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Project details
| Title: | Chumbucket: low tech, high return sampling for phytoplankton diversity |
| Id: | 2665 |
| Acronym: | Chumbucket |
| Investigator(s): | Ruth Eriksen
CSIRO Environment [details] |
| Description: | Understanding and document biodiversity of lower trophic levels (phytoplankton and microzooplankton) in Australian marine waters is dependent on complimentary sampling and analysis methods that combined, provide information on diversity, ecology, toxicology and phenology of both rare and dominant species. The voyages selected for this piggy-back project extend the type and coverage of plankton samples beyond our existing methods and programs (e.g. IMOS SOTS, AusCPR and NRS). By sampling the phytoplankton community using a novel method developed onboard RVI for the SEA-MES voyages ("Chumbucket") we will be able to correlate community composition by microscopy with allied measurements planned as part of multiple voyages (AusCPR, eDNA, underway sensors, remote sensing etc). These measurements will contribute to several observation programs in the region, to enhance our understanding of primary producers and grazers, and the broader phytoplankton community composition, in the context of rapid environmental change. |
| Years: | 2026 |
List of surveys that this project was on.
Use [details] link to view survey details (map, reports, metadata etc) including links to download data.
| Survey | Investigator | Description |
|---|---|---|
| IN2026_V03 [details] |
Elizabeth Shadwick | The primary objective is to first deploy a new set of SOTS moorings (SOFS-15 and SAZ-28) and then recover the existing SOTS moorings (SAZ-27). Each of the SOTS moorings deliver to specific aspects of the atmosphere-ocean exchanges: • the SAZ sediment trap mooring collects samples to quantify the transfer of carbon and other nutrients to the ocean interior by sinking particles and investigate their ecological controls. • the Southern Ocean Flux Station (SOFS) mooring measures meteorological and ocean properties important to air-sea exchanges, ocean stratification, waves, currents and biological productivity and ecosystem structure. Water samples are collected for more detailed nutrient and plankton investigations after recovery. Ancillary work will obtain supporting information on atmospheric and oceanographic conditions using CTD casts, and underway measurements. 1. Deploy SOFS-15 meteorology/biogeochemistry mooring 2. Deploy SAZ-28 sediment trap mooring 3. Recover SAZ-27 sediment trap mooring 4. CTD sampling (2 cast to 4550m, 2 to 600m) at the SOTS site, including collecting samples for nutrients, oxygen, dissolved inorganic carbon, alkalinity, and eDNA analyses 5. Ship meteorological observations at SOFS buoys for comparisons 6. Deployment of 2 x Argo Floats ( 1 at the nominal SOTS site, and one closer to Tasmania, in water 2000m deep, on return transit). 7. Underway air and water sampling and sensor measurements, including bio-optics and bioacoustics 8. CPR and Triaxus Note: The objectives listed above are not the priority ranking, because the list is designed for efficiency, using past voyage experience, to achieve all goals. |