40fb29e4-f856-4e6d-9f34-fd9e0c99e56e English series series 2026-09-01T10:06:11 MEDIN 3.1.2 biota oceans Bird counts SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Bird behaviour SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Cetacean abundance SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Construction monitoring The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Pre-Construction monitoring The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Renewable Energy 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 English Channel SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision troposphere 2010-11-23T00:00:00 2012-02-08T23:59:59 1.34879217206949 1.6758136933659 51.5650393531118 51.7655320971418 TCE-977 Marine Data Exchange 2010 - 2012, APEM, London Array, Aerial Ornithology Winter Survey Aerial Ornithology Survey 2010-01-01T00:00:00 creation 2021-05-17T13:48:44 publication English This project summarises the findings of the winter 2010 / 11 and 2011 / 12 aerial surveys of the London Array Ltd Offshore Wind Farm (OWF) site, and associated control zone, for birds and marine mammals. The study assessed abundance, distribution, and seasonal variations of seabirds including red-throated divers, gulls, auks, and other species, as well as marine mammals, across Zones 1 and 2. Key findings revealed significant year-to-year fluctuations, with a decline in diver and gull numbers in 2011/12 and shifts in peak counts for other seabird and marine mammal taxa, strongly influenced by tidal state, habitat features, and environmental factors. Diver populations were concentrated in shallow waters and exceeded regional expectations, underscoring the area’s importance for conservation. Results informed Marine Licence requirements and potential designation of the Outer Thames Estuary as a Special Protection Area. The study concluded that ongoing, targeted monitoring is essential for assessing environmental and construction impacts, supporting adaptive management, and guiding mitigation strategies. 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 APEM Limited enquiries@apemltd.co.uk 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-977/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 aerial surveys are designed to meet the requirements of the Marine Licence1 granted in respect of the wind farm; in order to satisfy these requirements both pre and during construction monitoring for Phases 1 and 2 is required, necessitating aerial surveys of the London Array OWF site and a control zone. The study used high-definition digital aerial photography and systematic grid methodology, supplemented by statistical modeling and GIS mapping. The Crown Estate enquiries@thecrownestate.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84