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Two terrestrial Crustacea, Puhuruhuru patersoni (Amphipoda: Talitridae) and Styloniscus otakensis … (Isopoda: Styloniscidae), were discovered on sub-Antarctic Macquarie Island in 1991 and 1992, respectively. Each … species was identified as having been described, and previously only known…
We demonstrate the use of molecular techniques to detect specific prey … consumed by the southern rock lobster ( Jasus edwardsii). A quick and non-lethal … method was used to collect rock lobster faecal material and a molecular protocol … was employed to isolate prey DNA from faecal samples.
Measurements of atmospheric trace gas composition from times before reliable direct observations began in the late 20th century come from air enclosed in polar ice and firn. This presentation will review the evidence for changes in atmospheric CO2…
An extensive Pb isotope ratio survey of ∼100 marine sediment samples from near Casey … Station, East Antarctica has been undertaken. Sediment surface grabs and cores were … collected over nine years between 1997–2006 and, following HF total digestion, were … analysed by magnetic sector ICP-MS.
1. Correlational studies of reproductive success are plagued by difficulty over the direction of … causation. For example, improved reproductive success with age can result from increased … experience or reproductive effort, or selection against low-quality phenotypes that survive poorly.
A breeding population of black-browed albatrosses … has been known to exist at the Ildefonso Archipelago, Chile, for >90 years but the population has never been … censused using scientiWcally defendable methods. To estimate … population size…
Two small-scale Antarctic marine ecosystem surveys were conducted offshore from the Mawson coast ð61266EÞ, in the austral … summers of January 2001 and 2003.
Signals used in mate attraction are predicted to be highly condition dependent, and thus should be … sensitive to environmental contributions to condition. However, the effects of temporal fluctuations in the … environment on sexual selection in long-lived animals have been largely ignored.
We report a long-term study of offspring sex … ratios in the cooperatively breeding superb fairy-wren … Malurus cyaneus. Detailed study of this species had … revealed a suite of potentially strong selection pressures … on the sex ratio. First…
1. Subordinate helpers in cooperative societies may gain both immediate and future benefits, including paternity and territorial inheritance. However, if such opportunities correlate with rank … in the queue, it is unclear why such queues should be stable. 2.
1. Previous studies of Antarctic clonal moss populations using RAPD markers have reported … extraordinarily high levels of genetic variation. This has been claimed to reflect somatic mutation, possibly resulting from elevated UV-B radiation. 2.
Abundance and grazing impacts of krill, salps and herbivorous copepods were investigated in … Antarctic waters along the 1408E meridian, south of Australia, during the summers of 2002 and 2003. North of the Southern Boundary of the Antarctic Circumpolar Current (SB-ACC)…
The geographical distribution of protozoan parasite Cephaloidophora pacifica Avdeev (Order … Eugregarininda) associated with Antarctic krill, Euphausia superba, was examined in samples collected … from the vicinity of the Antarctic Peninsula, near Syowa Station…
The eVect of diVerent light regimes on the … development of sexual maturity and body composition … (carbon, nitrogen, lipid and protein) of Antarctic krill, Euphausia … superba, was studied over 12 weeks under laboratory … conditions.
[1] In September–October 2005, the juxtaposition of low- and high-pressure anomalies at … 130W and 60W, respectively, created strong and persistent northerly airflow across the … West Antarctic Peninsula (WAP). This had a major impact on regional sea ice conditions…
Polynyas are persistent and recurrent regions of open water and/or thin ice or reduced ice concentration, tens to tens of thousands of square kilometers in areal extent…