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Surveillance monitoring is important for detecting variations in species populations in response to natural and anthropogenic environmental changes. For seabirds this typically involves species-specific monitoring at breeding colonies.
Levoglucosan (LEV) and two of its isomers, mannosan (MAN) and galactosan (GAL), are commonly used as biomass burning tracers, however 1,6-anhydro-?-D-glucofuranose (AGF), another isomer derived from biomass burning, is rarely identified or quantified in existing literature.
The rate and extent of global biodiversity change is surpassing our ability to measure, monitor and forecast trends. We propose an interconnected worldwide system of observation networks — a global biodiversity observing system (GBiOS)…
Advances in our modelling capacity of wave–ice interactions are hindered by the limited availability of wave observations in sea ice and, specifically, under a broad range of wave and sea ice conditions.
The Southern Ocean Time Series (SOTS) provides highly temporally resolved observations of the physical, chemical, and biological variability in the upper ocean, as well as the export of particulate organic and inorganic carbon to the ocean interior, in the subantarctic region south of Australia.
Bdelloid rotifers are an important component of the biodiversity of ice-free regions of Antarctica. Despite this, knowledge of how to establish and maintain cultures, and optimal conditions for growth, is limited.
Two hydrographic voyages conducted 56 years apart (in 1963 and 2019) along 110°E in the southeast Indian Ocean reveal significant long-term changes in water mass properties. We focus on physical and biogeochemical changes in Subtropical Water (STW), Subantarctic Mode Water (SAMW)…
Ice shelves affect the stability of ice sheets by supporting the mass balance of ice upstream of the grounding line. Marine ice, formed from supercooled water freezing at the base of ice shelves, contributes to mass gain and affects ice dynamics.
Surface melt on the Antarctic Ice Sheet (AIS) occurs primarily on the low-elevation coastal margins, especially on the Antarctic Peninsula and on the ice shelves surrounding the continent.
A technique has recently been developed for tracking short-term spectral variations in Galactic cosmic rays (GCRs) using data from a single neutron monitor (NM)…
Gravity waves provide a key mechanism for the vertical transport of energy and momentum from the active near-surface weather to the upper reaches of the neutral and ionised atmosphere. Generation mechanisms vary between storms, fronts…
Standing meanders along the Antarctic Circumpolar Current (ACC) have been shown to be regions of elevated eddy variability, meridional heat transport, and vertical exchange. In this study, we investigate the influence of a standing meander south of Australia on air-sea heat fluxes…
In the Subantarctic Southern Ocean, primary productivity is predominantly limited by seasonal changes in light and iron (Fe) availability, shaping the phytoplankton community and impacting the magnitude of the biological carbon pump. However, quantifying the seasonal iron cycle is challenging…
Levoglucosan (LEV) and two of its isomers, mannosan (MAN) and galactosan (GAL), are commonly used as biomass burning tracers, however 1,6-anhydro-?-D-glucofuranose (AGF), another isomer derived from biomass burning, is rarely identified or quantified in existing literature.
Genetic diversity is essential for maintaining healthy populations and ecosystems. Several approaches have recently been … developed to evaluate population genetic trends without necessarily collecting new genetic data. Such "genetic diversity … indicators" enable rapid…
Metals are important nutrients to marine life but may cause toxicity at elevated concentrations. There is uncertainty about how sediment metal concentrations influence benthic biodiversity, in part because metal bioavailability depends on sediment properties.
The large-scale exploitation of whale populations in the whaling era led to the near extirpation of large whales all over the world. This must have had major repercussions for marine ecosystems globally.
settingsOrder Article Reprints … Open AccessReview … Unmanned Aerial Vehicles for Real-Time Vegetation Monitoring in Antarctica: A Review … by Kaelan Lockhart 1,2,*ORCID,Juan Sandino 1,2ORCID,Narmilan Amarasingam 3,4ORCID,Richard Hann 5ORCID,Barbara Bollard 3,4ORCID andFelipe Gonzalez 1…
Iron plays a pivotal role in regulating ocean primary productivity. Iron is supplied from diverse sources such as the atmosphere and the geosphere, and hence iron biogeochemical research has focused on identifying and quantifying such sources of "new" iron. However…
The passive sinking flux of particles, termed the biological gravitational pump (BGP), is an important component of the ocean's biological carbon pump. In addition, carbon-rich particles are actively injected to depth through the diel vertical migration (DVM)…
Genomic adaptation and introgression can occur during the speciation process, enabling species to diverge in their frequencies of adaptive alleles or acquire new alleles that may promote adaptation to environmental changes.
As whales recover from commercial exploitation, they are increasing in abundance in habitats that they have been absent from for decades. However, studying the recovery and habitat use patterns of whales, particularly in remote and inaccessible regions…