cc712cc0cc0d4a909c84652c1d0dfc34 eng series The Crown Estate Marine Data Advisor +44 020 7851 5000 The Crown Estate 1 St James's Market London SW1Y4AH mde@thecrownestate.co.uk https://www.marinedataexchange.co.uk/ pointOfContact 2022-06-20 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::23031 2011-2012, APEM Ltd., London Array, Aerial Bird Surveys 2012-06-29 publication 2009-02-09 creation 2012-06-29 revision MDE-77-3611 This report summarises the findings of the winter 2011 / 12 during construction aerial surveys of the London Array Ltd. Offshore Wind Farm (OWF) site, and associated control Zones, for birds and marine mammals. Construction of the Phase 1 area of the London Array Ltd. OWF commenced in March 2011 and is due to be completed by the end of 2012. The aerial surveys are designed to meet the requirements of the Marine Licence1 granted in respect of the wind farm, and to satisfy the wider Ornithological Review Panel (ORP) process. The ORP was set up prior to award of consent as an expert panel comprising representatives from London Array, Natural England and Royal Society for Protection of Birds (RSPB) to discuss and agree the scope of the ornithological monitoring required under the phased approach in the London Array Marine Licence, and to agree an interaction figure that would not have an adverse effect on integrity of the likely Greater Thames Estuary Special Protection Area (SPA). In order to satisfy Marine Licence conditions, during construction monitoring for Phase 1 development and pre-construction monitoring of Phase 2 is required, necessitating aerial survey of the London Array OWF site and a control Zone. Aerial surveys designed to fulfil the ORP process cover further control Zones. APEM Ltd. A17 Embankment, Business Park, Heaton Mersey Manchester SK4 3GN enquiries@apemltd.co.uk https://www.apemltd.com/ originator The Crown Estate +44 020 7851 5000 The Crown Estate 1 St James's Market London SW1Y4AH mde@thecrownestate.co.uk https://www.marinedataexchange.co.uk/ custodian The Crown Estate The Crown Estate 1 St James's Market London SW1Y 4AH mde@thecrownestate.co.uk https://www.marinedataexchange.co.uk/ distributor notPlanned Documents Marine Environmental Data and Information Network Species distribution GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Bird taxonomy-related abundance per unit area of surface Bird counts Cetacean abundance Bird behaviour SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision otherRestrictions Publically Available https://www.marinedataexchange.co.uk/content/info/faq 1 eng biota International Hydrographic Bureau, Limits of Oceans and Seas 1954-01-01 creation North Sea SeaDataNet vertical extent keywords 2010-01-01 revision atmosphere 0.9161 1.7610 51.3877 52.0291 2011-11-02 2012-02-09 https://www.marinedataexchange.co.uk/details/3611/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. series High definition digital aerial surveys were conducted during the winter period between November 2011 and February 2012. Four surveys of six survey Zones were completed in total, with one survey conducted each month. Each survey was flown on a 500 m grid at a 3 cm Ground Sampling Distance (GSD) resolution to ensure comparability with the 2010 / 11 pre-construction surveys (for detailed rationale, see APEM (2010)). The primary aim of APEM’s grid survey methodology is to derive sufficient independent estimates of bird density (and distribution) to target a predefined level of precision around population estimates. The coarseness (spacing) of the grid (an image is collected at each grid internode) is determined by the predicted number of samples required to achieve the predefined level of confidence. Aerial surveys were undertaken using either a Vulcanair P68 Observer twin engine survey aircraft or a Britten-Norman Islander survey aircraft.