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Antarctic sea ice is one of the largest biomes on Earth providing a critical habitat for ice algae. Measurements of primary production in Antarctic sea ice remain scarce and an observation-based estimate of primary production has not been revisited in over 30 years.
Antarctic ice-free coastal environments, like the Vestfold Hills (East Antarctica), are shaped by a complex interplay of physical processes. This study synthesizes new data and existing research from the Vestfold Hills across marine, terrestrial and cryosphere science, meteorology, geomorphology…
Newly formed sea ice can incorporate considerable amounts of organic matter including phytoplankton during its freezing and growth. This initial incorporation influences the standing stocks of ice algae, a fundamental component of high-latitude marine ecosystems.
Dense, cold waters formed on Antarctic continental shelves descend along the Antarctic continental margin, where they mix with other Southern Ocean waters to form Antarctic Bottom Water (AABW). AABW then spreads into the deepest parts of all major ocean basins…
Antarctic polynyas are persistent open water areas which enable early and large seasonal phytoplankton blooms. This high primary productivity, boosted by iron supply from coastal glaciers, attracts organisms from all trophic levels to form a rich and diverse community.
Better characterisation of aerosol processes in pristine, natural environments, such as Antarctica, have recently been shown to lead to the largest reduction in uncertainties in our understanding of radiative forcing.
Aerosol observations above the Southern Ocean and Antarctic sea ice are scarce. Measurements of aerosols and atmospheric composition were made in East Antarctic pack ice on-board the Australian icebreaker Aurora Australis during the spring of 2012.
In the Indian Ocean subtropical gyre, historical temperature, salinity, and oxygen data with a median date of … 1962 are compared with a hydrographic section taken at a mean latitude of 328S in October–November 1987.
A baseline for persistent organohalogen compound (POC) accumulation in the Antarctic … keystone species, Antarctic krill (Euphausia superba) has been established for a 50¡ã longitudinal … range of the eastern Antarctic sector. Samples of adult krill…
The geographic distribution, stocks and vertical profiles of phytoplankton of the seasonal ice zone off … east Antarctica were determined during the 2005–2006 austral summer during the Baseline Research … on Oceanography, Krill and the Environment-West (BROKE-West) survey.
As revealed by the CALIPSO orbiting lidar, the intense firestorms that occurred … in southern Australia during February 2009 injected a significant plume of … smoke particles into the lower stratosphere. Over the following weeks…
From a synthesis of recent oceanic observations and paleo-data it is evident that certain species … of giant diatoms including Rhizosolenia spp. Thalassiothrix spp. and Ethmodiscus rex may … become concentrated at oceanic frontal zones and subsequently form episodes of mass flux to the … sediment.
Bacteria play a key role in the world’s oceans, supporting nutrient remineralisation and … mediating carbon transfer. Little is known about annual changes in bacterial concentration, production … and metabolism during the extreme seasonal changes in biological productivity in Antarctic … waters.
Despite being a major pathway for carbon flow in aquatic systems, little is known about … annual changes in microzooplankton grazing in Antarctic waters and its top-down control of phytoplankton.
The influence of biotic and environmental variables on the abundance of virus-like … particles (VLP) and lysogeny was investigated by examining 10 Antarctic lakes in … the Vestfold Hills, Antarctica, in the Austral Spring.