Effects of Climate Change and Diuron on Seagrass Photosystem II Activity

Experimental data from a 2-week study on the tropical seagrass Halophila ovalis, investigating the combined effects of the herbicide diuron and climate change on Photosystem II activity. The dataset contains photosynthetic yield measurements under 5 diuron concentrations and 3 climate scenarios at 4 time points. Data was collected by the Australian Ocean Data Network as part of the NESP TWQ 2.1.6 project.

Use Cases

• Modeling dose-response relationships for diuron toxicity based on the 5 concentration levels.
• Analyzing the interactive effects of temperature and pCO2 on photosynthetic yield under the 3 climate scenarios.
• Training models to predict Photosystem II stress from time-series fluorescence data collected at 0, 2, 7, and 14 days.
• Comparing the stress response between effective quantum yield and maximum quantum yield metrics.

Strengths

• Experimental design includes 3 independent replicate chambers for each of the 5 diuron concentrations and 3 climate scenarios.
• Environmental parameters (pH, salinity, dissolved oxygen) were measured 5 times during the 14-day experiment, and temperature/pCO2 were logged every ten minutes.
• Data includes both effective quantum yield measurements at 4 time points and maximum quantum yield at the experiment's conclusion.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network (AIMS, NESP TWQ 2.1.6)

Collection Method

Controlled laboratory experiment using custom acrylic chambers, peristaltic pumps for diuron delivery, and a programmable logic controller for climate conditions.

Time Range

Data collected during a single 14-day experiment.

Freshness

Last updated 2026-03-19 21:43:12.099767; freshness should be verified.

Geography

Study likely focuses on the tropical seagrass Halophila ovalis; specific collection location is not stated.