A spatial analysis of commercial ecotourism businesses in New Zealand: a c 1999 benchmarking exercise using GIS / Angela Dickey, James E. S. Higham
Managing the impacts of dolphin-based tourism through the definition of critical habitats: the case of bottlenose dolphins (Tursiops spp.) in Doubtful Sound, New Zealand / D. Lusseau, J. E. S. Higham