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New Zealand sea lion movement and dive data - Campbell Island/Motu Ihupuku

Created 13/03/2025

Updated 13/03/2025

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We hypothesised that New Zealand sea lions from Campbell Island/Motu Ihupuku of various sex and age classes would utilise the water column differently due to differing physiological constraints and therefore have different accessibility to prey resources. We tested whether sea lion diving behaviour varied in relation to (i) age and sex class, (ii) time of day and (iii) water depth. We also hypothesized that the proportion of benthic/pelagic diving, and consequently risk of fisheries interaction, would vary in relation to age and sex. Satellite telemetry tags were deployed on 25 NZSL from a range of age/sex classes recording dive depth, duration and location. Adult females and juveniles used inshore, benthic habitats, while sub-adult males also utilised benthic habitats, they predominantly used pelagic habitat at greater distances from the island. Adult females and juveniles exhibited shorter dives than the same age/sex classes at the Auckland Islands, suggesting a lower dive effort for these age/sex classes at Campbell Island.

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Title New Zealand sea lion movement and dive data - Campbell Island/Motu Ihupuku
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/ebc854ea-c28b-4555-bd7c-8ef4518c7f84
Contact Point
CSIRO Oceans & Atmosphere
maryanne.lea@utas.edu.au
Reference Period 02/02/2012 - 25/02/2015
Geospatial Coverage
Map data © OpenStreetMap contributors
Data Portal Data.gov.au