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Upper Cretaceous echinoids from James Ross Basin, Antarctica
1 January, 2000 by Alistair Crame
New palaeontological collections made from Upper Cretaceous strata exposed within the James RossBasin, Antarctica, include ten echinoid species. Five species are described for the first time from Antarctica, while four…Read more on Upper Cretaceous echinoids from James Ross Basin, Antarctica
Salmonella in sub-Antarctica: low heterogeneity in salmonella serotypes in South Georgian seals and birds
1 January, 2000
The number of human visitors to Antarctica is increasing rapidly, and with it a risk of introducing infectious organisms to native animals. To study the occurrence of salmonella serotypes in…Episodic silicic volcanism in Patagonia and the Antarctic Peninsula: Chronology of magmatism associated with the break-up of Gondwana
1 January, 2000 by Teal Riley
New SHRIMP U–Pb zircon, Rb–Sr whole-rock, and 40Ar–39Ar data are presented for the Jurassic silicic volcanic rocks and related granitoids of Patagonia and the Antarctic Peninsula. U–Pb is the only…Migration of methane sulphonate in Antarctic firn and ice
1 January, 2000 by Robert Mulvaney
We investigate the seasonal relationship of the sulphur-bearing anions methane sulphonate (MSA−) and non-sea-salt sulphate (nssSO42−) in sections of firn and ice cores from the Antarctic Peninsula and Weddell Sea…Read more on Migration of methane sulphonate in Antarctic firn and ice
A method to study bacterioplankton community structure in Antarctic lakes
1 January, 2000 by David Pearce
A method to study bacterioplankton community structure in Antarctic freshwater lake samples is described. Small samples (between 300 and 1000 ml) taken in remote field locations were used for crude DNA…Read more on A method to study bacterioplankton community structure in Antarctic lakes
Geochemistry and tectonic significance of peridotites from the South Sandwich arc-basin system, South Atlantic
1 January, 2000 by Philip Leat
Petrographic and geochemical studies of peridotites from the South Sandwich forearc region provide new evidence for the evolution of the South Sandwich arc–basin system and for the nature of interactions…Growth and tissue mass cycles in the infaunal bivalve Yoldia eightsi at Signy Island, Antarctica
1 January, 2000 by Lloyd Peck
Shell growth in Yoldia eightsi was measured over an austral summer and winter in 1992. In specimens < 12 mm length, growth was not significantly different between summer and winter periods,…The myth of metabolic cold adaptation: oxygen consumption in stenothermal Antarctic bivalves
1 January, 2000 by Alistair Crame, Lloyd Peck
Antarctic marine ectotherms are often described as only being capable of living in a restricted temperature range, i.e. they are stenothermal. However, few data exist demonstrating that for a given…Publications and theses on Antarctic and sub-Antarctic birds, 1995
1 January, 2000
In 1986, the Bird Biology Subcommittee of the Scientific Committee on Antarctic Research (SCAR) Working Group on Biology recommended that a list of recent publications on Antarctic and sub-Antarctic seabirds…Read more on Publications and theses on Antarctic and sub-Antarctic birds, 1995
Publications and theses on Antarctic and sub-Antarctic birds, 1996
1 January, 2000
In 1986, the Bird Biology Subcommittee of the Scientific Committee on Antarctic Research (SCAR) Working Group on Biology recommended that a list of recent publications on Antarctic and sub-Antarctic seabirds…Read more on Publications and theses on Antarctic and sub-Antarctic birds, 1996
Publications and theses on Antarctic and sub-Antarctic birds, 1997
1 January, 2000
In 1986, the Bird Biology Subcommittee of the Scientific Committee on Antarctic Research (SCAR) Working Group on Biology recommended that a list of recent publications on Antarctic and sub-Antarctic seabirds…Read more on Publications and theses on Antarctic and sub-Antarctic birds, 1997
Fossil angiosperm wood: its role in the reconstruction of biodiversity and palaeoenvironment
1 January, 2000
Fossil wood is subject to different taphonomic, sampling and recognition biases in the palaeobotanical record when compared with leaves and palynomorphs. Wood therefore provides a systematically independent source of information…The fossil record of Cunoniaceae: new evidence from Late Cretaceous wood of Antarctica?
