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During the summer of 2021, we conducted a comprehensive study on zooplankton communities along East Antarctica (55°E to 80°E) as part of the Trends in Euphausiids off Mawson, Predators, and Oceanography (TEMPO) survey program.
Oxygen isotope ratios (d18O) of foraminifera in marine sediment records have fundamentally shaped our understanding of the ice ages and global climate change. Interpretation of these records has, however, been challenging because they reflect contributions from both ocean temperature and ice volume.
Planktonic Foraminifera are unique paleo-environmental indicators through their excellent fossil record in ocean sediments. Their distribution and diversity are affected by different environmental factors including anthropogenically forced ocean and climate change. Until now…
Gases released by human activity (greenhouse and ozone depleting gases) are responsible for global change. They are long-lived and well-mixed in the atmosphere. The Antarctic regions, remote from industrial and land plant activity are ideally located to measure global changes in the gases.
The 2012 ozone hole was one of the smallest since the late 1980fs due to a warmer than normal mid]lower … stratosphere over the Antarctic region this year. The development and recovery of the 2012 ozone hole will … be shown via a set of metrics based on the Ozone Monitoring Instrument (OMI)…
Adding carbon dioxide (CO2) to the ocean alters the carbonate chemistry and lowers pH, making surface waters more acidic and decreasing the carbonate ions available to calcifiers for calcite and aragonite production.
Anthropogenic carbon dioxide has been accumulating in the … oceans, lowering both the concentration of carbonate ions … and the pH (ref. 1), resulting in the acidification of sea … water.
Paratrochammina minutissima n. sp. is described from … Abraxas and Ace Lakes in the Vestfold Hills, East … Antarctica. The species is characterized by very small size … (120 mm diameter), 4K chambers in the final whorl…
Laboratory experiments suggest that decreased ocean carbonate-ion concentrations due to anthropogenic CO2 will result in reduced calcification rates in marine calcareous organisms.
We present sea surface temperature (SST) records with centennial-scale resolution from the Bay of Plenty, north of New Zealand. Foraminiferal assemblage-based paleo-SST estimates provide a deglacial record of SST … since 16.5 14C ka. Average Holocene SSTs are 15.6C for winter and 20.3C for summer…
Abstract : Well sorted, fine lithic sandstone within the Drygalski Formation at Cape Lockyer on the … southern tip of Heard Island, preserves a diverse terrestrial palynoflora as well as marine diatoms and a few … foraminifera. A combination of these elements suggests a Late Miocene age (10–5 Ma).
The oxygen isotopic record obtained from Globigerina bulloides, Globorotalia inflata, and Neogloboquadrina pachyderma … (s.) was analysed for 5 sediment traps moored in the Southern Ocean and Southwest Pacific. The traps extend from Subtropical … to the Polar Frontal environments…
Between October 2001 and March 2002 six transects were completed at monthly intervals in the Sub-Antarctic Zone … (SAZ) and Inter-Sub-Antarctic Front Zone (ISAFZ)/Polar Frontal Zone (PFZ) in the Southern Ocean south of Australia.
Between November 2001 and March 2002 an Australian/Japanese collaborative study completed six passes of a transect … line in the Seasonal-Ice Zone (south of 621S) along 1401E. Zooplankton samples were collected with a NORPAC net on … 22–28 November, and a Continuous Plankton Recorder on 10…
Life beneath the Antarctic ice shelves is surprisingly abundant and diverse. This study … documents the Holocene seabed community beneath the Amery Ice Shelf, East Antarctica, based on fossil analysis of a 47 cm long sediment core. The surface samples from this core … reveals a rich modern fauna…
The Southern Ocean south of Australia is oceanographically complex, being characterized by double branches of the … Sub-Antarctic Front (SAF), Polar Front (PF) and Southern Antarctic Circumpolar Current (SACCF), in addition to the … Southern Boundary (SB) of the ACC.
The sediment record of the fauna of Ace Lake, a saline meromictic lake in the Vestfold Hills, Antarctica, consists of copepod … eggs, spermatophores and exoskeletal fragments, rotifer and tintinnid loricae, and foraminiferal and folliculinid tests. The … relative abundance of these remains…