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Metadata: 2007, BTO, COWRIE Research, Further use of aerial surveys to detect bird displacement by offshore wind farms
Abstract:
The series was designed to assess the statistical power of detecting population declines in individual species counts linked to wind farm construction. Employing a methodology based on Generalized Linear Modelling (GLM) and randomization, the study used real count data from random sites by species, year, and month, generating hypothetical scenarios with a model-derived mean-to-variance ratio (P-scale factor). Through 1,000 randomization iterations and comparison of pre- and post-construction counts, the analysis determined the proportion of significant results using P value thresholds. The findings demonstrate that this approach provides robust estimation of statistical power for detecting site-level population declines, and it is recommended for use in similar ecological impact assessments involving temporal and spatial data.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 18269 |
| 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. | 2007, BTO, COWRIE Research, Further use of aerial surveys to detect bird displacement by offshore wind farms |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Further use of aerial surveys to detect bird displacement by offshore wind farms |
| 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. | 09ef22f7-e029-42bf-acf2-a85db3cea37e |
| Resource Identifier | This is the code assigned by the data owner. | TCE-260 |
| 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. | series |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 1988-01-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2006-12-31 |
| 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. | The series was designed to assess the statistical power of detecting population declines in individual species counts linked to wind farm construction. Employing a methodology based on Generalized Linear Modelling (GLM) and randomization, the study used real count data from random sites by species, year, and month, generating hypothetical scenarios with a model-derived mean-to-variance ratio (P-scale factor). Through 1,000 randomization iterations and comparison of pre- and post-construction counts, the analysis determined the proportion of significant results using P value thresholds. The findings demonstrate that this approach provides robust estimation of statistical power for detecting site-level population declines, and it is recommended for use in similar ecological impact assessments involving temporal and spatial data. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | We selected four taxa for analysis: red-throated diver, common scoter, black-backed gulls and sandwich tern. As the majority of the divers are unidentifeid to species level during aerial surveys we added a proportion of positively identified red-throated diver relative to the other identified diver species. The vast majority of scoter species were recorded as common scoter, presumably because although this spcies can be difficult to distinguish from other scoter species from the air, the areas surveyed are known to contain only small numbers of velvet scoter (Melanitta fusca). Thus addition unidentified scoters were not added to common scoter count, although in relality the numbers of these are such that doing so would not have made any appreciable difference. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Origin: BTO and DHI |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bird counts |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bird behaviour | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bird taxonomy-related abundance per unit area of surface | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Research | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Research and Development Activity | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 54.3 |
| East | The eastern-most limit of the data resource in decimal degrees | 2.22 |
| South | The southern-most limit of the data resource in decimal degrees | 51.38 |
| West | The western-most limit of the data resource in decimal degrees | -4.76 |
| 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 | BTO | |
| Position name | Ilya M.D Maclean and Mark M. Rehfisch | |
| Phone | 01684 894 000 | |
| djbannister@qinetiq.com | ||
| 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 | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | British Trust for Ornithology | |
| Individual name | Ilya M.D Maclean and Mark M. Rehfisch Bannister | |
| Phone | +44 (0)1842 750050 | |
| ilya.maclean@bto.org | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | COWRIE | |
| cowrie@offshorewind.co.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-260/summary |
| Web address (URL) that links to the resource | https://www.marinedataexchange.co.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 | There will be no limitations when published on the Marine Data Exchange | |
| 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. | Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use |
| 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. | 2021-05-17 |
| Date of creation | The date that the resource was created. | 2007-01-01 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-09-27 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-07-15 |
| 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 |