1 January, 2000
Fossil angiosperm wood from Upper Cretaceous sediments of Livingston Island and James Ross Island in the northern Antarctic Peninsula region is identified as having the combination of anatomical characters most…Read more on The fossil record of Cunoniaceae: new evidence from Late Cretaceous wood of Antarctica?
The first record of fossil wood of Winteraceae from the Upper Cretaceous of Antarctica
1 January, 2000
Fossil wood of the Winteraceae from the Upper Cretaceous sediments of James Ross Island, Antarctic Peninsula, is described here for the first time. The specimen is characterized by the absence…Read more on The first record of fossil wood of Winteraceae from the Upper Cretaceous of Antarctica
Illicioxylon, an element of Gondwanan polar forests? Late Cretaceous and early Tertiary woods of Antarctica
1 January, 2000
The Late Cretaceous and early Tertiary sediments from the northern Peninsula region of Antarctica yield a rich assemblage of fossil wood with well preserved anatomy. Wood specimens of a previously…Evidence for Gondwanan origins for Sassafras (Lauraceae)? Late Cretaceous fossil wood of Antarctica
1 January, 2000
Sassafrasoxylon gottwaldii sp. nov. is a new taxon for fossil wood with a suite of features diagnostic of Sassafras Nees & Eberm. of the Lauraceae. The fossil wood described is…Sedimentation on the continental rise west of the Antarctic Peninsula over the last three glacial cycles
1 January, 2000
The continental rise west of the Antarctic Peninsula includes a number of large sediment mounds interpreted as contourite drifts. Cores from six sediment drifts spanning some 650 km of the…Scotia Arc Acari: antiquity and origin
1 January, 2000 by Peter Convey
The Scotia Arc comprises South Georgia, South Sandwich, South Orkney and South Shetland Islands together with the Antarctic Peninsula. Free-living Acari of the Scotia Arc contain immigrant and endemic elements.…Interferometric analysis of the deformation pattern of the northern Larsen Ice Shelf, Antarctic Peninsula, compared to field measurements and numerical modeling
1 January, 2000
The motion field of the northern Larsen Ice Shelf, Antarctic Peninsula, was analyzed using radar interferometry in combination with field measurements and finite-element model calculations. The ice shelf between Jason…A new Late Middle Cambrian paleomagnetic pole for the Ellsworth Mountains, Antarctica
1 January, 2000
A paleomagnetic study of the late Middle to possibly early Late Cambrian Liberty Hills Formation in the Ellsworth Mountains, Antarctica, reveals a stable magnetization with positive fold and reversal tests.…Read more on A new Late Middle Cambrian paleomagnetic pole for the Ellsworth Mountains, Antarctica
Frost flowers as a source of fractionated sea salt aerosol in the polar regions
1 January, 2000 by Eric Wolff, Victoria Auld
Frost flowers collected from the surface of new sea ice near the Brunt Ice Shelf, Antarctica, show depletion in sulphate and sodium relative to other sea water ions. This is…Read more on Frost flowers as a source of fractionated sea salt aerosol in the polar regions
Ammonium and potassium in snow around an emperor penguin colony
1 January, 2000 by Eric Wolff
Snow samples taken at various distances from the emperor penguin (Aptenodytes forsteri) colony near Halley station were analysed by ion chromatography. Extremely high ammonium concentrations were encountered at the colony…Read more on Ammonium and potassium in snow around an emperor penguin colony
A climatological study of internal gravity waves in the atmospheric boundary layer overlying the Brunt Ice Shelf, Antarctica
1 January, 2000 by John King
Internal gravity waves are frequently observed in stably stratified regions of the atmospheric boundary layer. In order to determine the statistical influence of such waves on the dynamics of the…An initial examination of relationships between the distribution of whales and Antarctic krill Euphausia superba at South Georgia
1 January, 2000
The distribution of whales and krill in two survey boxes north of South Georgia was examined by comparing sightings and underway acoustic data collected as part of a multi-disciplinary research…Fly or die: the role of fat stores in the growth and development of Grey-headed Albatross Diomedea chrysostoma chicks
1 January, 2000
