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Metadata: 2007, Ecofys, Lincs Offshore Wind Farm, Collision Risk Modelling for Pink Footed Geese in the Greater Wash
Abstract:
This series focuses on the methods used and results generated by collision risk modelling for pink-footed geese in the greater Wash. It is possible to estimate mortality rates of birds passing through a wind farm given key parameters of the placement, dimension and operation of the wind turbines and the movements, abundance and behaviour of the birds. This has lead to the development of collision risk models. For an offshore site, the data to estimate the abundance (and movements) of the birds should preferably come from boat-based surveys. In the boat-based surveys ‘snapshots’ are used to quantitatively assess flying birds. Snapshots are predefined moments during the survey at which all flying birds within a certain distance from the surveyor are recorded. From the snapshot data one can calculate the density of birds in flight (e.g. number of flying birds per square km). However, with Pink-footed geese (PG) there is a (potential) problem with this methodology. This is due to the fact that very few PG have been recorded in snapshots. In the 19 boat-based surveys for the offshore wind farms Lynn and Inner Dowsing (LID), only 5 PG were recorded in snapshots during a single survey in November 2003. Similar results were found in the boat-based surveys for the Lincs offshore wind farm: 54 PG in a single survey in September 2004, out of 33 boat-based surveys. During the boat-based surveys for Docking Shoal OWF not a single PG was recorded in snapshots in any of the 39 surveys. The statistical validity of collision risk modelling based on the incidental records of Pink-footed geese in or near LID or Lincs is therefore questionable at best. There is an alternative approach. The Pink-footed geese pass through the Greater Wash during the migration to and from their overwintering ground in Norfolk. A reasonable estimate of the annual passage rate of PG through a wind farm site can be made on the basis of the maximum number of PG recorded overwintering in Norfolk, and some reasonable assumptions on the flight corridor along the Lincolnshire Coast. The maximum number of PG yet recorded in Norfolk is 152,514 ind. (recorded on 13th December 2004 - Norfolk and Norwich Naturalists’ Society 2005). In this report the results from both approaches are presented. It was found that compared to the mortality rates calculated based on the site specific boat-based surveys, the calculated total mortality rate based on the maximum regional population is about a factor of two higher.
Data holder:
Centrica Renewable Energy Limited
| Other details | ||
| Internal code | Internally assigned metadata identifier | 5209 |
| 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, Ecofys, Lincs Offshore Wind Farm, Collision Risk Modelling for Pink Footed Geese in the Greater Wash |
| 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. | ab7ededb4103504c864ddc99e124934e |
| Resource Identifier | This is the code assigned by the data owner. | 3172 |
| 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 | 2007-08-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2007-08-01 |
| 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. | This series focuses on the methods used and results generated by collision risk modelling for pink-footed geese in the greater Wash. It is possible to estimate mortality rates of birds passing through a wind farm given key parameters of the placement, dimension and operation of the wind turbines and the movements, abundance and behaviour of the birds. This has lead to the development of collision risk models. For an offshore site, the data to estimate the abundance (and movements) of the birds should preferably come from boat-based surveys. In the boat-based surveys ‘snapshots’ are used to quantitatively assess flying birds. Snapshots are predefined moments during the survey at which all flying birds within a certain distance from the surveyor are recorded. From the snapshot data one can calculate the density of birds in flight (e.g. number of flying birds per square km). However, with Pink-footed geese (PG) there is a (potential) problem with this methodology. This is due to the fact that very few PG have been recorded in snapshots. In the 19 boat-based surveys for the offshore wind farms Lynn and Inner Dowsing (LID), only 5 PG were recorded in snapshots during a single survey in November 2003. Similar results were found in the boat-based surveys for the Lincs offshore wind farm: 54 PG in a single survey in September 2004, out of 33 boat-based surveys. During the boat-based surveys for Docking Shoal OWF not a single PG was recorded in snapshots in any of the 39 surveys. The statistical validity of collision risk modelling based on the incidental records of Pink-footed geese in or near LID or Lincs is therefore questionable at best. There is an alternative approach. The Pink-footed geese pass through the Greater Wash during the migration to and from their overwintering ground in Norfolk. A reasonable estimate of the annual passage rate of PG through a wind farm site can be made on the basis of the maximum number of PG recorded overwintering in Norfolk, and some reasonable assumptions on the flight corridor along the Lincolnshire Coast. The maximum number of PG yet recorded in Norfolk is 152,514 ind. (recorded on 13th December 2004 - Norfolk and Norwich Naturalists’ Society 2005). In this report the results from both approaches are presented. It was found that compared to the mortality rates calculated based on the site specific boat-based surveys, the calculated total mortality rate based on the maximum regional population is about a factor of two higher. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The collision risk model used in this assessment is the model developed by Scottish National Heritage and British Wind Energy Association (Percival et al. 1999, Band 2000), taking into account the appraisal of this model by the British Trust for Ornithology (Chamberlain et al. 2005). |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Origin: ECON |
| 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 | Consenting | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Agreement for Lease Area | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bird counts | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.271317239598 |
| East | The eastern-most limit of the data resource in decimal degrees | 0.52389494189844 |
| South | The southern-most limit of the data resource in decimal degrees | 53.164480450937 |
| West | The western-most limit of the data resource in decimal degrees | 0.44765720155553 |
| 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 | Centrica Renewable Energy Limited | |
| Position name | GIS and Data Manager | |
| Phone | 01753 492188 | |
| Delivery point | Millstream East 1st Floor, Maidenhead Road | |
| Postal code | SL4 5GD | |
| City | Windsor | |
| Administrative area | Berkshire | |
| Country | United Kingdom | |
| renewables@centrica.com | ||
| URL | www.centrica.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 | Centrica Renewable Energy Limited | |
| Position name | GIS and Data Manager | |
| Phone | 01753 492188 | |
| Delivery point | Millstream East 1st Floor, Maidenhead Road | |
| Postal code | SL4 5GD | |
| City | Windsor | |
| Administrative area | Berkshire | |
| Country | United Kingdom | |
| renewables@centrica.com | ||
| URL | www.centrica.com | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Ecofys Netherlands B.V. | |
| Phone | +31 (0)30 662 3300 | |
| Delivery point | Kanaalweg 15-G,, P.O. Box 8408 | |
| Postal code | 3503 RK | |
| City | Utrecht | |
| Country | Netherlands | |
| info@ecofys.com | ||
| URL | http://www.ecofys.com/en/ | |
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/885/summary |
| Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk | |
| Dataset constraints | ||
| 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. | no conditions apply |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | |
| 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. | 2007-08-01 |
| Date of creation | The date that the resource was created. | 2007-08-01 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2009-04-27 |
| 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 | Version 2.3.5 |