Sentinel Shellfish Contaminant Monitoring programme (Auckland Region)

Physical, biological and chemical monitoring of shellfish within the Auckland region for Auckland Council. The objective is to identify contaminants with abnormally high concentrations in shellfish, detect changes in contaminant levels over time, detect differences in contaminant levels between locations, and evaluate the effectiveness of measures aimed at reducing contaminant loads.

Sampling sites are located in Tamaki Estuary, Waitemata Harbour and Manukau Harbour.

Sampling frequency = annual (oysters: Nov/Dec, mussels: Sep to Dec).

Sampling began in 1987 for oystera and 1999 for mussels (not at all sites) and is ongoing.

Number of sites = 11 total: 4 wild-caught sites (oysters) and 7 'deployment' sites (mussels). Extent of site = varies.

Number of replicates = 5 oyster or 5 mussel samples per site, pre-deployment samples are also taken for mussel sites.

Measured variables = Shellfish analysed for metals (regular suite of 6 metals analysed), organics (including PAHs, PCBs and OCP's), condition index.

Sampling protocol & QA = Internal monitoring protocol, has two sections: wild-caught oyster samples, and farmed mussels (sourced from the Coromandel, assembled on rigs in Kelly Tarlton's Underwater World, deployed on site and then retrieved 3 months later by the ARC dive team by boat. QA = Internal, a bulk reference sample is analyzed by the organics lab.

 
Citation proposal
. Sentinel Shellfish Contaminant Monitoring programme (Auckland Region). https://dc.niwa.co.nz:/niwa_dc/srv/api/records/2fe687c4-67c0-41f8-a1b8-a9e5e337a81a
 

Simple

Date
Credit
Auckland Council
Status
On going

  Point of contact

  +64 9 301 0100 
Website
Auckland Council  

Link to the Auckland Council website

Keywords
  • marine estuarine coastal benthic hard ecological chemistry physical visual observation
Specific usage
MEMP

 

Use limitation
Permission required (Auckland Council) to access data/reports.
Access constraints
Restricted
Metadata language
eng
Character set
UTF8
Topic category
  • Environment
Description
Tamaki Estuary, Waitemata Harbour and Manukau Harbour
N
S
E
W


OnLine resource
Point of truth URL of this metadata record  

Point of truth URL of this metadata record

OnLine resource
Link to the Auckland Council technical report webpage  

Link to the Auckland Council technical report webpage

Hierarchy level
Dataset
Statement

Quality assurance was imposed on methods.

Geographic data used NZTM (LINZ). Temporal data were in NZST.

Data collection information: Shellfish samples taken

Origin from which minimum and maximum values are measured: mean sea level

gmd:MD_Metadata

File identifier
2fe687c4-67c0-41f8-a1b8-a9e5e337a81a   XML
Date stamp
2012-08-08T15:00:24
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0

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