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Variation in the structure of Antarctic marine benthic macrofaunal communities is being investigated using an artificial substrate which mimics a kelp holdfast environment.
Macquarie Island, located along the Australian-Pacific transform plate boundary~1200 km south of New Zealand, consists of uplifted oceanic crust that still lies within the ocean basin where it formed. A lower crustal and upper mantle section of sheeted dikes…
The International Whaling Commission (IWC) and Southern Ocean Global Ocean Ecosystem Dynamics (SO GLOBEC) program are collaborating on an ecosystem approach to understand baleen whale distributions in Antarctica.
Penguins breeding in the Antarctic have evolved in the most isolated ecosystem in the world. However, recent increase in human activity in the region, both in tourism and science, has led to concern regarding the possible introduction of infectious agents to Antarctic wildlife.
Penguins breeding in the Antarctic have evolved in the most isolated ecosystem in the world, receiving only very minimal exposure to infectious agents from other regions. However, yearly expansion of human activity in the region, seen both in tourism and science…
The first three cruises in the 'year round' Southern Ocean GLOBEC series for 2001-2002 were conducted from March - June 2001. International Whaling Commission researchers participated in all three cruises (Gould LMG 01-03 USA mooring cruise…
For copy of the Abstract, please see authors
Monitoring of background atmospheric CO2 concentration in recent decades has revealed interannual growth rate variations (IAV) that are linked to the El Nino Southern Oscillation (ENSO). However, the nature of this link is not well understood.
Monitoring of background atmospheric CO2 concentration in recent decades has revealed interannual growth rate variations (IAV) that are linked to the El Nino Southern Oscillation (ENSO). However, the nature of this link is not well understood.
Shipboard bottle incubation experiments were performed to investigate the effects of iron, light, and silicate on algal production of particulate dimethylsulfoniopropionate (DMSPp) in the Subantarctic Zone (SAZ) south of Tasmania during March 1998.
The influence of irradiance and iron (Fe) supply on phytoplankton processes … was investigated, north (47S, 142E) and south (54S, 142E) of the Subantarctic Front in … austral autumn (March 1998). At both sites, resident cells exhibited nutrient stress (F v / … Fm 0.3).
During Match 1998 we studied in situ bio-optical parameters along a north-south transect (142?¡E) between 42¡ and 55?¡S. Surface chlorophyll a (chl a) reflected mixed layer chl a concentrations and showed a general decrease with increasing latitude.
Seasonal surface water nitrate and phosphate depletions were calculated for the Subantarctic Zone (SAZ) and Polar Frontal Zone (PFZ) of the Southern Ocean along the World Ocean Circulation Experiment SR3 repeat section south of Tasmania, Australia, and three other transects slightly to the west.
Subantarctic Southern Ocean surface waters in the austral summer and autumn are characterized by high concentrations of nitrate and phosphate but low concentrations of dissolved iron (Fe, ~0.05nM) and silicic acid (Si, <1µM).
Thalli of the lichens Buellia frigida and Xanthoria elegans were collected from five different locations each 5-15 km apart in the Vestfold Hills, Princess Elizabeth Land, eastern Antarctica. A further collection was made from Mawson Station, Mac Robertson Land, eastern Antarctica 660 km away.
We have obtained wide-field thermal infrared (IR) images of the Carina nebula, using the SPIREX/Abu telescope at the … South Pole. Emission from polycyclic aromatic hydrocarbons (PAHs) at 3.29um, a tracer of photodissociation … regions (PDRs)…
ABSTRACT. The exploration of eastern Prydz Bay, East Antarctica, is discussed using temporally and spatially increasing information on the distribution (and size) of Adélie penguin Pygoscelis adeliae colonies as an index of activities undertaken by various nations there.
Over the summer period of December 1997/January 1998, a program of field work was undertaken as part of a research project to develop numerical models of the marine waters into which wastewaters from Casey Station, Antarctica are discharged. Field data collected includes wind speed and direction…
The RAPD technique (Random Amplified Polymorphic DNA) was used to assess the level of genetic diversity in Bryum pseudotriquetrum from Southern Victoria Land, Antarctica. Isolates were collected from two transects…
A detailed study was made of the extent of genetic variation within populations of two moss species, Bryum argenteum and Henediella heimii, from the Garwood Valley in Southern Victoria Land, Antarctica. RAPD technology was used to analyse over 30 clumps of each species…