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Nutrients analysis

Nutrients are sampled once per month on the Tiahura radiale since 2008.
Access the data

Sampling

Triplicata sampling of 125ml of water on:

    • the outer slope (at -20m)
    • the barrier reef (at -0.5m)
    • the fringing reef (at (-0.5m)

 

GPS coordinates

HabitatLatitude (WGS84)Longitude (WGS84)
Outer slope17°28.995'S149°54.071'Wconversion DM/DMS
Barrier reef17°29.178'S149°54.051'Wconversion DM/DMS
Fringing reef17°29.376'S149°54.055'Wconversion DM/DMS

 

Analysed nutrients

  • Phosphate (P2O5) (µM)
  • Nitrates (NO3) (µM)
  • Nitrites (NO2) (µM)
  • Silice (SiO2) (µM)
  • Ammonium (NH4+) (µM)
Note: -99 in stored data means no data and -98 in Ammonium means < 0,05µM

Analysis method

The analysis are realised at CRIOBE using the Autoanalyser AA3 (SEAL Analytical), by methods described by Aminot & Kérouel, 2007. Before 2013, the analysis were done by CAIRAP.

Literature references
Alain Aminot, Roger Kérouel. Dosage automatique des nutriments dans les eaux marines. Edition Quae, 2007

Calendar

1)  2017-07-25
Moorea - Tiahura
2)  2017-08-21
Cook Islands
3)  2017-08-28
Série Galzin
4)  2017-09-11
Samoa
5)  2017-10-16
Tonga