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Metadata: 2007, COWRIE, Potential use of population viability analysis to assess the impact of offshore windfarms on bird populations
Abstract:
Although conventional impact assessments allow estimates of the number of birds that might collide with or be displaced by windfarms, such methods do not allow the overall effect on bird populations to be established. This report determines whether sufficient demographic information is available to carry out population viability analysis: one method of determining the impacts of offshore windfarms on bird populations. For most species likely to be affected by offshore windfarms, sufficient demographic data exist to carry out population viability analyses. There is good information on adult survival for all species with the exception of little tern and little gull. Similarly, for all species except little gull, there is good information on productivity. Reasonable data on age-dependent survival and productivity and on the proportion of non-breeders and intercolony movements are available for about half of the species assessed.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 5488 |
| 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, COWRIE, Potential use of population viability analysis to assess the impact of offshore windfarms on bird populations |
| 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. | d5c5774c6e48509b84bb0389a2dc882e |
| Resource Identifier | This is the code assigned by the data owner. | 3207 |
| 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 | 2026-04-17 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2026-04-17 |
| 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. | Although conventional impact assessments allow estimates of the number of birds that might collide with or be displaced by windfarms, such methods do not allow the overall effect on bird populations to be established. This report determines whether sufficient demographic information is available to carry out population viability analysis: one method of determining the impacts of offshore windfarms on bird populations. For most species likely to be affected by offshore windfarms, sufficient demographic data exist to carry out population viability analyses. There is good information on adult survival for all species with the exception of little tern and little gull. Similarly, for all species except little gull, there is good information on productivity. Reasonable data on age-dependent survival and productivity and on the proportion of non-breeders and intercolony movements are available for about half of the species assessed. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Population viability analysis (PVA) is a species-specific process used to identifying the process that determines the probability that a population will go extinct within a given number of years (Shaffer, 1983; 1987; Boyce 1992) and is thus used to identify the most important threats facing a particular species population. It differs from conventional population modelling in that it takes into account stochastic events, i.e. random changes in demographic rates such as survival or productivity. As such, it is the variability in demographic parameters that is as important as mean values and the greater the variability, the more prone a population is to extinction all other things being equal. Population viability analysis is often oriented towards the conservation and management of rare and threatened species, with the goal of applying the principles of population ecology to improve their chances of survival. Threatened species management has two broad objectives. The short-term objective is to minimize the risk of extinction. The longer-term objective is to promote conditions in which species retain their potential for evolutionary change without intensive management. PVAs are often used to reveal the sensitivity of populations to particular demographic parameters so that the most important impacts on extinction probabilities can be determined. Extrinsic forces, such as habitat loss, over-harvesting, and competition or predation by introduced species, often lead to population decline. Although the traditional methods of wildlife ecology can reveal such deterministic trends, random fluctuations that increase as populations become smaller can lead to extinction even of populations that have, on average, positive population growth when below carrying capacity and mechanisms that incorporate intrinsic factors are needed if extinction risks are to be determined (Lacy 1993). |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Origin: Centre for Ecology and Hydrology and BTO |
| 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 | 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 | Bird counts | |
| 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 | Bird behaviour | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 60.767202863875 |
| East | The eastern-most limit of the data resource in decimal degrees | 2.68743327034 |
| South | The southern-most limit of the data resource in decimal degrees | 49.039998103786 |
| West | The western-most limit of the data resource in decimal degrees | -9.3331285579078 |
| 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 | |
| Delivery point | British Trust for Ornithology, The Nunnery, Thetford IP24 2PU | |
| 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 | |
| Delivery point | 16 New Burlington Place | |
| Postal code | W1S 2HX | |
| City | London | |
| Country | United Kingdom | |
| enquiries@thecrownestate.co.uk | ||
| URL | http://www.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, Morten Frederiksen | |
| Phone | +44 (0)1842 750050 | |
| Fax | +44 (0)1842 750030 | |
| Delivery point | The Nunnery, Thetford, | |
| ilya.maclean@bto.org | ||
| URL | bto.org | |
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/259/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. | 2007-09-01 |
| 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. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2009-05-06 |
| 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 |