NIWA - Metadata Catalogue
Topic
environment
228 record(s)
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Chemical monitoring of sediments in estuaries within the Waikato region for Waikato Regional Council. Sampling sites are located in the Firth of Thames, Whaingaroa (Raglan ) Harbour, Port Waikato, Aotea Harbour, Kawhia Harbour and Tairua Harbour. Sampling frequency = every 5 years. Sampling began in 2003 (not at all sites) and is ongoing, but irregular. Number of sites = 103 total; 10 sites have been monitored twice, and 93 sites sampled once so far. Extent of site = 10,000m2 (100m x 100m). Number of replicates = 12 per site. Measured variables = Sediment characteristics (cadmium, nickel, lead, zinc, chromium, copper, arsenic, organics, antimony, mercury and silver). Sampling protocol & QA = Internal sampling protocol. All analysis on the sediment samples was undertaken on the sub-2mm fraction of the sediments and was conducted by Hills Laboratories
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Water quality monitoring of coastal waters within the Bay of Plenty region for Environment Bay of Plenty. Sampling sites are representative of harbours and estuaries throughout the region. Sampling frequency = 2monthly. Sampling began in 1990 and is ongoing. Number of sites = 30 total (27 high tide sites of which 21 are current and 3 low tide sites). Number of replicates = 1 per site. Measured variables = Water quality: salinity, conductivity, DO%, DOmg/l, temp, PH, E coli, Enterococci, faecal coliforms, TP, DRP, TN, NNN, NH4, Chlorophyll a, turbidity, suspended solids and black disc. Sampling protocol & QA = Internal sampling protocol using MoH/MfE Guidelines
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Physical and biological monitoring of estuaries within the Tasman district for Tasman District Council. Sampling sites are located in Ruataniwha, Motupipi, Moutere and Waimea estuaries and Motueka Delta. Sampling frequency = annual (spring or summer). Sampling began in 2002 and is ongoing. Number of sites = 4 total. Extent of site = 1800m2 (60m x 30m). Number of replicates = 10 infaunal cores and 5 replicate sediment samples per site. Measured variables = Infaunal communities (species identified to lowest taxonomic level possible and enumerated). Epifaunal quadrat (0.25m2). Sediment characteristics: basic grain size, ash free dry weight, redox (in field), nitrogen, phosphorus, cadmium, nickel, lead, zinc, chromium and copper (ICPMS). Sediment erosion/deposition (cm/y): depth of sediment layer measured (using 4 concrete plates buried at most sites). Sampling protocol & QA = Benthic and sediment sampling use similar methods to those outlined by Robertson et al. (2002). Internal QA procedures. Larger fauna are indentified internally with small and cryptic animals sent to external taxonomic experts. Basic sediment grain size = 2mm & 63µm sieves, gravimetric (% gravel, sand, and silt)
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The Marine Environment Classification (MEC), a GIS-based environmental classification of the marine environment of the New Zealand region, is an ecosystem-based spatial framework designed for marine management purposes
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Images from Cam-Era is a network of computer-controlled video cameras that monitor the New Zealand environment for research and resource management. These are also useful for surfers and swimmers.
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Meta information for the stations of a network of computer-controlled video cameras that monitor the New Zealand environment (for research and resource management) while simultaneously providing images for surfers, swimmers, and other beach users.
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Major NIWA Timeseries Archive mainly used for freshwater data (Water Resources Archive)
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Physical and biological monitoring of rocky reefs within the Auckland region for Auckland Regional Council. Sampling sites are located in Waitemata Harbour (Meola Reef), East Coast Bays, Leigh, Tawharanui and Mokohinau Islands. Sampling frequency = annual for ecology (Meola intertidal in Oct, all subtidal reefs in Feb/Mar) and 6weekly for sediment. Sampling began in 1998 (not at all sites) and is ongoing, except for Leigh and Mokohinau Islands which have not been sampled since 2010. Number of sites = Meola subtidal (6), intertidal (5), Little Manly, Long Bay, Torbay, Campbells Bay (5 each), Leigh, Tawharanui, Mokohinau Islands (1 each). Note intertidal ecological data was also collected at Long Bay, Torbay, Mairangi Bay and Browns Bay until 2006. Number of replicates = Varies depending on location; Meola, Little Manly, Long Bay, Torbay and Campbells Bay subtidal (7 quadrats + 1 sediment trap per site), Meola intertidal (10 permanent quadrat locations per site). Leigh, Tawharanui, Mokohinau Islands (5 quadrats at 2-4 depth strata (0-3, 4-6, 7-9, 10-15m). Measured variables = Macrofaunal communities (visual observer counts and measures using 1m2 quadrat). Sediment characteristics. Sampling protocol & QA = Internal sampling protocol, University of Auckland laboratories. Uniservices internal QA procedures.
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This is the eighteenth annual report for monitoring of stream habitat and biota (surveys conducted summer and end of winter) to evaluate the effects of activities associated with the harvest of Tairua Forest. Data collection and analysis is described in this report for the winter 2010 and summer 2011 surveys (7 sites). The report incorporates findings from earlier surveys (since 1993) to define the magnitude and duration of the effects of forestry management activities, especially harvesting, on these stream attributes.
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The beach database contains data from surveys of beaches which are used to monitor the population size and length structure of selected shellfish species at various beaches within the inter-tidal zone. Traditionally, these surveys have been done for toheroa (Paphies ventricosa), but have also included cockles (Austrovenus stutchburyi), large wedge shells (Macomona liliana), pipi (Paphies australis), tuatua (Paphies subtriangulata) and sea lettuce (Ulva). Sampling protocol. Predominately, beaches are sampled with transect lines, with samples dug from quadrats along the transect line, and the beach material sieved for shellfish. Sampled data are from 1969. Data collection is ongoing. Sampling frequency: variable. Lat/Long provided for some data. Sampling sites range from Ninety Mile Beach in the north to Te Waewae Bay in the south, including the Bay of Plenty. Sampling methods: core, quadrat, transect