Microbial Iron Uptake Rates in the Subantarctic Southern Ocean Summer

Bioassay data quantifying iron uptake rates by heterotrophic bacteria and phytoplankton in the subantarctic Southern Ocean during summer. The dataset likely contains measurements from light and dark incubations and size-fractionation experiments examining competition and DOC supply effects. It is hosted by the Australian Ocean Data Network and was last updated in July 2026.

Use Cases

• Modeling iron bioavailability in marine ecosystems based on uptake rate measurements.
• Studying light-dependent iron photochemistry based on comparisons of light and dark incubations.
• Analyzing microbial competition for nutrients based on experiments isolating bacteria via size fractionation.
• Investigating the role of dissolved organic carbon in iron cycling as mentioned in the experimental description.

Strengths

• Data is associated with a peer-reviewed publication in The ISME Journal.
• Experiments were conducted in the subantarctic Southern Ocean, a key region for biogeochemical studies.
• The dataset includes results from controlled bioassays manipulating light and microbial community size.

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 the specific summer cruise.

Provenance

Source

Australian Ocean Data Network

Collection Method

Bioassays involving light/dark incubations and size-fractionation pre-incubations.

Time Range

Summer season (specific years unknown).

Freshness

Last updated 2026-07-13 20:33:39.877793; freshness should be verified.

Geography

Subantarctic Southern Ocean.