Professor Steve Dawson, Our staff, Department of Marine Science, University of Otago, New Zealand

Contact Details

Office 310 Castle Street, room 143
Tel +64 3 479 7468
Mob +64 21 276 4110
Email steve.dawson@otago.ac.nz

Academic Qualifications

MSc University of Auckland
PhD University of Canterbury

Research Interests

Conservation biology of marine mammals, especially Hector's dolphin
Incidental catch of marine mammals in fisheries
Acoustic behaviour and communication in cetaceans
Line-transect surveys for inshore cetaceans
Photogrammetry

Courses

MARI 302: Biology and Behaviour of Marine Vertebrates (Coordinator)
MARI 301: Marine Ecology
Mari 429: Coastal Marine Environment

Research Projects

Conservation biology and Ecology of Hector's dolphin
Conservation biology of Fiordland Bottlenose dolphins
Ecology and acoustic behaviour of sperm whales
UAV photogrammetry as a tool for understanding cetacean ecology

Visit here for more information on the New Zealand Whale & Dolphin Trust

Postgraduate Students

David Johnston – Thesis Title (MSc): Social aspects of demographic stochasticity in an endangered population of bottlenose dolphin (Tursiops truncatus)

María Valdés Hernández – Thesis Title (PhD): Effect of mussel farms on Hector’s dolphin, Cephalorhynchus hectori hectori, at Banks Peninsula, New Zealand: an ecosystem perspective

Lindsay Wickman – Thesis Title (MSc):The effects of a decreasing mark rate on precision of estimates of survival rate of Hector’s dolphins

Steph Bennington – Thesis Title (MSc): Habitat use of the bottlenose dolphins (Tursiops truncatus) of Fiordland: Where, why and the implications for management.

Rob Lewis – Thesis Title (MSc): Population demographics of sevengill sharks (Notorynchus cepedianus) in Paterson Inlet, Stewart Island.

Will Carome – Thesis Title (MSc): Effect of tourism on Hector’s dolphins in Akaroa Harbour

Toby Dickson – Thesis Title (MSc): Morphometrics of sperm whales and the relationship with click interpulse interval

Max Harvey – Thesis Title (MSc): Hector’s dolphins in Porpoise Bay: Abundance and tourism impacts

Recent graduates

Dr Tom Brough PhD (2019)
Dr Marta Guerra PhD (2019)
Tamlyn Somerville MSc (Distinction: 2019)
Lindsay Wickman MSc (Distinction: 2017)
Eva Leunissen MSc (Distinction: 2017)
David Johnston MSc (Distinction: 2017)

Awards

John Morton Medal (New Zealand Marine Sciences Society). Awarded for outstanding contribution to the advancement of marine conservation and sustainability in New Zealand. 2016 (Awarded jointly with Prof Elisabeth Slooten).
University of Otago Award for Excellence in Teaching – 2012.
Sir Charles Fleming Award (Royal Society of NZ) for outstanding contribution to conservation science. 2004. (Awarded jointly with Dr Elisabeth Slooten).

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Publications

Christiansen, F., Dawson, S. M., Durban, J. W., Fearnbach, H., Miller, C. A., Bejder, L., … Rayment, W., Leunissen, E., … Moore, M. J. (2020). Population comparison of right whale body condition reveals poor state of the North Atlantic right whale. Marine Ecology Progress Series, 640, 1-16. doi: 10.3354/meps13299

Brough, T., Rayment, W., Slooten, E., & Dawson, S. (2020). Spatiotemporal distribution of foraging in a marine predator: Behavioural drivers of hotspot formation. Marine Ecology Progress Series, 635, 187-202. doi: 10.3354/meps13198

Guerra, M., Wing, L., Dawson, S., & Rayment, W. (2020). Stable isotope analyses reveal seasonal and inter-individual variation in the foraging ecology of sperm whales. Marine Ecology Progress Series, 638, 207-219. doi: 10.3354/meps13255

Guerra, M., Dawson, S., Sabadel, A., Slooten, E., Somerford, T., Williams, R., Wing, L., & Rayment, W. (2020). Changes in habitat use by a deep-diving predator in response to a coastal earthquake. Deep Sea Research Part I, 158, 103226. doi: 10.1016/j.dsr.2020.103226

Lewis, R., Dawson, S., & Rayment, W. (2020). Estimating population parameters of broadnose sevengill sharks (Notorynchus cepedianus) using photo-ID capture-recapture. Journal of Fish Biology. Advance online publication. doi: 10.1111/jfb.14453

Authored Book - Research
Chapter in Book - Research
Journal - Research Article

Authored Book - Research

Slooten, L., & Dawson, S. (2013). Dolphins down under: Understanding the New Zealand dolphin. Dunedin, New Zealand: Otago University Press, 96p.