Chicks of albatrosses, like other Procellariiformes, become independent at a mass similar to their parents but during growth attain a peak mass some 30% or more greater, before losing mass…A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas
1 January, 2000 by John King
A simple model of the convective (thermal) internal boundary layer has been developed for climatological studies of air-sea-ice interaction, where in situ observations are scarce and first-order estimates of surface…Stratification and dynamics of microbial loop communities in Lake Fryxell, Antarctica
1 January, 2000
1. Lake Fryxell, situated in the McMurdo Dry Valleys, Antarctica, offers the opportunity to study microbial loop processes in the absence of crustacean zooplankton and other higher organisms. This is the…Read more on Stratification and dynamics of microbial loop communities in Lake Fryxell, Antarctica
FAST observations of ULF waves injected into the magnetosphere by means of modulated RF heating of the auroral electrojet
1 January, 2000 by Richard Horne
Results are reported from an experiment in which the HF high power facility at Tromsø was utilised to inject artificial ULF waves into the magnetosphere by means of modulated heating…Ground-based imaging of magnetospheric boundaries
1 January, 2000
The ionosphere provides an excellent window on magnetospheric and solar wind processes. Often discrete magnetospheric boundaries are imaged in the ionosphere. These boundaries can be detected by a variety of…Read more on Ground-based imaging of magnetospheric boundaries
Ionospheric research 50 years ago, today and tomorrow
1 January, 2000
Fifty years ago the processes responsible for the formation of the ionospheric layers were well established, Appleton, Bartels and Chapman having been in the vanguard of the exploration phase of…Read more on Ionospheric research 50 years ago, today and tomorrow
Some comments on transient and steady-state reconnection at the dayside magnetopause
1 January, 2000 by Michael Pinnock
Reconnection at the dayside magnetopause is the principal method by which energy is transferred from the solar wind into the magnetosphere-ionosphere system. There is still considerable uncertainty as to whether…Read more on Some comments on transient and steady-state reconnection at the dayside magnetopause
Is magnetospheric line radiation man-made?
1 January, 2000 by Mark Clilverd
Magnetospheric line radiation (MLR) events are relatively narrowband VLF signals (∼30 Hz) that sometimes drift in frequency and that have been observed in both ground-based and satellite data sets. We…Temporal properties of magnetospheric line radiation
1 January, 2000 by Mark Clilverd
Magnetospheric line radiation (MLR) events are relatively narrowband VLF signals that sometimes drift in frequency and have been observed in both ground-based and satellite data sets. We present the results…Read more on Temporal properties of magnetospheric line radiation
The effect of snow accumulation on imaging riometer performance
1 January, 2000 by David Maxfield, Mark Clilverd, Michael Rose
In January 1998 an imaging riometer system was deployed at Halley, Antarctica (76°S, 27°W), involving the construction of an array of 64 crossed-dipole antennas and a ground plane. Weather conditions…Read more on The effect of snow accumulation on imaging riometer performance
Temperature adaptations of terrestrial arthropods of the Yenisey Region of Siberia (Asian Ecological Transect)
1 January, 2000 by William Block
Field studies and sampling of terrestrial invertebrates for ecophysiological experiments were undertaken in the summer of 1994 and 1995 in different geographic regions of the Asian Transect (Krasnoyarsk to Karaul)…Factors controlling nitrate in ice cores: Evidence from the Dome C deep ice core
1 January, 2000 by Eric Wolff, Robert Mulvaney
In order to estimate past changes in atmospheric NOx concentration, nitrate, an oxidation product of NOx, has often been measured in polar ice cores. In the frame of the European…Read more on Factors controlling nitrate in ice cores: Evidence from the Dome C deep ice core
Improved air-mass factors for ground-based total NO2 measurements: a sensitivity study
1 January, 2000 by Howard Roscoe
