trawling. Species include the main hoki, hake, ling, silver warehou, squid, orange roughy and deep sea (oreo) dory fisheries. The traditional approach to fisheries management has been to focus on a single species – determining how many can be caught before the breeding population is affected to the point of harming the species fishery. There is a current trend towards ecosystem based fisheries. Removing any fish affects other marine life up and down the food chain, such as marine life that eat the fish, and the marine life eating the marine life that eat the fish. Scientists from NIWA are examining over 40,000 fish stomachs to see what different species are eating across the Chatham Rise. These studies, combined with other studies on marine mammals and sea birds and with relevant ocean and climate studies, will show how the different parts fit together in the Chatham Rise ecosystem. Notes References Stilwell, Jeffrey D.; Consoli, Christopher P.; Sutherland, Rupert; Salisbury, Steven; Rich, Thomas H.; Vickers-Rich, Patricia A.; Currie, Philip J.; Wilson, Graeme J. (2006): Dinosaur sanctuary on the Chatham Islands, Southwest Pacific: First record of theropods from the K–T boundary Takatika Grit. Palaeogeography, Palaeoclimatology, Palaeoecology 230(): 243–250. Historical geology Geography of the New Zealand seabed Zealandia Pacific Ocean Fishing areas of the Pacific Ocean Geography of the Chatham Islands Fishing in New Zealand