Collection Details

Elephant Seal Sightings, Macquarie Island

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Collection Details

Custodian
Harry Burton
Collection Acronym
Ellie-Macca
Description
At Macquarie Island 1000 seals were weighed per annum between 1993-2003 at birth and individually marked with two plastic flipper tags in the inter-digital webbing of their hind flippers. These tagged seals were weighed again at weaning, when length, girth, fat depth, and flipper measurements were made. Three weeks after weaning 2000 seals were permanently and individually marked by hot-iron branding. Recaptures and re-weigings of these known aged individuals were used to calculate growth and age-specific survival of the seals. Similar data were collected from elephant seals between 1950 and 1965 when seals were individually marked by hot-iron branding. Mark-recapture data from these cohorts were used to assess the demography of the declining population. Length and mass data were also collected for these cohorts and were used, for the first time, to assess the growth of individual seals without killing them.
Domain
Marine
Taxa Groups
Seals,

List 1 taxa from this collection
Collection Status
Data collection ongoing
Acknowledgements
Contact Harry Burton for details.
DiGIR Details

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Resource Code: - ellie_sightings_macca
Resource Name: - Elephant Seal Sightings, Macquarie Island
Keywords: - elephant seals, tagging, length estimates, resights
Basis of Record: - Observation

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Linked to the following Bioregions

Subantarctic Island - Macquarie Island

Data Details

Data links
Search the 221,572 observations belonging to this collection.
Map

Polar projection map of the collection. (view full size) No map exists.
Spatial Coverage
54° 00' 00.0" S to 54° 46' 29.6" S | -54.0000° to -54.7749°
158° 00' 00.0" E to 158° 56' 44.2" E | 158.0000° to 158.9456°
Date Range of Collection
13-Apr-1952 to 6-Nov-2007
Metadata
AADC-00101 - Macquarie Island Elephant Seal Populations 1950 to 1965
AADC-00102 - Macquarie Island Elephant Seal Populations 1985 Onwards
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