We present an overview of exisiting problems in air-mass factor calculations for NO2 vertical column measurements by UV-visible ground-based spectrometry, Sensitivity studies made using different radiative transfer models allow us…Read more on Improved air-mass factors for ground-based total NO2 measurements: a sensitivity study
Performance of rip-rap shore protection (1992-1998) Rothera Station, Antarctica
1 January, 2000
The British Antarctic Survey (BAS) maintains a research and support station on Rothera Point (67 degrees 34'S, 68 degrees 08'W), located on the southeastern side of Adelaide Island, about 15…Read more on Performance of rip-rap shore protection (1992-1998) Rothera Station, Antarctica
Induced in vitro phagocytosis of the Antarctic starfish Odontaster validus (Koehler 1906) at 0°C
1 January, 2000 by Lloyd Peck
Phagocytosis was studied in vitro using coelomic fluid of the Antarctic starfish Odontaster validus at 0°C. The number of coelomocytes present was determined and the phagocytic activity of the phagocytic…Erosional history of the Transantarctic Mountains deduced from sand grain detrital modes in CRP-2/2A, Victoria Land Basin, Antarctica
1 January, 2000
Dynamic provenance variations are deduced from sand-grain detrital modes in samples obtained from the CRP-2/2A drillcore. Below an important unconformity at 307 metres below sea floor (mbsf), sand grains in…VLF, magnetic and Pi2 substorm signatures
1 January, 2000 by Mervyn Freeman
We carried out a superposed epoch analysis, using a database of substorm chorus events observed at Halley, Antarctica, within an hour of magnetic midnight, to define a set of 123…Plants of extreme habitats in Antarctica
1 January, 2000
An account is given of phanerogams and cryptogams(bryophytes and lichens) growing in extreme habitats in Antarctica. These include high altitude and far southern sites, geothermal sites in volcanic areas, and…I.M. Lamb’s unpublished contribution to Antarctic lichenology
1 January, 2000
An account is given of the unpublished work of Ivan Mackenzie Lamb, who spent almost 35 years working on the taxonomy and ecology of Antarctic lichens. Much of his meticulous…Read more on I.M. Lamb’s unpublished contribution to Antarctic lichenology
Glacio-chemical study spanning the past 2 kyr on three ice cores from Dronning Maud Land, Antarctica: 1. Annually resolved accumulation rates
1 January, 2000 by Robert Mulvaney
For the first time, annually resolved accumulation rates have been determined in central Antarctica by means of counting seasonal signals of ammonium, calcium, and sodium. All records, obtained from three…Glacio-chemical study spanning the past 2 kyr on three ice cores from Dronning Maud Land, Antarctica: 2. Seasonally resolved chemical records
1 January, 2000 by Robert Mulvaney
The ammonium, calcium, and sodium concentrations from three intermediate depth ice cores drilled in the area of Dronning Maud Land, East Antarctica, have been investigated. Since all measurements were performed…Investigations into an unknown organism on the martian meteorite Allan Hills 84001
1 January, 2000
Examination of fracture surfaces near the fusion crust of the martian meteorite Allan Hills (ALH) 84001 have been conducted using scanning electron microscopy (SEM) and atomic force microscopy (AFM) and…Read more on Investigations into an unknown organism on the martian meteorite Allan Hills 84001
A potent greenhouse gas identified in the atmosphere: SF5CF3
1 January, 2000 by Robert Mulvaney
We detected a compound previously unreported in the atmosphere, trifluoromethyl sulfur pentafluoride (SF5CF3). Measurements of its infrared absorption cross section show SF5CF3 to have a radiative forcing of 0.57 watt…Read more on A potent greenhouse gas identified in the atmosphere: SF5CF3
Analytical determination of power-law index for the Chapman et al. sandpile (FSOC) analog for magnetospheric activity – a renormalization-group analysis
1 January, 2000
Recent suggestion and experimental indications that the magnetotail dynamics exhibit self-organized critical behavior have re-motivated interest in sandpile (avalanche) models. Some examples of specific interest for geomagnetic activity have the…Renormalization-group study of a sandpile (FSOC)analog for magnetospheric activity
1 January, 2000
It has been suggested that the dynamics of the magnetotail may exhibit forced and/or self-organized critical behaviour. Recent analysis of experimental data seem to be in concert with this idea.…Read more on Renormalization-group study of a sandpile (FSOC)analog for magnetospheric activity
