Herbicide Effects on Algae Growth and Photosynthesis, Laboratory Experiments 2019

Laboratory experimental data on the effects of seven herbicides on the green algae Desmodesmus asymmetricus. The dataset includes measurements of growth rates from cell density and photosynthetic efficiency via effective quantum yield, collected during 72-hour exposures in 2019. Research was conducted under the NESP TWQ 3.1.5 project by AIMS and JCU.

Use Cases

• Modeling dose-response relationships for herbicides based on growth rate inhibition data.
• Comparing toxicity of Photosystem II and alternative herbicide modes of action on microalgae.
• Calibrating ecological risk assessment frameworks for regulatory purposes using laboratory bioassay results.

Strengths

• Experimental protocols are described in detail, including culture conditions (26 ± 2°C, 12:12 light:dark cycle) and herbicide preparation methods.
• Focuses on seven specific herbicides (e.g., diuron, hexazinone) detected in the Great Barrier Reef catchment, providing targeted ecotoxicology data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from controlled laboratory experiments in 2019; field applicability may require further validation.

Provenance

Source

Australian Ocean Data Network, associated with the NESP TWQ 3.1.5 project by AIMS and JCU.

Collection Method

Laboratory bioassays over 3-day exposures, with growth measured via cell counts and photosynthesis measured via mini-PAM fluorometry.

Time Range

2019

Freshness

Last updated 2026-07-10 14:16:59.458880; freshness should be verified.

Geography

Herbicides selected based on detection in the Great Barrier Reef catchment area; experiments conducted in a laboratory setting.