Dawson, S., & Slooten, E. (1996). Down-under Dolphins: The story of Hector's Dolphin. Christchurch, New Zealand: Canterbury University Press, 60p.

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Chapter in Book - Research

Dawson, S. M. (2018). Cephalorhynchus dolphins: C. heavisidii, C. eutropia, C. hectori, and C. commersonii. In B. Würsig, J. G. M. Thewissen & K. M. Kovacs (Eds.), Encyclopedia of marine mammals. (3rd ed.) (pp. 166-172). London, UK: Academic Press. doi: 10.1016/B978-0-12-804327-1.00086-8

Tregenza, N., Dawson, S., Rayment, W., & Verfuss, U. (2016). Listening to echolocation clicks with PODs. In W. W. L. Au & M. O. Lammers (Eds.), Listening in the ocean: New discoveries and insights on marine life from autonomous passive acoustic recorders. (pp. 163-206). New York: Springer. doi: 10.1007/978-1-4939-3176-7_7

Dawson, S. M. (2009). Cephalorhynchus dolphins: C. heavisidii, C. eutropia, C. hectori, and C. commersonii. In W. F. Perrin, B. Würsig & J. G. M. Thewissen (Eds.), Encyclopedia of marine mammals. (2nd ed.) (pp. 191-195). Burlington, MA: Academic Press.

Dawson, S. M. (2008). Marine mammals. In M. Winterbourn, G. Knox, C. Burrows & I. Marsden (Eds.), The natural history of Canterbury. (3rd ed.) (pp. 685-702). Christchurch, New Zealand: Canterbury University Press.

Brett, T., Carter, L., Carter, R. M., Darby, J., Davis, L., Dawson, S., Jillett, J., Probert, K., & Spencer, H. (2003). The open sea. In J. T. Darby, R. E. Fordyce, A. F. Mark, P. K. Probert & C. R. Townsend (Eds.), The natural history of Southern New Zealand. (pp. 313-338). Dunedin: University of Otago Press.

Pichler, F. B., Slooten, E., & Dawson, S. M. (2003). Hector's dolphins and fisheries in New Zealand: A species at risk. In N. J. Gales, M. A. Hindell & R. Kirkwood (Eds.), Marine mammals: Fisheries, tourism and management issues. (pp. 153-173). Collingwood, VIC: CSIRO.

Dawson, S. M. (2002). Cephalorhynchus dolphins. In W. F. Perrin, B. Wurisg & J. G. M. Thewissen (Eds.), Encyclopedia of Marine Mammals. (pp. 200-203). San Diego: Academic Press.

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Journal - Research Article

Brough, T., Rayment, W., Slooten, E., & Dawson, S. (2019). Fine scale distribution for a population of New Zealand's only endemic dolphin (Cephalorhynchus hectori) shows long-term stability of coastal hotspots. Marine Mammal Science, 35(1), 140-163. doi: 10.1111/mms.12528

Brough, T., Rayment, W., & Dawson, S. (2019). Using a recreational grade echosounder to quantify the potential prey field of coastal predators. PLoS ONE, 14(5), e0217013. doi: 10.1371/journal.pone.0217013

Webster, T. A., Van Parijs, S. M., Rayment, W. J., & Dawson, S. M. (2019). Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand. Royal Society Open Science, 6, 181487. doi: 10.1098/rsos.181487

Leunissen, E. M., Rayment, W. J., & Dawson, S. M. (2019). Impact of pile-driving on Hector's dolphin in Lyttelton Harbour, New Zealand. Marine Pollution Bulletin, 142, 31-42. doi: 10.1016/j.marpolbul.2019.03.017

Leunissen, E. M., & Dawson, S. M. (2018). Underwater noise levels of pile-driving in a New Zealand harbour, and the potential impacts on endangered Hector's dolphins. Marine Pollution Bulletin, 135, 195-204. doi: 10.1016/j.marpolbul.2018.07.024