Macrofossils from CRP-2/2A, Victoria Land Basin, Antarctica
1 January, 2000
CRP-2/2A hole, drilled at 77.006oS and 163.719oE, about 14 km east of Cape Roberts, in the Ross Sea, reached 624 metres below sea floor and recovered a thick Miocene-Oligocene succession…Read more on Macrofossils from CRP-2/2A, Victoria Land Basin, Antarctica
Solar cycle changes in daytime VLF subionospheric attenuation
1 January, 2000 by Mark Clilverd
Observations of field strengths of signals from a number of VLF transmitters, after propagation over long paths in the Earth–ionosphere waveguide, have been used to examine changes in the daytime…Read more on Solar cycle changes in daytime VLF subionospheric attenuation
Modeling the consequences of Antarctic krill harvesting on Antarctic fur seals
1 January, 2000
In terms of the convention governing the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), management advice for the Antarctic krill (Euphausia superba) fishery should take the needs…Read more on Modeling the consequences of Antarctic krill harvesting on Antarctic fur seals
Transport and structure within the Antarctic Circumpolar Current to the north of South Georgia
1 January, 2000 by Eugene Murphy, Philip Trathan, Sally Thorpe
The Antarctic Circumpolar Current (ACC) crosses rugged topography to the north of South Georgia. In this region the subsurface expression of the Polar Front (PF) is generally thought to occur…Quantitative analysis and interpretation of dot echoes observed with a Doppler sodar
1 December, 1999
While some people involved in the acoustic remote sensing field are aware of the possibility of receiving dot echoes from nonatmospheric targets, most of the papers available in the scientific…Read more on Quantitative analysis and interpretation of dot echoes observed with a Doppler sodar
An assessment of operational Antarctic analyses based on data from the FROST Project
1 December, 1999 by Gareth Marshall, John Turner
The quality of the Antarctic operational analyses that were distributed over the Global Telecommunications System during the First Regional Observing Study of the Troposphere project special observing period of July…Read more on An assessment of operational Antarctic analyses based on data from the FROST Project
Investigating possible causes of the observed diurnal variability in Antarctic NOy
1 September, 1999 by Anna Jones, Eric Wolff
The occurence of a diurnal variability in measured total oxidised nitrogen (NOy) was observed at Neumayer, Antarctica, (70 degrees 39'8, 8 degrees 15'W) during a recent summer measurement campaign. Minima…Read more on Investigating possible causes of the observed diurnal variability in Antarctic NOy
Implications of the oceanic thermal skin temperature deviation at high wind speed
1 August, 1999 by John Turner
Extensive oceanographic and atmospheric observations obtained during three independent experiments in the Atlantic Ocean are used to demonstrate the relationship between wind speed and the temperature deviation ΔT, which is…Read more on Implications of the oceanic thermal skin temperature deviation at high wind speed
Exactly solvable sandpile with fractal avalanching
1 June, 1999
A simple one-dimensional sandpile model is constructed which possesses exact analytical solvability while displaying both scale-free behavior and fractal properties. The sandpile grows by avalanching on all scales, yet its…Read more on Exactly solvable sandpile with fractal avalanching
‘Pancake’ electron distributions in the outer radiation belts
1 June, 1999 by Richard Horne
Electron pitch angle distributions sharply peaked at 90 degrees pitch angle were first recorded in the energy range 50 eV < E < 500 eV by the GEOS1 and GEOS2…Read more on ‘Pancake’ electron distributions in the outer radiation belts
Possible latitudinal clines in Antarctic intertidal and subtidal zone communities encrusting ephemeral hard substrata
1 March, 1999 by David Barnes, Rod Arnold
Aim Encrusting faunal communities on rocks were examined from Southern Ocean intertidal and subtidal (6 m) zones to investigate potential change with latitude. Location The site locations were South Georgia…Highly polymorphic microsatellite loci of the heavily fished squid genus Illex (Ommastrephidae).
