FRRF Phytoplankton Photosynthetic Efficiency Data from RV L'Astrolabe, October 2003

Fast Repetition Rate Fluorometry (FRRF) data collected by the Australian Ocean Data Network on the RV L'Astrolabe from 21/10/2003 to 26/10/2003. The dataset contains continuous measurements of the maximum photochemical efficiency of photosystem II (Fv/Fm) in phytoplankton, a key indicator of photosynthetic health, taken at one-minute intervals from seawater at 3 meters depth. These parameters can be used to estimate primary production in marine ecosystems.

Use Cases

• Modeling primary production based on Fv/Fm, absorption cross-section, and chlorophyll concentration mentioned in the description.
• Analyzing phytoplankton health responses to environmental variations based on the described sensitivity of Fv/Fm.
• Studying diurnal or spatial patterns in photosynthetic efficiency from the continuous, one-minute interval time-series data.

Strengths

• Data was collected at a high temporal resolution of one-minute intervals.
• Measurements include the widely utilized fluorescence parameter Fv/Fm for assessing phytoplankton photochemical efficiency.
• Seawater sampling from a dedicated clean line at 3 meters depth suggests controlled collection conditions.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic/temporal bias inherent to the single voyage from Hobart to Dumont d'Urville.

Provenance

Source

Australian Ocean Data Network

Collection Method

Continuous FRR fluorescence measurements from the ship's clean seawater line, with dark-adapted samples.

Time Range

21/10/2003 to 26/10/2003

Freshness

Last updated 2026-06-27 15:59:49.562585; freshness should be verified.

Geography

Southern Ocean voyage from Hobart, Australia to Dumont d'Urville, Antarctica.