© OpenStreetMap contributors
- Add External Layer
- Upload Shapefile
- Close
Use the checkbox () to show or hide a layer.
Use the radio buttons () to select a layer to use with the identify function.
- Layers
- Opacity
Available layers
Search for marine data across UK organisations
- How-To
- About
- Contact MEDIN
- Share
Metadata: 2011 University of Exeter (UoE) Plymouth Sound. Investigation into the cumulative small scale impacts on the Plymouth Sound SAC
Abstract:
In this study, this theory was examined to understand the effects of cumulative disturbances through a field based test. It examined the effects of different disturbances (crab tiling and mooring) together and separately, on the infaunal intertidal communities (Carcinus maenas and meiofauna). The results indicated that mooring appeared to increase overall crab abundance, specifically juveniles and reproductive crabs, whereas tiling showed little difference. The treatments together appeared to create an intermediate abundance of crabs (the control= 90, mooring= 260, tiling= 112 and the cumulative treatment=209). Meiofauna increased in diversity and decreased in evenness for the cumulative treatments. The individual treatments showed that tiling alone could have a positive effect shown by high copepod ratios. Biomass was shown to have no impact. This highlights the complexity of measuring disturbance. These results have shown that disturbances together do not combine to create a larger impact. However, the responses observed may also be influenced by season and other site specific factors such as history of previous disturbance. The results do not conform to the linear interpretation of the Intermediate Disturbance Hypothesis if the assumption is more disturbances creates more impact, as more disturbances did not result in a bigger impact. This highlights the difficulty to classify an optimum disturbance regime to help future conservation objectives.
Data holder:
Natural England
Use constraints:
Accessible under Open Government Licence https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/
Other details | ||
Internal code | Internally assigned metadata identifier | 4904 |
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. | 2011 University of Exeter (UoE) Plymouth Sound. Investigation into the cumulative small scale impacts on the Plymouth Sound SAC |
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. | bc31d375b970fa882c38e6672d856af0 |
Resource Identifier | This is the code assigned by the data owner. | NATENG000289 |
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 | 2011-05-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2011-07-31 |
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. | In this study, this theory was examined to understand the effects of cumulative disturbances through a field based test. It examined the effects of different disturbances (crab tiling and mooring) together and separately, on the infaunal intertidal communities (Carcinus maenas and meiofauna). The results indicated that mooring appeared to increase overall crab abundance, specifically juveniles and reproductive crabs, whereas tiling showed little difference. The treatments together appeared to create an intermediate abundance of crabs (the control= 90, mooring= 260, tiling= 112 and the cumulative treatment=209). Meiofauna increased in diversity and decreased in evenness for the cumulative treatments. The individual treatments showed that tiling alone could have a positive effect shown by high copepod ratios. Biomass was shown to have no impact. This highlights the complexity of measuring disturbance. These results have shown that disturbances together do not combine to create a larger impact. However, the responses observed may also be influenced by season and other site specific factors such as history of previous disturbance. The results do not conform to the linear interpretation of the Intermediate Disturbance Hypothesis if the assumption is more disturbances creates more impact, as more disturbances did not result in a bigger impact. This highlights the difficulty to classify an optimum disturbance regime to help future conservation objectives. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Plymouth Sound is situated 50.343 degrees N, 4.143 degrees W in the Western English Channel off the coast of Devon. Three rivers were included in the sampled areas; the Tamar (50o 21, 30 N, 10o00 W), Lynher (50o 379 N, 42o64W) and the Tavy (50o 28 N, 40o 09 W). The other rivers that lie within the Plymouth Sound are not currently included within the designations of the SAC and therefore were not incorporated. The treatments included â??mooringâ??, â??crab tilingâ??, â??mooring and crab tilingâ?? and a â??controlâ??. All of the 24 sites had six replicates, and were randomly selected to avoid bias. Data was collected at during the months of May â?? July 2011. Joint Nature Conservation Committee (JNCC) area summary data was mapped onto Arc Geographical Information System (GIS) software, so that the same habitat type could be selected minimising the effects of different habitats. Digimap OS map layers of the area were also included; shape files contributed from the Plymouth City Council included areas of moorings and crab tiles. Sites could then be randomly selected using a tool in Arc GIS. |
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 | Geology | |
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 | Zoobenthos taxonomic abundance | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sediment grain size parameters | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 50.3971 |
East | The eastern-most limit of the data resource in decimal degrees | -4.0608 |
South | The southern-most limit of the data resource in decimal degrees | 50.2964 |
West | The western-most limit of the data resource in decimal degrees | -4.227 |
Regional sea | Western Channel and Celtic Sea | |
29E5 | ||
English Channel | ||
infralittoral | ||
soil and sediment boundary layer | ||
VIIe | ||
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 | 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 | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
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 | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
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 | |
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 | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | http://www.naturalengland.org.uk |
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. | Accessible under Open Government Licence https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ |
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. | Accessible under Open Government Licence https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ |
Available data formats | ||
Data format | Format in which digital data can be provided for transfer | Delimited |
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. | 2017-04-18 |
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. | 2017-04-18 |
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 |