Phytoplankton can go through one or two generations (cell divisions) per day and are often eaten almost as fast as they divide, by protozoan grazers.
An important goal of this IIOE-2 voyage is to characterise the physical, chemical and biological properties of the waters and determine how they change from the temperate waters at the southern most stations to the northern most stations in the tropics.
Although inconspicuous, microbes are the most abundant and diverse organisms in the ocean.
During this voyage we are focusing our research efforts on nitrogen in particular, as this element is essential for all life forms on Earth.
Aboard the RV Investigator we are approaching the middle stations along our 110°E line and have proceeded from cool, temperate waters to warmer more subtropical waters.
Travelling the deep water of the south-east Indian Ocean with several daily sonobuoy deployments, the most prevalent acoustic detections by the Jenners so far, have been pygmy blue whale calls.
Deep-sea fishes reside at depths greater than 200 m beyond the effective influence of sunlight for most of the time.
Living in the clear waters of the open ocean is a dangerous business when you are a small swimming organism because there is nowhere to hide from predators.
On our voyage with the RV Investigator, along the 110°E meridian in the south-east Indian Ocean, in addition to filtering very tiny organisms from water samples, we are using a wide variety of nets to capture plankton.
Studying how ocean systems differ in terms of how productivity moves through micro- versus mesozooplankton is a basic approach to characterising their different relative functions in nutrient recycling, trophic transfers and carbon export.
Phytoplankton–the microscopic plants inhabiting the surface lit layers of the ocean are among the most diverse group of micro-organisms inhabiting the planet.
What are these microbes and what are they doing? Onboard RV Investigator a team of microbiologists is addressing these questions using modern molecular methods.
The CSIRO scientists involved in the original International Indian Ocean Expedition during the 1960s described it as a desert.
Log from One Ten East:
The most reliable way we have to track global warming is by measuring the change in temperature in the ocean
WAMSI surveys Shark Bay values to deliver a comprehensive Science Plan to respond to environmental pressures.