Davidson, A. R., Rayment, W., Dawson, S. M., Webster, T., & Slooten, E. (2018). Estimated calving interval for the New Zealand southern right whale (Eubalaena australis). New Zealand Journal of Marine & Freshwater Research, 52(3), 372-383. doi: 10.1080/00288330.2017.1397034

Rayment, W., Webster, T., Brough, T., Jowett, T., & Dawson, S. (2018). Seen or heard? A comparison of visual and acoustic autonomous monitoring methods for investigating temporal variation in occurrence of southern right whales. Marine Biology, 165, 12. doi: 10.1007/s00227-017-3264-0

Steel, D., Anderson, M., Garrigue, C., Olavarría, C., Childerhouse, S., Clapham, P., … Dawson, S., … Slooten, L., … Baker, C. S. (2018). Migratory interchange of humpback whales (Megaptera novaeangliae) among breeding grounds of Oceania and connections to Antarctic feeding areas based on genotype matching. Polar Biology, 41(4), 653-662. doi: 10.1007/s00300-017-2226-9

Forney, K. A., Southall, B. L., Slooten, E., Dawson, S., Read, A. J., Baird, R. W., & Brownell, Jr, R. L. (2017). Nowhere to go: Noise impact assessments for marine mammal populations with high site fidelity. Endangered Species Research, 32, 391-413. doi: 10.3354/esr00820

Johnston, D. R., Rayment, W., Slooten, E., & Dawson, S. M. (2017). A time-based method for defining associations using photo-identification. Behaviour, 154(9-10), 1029-1050. doi: 10.1163/1568539X-00003455

Dawson, S. M., Fordyce, R. E., Ridgway, S. H., Brough, T. E., & Slooten, E. (2017). Observations of a New Zealand dolphin (Cephalorhynchus hectori) breathing via its mouth. Marine Mammal Science, 33(1), 350-355. doi: 10.1111/mms.12349

Dawson, S. M., Bowman, M. H., Leunissen, E., & Sirguey, P. (2017). Inexpensive aerial photogrammetry for studies of whales and large marine animals. Frontiers in Marine Science, 4, 366. doi: 10.3389/fmars.2017.00366

Agnew, P., Lalas, C., Wright, J., & Dawson, S. (2016). Annual variation in recruitment and age-specific survival of Little Penguins, Eudyptula minor. Emu, 116, 62-70. doi: 10.1071/MU15072

Webster, T. A., Dawson, S. M., Rayment, W. J., Parks, S. E., & Van Parijs, S. M. (2016). Quantitative analysis of the acoustic repertoire of southern right whales in New Zealand. Journal of the Acoustical Society of America, 140(1), 322-333. doi: 10.1121/1.4955066

Brough, T. E., Henderson, S., Guerra, M., & Dawson, S. M. (2016). Factors influencing heterogeneity in female reproductive success in a critically endangered population of bottlenose dolphins. Endangered Species Research, 29(3), 255-270. doi: 10.3354/esr00715

Guerra, M., & Dawson, S. M. (2016). Boat-based tourism and bottlenose dolphins in Doubtful Sound, New Zealand: The role of management in decreasing dolphin-boat interactions. Tourism Management, 57, 3-9. doi: 10.1016/j.tourman.2016.05.010

Dittmann, S., Dawson, S., Rayment, W., Webster, T., & Slooten, E. (2016). Hector's dolphin movement patterns in response to height and direction of ocean swell. New Zealand Journal of Marine & Freshwater Research, 50(2), 228-239. doi: 10.1080/00288330.2015.1119165

Brough, T. E., Guerra, M., & Dawson, S. M. (2015). Photo-identification of bottlenose dolphins in the far south of New Zealand indicates a 'new', previously unstudied population. New Zealand Journal of Marine & Freshwater Research, 49(1), 150-158. doi: 10.1080/00288330.2014.984728

Agnew, P., Lalas, C., Wright, J., & Dawson, S. (2015). Variation in breeding success and survival of little penguins Eudyptula minor in response to environmental variation. Marine Ecology Progress Series, 541, 219-229. doi: 10.3354/meps11538

Rayment, W., Dawson, S., & Webster, T. (2015). Breeding status affects fine-scale habitat selection of southern right whales on their wintering grounds. Journal of Biogeography, 42(3), 463-474. doi: 10.1111/jbi.12443

Peel, D., Miller, B. S., Kelly, N., Dawson, S., Slooten, E., & Double, M. C. (2014). A simulation study of acoustic-assisted tracking of whales for mark-recapture surveys. PLoS ONE, 9(5), e95602. doi: 10.1371/journal.pone.0095602

