Aerial surveying of grey seal breeding colonies on the Blasket Islands, Co. Kerry, the Inishkea Group, Co. Mayo and the Donegal Coast, Ireland

The status of Ireland's grey seal population and its relationship with that of Britain and Western Europe, are poorly understood. The existing population estimate for grey seals in Ireland is outdated and urgency exists to establish a reliable national population estimate for this species, list...

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Bibliographic Details
Published inJournal for nature conservation Vol. 15; no. 2; pp. 73 - 83
Main Authors Cronin, Michelle A., Duck, Callan D., Ó Cadhla, Oliver
Format Journal Article
LanguageEnglish
Published Elsevier GmbH 13.07.2007
Subjects
Census
Digital imagery
Halichoerus grypus
Photography
Population estimate
Pup production
Photography
Digital imagery
Census
Pup production
Population estimate
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Summary:The status of Ireland's grey seal population and its relationship with that of Britain and Western Europe, are poorly understood. The existing population estimate for grey seals in Ireland is outdated and urgency exists to establish a reliable national population estimate for this species, listed as an Annex II species under the EU Habitats Directive. Prior to the initiation of a survey on a national scale, the success or otherwise of aerial techniques in surveying grey seal breeding habitat on the Irish coastline first needs to be established. Previously, surveys were boat-based and were susceptible to adverse weather conditions frequently encountered during the autumn breeding season. The feasibility of using aerial techniques to survey grey seal breeding colonies in Ireland was tested during the breeding season of 2003.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1617-1381
1618-1093
DOI:10.1016/j.jnc.2006.11.001