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Plankton, a diverse group of aquatic organisms, make Earth livable, regulate aquatic life, and provide benefits to human societies such as access to clean water, food security, and well-being. They also support economies and inspire biotechnological innovations.
Over the last decade, the Southern Ocean has experienced episodes of severe sea ice area decline. Abrupt events of sea ice loss are challenging to predict, in part due to … incomplete understanding of processes occurring at the scale of individual ice floes. Here, we use high-resolution altimetry…
For nearly 3 decades, geodetic Global Navigation Satellite System (GNSS) measurements in Antarctica have provided direct observations of bedrock displacement, which is linked to various geodynamic processes, including plate motion, post-seismic deformation, and glacial isostatic adjustment (GIA).
Antarctica harbors many distinctive features of life, yet much about the diversity and functioning of Antarctica's life remains unknown. Evolutionary histories and functional ecology are well understood only for vertebrates…
Neutron monitors (NMs) are ground-based detectors that are widely used to detect secondary particles produced by the collisions of primary cosmic rays (CRs) and air molecules in the Earth's atmosphere. Bare neutron counters (BCs), operated without the lead producer and polyethylene reflector…
A computationally efficient algorithm to calculate the weighting coefficients required to evaluate derivatives for arbitrary multi-dimensional distributions of points is presented. The iterative algorithm guarantees IEEE 754 64-bit precision (at least 15 significant decimal digits)…
The Kunming-Montreal Global Biodiversity Framework (GBF) calls for a 50% reduction in rates of invasive alien species establishment by 2030. However, estimating changes in rates of introduction and establishment is far from straightforward, particularly on a national scale.
Here, we present the Grym package (Wotherspoon and Maschette, 2020). Designed to work within R (R Core Team, 2020), the Grym was built with the aim to provide a toolbox of functions that replicate the existing core functionality of the GYM software (compiled version 501E; Constable, 2004).
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)…
The annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during April 2020. Based on data from this survey, this paper provides an assessment of mackerel icefish (Champsocephalus gunnari) population structure…
The software platform CASAL (C++ algorithmic stock assessment laboratory) has been used to implement integrated statistical catch-at-age toothfish stock assessments in CCAMLR since 2005. However, CASAL is no longer being developed or maintained.
Australian researchers are undertaking work to inform ongoing discussions in the Committee for Environmental Protection (CEP) on further developing the Antarctic protected area system.
The Southern Ocean Mapping Platform: Nilas is a mapping tool (beta) which displays multiple layers of physical and biogeochemical variables. The data displayed are primarily derived from remotely sense products and updated as source data becomes available.
The contamination of the marine environment surrounding coastal Antarctic research stations remains insufficiently understood in terms of its extent, persistence, and characteristics. We investigated the presence of contaminants in marine sediments near Casey Station…
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.
A method for combining a proportional-hazards survival time model with a bioassay model where the log-hazard function is modelled as a linear or smoothing spline function of log-concentration combined with a smoothing spline function of time is described.
A method for combining a proportional-hazards survival time model with a bioassay model where the log-hazard function is modelled as a linear function of log-concentration combined with a cubic smoothing spline function of time is described.
Passive acoustic tracking of blue whales has been proposed as a key component in a strategy to obtain a circumpolar abundance for Antarctic blue whale as proposed in a project of the IWC Southern Ocean Research Partnership.