Publications matching your search query
Results 1 to 25 of 42
Amphipods play an important role in Southern Ocean trophic chains. Considering the key role of Pacific Ocean and sea ice ecosystems in the Earth system and the growing impact of global environmental change, it is important to collect information on the status of marine amphipod biodiversity.
New edition of the leading resource on the Arctic and Southern Oceans with contributions from the world's experts on sea ice. Sea Ice delivers insights into the very latest understanding of sea ice dynamics, how we measure (and model) its extent, the ecosystems that depend on sea ice…
Newly formed sea ice can incorporate considerable amounts of organic matter including phytoplankton during its freezing and growth. This initial incorporation influences the standing stocks of ice algae, a fundamental component of high-latitude marine ecosystems.
Phytoplankton production controls the transfer of carbon dioxide from the atmosphere into the ocean through the biological carbon pump, facilitating the sequestration of carbon dioxide and thus, contributing to the regulation of global climate. In the Southern Ocean…
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)…
Antarctic sea ice plays an important role in Southern Ocean biogeochemistry and mediating Earth's climate system. Yet our understanding of biogeochemical cycling in sea ice is limited by the availability of relevant data over sufficient temporal and spatial scales.
Insoluble nanoparticles, in the form of aerosols, have significant affects on climate and biogeochemical cycles. Records of these aerosols are essential for understanding paleoclimate forcing and future climate change. While a large body of research exists with respect to mineral dust particles…
Better characterisation of aerosol processes in pristine, natural environments, such as Antarctica, have recently been shown to lead to the largest reduction in uncertainties in our understanding of radiative forcing.
The determination of the conservation status for a species at risk of extinction is based … largely upon consistent change in the population size. In long-lived species, such as seabirds…
Iron is the limiting micronutrient in the Southern Ocean and experiments have … demonstrated that addition of soluble iron to surface waters results in phytoplankton … blooms, particularly by large diatoms. Antarctic krill (Euphausia superba)…
Prediction of the impact of global climate change on marine phytoplankton is fraught with uncertainties. Increasing temperature, enhanced surface stratification, alteration of ocean currents, intensification or weakening of local nutrient upwelling, stimulation of photosynthesis by elevated CO2…
We examine global phylogeography of the two forms of giant petrel Macronectes spp. Although previously … considered to be a single taxon, and despite debate over the status of some populations and the … existence of minimal genetic data (one mitochondrial cytochrome b sequence per form)…
Pre-HEAT is a 20 cm aperture submillimeter-wave telescope with a 660 GHz (450 micron) Schottky diode heterodyne … receiver and digital FFT spectrometer for the Plateau Observatory (PLATO) developed by the University of New South … Wales. In January 2008 it was deployed to Dome A…
PILOT (the Pathfinder for an International Large Optical Telescope) is a proposed Australian/European optical/infrared … telescope for Dome C on the Antarctic Plateau, with target first light in 2012. The telescope is 2.4m diameter, with … overall focal ratio f/10, and a 1 degree field-of-view.
PILOT (the Pathfinder for an International Large Optical Telescope) is a proposed Australian/European optical/infrared … telescope for Dome C on the Antarctic Plateau, with target first light in 2012. The proposed telescope is 2.4m diameter, with overall focal ratio f/10…
We reexamine the relationship between circulation, bathymetry, and surface … chlorophyll in the Southern Ocean, using new high-resolution maps of the frontal structure … of the Antarctic Circumpolar Current (ACC) derived from satellite altimetry.
We filmed Southern Giant Petrels Macronectes giganteus as they pursuit dived on a submerged Weddell Seal Leptonychotes weddellii … carcass.
Selenium is an essential micronutrient but its role in oceanic biology is relatively unknown. Whilst this essentiality has been shown in laboratory work for some marine phytoplankton … species, the concentration, chemical species and incorporation methods are unknown.
HPLC-pigment measurements, Production vs Irradiance and daily primary production experiments were carried out on the Kerguelen Plateau during the KEOPS cruise in January and February 2005. The respective contribution of three phytoplankton size classes, namely micro- (> twenty micron)…
: P vs E experiments determining photosynthetic parameters and daily primary production were carried out east of Kerguelen Island during the KEOPS cruise in January and February 2005. The Kerguelen Plateau region is naturally enriched with iron, while deeper waters (>1000m) nearby may not be.