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      4. WAMSI 2 - Kimberley Node - 1.2.4 - Relative abundance, population genetic structure and acoustic monitoring of Australian snubfin and humpback dolphins in regions within the Kimberley

      WAMSI 2 - Kimberley Node - 1.2.4 - Relative abundance, population genetic structure and acoustic monitoring of Australian snubfin and humpback dolphins in regions within the Kimberley

      This WAMSI 2 project complements wider research programs which aim to increase our understanding of the distribution, abundance and population connectivity of Australian snubfin (Orcaella heinsohni) and humpback (Sousa sahulenis) dolphins, including the development of new research and monitoring methods.

      In this project, we: (i) collected genetic samples from snubfin and humpback dolphins at selected locations in the Kimberley and assessed the connectivity between these and previously sampled populations elsewhere in north-western Australian waters; (ii) collected boat-based sightings and photo-identification data to assess the relative abundance of snubfin and humpback dolphins at selected locations in the Kimberley region; and, (iii) investigated the application of passive acoustic monitoring (PAM) as an effective technique for monitoring these species, including: characterisation of the underwater soundscape of two Kimberley locations; and, the collection of data on the acoustic repertoire and vocalisation rates of snubfin and humpback dolphins. Our results provide managers and policy-makers with valuable data on the relative importance of several sites within the Kimberley region to snubfin and humpback dolphins, along with an improved understanding of the connectivity of populations and the appropriate geographic scales at which to manage them. We have shown that PAM provides a method of effectively detecting snubfin and humpback dolphins in high-use areas, and have increased the information base from which to further develop PAM towards more quantitative and species-specific monitoring of these dolphins.

      Our collaborative approach included training and participation by Yawuru, Bardi-Jawi, Dambimangari and Balanggarra Traditional Owners, and a Marine Park Joint Management team. This has resulted in an improved understanding and capacity of relevant local land and sea managers to collect data on these poorly-understood species within remote areas, and laid the foundation for ongoing research in the Kimberley region.

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      Activity Stream RDF JSON
      western-australian-marine-science-institution
      Key Information
      Published by
      Western Australian Marine Science Institution
      Information classification
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      Data theme
      Science
      Data last updated
      12-12-2017
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      Data custodian
      Bejder, Lars, Dr
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      Maintainer Not Specified
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      First published
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      Metadata last updated
      25-05-2022
      Data source
      http://catalogue.aodn.org.au/geonetwork/srv/eng/metadata.show?uuid=665ca349-9270-44d5-8835-cc72917a2392
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      Acknowledgement

      The Government of Western Australia respectfully acknowledges the traditional owners of country throughout Western Australia and pays its respects to Elders past, present and emerging.

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