Twenty-four stations were sampled during the SAZ-Sense cruise in the Southern Ocean south of Tasmania in January-February 2007. The dataset contains abundances of algae, bacteria, viruses, and heterotrophic nanoflagellates, with measurements for grazing and viral lysis of algae. It was collected by the SCIOPS organization on board the RV Aurora Australis.
Use Cases
- Analyze correlations between algae abundance and viral lysis rates across different oceanic zones (SAZ, PFZ).
- Model grazing pressure on algae by heterotrophic nanoflagellates using abundance data from flow cytometry.
- Investigate temporal variation in microbial community structure at the three designated Process Stations sampled over multiple days.
- Compare bacterial and viral abundance to assess potential viral impact on microbial mortality in the Southern Ocean.
Strengths
- Spatial coverage includes 24 sampling stations across a significant area (43°S to 54°S, 140°E to 155°E).
- Temporal sampling at three Process Stations provides repeated measurements over several days.
- Includes measurements for four key microbial groups (algae, bacteria, viruses, heterotrophic nanoflagellates) and two key processes (grazing, viral lysis).
Limitations
- Data is from a single cruise in 2007, limiting temporal scope and modern relevance.
- Sample size is constrained to 24 primary stations, which may not capture full regional heterogeneity.
- Specific row counts, column details, and measurement uncertainties are not provided in the description.
Provenance
- Source
- SCIOPS organization via NASA EarthData.
- Collection Method
- Samples collected via ship-based cruise (RV Aurora Australis), with abundances measured using flow cytometry and processes determined via incubation and dilution methods.
- Time Range
- January - February 2007.
- Freshness
- null
- Geography
- Southern Ocean south of Tasmania, Australia, between 43°S to 54°S and 140°E to 155°E.