871f3c6b-e4f0-4e9d-8ded-77b10af54d80 English series series 2026-09-10T12:18:06 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 Pre-Construction monitoring The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Offshore area of search The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Atmospheric conditions GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaDataNet sea areas 2012-11-07 revision North Sea SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision atmosphere 2007-11-15T00:00:00 2008-03-30T00:00:00 0.339 0.918 52.96 53.38 TCE-944 Marine Data Exchange 2007-2008, WWT Consulting, Lincs, Aerial Ornithology Survey Aerial Ornithology Survey 2021-05-17T13:47:53 publication English Data on the numbers and distribution of waterbirds and seabirds in UK inshore waters are required for a variety of purposes, including for monitoring waterbird numbers and distribution and identification of Special Protection Areas (SPAs). It is also required for Environmental Statements for Round 1 Offshore Wind Farm (OWF) proposals and Strategic Environmental Assessments for Round 2 OWF development. The objective of this project was to undertake four aerial surveys of waterbirds and seabirds in inshore waters in an area of the Outer Wash approximately bounded to the west by Skegness, to the north by Mablethorpe, to the east by Wells-Next-the-Sea and to the south by the Norfolk coastline. This area was included in an aerial survey flying block identified as ‘GW4’. The first survey was to take place in November 2007, the second in December 2007, the third in February 2008 and the fourth in March 2008. 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 WWT Consulting info@wwtconsulting.co.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Orsted info@orsted.com owner notPlanned Documents Geographic Information System https://www.marinedataexchange.co.uk/details/TCE-944/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 were undertaken using a methodology developed in Denmark by the National Environment Research Institute (NERI) (Kahlert et al 2000; see also Camphuysen et al 2004). This method involved a ‘distance sampling’ approach (see Buckland et al 2001), whereby the distance from the observer to each bird/flock of birds was recorded. As birds further from the observer are more difficult to detect than closer birds, recording of distance allows the number of missed birds to be estimated. This approach allows statistical analyses of the data (e.g. confidence limits to be calculated for estimates of numbers) that are not possible with data collected using previous aerial survey methods. Further, using a combination of the time at which birds were encountered and the track flown by the plane (recorded using a Global Positioning System (GPS)), the locations of observed birds can be calculated with considerable accuracy (in most cases, to within a few hundred metres). A Partenavia PN68 aircraft was used for the survey, flying at an altitude of 76 m and at a speed of approximately 200 km h-1. The location of the plane was recorded every five seconds using a GPS. A series of transects spaced 2 km apart had been designed in a flying block to cover nearshore waters in the required area. The transects were aligned north-south along grid lines of the Ordnance Survey of Great Britain to reduce the effect of glare during the survey and aid the detectability and identification of birds. This flying block, identified as “GW4”, was surveyed first in the winter of 2004/05, then subsequently in summer 2005, winter 2005/06 and summer 2006. The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84