated into the ArcView GIS. Video and photographic analysis The analysis of the photographs and video records was carried out â??blindâ??, without any prior knowledge of the sites, using a personal computer and a SONY digital videocassette recorder and a television monitor respectively. The latter system allows slow-motion, freezeframe and standard play analysis. An initial assessment of a site was carried out by first looking through the photographs and film from the particular site quickly to get a brief understanding of the substratum, flora and fauna. Semi-quantitative analysis of the video footage: The video analysis included an initial assessment of a deployment to get a broad understanding of the substratum, flora and fauna as well as the identification of the different biotopes/habitats on the seabed. The boundary positions of the different biotopes/habitats were determined using the time codes and related back to the navigation data. The detailed analysis consisted of a general seabed description and the fauna were identified to the lowest practical level. General descriptions of the faunal life-forms were made and any other features of interest such as trawl marks were also recorded. The abundance data were recorded using the SACFOR scale (general fauna) and actual abundance (commercial taxa) with the analysis concentrating on the commercially important species present together with species readily identified in the video material. A list of the encountered fauna was produced for each site using species reference numbers as cited in the Marine Conservation Society Species Directory (Howson and Picton 1997) to avoid problems in species nomenclature. The sections or deployments were subsequently classified into designated biotopes according to Connor et al. (2004). Faunal densities were calculated based on the distance covered for each habitat, biotope or transect, basing the calculations on the estimated assumption that the camera covers 1 m in width (previous camera calibration test gives a seafloor coverage of approximately 0.8 m by 0.8 m when the camera frame is in contact with the seabed). The distances for each habitat were calculated from the position of the start of each habitat / biotope to the position of the end of each habitat / biotope rather than attempting to calculate the exact distance along the transect resulting in approximate density values. Quantitative analysis of the stills photographs: The still photography analysis was carried out using a personal computer. The methodology is in large parts similar to the video analysis methodology described for the video analysis and included a general seabed description where the substrata were described according to the Wentworth scale (see Leeder, 1982) with boulders and cobbles being described within â??gravelâ?? and rock referring to bedrock. The fauna was identified to the lowest practical level with the nomenclature according to the Marine Conservation Society Species Directory (Howson and Picton 1997) and actual abundance of the fauna and flora was recorded whenever possible (faunal densities are based on the approximation that each photograph covers 1 m2; see camera calibration notes above). The presence of faunal life-forms and any other features of interest such as trawl marks were also recorded. Each photograph was subsequently classified into designated biotopes according to Connor et al. (2004), wherever possible. These results were subsequently incorporated into the ArcView GIS. Data analysis Ecological interpretation of the results was carried out by reference to the JNCC Marine Nature Conservation Review Biotope Classification (Connor et al., 2004), and the presence of rare or unusual species identified against the list in Sanderson (1996). All the identified and enumerated benthic macrofauna were used in the analysis and the abundance data are given in the SACFOR scale (see Connor et al., 2004) for the video records and actual abundance, given as number of individuals/m2, for the still photographs. The data analyses comprised both univariate and multivariate analyses all of which were calculated using Primer (Plymouth Routines in Multivariate Ecological Research) v 5.2.0 (Clarke and Warwick, 1994). The univariate analysis included the total number of individuals (N), total number of species (S), species diversity where the Shannon-Wiener (Hâ??), Pielouâ??s (J) and Margalefâ??s (d) diversity indices (see e.g. Gage and Tyler, 1991; Fowler and Cohen, 1992; Clarke and Warwick, 1994) were used with the natural log (loge) being the chosen parameter in the case of the Shannon-Wiener diversity index. The multivariate analysis was carried out using cluster analysis and ordination (non-metric multi-dimensional scaling, MDS). These data were then transformed to square root to down-weigh the importance of common types of macrofauna in relation to rarer types. The transformed data were then analysed using the Bray-Curtis similarity coefficient (using Primer v.5) followed by a cluster analysis where the sites were group averaged and the resultant dendrogram plotted. Non-metric multi-dimensional scaling (MDS) was then carried out to further assess the presence of any similarities between sites (Clarke and Warwick, 1994). Spearmanâ??s rank correlation coefficient (see e.g. Fowler and Cohen, 1992) was then used to assess any correlations with the particle size analysis variables. The BIOENV routine in PRIMER was used to carry out this task on untransformed abiotic data. The SIMPER routine in PRIMER was subsequently used to assess the difference in characteristic species/ taxa in the samples. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Axelsson, Dewey, Doran, Plastow (2010) Mapping of the marine habitats and species of Lamlash Bay, Arran. Scottish Natural Heritage Commissioned Report No.400 |
| 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 | Habitats and biotopes |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat characterisation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat extent | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Macroalgae and seagrass taxonomy-related counts | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sediment grain size parameters | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos taxonomic abundance | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos taxonomy-related counts | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 55.5762 |
| East | The eastern-most limit of the data resource in decimal degrees | -5.1292 |
| South | The southern-most limit of the data resource in decimal degrees | 55.4995 |
| West | The western-most limit of the data resource in decimal degrees | -5.0503 |
| Regional sea | Irish Sea | |
| 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 | NatureScot (HQ Inverness) | |
| data_supply@nature.scot | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Scottish Natural Heritage (SNH), Headquaters | |
| Individual name | Scottish Natural Heritage (SNH) | |
| Position name | Data Manager | |
| Phone | 01463 725000 | |
| data_supply@nature.scot | ||
| 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 | NatureScot (HQ Inverness) | |
| Position name | NatureScot Data Manager | |
| data_supply@nature.scot | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | SeaStar Survey | |
| Individual name | M. Axelsson | |
| info@seastarsurvey.co.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Data Archive for Seabed Species and Habitats (DASSH) | |
| Individual name | Esther Hughes | |
| Position name | Data Manager | |
| Phone | 01752 633102 | |
| dassh.enquiries@mba.ac.uk | ||
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | This states any limitations on access to the data. Multiple occurences are allowed here. One entry shall be from the INSPIRE Metadata registry and the other free text should be part of the resource `Have specific limitations`. | Not for navigational use; SNH copyright data which is available for re-use under government licence terms: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | 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. | no restrictions to public access |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Database |
| Format in which digital data can be provided for transfer | Documents | |
| Format in which digital data can be provided for transfer | Geographic Information System | |
| 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. | 2010-06-08 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2025-06-10 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |
| Metadata parent | 063b385b-d843-4933-84e2-3e51a4d70d49 | |