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Chatham-Challenger

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  • This report describes data sets derived from benthic invertebrate samples collected during the Ocean Survey 20/20 Chatham-Challenger Hydrographic, Biodiversity and Seabed Habitats Project in 2007. Samples were collected from the Chatham Rise and the Challenger Plateau using several gear types: coarse mesh ‘seamounts’ epibenthic sled and beam trawl (sampling mega-epifauna); multicorer (meiofauna); fine mesh ‘Brenke’ epibenthic sled (macro-epifauna and hyperbenthic fauna); the still image camera of NIWA’s Deep Towed Imaging System (DTIS) (mega- and macro-epifauna, bioturbation, and substrate types), and the video camera of DTIS (mega-epifauna and substrate types). The report: (1) details the samples that were available for analysis, (2) describes the methods used to process and extract data from these samples, and (3) presents summaries of the final data sets.