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marine estuarine coastal benthic soft chemistry core

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  • Chemical monitoring of sediments in estuaries within the Bay of Plenty region for Environment Bay of Plenty. Sampling sites are located in Tauranga and Ohiwa Harbours. Sampling frequency = 3yearly (winter). Sampling began in 2003 and is ongoing. Number of sites = 38 total: Tauranga (31), ?hiwa (7). Extent of site = 20m diameter circle plot at approximately mid-tide mark. Number of replicates = 1 per site (composed of 15 sub-samples). Measured variables = Sediment characteristics (TOC, cadmium, nickel, lead, zinc, chromium, arsenic and copper). Sampling protocol & QA = Internal protocol and QA procedures. Collection of surface sediment (top 2cm) form sites. Sediment analysis external (Malvern Particle Analyser).