Waikato Coastal Database
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North Island Hector's (Maui) dolphin distribution – West Coast

1. Identification information

Status
Complete
Data Collection Date
1998
Summary
Purpose: The North Island Maui’s dolphin, is estimated to have a population of around 111 individuals and is ranked as nationally critical by DOC and critically endangered by the IUCN. While there is uncertainty over trends in population size the South Island and West Coast North Island there is some evidence of overall population decline at a species level as well as within individual populations. The aim of this work is to estimate the number of North Island Hector's dolphins.
Content
coastal small boat survey, review of past literature.
Study Types
  • Inventory/Survey
Categories
  • Marine Mammals

2. Contact information

Commissioning Agencies
  • University of Otago
  • University of Auckland
Contact Organisations
  • University of Auckland

3. Spatial information

Geographic Coverage
West Coast of the North Island
Grid Coordinates
Locations
  • Name
    West Coast
    NZMG Easting
    2643002
    NZMG Northing
    6355382
    Location
    West Coast

4. Data acquisition information

Collection Date
1998?
Methodology
Frequency of collection: One off survey. Other similar surveys subsequently undertaken by the Department of Conservation.

5. Data quality information

Known Limitations

6. Distribution information

Format
report Digital Format: MS Word
Applications
Assists in identifying population range, population structure
Availability
? Sensitivity/Confidentiality: ?

7. Status information

Data Status

8. Metadata information

General Notes
Related Links
Publications
  • Russell, K.G., 1999: The North Island Hector's dolphin: a species in need of conservation. Unpublished MSc thesis, University of Auckland.
  • Ferreira, S.M. & Roberts, C.C. 2003. Distribution and abundance of Maui's dolphins (Cephalorhynchus hectori maui) along the North Island west coast, New Zealand. DOC science Internal Series. 19 pp.
Related Publications
  • Russell, K. 2000: Report on the changes in distribution of North Island Hector's dolphin. In Workshop on North Island Hector's dolphin proceedings. 9-10 May 2000. Wellington.
  • Slooten, E., Dawson, S.M., Pichler, F., & Russel, K. 2000: North Island Hector's Dolphin working paper summarising main research results. In Workshop on North Island Hector's dolphin proceedings. 9-10 May 2000. Wellington.
  • Abel, R.S., Dobbins, A.G. & Brown, T. 1971: Cephalorhynchus hectori subsp. bicolor sightings, capture, captivity. Investigations on Cetacea. G. Pilleri. Berne. 3:171-179.
  • Baker, A.N. 1978: The status of Hector's dolphin, Cephalorhynchus hectori (Van Beneden) in New Zealand waters. Report of the International Whaling Commission 28:331-334.
  • Baker, A.N., Smith, A.N.H., Pichler, F.B. 2002: Geographical variation in Hector's dolphin: recognition of new subspecies of Cephalorhynchus hectori. Journal of the Royal Society of New Zealand 32(4):713-727.
  • Cawthorn, M.W., 1988: Recent observations of Hector's dolphin, Cephalorhynchus hectori, in New Zealand. In, Reports of the International Whaling Commission (Special Issue 9): Biolgoy of the Genus Cepalorhynchus. International Whaling Commission, Cambridge.
  • Dawson, S.M. & Slooten, E., 1988: Hector's Dolphin, Cephalorhynchus hectori: Distribution and abundance. In, Reports of the International Whaling Commission (Special Issue 9): Biolgoy of the Genus Cepalorhynchus. International Whaling Commission, Cambridge.
  • Freeman, D. 2003: A review of records of Hector's dolphin (Cephalorhynchus hectori) from the East Coast of the North Island, New Zealand. Technical Support Series Number 11, East Coast Hawkes' Bay Conservancy, Department of Conservation, Gisborne.
  • Pichler, F., Baker, C.S., Dawson, S.M. & Slooten, E. 1998: Mitochondrial differences between east and west coast populations of Hector's dolphin. Conservation Biology 12(3):1-8.
  • Pichler, F., & Baker, C.S., 2000: Loss of genetic diversity in the endemic Hector's dolphin due to fisheries-related mortality. Proc. R. Soc. Lond. B 267:97-102.
  • Duignan, P.J. & Jones, G.W. 2005: Autopsy of cetaceans including those incidentally caught in commercial fisheries, 2002/03.Wellington, N.Z. : Dept. of Conservation, 2005. (DOC Science internal series ; 195) 22 p. ; 30 cm.
  • Taylor. A. & Currey, R. 2004: Beyond the Kelp. A short film supported by Natural History New Zealand & the University of Otago. Abyss Films.
  • Jonker, F.C. & Ferreira, S.M. 2004: Can echolocation devices be used to define harbour use by Maui's dolphins? Wellington, N.Z. : Dept. of Conservation, 2004. (DOC Science internal series ; 161) 21 p.
  • Slooten, E; Dawson, S.M; Rayment, W.J; Childerhouse, S.J. 2005: Distribution of Maui's dolphin, Cephalorhyncus [i.e. Cephalorhynchus] hectori maui. Wellington [N.Z.] : Ministry of Fisheries, 2005. (New Zealand fisheries assessment report ; 2005/28) 19, [2] p. : ill., maps ; 30 cm.
  • Baker, A.N. & Smith, A.N.H. 2005: Geographical variation in Hector's dolphin: recognition of new subspecies of Cephalorhynchus hectori. Journal of The Royal Society of New Zealand, Volume 32, Number 4, December 2002, pp 713–727
  • Russell, K. 2004: Maui's dolphin : New Zealand's North Island treasure - almost lost. Hamilton, N.Z.: Dept. of Conservation, Waikato Conservancy, [2004] 1 poster : col. ; 42 x 61 cm.
  • Department of Conservation, 2007: Hector's and Maui's Dolphin Threat Management Plan Draft for Public Consultation. August 2007.
  • Childerhouse, S. 2006: New Zealand progress report on cetacean research, April 2005 to March 2006, with statistical data for the calendar year 2005. Department of Conservation report.
  • Slooten, E; Dawson, S; Rayment, W. & Childerhouse, S. 2006: A new abundance estimate for Maui's dolphin : what does it mean for managing this critically endangered species? Biological conservation vol.128 (2006) : 576-581
Related Datasets

9. Related files

No files have been attached to this dataset

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