1 January, 1999 by Paul Rodhouse
Ommastrephid squid of the genus Illex form an important trophic component of large areas of the Atlantic ocean, both as prey for fish, seabirds, whales and other cephalopods, and as…Microsatellite analysis of genetic diversity in the squid Illex argentinus during a period of intensive fishing
1 January, 1999 by Paul Rodhouse
Levels of genetic diversity and population differentiation were examined in temporally (1990 to 1997) and geographically separated samples of the argentine short-finned squid Illex argentines using 7 microsatellite loci. Number…On the SuperDARN autocorrelation function observed in the ionospheric cusp
1 January, 1999 by Michael Pinnock
The SuperDARN radars are proving to be a very powerful experimental tool for exploring solar wind-magnetosphere-ionosphere interactions. They measure the autocorrelation function (ACF) of the transmitted signal backscattered from the…Read more on On the SuperDARN autocorrelation function observed in the ionospheric cusp
Krill-copepod interactions at South Georgia, Antarctica, II. Euphausia superba as a major control on copepod abundance
1 January, 1999 by Peter Ward
Euphausia superba (hereafter 'krill') and copepods are major zooplankton taxa in the Southern Ocean, but there is little information on how they interact. This paper investigates their coincidence across a…Comparative thermal tolerance of herbivorous and predatory beetles on South Georgia, Sub-Antarctic
1 January, 1999 by Roger Worland, William Block
On the sub-Antarctic island of South Georgia the field distributions of two herbivorous perimyloid beetles Hydromedion sparsutum and Perimylops antarcticus overlap with the latter occurring at higher altitudes. An introduced…Localized structure in the cusp and high-latitude ionosphere: a modelling study
1 January, 1999
The ionospheric signature of a flux transfer event (FTE) seen in EISCAT radar data has been used as the basis for a modelling study using a new numerical model of…Read more on Localized structure in the cusp and high-latitude ionosphere: a modelling study
Solution geochemistry and behaviour of major and trace elements during summer in a moss community at Edmonson Point, Victoria Land, Antarctica
1 January, 1999
Physical and chemical characteristics and solution geochemistry of major and trace elements were investigated in an area of volcanic soil colonized by mosses at Edmonson Point (central Victoria Land) during…Evidence for a volcanic rifted margin and oceanic crustal structure for the Falkland Plateau Basin
1 January, 1999
Marine geophysical data from the western Falkland Plateau show strongly lineated magnetic anomalies and a coincident linear gravity high that identify the southeastern margin of a Falkland Islands block as…Falkland Plateau evolution and a mobile southernmost South America
1 January, 1999
Assessment of southwest Gondwana break-up and its implications for regional hydrocarbon prospectivity must now take into account the origin of the southeast margin of the Falkland Islands as a volcanic…Read more on Falkland Plateau evolution and a mobile southernmost South America
Antarctic glacial history from numerical models and continental margin sediments
1 January, 1999
The climate record of glacially transported sediments in prograded wedges around the Antarctic outer continental shelf, and their derivatives in continental rise drifts, may be combined to produce an Antarctic…Read more on Antarctic glacial history from numerical models and continental margin sediments
Do life patterns differ between two Scotia Arc localities? A preliminary investigation of three erect Antarctic bryozoan species
1 January, 1999 by David Barnes
Erect bryozoans are extremely abundant and diverse in polar waters and individual species may span a wide range in latitude and bathymetry. A number of aspects of lifestyle, including polypide…The influence of ice on polar nearshore benthos
1 January, 1999 by David Barnes
Polar benthic communities are subject to a range of disturbance levels from a variety of sources, principal amongst which is ice. This occurs in four main forms: the ice-foot, ice…Read more on The influence of ice on polar nearshore benthos
Annual plankton dynamics in an Antarctic saline lake
1 January, 1999
Summary 1. The plankton dynamics of Ace Lake, a saline, meromictic basin in the Vestfold Hills, eastern Antarctica was studied between December 1995 and February 1997. 2. The lake supported two distinct…Read more on Annual plankton dynamics in an Antarctic saline lake
Wing and primary growth of the Wandering Albatross
1 January, 1999
