09ef22f7-e029-42bf-acf2-a85db3cea37e English series series 2026-07-15T11:42:41 MEDIN 3.1.2 biota Bird counts SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Bird behaviour SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Bird taxonomy-related abundance per unit area of surface SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Research The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Research and Development Activity The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision troposphere 1988-01-01T00:00:00 2006-12-31T00:00:00 -4.76 2.22 51.38 54.3 TCE-260 Marine Data Exchange 2007, BTO, COWRIE Research, Further use of aerial surveys to detect bird displacement by offshore wind farms Further use of aerial surveys to detect bird displacement by offshore wind farms 2007-01-01T00:00:00 creation 2021-05-17T13:33:53 publication English 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. Origin: BTO and DHI There will be no limitations when published on the Marine Data Exchange otherRestrictions 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 otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian Ilya M.D Maclean and Mark M. Rehfisch Bannister British Trust for Ornithology +44 (0)1842 750050 ilya.maclean@bto.org originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor COWRIE cowrie@offshorewind.co.uk owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-260/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08T00:00:00 publication Conformity with the Commission Regulation (EU) No 1089/2010 was either not relevant to this dataset or not a requirement of the Marine Data Exchange for the creation and submission of this dataset; therefore, conformity has not been assessed and cannot be declared False series 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. BTO Ilya M.D Maclean and Mark M. Rehfisch 01684 894 000 djbannister@qinetiq.com pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84