b72691e8-a01a-4a16-bde0-68f4e953016e Data curator NIWA National Institute of Water & Atmospheric Research curator@niwa.co.nz 2012-08-08T08:14:28 ISO 19115:2003/19139 1.0 Healthy Estuary and Rivers of the City (Canterbury Region) Robertson, B.; Gillespie, P.; Asher, R.; Frisk, S.; Keeley, N.; Hopkins, G.; Thompson, S.J.; Tuckey, B.J. 2002. Estuarine Environmental Assessment and Monitoring, A National Protocol. Part A. Development, Part B. Appendices and Part C. Application. Prepared for supporting Councils and the Ministry for the Environment, Sustainable Management Fund Contract No.5096. Part A. 93p. Part B. 159p. Part C 40p plus field sheets. Physical, chemical and biological monitoring of Avon-Heathcote Estuary/Ihuta for Christchurch City Council, Environment Canterbury and the Ihutai Trust programme. Sampling frequency = annual infaunal, grain size and redox sampling (Mar/Apr), 5 yearly sediment quality sampling, monthly water quality sampling. Number of sites = 6 (benthic sampling) and 10 (water quality). Extent of site = 1600m2 (40m x 40m) sites in the estuary, 300m2 (15m x 20m) site in lower Heathcote River and 600m2 (10m x 60m) in lower Avon River. Number of replicates = 15 infaunal cores per site, 5 replicate sediment samples (composite) from 3 subplots per site, 1 water quality replicate per site. Measured variables = Infaunal communities (species identifed to lowest taxonomic level possible and enumerated; mudflat snails, crabs, cockles and wedge shells measured. Percentage cover of epiflora (macroalgae, zostera and benthic microalgae films). Sediment characteristics (grain size, ash free dry weight, redox, chlorophyll a, nitrogen, phosphorus, cadmium, nickel, lead, zinc, chromium, copper and arsenic). Water quality samples taken from top 0.5m of water column (salinity, DO%, DO mg/l, temperature, PH, E-coli, Enterococci, faecal coliforms, TP, DRP, TN, NNN, NH4, chloropyll a, turbidity, suspended solids, metals, organic carbon). Sampling protocol & QA = Benthic and sediment sampling use similar methods to those outlined by Robertson et al. (2002). Water quality samples follow an internal protocol manual. Analysis by EOS Ecology and external (Malvern Particle Analyser). Environment Canterbury Christchurch City Council Ihutai Trust Lesley Bolton-Ritchie Environment Canterbury +64 3 3653828 or 0800 324 636 (within New Zealand) +64 3 3653194 Ellesmere Centre, 24 Edward Street, Lincoln Christchurch 8140 New Zealand lesley.bolton-ritchie@ecan.govt.nz http://www.ccc.govt.nz/ WWW:LINK-1.0-http--link Christchurch City Council Link to the Christchurch City Council website marine estuarine coastal water column benthic soft ecological chemistry physical visual observation core MEMP Permission of client required (Christchurch City Council) to release data/reports from Environment Canterbury. This is a joint programme that involves Environment Canterbury, CCC and Ihutai Trust. eng environment Avon-Heathcote Estuary/Ihutai (stretching from just outside the estuary mouth to the lower Avon and Heathcote rivers) 172.566 172.768 -43.5852 -43.500 2007-01-01T00:00:00 https://dc.niwa.co.nz/niwa_dc/srv/metadata/b72691e8-a01a-4a16-bde0-68f4e953016e WWW:LINK-1.0-http--metadata-URL Point of truth URL of this metadata record http://ecan.govt.nz/get-involved/local-projects-community-groups/avon-heathcote-estuary-ihutai-trust/Pages/healthy-estuary-rivers-christchurch.aspx WWW:LINK-1.0-http--downloaddata Link to the Environment Canterbury website where annual summary results are presented in reports http://ecan.govt.nz/publications/Reports/healthy-estuary-rivers-city.pdf WWW:LINK-1.0-http--downloaddata Link to where the outline of the sampling programme can be found. Quality assurance was imposed on methods. Temporal data were in NZST. Data collection information: Infaunal core = 150mm tall x 130mm diameter, intertidal quadrat = 0.5m x 0.5m, sediment sample = top 20mm surface sediment collected. Water sample taken from top 0.5m of water column.