43b8eb54-141f-4671-9466-132e14c31931 English series series 2026-08-13T10:29:21 MEDIN 3.1.2 biota Bird counts SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Consenting The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Agreement for Lease Area The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaDataNet sea areas 2012-11-07 revision Irish Sea and St. George's Channel SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision troposphere 2001-11-01T00:00:00 2002-03-01T23:59:59 -3.48021866047141 -3.41364681654179 53.4030226951271 53.4310568920665 TCE-1698 Marine Data Exchange 2003, Highland Statistics, North Hoyle, Power Analysis of Sea Bird Data Power Analysis of Sea Bird Data 2023-10-02T16:09:34 publication English Highland Statistics Ltd. conducted a power analysis in 2003 on sea bird data collected near the North Hoyle wind farm to assess the effectiveness of the survey design in detecting population changes in selected species before and after wind farm construction. The study used bird counts and presence-absence data from nine observation sessions in late 2001 and early 2002, analyzing sightings by spatial distance bands with georeferenced records and employing statistical power analysis as outlined by Zar (1999) and comparative methodological tables. The analysis showed that only for cormorant, guillemot, kittiwake, and shag species—where observed means exceeded the effect size—could significant reductions be reliably detected with the available sample size and typical statistical thresholds, while most other species’ data lacked adequate power to reveal plausible effects. The study recommends substantially increased survey effort or alternative designs to improve detectability for less abundant species and emphasizes focusing monitoring on species and metrics where sufficient power can be achieved. Origin: Project Management Support Services (PMSS) 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 Highland Statistics Ltd 00441358789293 UNKNOWN originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor RWE support@rwe.com owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-1698/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 The North Hoyle Offshore Windfarm is the first of the UK's Round 1 wind farms. Due to the wind farm pre-dating the data clauses which The Crown Estate insert into all offshore windfarm leases, the offshore wind farm developer had no obligation to provide survey data to The Crown Estate. However, despite this, The Crown Estate are pleased to have worked with Innogy and Greencoat Capital to retrieve as much of the historical data as possible. All of the retrievable data can now be found on the MDE. Full methodology details can be found in Section3. ABPmer +44 (0)23 8071 1840 enquiries@abpmer.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84