Phytoplankton Photosynthetic Health Measurements from a Southern Ocean Voyage

Maximum photochemical efficiency (Fv/Fm) data collected continuously at one-minute intervals from seawater at 3 meters depth. The data were gathered on the RV L'Astrolabe from February 28 to March 4, 2004, during a voyage between Dumont d'Urville and Hobart. These fluorescence parameters are described as having an instant response to environmental changes and can be used to measure primary production.

Use Cases

• Modeling primary production based on fluorescence yields and chlorophyll concentration mentioned in the description
• Assessing phytoplankton community health and stress responses based on variations in Fv/Fm
• Studying the relationship between physical/chemical oceanographic properties and photosynthetic efficiency
• Calibrating or validating satellite-derived ocean color products with in-situ fluorometry data

Strengths

• Data collected at a high temporal resolution of one-minute intervals
• Measurements taken from a continuous seawater supply line at a consistent 3-meter depth
• Includes dark-adapted fluorescence yields using a specific flash sequence protocol

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 temporal and geographic bias inherent to a single five-day voyage

Provenance

Source

Australian Ocean Data Network

Collection Method

Continuous seawater sampling from ship's clean seawater line, measured with Fast Repetition Rate Fluorometry (FRRF)

Time Range

2004-02-28 to 2004-03-04

Freshness

Last updated 2026-06-27 21:33:56.232954; freshness should be verified

Geography

Southern Ocean voyage between Dumont d'Urville, Antarctica, and Hobart, Australia