Estimating the abundance of the Hector’s dolphins (Cephalorhynchus hectori hectori) that use Porpoise Bay, New Zealand

References

• Ballance LT. 1990. Residence patterns, group organisation and surfacing associations of bottlenose dolphins in Kino Bay, Gulf of California, Mexico. In: Leatherwood S, Reeves RR, editor. The bottlenose dolphin. Academic Press, San Diego; p. 267–283.
   Google Scholar
• Barlow J, Taylor BL. 2005. Estimates of sperm whale abundance in the north-eastern temperate Pacific from a combined acoustic and visual survey. Marine Mammal Science. 21:429–445.
   Web of Science ®Google Scholar
• Bejder L, Dawson S. 2001. Abundance, residency, and habitat utilisation of Hector's dolphins (Cephalorhynchus hectori) in Porpoise Bay, New Zealand. New Zealand Journal of Marine and Freshwater Research. 35(2):277–287.
   Web of Science ®Google Scholar
• Bennington S, Rayment W, Currey R, Oldridge L, Henderson S, Guerra M, Brough T, Johnston D, Corne C, Johnson D, et al. 2021. Long-term stability in core habitat of an endangered population of bottlenose dolphins (Tursiops truncatus): implications for spatial management. Aquatic Conservation: Marine and Freshwater Ecosystems. 31(3):665–676.
   Web of Science ®Google Scholar
• Breininger DR, Barkaszi MJ, Smith RB, Oddy DM, Provancha JA. 1998. Prioritizing wildlife taxa for biological diversity conservation at the local scale. Environmental Management. 22(2):315–321.
   PubMed Web of Science ®Google Scholar
• Buckland ST, Anderson DR, Burnham KP, Laake JL. 1993. Distance sampling: estimating abundance of biological populations. Chapman & Hall, London.
   Google Scholar
• Burkhart SM, Slooten E. 2003. Population viability analysis for Hector's dolphin (Cephalorhynchus hectori): a stochastic population model for local populations. New Zealand Journal of Marine and Freshwater Research. 37(3):553–566.
   Web of Science ®Google Scholar
• Ceballos G, Ehrlich PR, Raven PH. 2020. Vertebrates on the brink as indicators of biological annihilation and the sixth mass extinction. Proceedings of the National Academy of Sciences. 117(24):13596–13602.
   PubMed Web of Science ®Google Scholar
• Clement D, Mattlin R, Torres L. 2011. Distribution and abundance of the south coast, South Island Hector’s dolphin. Project PRO2009-01A. Unpublished report held by Ministry for Primary Industries, Wellington.
   Google Scholar
• Constantine R, Steel D, Carroll E, Hamner RM, Hansen C, Hickman G, Hillock K, Ogle M, Tukua P, Baker CS. 2021. Estimating the abundance and effective population size of Māui dolphins (Cephalorhynchus hectori maui) in 2020–2021 using microsatellite genotypes, with retrospective matching to 2001. Auckland: Department of Conservation.
   Google Scholar
• Dawson S, Slooten E, DuFresne S, Wade P, Clement D. 2004. Small-boat surveys for coastal dolphins: line-transect surveys of Hector’s dolphins (Cephalorhynchus hectori). Fishery Bulletin. 102(3):441–451.
   Web of Science ®Google Scholar
• Dawson SM. 1991. Incidental catch of Hector’s dolphin in inshore gillnets. Marine Mammal Science. 7:283–295.
   Web of Science ®Google Scholar
• Eguchi T. 2014. Estimating the proportion of identifiable individuals and group sizes in photographic identification studies. Marine Mammal Science. 30(3):1122–1139.
   Web of Science ®Google Scholar
• Fisheries New Zealand. 2020. Māui’s and Hector’s Dolphin Regulations. [accessed 2022 March 6]. https://fs.fish.govt.nz/Page.aspx?pk=175&tk=534.
   Google Scholar
• Fletcher D, Dixon PM. 2011. Modelling data from different sites, times or studies: weighted vs. unweighted regression. Methods in Ecology and Evolution. 3(1):168–176.
   Web of Science ®Google Scholar
• Forney KA, Moore JE, Barlow J, Carretta JV, Benson SR. 2021. A multidecadal Bayesian trend analysis of harbor porpoise (Phocoena phocoena) populations off California relative to past fishery bycatch. Marine Mammal Science. 37(2):546–560.
   Web of Science ®Google Scholar
• Gormley AM, Dawson SM, Dawson SM, Slooten E, Bräger S. 2005. Capture-recapture estimates of Hector's dolphin abundance at Banks Peninsula, New Zealand. Marine Mammal Science. 21(2):204–216.
   Web of Science ®Google Scholar
• Gormley AM, Slooten E, Dawson S, Barker RJ, 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.
   Web of Science ®Google Scholar
• Green EL. 2003. Population biology and the effects of tourism on Hector's Dolphins (Cephalorhynchus hectori) in Porpoise Bay, New Zealand [master’s thesis]. University of Otago.