We investigated the relationship between body mass and the rate and pattern of feather growth of the four outermost primaries of Wandering Albatross (Diomedea exulans) chicks. Maximum growth rates were…Read more on Wing and primary growth of the Wandering Albatross
The diet of white-chinned petrels Procellaria aequinoctialis, Linnaeus 1758, in years of contrasting prey availability at South Georgia
1 January, 1999
The diet of breeding white-chinned petrels was studied during the summers of 1996 and 1998 at South Georgia. Krill abundance/availability was high throughout 1996 but apparently low at the beginning…Influence of sampling protocol on diet determination of gentoo penguins Pygoscelis papua and Antarctic fur seals Arctocephalus gazella
1 January, 1999
The influence of two sampling protocols on diet determination of two marine predators, the gentoo penguin (Pygoscelis papua) and Antarctic fur seal (Arctocephalus gazella), was investigated. The collection of diet…Rhynchonellid brachiopods from the Oligocene of King George Island, West Antarctica
1 January, 1999
Rhynchonellid brachiopods are reported for the first time from the Oberek Cliff Member of the Oligocene Polonez Cove Formation of King George Island, South Shetland Islands, West Antarctica. Rhynchonellids are…Read more on Rhynchonellid brachiopods from the Oligocene of King George Island, West Antarctica
Nitrogenous excretion in the Antarctic plunderfish
1 January, 1999
The nitrogenous excretion rates (total ammonia nitrogen, urea, and primary amines) of plunderfish Harpagifer antarcticus were related significantly to length and to wet mass (mass exponents of 0·94, 1·01, 1·07…Read more on Nitrogenous excretion in the Antarctic plunderfish
Foraging and provisioning in Antarctic fur seals: interannual variability in time-energy budgets
1 January, 1999
This study examined three competing hypotheses to explain how lactating Antarctic fur seals (Arctocephalus gazella) respond to changes in the level of resource availability. Antarctic fur seals have episodic bouts…Heart rate and behaviour of fur seals: implications for measurement of field energetics
1 January, 1999
Archival data loggers were used to collect information about depth, swimming speed, and heart rate in 23 free-ranging antarctic fur seals. Deployments averaged 9.6 ± 5.6 days (SD) and totaled…Read more on Heart rate and behaviour of fur seals: implications for measurement of field energetics
Spatial dynamics of two introduced species of carabid beetles on the sub-Antarctic island of South Georgia
1 January, 1999 by William Block
On the sub-Antarctic island of South Georgia two species of predatory beetle, Trechisibus antarcticus and Oopterus soledadinus (Coleoptera, Carabidae), were accidentally introduced. The colonisation process offers unique opportunities for testing…The shelf break front to the east of the sub-Antarctic island of South Georgia
1 January, 1999 by Eugene Murphy, Philip Trathan
The sub-Antarctic island of South Georgia lies in polar waters to the south of the Polar Front and is influenced by the Weddell Scotia Confluence whose waters reach the island’s…Read more on The shelf break front to the east of the sub-Antarctic island of South Georgia
Late Jurassic tethyan ancestry of Recent southern high-latitude marine isopods (Crustacea, Malacostraca)
1 January, 1999 by Alistair Crame
Isopods are one of the key marine groups that radiated extensively in the southern high-latitude regions, and it is widely assumed that they did so essentially through the Cenozoic era.…Potential for long-distance dispersal of Euphausia crystallorophias in fast current jets
1 January, 1999
The euphausiid Euphausia crystallorophias Holt and Tattersall, 1906 is considered to be a neritic species. It has been found in greatest abundance along the Antarctic continental margins, often in association…Concordance of interannual fluctuations in acoustically estimated densities of Antarctic krill around South Georgia and Elephant Island: biological evidence of same-year teleconnections across the Scotia Sea
1 January, 1999 by Jonathan Watkins
Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas around South Georgia (SG) and Elephant Island (EI) were compared for seven austral summers between 1981 and 1997.…Acoustic estimates of krill density at South Georgia, 1981 to 1998
1 January, 1999 by Jonathan Watkins
Acoustic estimates of densities of Antarctic krill, Euphausia superba, at South Georgia during 11 austral summers between 1981 and 1998 are presented. Krill density at the island fluctuated widely from…Read more on Acoustic estimates of krill density at South Georgia, 1981 to 1998