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Life at Robinson Ridge, located in the Windmill Islands region of East Antarctica, is susceptible to a changing climate. At this site, responses of the vegetation communities and moss-beds have been well researched, but corresponding information for microbial counterparts is still lacking.
US and Australian researchers are collaborating to study how extreme, isolated environments in Antarctica affect health, using this research to develop and test new mental and physical health technologies for astronauts on long-duration space missions.
Marine protected areas (MPAs) are a commonly used management tool to safeguard marine life from anthropogenic impacts, yet their efficacy often remains untested.
Marine protected areas (MPAs) are a commonly used management tool to safeguard marine life from anthropogenic impacts, yet their efficacy often remains untested.
A proof-of-concept study was conducted to explore the viability of automated acoustic detection of upcall vocalisations produced by southern right whales (Eubalaena australis) on their high-latitude Antarctic feeding grounds. The automated acoustic detector used was that of Shiu et al (2020)…
Directional frequency … analysis and recording (DIFAR) sonobuoys can allow real-time acoustic … localization of baleen whales for underwater tracking and remote sensing, but limited availability of hardware and software has prevented wider usage.
In 2001 and 2003 small-scale acoustic surveys of Antarctic krill (Euphausia superba) distribution and abundance were conducted … offshore from an East Antarctic colony of Adelie penguins on Bechervaise Island (671350S, 621490E) that has been monitored for … 15 years.
Flexibility in foraging behaviour and diet are characteristics of many penguin species. While these 2 aspects of foraging ecology are presumably tightly coupled, the connection between … them is rarely examined directly.
Recently, Vergani et al. (2008) examined the … climatic drivers of population dynamics … (weaning mass) and foraging performance … (diet variation) from southern elephant … seals, Mirounga leonina, in the Atlantic sector … of the Southern Ocean.
Diet, and in particular, food quality and quantity … can inXuence the reproductive performance of marine … predators. Also, the diet of specialist predators is often … monitored in programmes that model and manage ecosystems. We examined the diet of Adélie penguins (Pygoscelis … adeliae)…
Adélie penguin (Pygoscelis adeliae) diet is an important indicator of prevailing environmental conditions and … resource availability. In this study, dietary variation within and between years was studied with fatty acid … signature analysis (FASA), stomach content analysis (SCA)…
We investigated whether diet composition determined from stable-isotope analysis … (SIA) was similar to that determined from stomach content analysis for Ad¨¦lie penguins Pygoscelis … adeliae.
We compiled and reviewed 248 cases of reported vessel collisions with small cetaceans worldwide and with large … cetaceans in the Southern Hemisphere. Difficulties were encountered with the comparison of highly variable data in … terms of quality (evidence), sources…
The relationship between Ade´ lie Penguins (Pygoscelis adeliae) and ice is well … established, with sea ice influencing penguin populations through a variety of processes … operating at different spatial and temporal scales.
ABSTRACT: Collisions with vessels are a well-documented conservation problem for some populations of large whales (LW) in the Northern Hemisphere. Less attention has been given to incidents in the Southern Hemisphere or to small cetaceans … (SC) worldwide…
A key factor influencing wildlife responses to … human activity is the degree to which animals have been … previously exposed to human stimuli. On subantarctic … Macquarie Island, gentoo penguins Pygoscelis papua … breed in areas of high and low human activity (on and … off-station, respectively).
For wildlife managers, determining inter-species differences in the behavioral responses of seabirds to visitation can allow … greater efficacy of visitor guidelines. Two key management outcomes for such information include 1)…
The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is bound by … its Article II, 3 to follow an ecosystem approach to management. This approach has been extended to … the application of a precautionary approach in the late 1980s. In our review…
This study examines the molecular-genetic divergence and evolution of Australian aquatic micro-Crustacea Daphnia … and Daphniopsis. The results indicate that species of Daphniopsis are accommodated within the genus Daphnia. Although their phyletic integrity is no longer supported…
Models of variability in Adélie penguin foraging trip durations were constructed and fitted … to data collected at Béchervaise Island over a 12-year period when only natural variation … was known to occur. Variability among trips and penguins was greater in the crèche … stage…
ABSTRACT: Foraging movements of Adélie penguins are constrained both by environmental conditions … (e.g. sea ice cover) and life history factors (e.g. regular offspring provisioning). We describe … within season changes in foraging range…
The foraging behaviour of Adélie penguins Pygoscelis adeliae was studied simultaneously at Shirley Island (SI, 110° E) and at Petrel Island (PI, 140° E) in approximate conjunction with the ship-based krill survey conducted on board the RSV Aurora Australis.
This paper describes the diet and foraging behaviour of Adélie penguins (Pygoscelis adeliae) at Béchervaise Island during 1998-99, a season of low breeding success. Fifty six percent of nests with eggs failed during the three weeks following first hatch. A breeding success of 0.