   Google Scholar
• Hammond PS. 1986. Estimating the size of naturally marked whale populations using capture-recapture techniques. Report of the International Whaling Commission. Special Issue. 8:252–282.
   Google Scholar
• Hammond PS. 2009. Mark–recapture. In: Perrin WF, Würsig B, Thewissen JGM, editor. Encyclopedia of marine mammals. 2nd ed. Academic Press, San Diego; p. 705–709.
   Google Scholar
• Hamner RM, Pichler FB, Heimeier D, Constantine R, Baker CS. 2012. Genetic differentiation and limited gene flow among fragmented populations of New Zealand endemic Hector’s and Maui’s dolphins. Conservation Genetics. 13:987–1002.
   Web of Science ®Google Scholar
• Harvey M. 2021. Ecology and conservation of Hector’s dolphins in Porpoise Bay, Southland [master’s thesis]. University of Otago.
   Google Scholar
• International Union for Conservation of Nature [IUCN]. 2012. Actions to Avert the Extinctions of Rare Dolphins: Maui Dolphins, Hector’s Dolphins, Vaquita Porpoises and South Asian River and Freshwater Dependent Dolphins and Porpoises. Recommendation from the 2012 World Conservation Congress in Jeju, South Korea. Glund. [accessed 2022 March 6]. https://portals.iucn.org/library/sites/library/files/resrecfiles/WCC_2012_REC_142_EN.pdf.
   Google Scholar
• Kutner M, Nachtsheim C, Neter J, Li W. 2005. Building the regression model III: Remedial measures. In: Applied Linear Statistical Models. McGraw-Hill/Irwin Series, 421–480.
   Google Scholar
• Mackenzie DJ, Clement DM. 2016. Abundance and distribution of WCSI Hector’s dolphin. New Zealand Aquatic Environment and Biodiversity Report 168.
   Google Scholar
• McCullagh P, Nalder JA. 1989. Generalized linear models. Chapman Hall, London.
   Google Scholar
• Merrick R, Silber GK, Demaster DP, Reynolds JE. 2009. Endangered species and populations. In: Perrin WF, Würsig B, Thewissen JGM, editor. Encyclopedia of marine mammals. 2nd ed. Academic Press, San Diego; p. 368–375.
   Google Scholar
• Ministry for Primary Industries, Department of Conservation. 2019. Protecting Hector’s and Māui Dolphin. consultation on proposals for an updated threat management plan. Wellington: Ministry for Primary Industries.
   Google Scholar
• Moriarty E, Pantos O, Coxon S. 2019. Sources of Pollution in the Mataura Freshwater Management Unit. Report prepared for Environment Southland. [Accessed 2022 April 11]. https://www.es.govt.nz/repository/libraries/id:26gi9ayo517q9stt81sd/hierarchy/document-library/reports/science-reports/Environment%20Southland%20-%20Mataura%20FMU.pdf.
   Google Scholar
• Moxley JH, Bogomolni A, Hammill MO, Moore KM, Polito MJ, Sette L, Sharp W, Waring GT, Gilbert JR, Halpin PN, Johnston DW. 2017. Google haul out: earth observation imagery and digital aerial surveys in coastal wildlife management and abundance estimation. BioScience. 67(8):760–768.
   PubMed Web of Science ®Google Scholar
• New Zealand Marine Mammals Protection Act and Regulations [MMPR]. 1992. New Zealand Legislation.
   Google Scholar
• Pichler F. 2002. Genetic assessment of population boundaries and gene exchange in Hector’s dolphin. DOC Science Internal Series. 44:1–37.
   Google Scholar
• Pichler FB, Dawson SM, Slooten E, Baker CS. 1998. Geographic isolation of Hector’s dolphin populations described by mitochondrial DNA sequences. Conservation Biology. 12(3):676–682.
   Web of Science ®Google Scholar
• Rayment W, Dawson S, Slooten E, Bräger S, du Fresne S, Webster T. 2009. Kernel density estimates of alongshore home range of Hector’s dolphins at Banks Peninsula, New Zealand. Marine Mammal Science. 25:537–556.
   Web of Science ®Google Scholar
• Rayment WJ, Dawson S, Slooten E. 2010. Seasonal changes in distribution of Hector’s dolphin at Banks Peninsula, New Zealand: implications for protected area design. Aquatic Conservation: Marine and Freshwater Ecosystems. 20(1):106–116.
   Web of Science ®Google Scholar
• R Development Core Team. . 2020. R: a language and environment for statistical computing. Version 4.0.0. Vienna: R Foundation for Statistical Computing. http://www.rproject.org/.
   Google Scholar
• Reeves RR, Dawson SM, Jefferson TA, Karczmarski L, Laidre K, O’Corry-Crowe G, Rojas-Bracho L, Secchi ER, Slooten E, Smith BD, et al. 2013. Cephalorhynchus hectori. The IUCN Red List of Threatened Species 2013.