Guerra, M., Dawson, S. M., Brough, T. E., & Rayment, W. J. (2014). Effects of boats on the surface and acoustic behaviour of an endangered population of bottlenose dolphin. Endangered Species Research, 24(3), 221-236. doi: 10.3354/esr00598

Henderson, S. D., Dawson, S. M., Currey, R. J. C., Lusseau, D., & Schneider, K. (2014). Reproduction, birth seasonality, and calf survival of bottlenose dolphins in Doubtful Sound, New Zealand. Marine Mammal Science, 30(3), 1067-1080. doi: 10.1111/mms.12109

Henderson, S. D., Dawson, S. M., Rayment, W., & Currey, R. J. C. (2013). Are the 'resident' dolphins of Doubtful Sound becoming less resident? Endangered Species Research, 20(2), 99-107. doi: 10.3354/esr00484

Agnew, P., Lalas, C., Wright, J., & Dawson, S. (2013). Effects of attached data-logging devices on little penguins (Eudyptula minor). Marine Biology, 160(9), 2375-2382. doi: 10.1007/s00227-013-2231-7

Dawson, S. M., Northridge, S., Waples, D., & Read, A. J. (2013). To ping or not to ping: The use of active acoustic devices in mitigating interactions between small cetaceans and gillnet fisheries. Endangered Species Research, 19(3), 201-221. doi: 10.3354/esr00464

Miller, B., Dawson, S., & Vennell, R. (2013). Underwater behavior of sperm whales off Kaikoura, New Zealand, as revealed by a three-dimensional hydrophone array. Journal of the Acoustical Society of America, 134(4), 2690-2700. doi: 10.1121/1.4818896

Turek, J., Slooten, E., Dawson, S., Rayment, W., & Turek, D. (2013). Distribution and abundance of Hector's dolphins off Otago, New Zealand. New Zealand Journal of Marine & Freshwater Research, 47(2), 181-191. doi: 10.1080/00288330.2013.771687

Miller, E., Lalas, C., Dawson, S., Ratz, H., & Slooten, E. (2013). Hector's dolphin diet: The species, sizes and relative importance of prey eaten by Cephalorhynchus hectori, investigated using stomach content analysis. Marine Mammal Science, 29(4), 606-628. doi: 10.1111/j.1748-7692.2012.00594.x

Miller, B. S., Growcott, A., Slooten, E., & Dawson, S. M. (2013). Acoustically derived growth rates of sperm whales (Physeter macrocephalus) in Kaikoura, New Zealand. Journal of the Acoustical Society of America, 134(3), 2438-2445. doi: 10.1121/1.4816564

Dawson, S., Fletcher, D., & Slooten, E. (2013). Habitat use and conservation of an endangered dolphin. Endangered Species Research, 21, 45-54. doi: 10.3354/esr00508

Rayment, W., Davidson, A., Dawson, S., Slooten, E., & Webster, T. (2012). Distribution of southern right whales on the Auckland Islands calving grounds. New Zealand Journal of Marine & Freshwater Research, 46(3), 431-436. doi: 10.1080/00288330.2012.697072

Growcott, A., Sirguey, P., & Dawson, S. M. (2012). Development and assessment of a digital stereo photogrammetric system to measure cetaceans at sea. Photogrammetric Engineering & Remote Sensing, 78(3), 237-246.

Gormley, A. M., Slooten, E., Dawson, S., Barker, R. J., Rayment, W., du Fresne, S., & Bräger, S. (2012). First evidence that marine protected areas can work for marine mammals. Journal of Applied Ecology, 49(2), 474-480. doi: 10.1111/j.1365-2664.2012.02121.x

Fletcher, D., Lebreton, J.-D., Marescot, L., Schaub, M., Gimenez, O., Dawson, S., & Slooten, E. (2012). Bias in estimation of adult survival and asymptotic population growth rate caused by undetected capture heterogeneity. Methods in Ecology & Evolution, 3, 206-216. doi: 10.1111/j.2041-210X.2011.00137.x

Elliott, R. G., Dawson, S. M., & Rayment, W. J. (2012). Optimizing T-pod settings and testing range of detection for bottlenose dolphins in Doubtful Sound, New Zealand. Journal of the Marine Biological Association of the United Kingdom, 92(8), 1901-1907. doi: 10.1017/s002531541100035x

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