Marine Sediment Microbial Diversity from Antarctic Biodegradation Experiment

Terminal restriction fragment length polymorphism data tracks microbial community changes in sediment contaminated with synthetic lubricants and diesel. Samples were collected at intervals from 5 weeks to 5 years after deployment near Casey Station in Antarctica. The dataset was produced by the Australian Antarctic Data Centre as part of ASAC project 2672, with a last recorded update in December 2006.

Use Cases

• Analyze t-RFs (fragment lengths) to identify shifts in microbial community composition over a 5-year time series.
• Compare t-RF profiles between treatment groups (e.g., synthetic lubricant vs. biodegradable lubricant) to assess pollutant-specific effects.
• Use the included statistical analysis results to validate significant differences in microbial diversity between experimental treatments.

Strengths

• Time-series data spans five sampling points over a 5-year experimental period.
• Includes statistical analysis results for treatment group comparisons alongside raw fragment data.

Limitations

• Dataset is temporally stale, with no updates recorded since 2006.
• Specific sample count, row count, and column details are unknown.
• Geographic scope is limited to a single bay in the Windmill Islands, Antarctica.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC) via NASA Earthdata.

Collection Method

Field experiment using terminal restriction fragment length polymorphism (t-RFLP) of the 16S rRNA gene on contaminated sediment samples.

Time Range

Samples collected at 5 weeks, 54 weeks, 65 weeks, 2 years, and 5 years after contaminant deployment.

Freshness

2006-12-20

Geography

O'Brien Bay, near Casey Station in the Windmill Islands, Antarctica.