Mixotrophic Grazing Responses to Iron and Manganese Limitation in the Southern Ocean

NASA EarthData hosts a research dataset from the ANT LIA project investigating mixotrophic microorganisms in the Southern Ocean. The study examines how grazing behavior and metabolic processes shift under iron and manganese deficiency, using culture studies and transcriptomic analyses. Data was contributed by AMD_USAPDC and is scheduled for an update in January 2026.

Use Cases

• Analyze growth_response data from culture studies to model mixotroph fitness under Fe and Mn limitation.
• Correlate grazing_behavior measurements with transcriptomic data to identify metabolic pathway shifts.
• Use elemental_stoichiometry changes to parameterize nutrient cycling models for the Antarctic ecosystem.
• Examine micronutrient_stress_response features to understand adaptations to extreme polar seasonality.

Strengths

• Data originates from a targeted NASA-funded research project on a specific ecological hypothesis.
• Includes both physiological measurements and transcriptomic analyses for a multi-faceted view.

Limitations

• Specific sample size, row count, and column details are unavailable for assessment.
• Geographic coverage is limited to the Southern Ocean, restricting broader applicability.

Provenance

Source

NASA EarthData via the AMD_USAPDC organization.

Collection Method

Culture studies measuring growth responses, grazing behavior, and elemental stoichiometry, combined with transcriptomic analyses.

Freshness

Scheduled for an update on 2026-01-31.

Geography

Southern Ocean.