   Google Scholar
• Schenker N, Gentleman JF. 2001. On judging the significance of differences by examining the overlap between confidence intervals. The American Statistician. 55(3):182–186.
   Web of Science ®Google Scholar
• Seber GAF. 1982. Estimation of animal abundance and related parameters. Griffin, London.
   Google Scholar
• Slooten E, Dawson SM. 1988. Studies on Hector’s dolphin, Cephalorhynchus hectori: a progress report. Report of the International Whaling Commission. Special Issue. 9:325–338.
   Google Scholar
• Slooten E, Dawson SM. 2020. Updated population viability analysis, population trends and PBRs for Hector's and Maui dolphin. bioRxiv.
   Google Scholar
• Slooten E, Dawson SM, Lad F. 1992. Survival rates of photographically identified Hector's dolphins from 1984 to 1988. Marine Mammal Science. 8(4):327–343.
   Web of Science ®Google Scholar
• Slooten E, Dawson SM, Rayment WJ. 2004. Aerial surveys for coastal dolphins: abundance of Hector’s dolphins off the South Island west coast, New Zealand. Marine Mammal Science. 20:477–490.
   Web of Science ®Google Scholar
• Slooten E, Fletcher D, Taylor BL. 2000. Accounting for uncertainty in risk assessment: case study of Hector's dolphin mortality due to gillnet entanglement. Conservation Biology. 14(5):1264–1270.
   Web of Science ®Google Scholar
• Slooten E, Lad F. 1991. Population biology and conservation of Hector's dolphin. Canadian Journal of Zoology. 69(6):1701–1707.
   Web of Science ®Google Scholar
• Soulé ME. 1987. Viable populations for conservation. Cambridge University Press, Cambridge.
   Google Scholar
• Stevick PT, Palsboll PJ, Smith TD, Bravington MV, Hammond PS. 2001. Errors in identification using natural markings: rates, sources and effects on capture-recapture estimates of abundance. Canadian Journal of Fisheries and Aquatic Sciences. 58(9):1861–1870.
   Web of Science ®Google Scholar
• Taylor BL, Gerrodette T. 1993. The uses of statistical power in conservation biology: the vaquita and northern spotted owl. Conservation Biology. 7(3):489–500.
   Web of Science ®Google Scholar
• Taylor BL, Martinez M, Gerrodette T, Barlow J, Hrovat YN. 2007. Lessons from monitoring trends in abundance of marine mammals. Marine Mammal Science. 23(1):157–175.
   Web of Science ®Google Scholar
• Thompson PM, Wilson B, Grellier K, Hammond PS. 2000. Combining power analysis and population viability analysis to compare traditional and precautionary approaches to conservation of coastal cetaceans. Conservation Biology. 14(5):1253–1263.
   Web of Science ®Google Scholar
• 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 and Freshwater Research. 47(2):181–191.
   Web of Science ®Google Scholar
• Urian K, Gorgone A, Read A, Balmer B, Wells RS, Berggren P, Durban J, Eguchi T, Rayment W, Hammond PS. 2015. Recommendations for photo-identification methods used in capture-recapture models with cetaceans. Marine Mammal Science. 31(1):298–321.
   Web of Science ®Google Scholar
• Wade PR. 1998. Calculating limits to the allowable human-caused mortality of cetaceans and pinnipeds. Marine Mammal Science. 14(1):1–37.
   Web of Science ®Google Scholar
• Webster T, Rayment W. 2008. Abundance estimate for Hector’s dolphins using Porpoise Bay January and February 2008. Prepared for Department of Conservation, Southland Conservancy.
   Google Scholar
• Wickman L, Rayment W, Slooten E, Dawson SM. 2021b. An observed decline in the mark rate of Hector's dolphins at Banks Peninsula, New Zealand. Marine Mammal Science. 37(4):1544–1551.
   Web of Science ®Google Scholar
• Wickman L, Rayment WJ, Slooten E, Dawson S. 2021a. Recommendations for estimating mark rate of cetaceans in photo-ID research: A critique of field sampling protocols and variance estimation. Marine Mammal Science. 37:328–343.
   Web of Science ®Google Scholar
• Williams JA, Dawson SM, Slooten E. 1993. The abundance and distribution of bottle-nosed dolphins (Tursiops truncatus) in Doubtful Sound, New Zealand. Canadian Journal of Zoology. 71:2080–2088.
   Web of Science ®Google Scholar
• Wilson B, Hammond PS, Thompson PM. 1999. Estimating size and assessing trends in a coastal bottlenose dolphin population. Ecological Applications. 9(1):288–300.
   Web of Science ®Google Scholar
• Witmer GW. 2005. Wildlife population monitoring: some practical considerations. Wildlife Research. 32(3):259–263.
   Web of Science ®Google Scholar
• Würsig B, Jefferson TA. 1990. Methods of photoidentification for small cetaceans. Report of the International Whaling Commission Special Issue. 12:43–52.
   Google Scholar
• Zar JH. 1996. Biostatistical analysis. Prentice Hall, Upper Saddle River.
   Google Scholar