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Glacially-influenced sediment drifts in the Rockall Trough
1 January, 1997
Sediment drifts are a major depositional product of bottom-current activity in deep-water settings, particularly on slopes and basin plains within, and adjacent to, continental margins. They commonly form positive features…Read more on Glacially-influenced sediment drifts in the Rockall Trough
An active mantle mechanism for Gondwana breakup
1 January, 1997
Despite over thirty years of plate tectonic theory, the reasons why supercontinents like Gondwana disintegrate into smaller continents and disperse remain enigmatic. Current ideas mostly involve changes in plate-boundary driving…Read more on An active mantle mechanism for Gondwana breakup
Stomach oil and reproductive energetics in Antarctic prions,Pachyptila desolata
1 January, 1997
We studied energy-provisioning rates and energy requirements of nestlings, as well as energy-expenditure rates of adults in Antarctic prions (Pachyptila desolata) on sub-Antarctic Bird Island, South Georgia. Special emphasis was…Read more on Stomach oil and reproductive energetics in Antarctic prions,Pachyptila desolata
The coldwater marine aquarium at the British Antarctic Survey
1 January, 1997 by Lloyd Peck
A low-temperature marineaquarium has been maintained at the British Antarctic Survey(BAS) headquarters in Cambridge for over 15 years. In 1988 acompletely new aquarium system was designed and construct ed toprovide…Read more on The coldwater marine aquarium at the British Antarctic Survey
The Wiley Glacier complex, Antarctic Peninsula: pluton growth by pulsing of granitoid magmas
1 January, 1997
Early Cretaceous gabbro, quartz-diorite-granodiorite, and tonalite-granodiorite plutons of the Wiley Glacier complex, in the Antarctic Peninsula magmatic arc, were emplaced in a zone of syn-magmatic extensional shearing. The oldest component…Differential scanning calorimetry studies on an Antarctic nematode (Panagrolaimus davidi) which survives intracellular freezing
1 January, 1997 by William Block
Differential scanning calorimetry was used to characterize thermal events associated with freezing and melting of suspensions and extracts of Panagrolaimus davidi, an Antarctic nematode which can survive intracellular freezing. Nematode…The status and trends of Antarctic and sub-Antarctic seabirds
1 January, 1997
The third review of the status and trends of Antarctic and sub-Antarctic seabird populations compiled by the Bird Biology Subcommittee of the Scientific Committee on Antarctic Research at the request…Read more on The status and trends of Antarctic and sub-Antarctic seabirds
Ice nucleation activity in a New Zealand alpine cockroach Celatoblatta quinquemaculata (Dictyoptera: Blattidae)
1 January, 1997 by Roger Worland
The New Zealand alpine cockroach Celatoblatta quinquemaculata (Dictyoptera: Blattidae) survives temperatures up to 5°c below its supercooling point (scp) of -5.4°C in summer-acclimated samples. This high Scp suggests that C.…Digenean, monogenean and cestode infection of inshore fish at the South Orkney Islands
1 January, 1997
Notothenioid fish of 3 species - 23 immature Notothenia coriiceps, 4 Gobionotothen gibberifrons and 11 Chaenocephalus aceratus, from the coastal zone at the South Orkney Islands were examined to determine…Read more on Digenean, monogenean and cestode infection of inshore fish at the South Orkney Islands
Zooplankton response to a phytoplankton bloom near South Georgia, Antarctica
1 December, 1996 by Peter Ward
A shelf site near the island of South Georgia was sampled during a spring bloom in January 1994. Chlorophyll a (chl a) values declined from 19 to 6 mg m-3…Read more on Zooplankton response to a phytoplankton bloom near South Georgia, Antarctica
Moult in relation to some aspects of reproduction and growth in swarms of Antarctic krill,Euphausia superba
1 December, 1996 by Jonathan Watkins
In a 14-d period 38 swarms of Antarctic krill,Euphausia superba Dana, were sampled in an area 55.5 x 55.5 km to the southwest of Elephant Island, at the north of…The Antarctic temperature inversion
1 December, 1996
In the interior of the Antarctic ice sheet the surface temperature inversion averages over 25°C in the winter months. The negative buoyancy of the near-surface air drives the katabatic windflow,…The geology of Cape Dubouzet, northern Antarctic Peninsula: continental basement to the Trinity Peninsula Group?
1 December, 1996
Cape Dubouzet is mainly composed of a volcanic-subvolcanic complex of extrusive rhyolitic breccias, a banded rhyolite and a semi-annular body of dacite porphyry rich in xenoliths of metamorphic rocks. Major…High-latitude ionospheric electrodynamics as determined by the assimilative mapping of ionospheric electrodynamics procedure for the conjunctive SUNDIAL/ATLAS 1/GEM period of March 28-29, 1992
1 December, 1996
During the conjunctive SUNDIAL/ATLAS 1/GEM campaign period of March 28–29, 1992, a set of comprehensive data has been collected both from space and from ground. The assimilative mapping of ionospheric…Salmonella enteritidis in Antarctica: zoonosis in man or humanosis in penguins?
1 December, 1996
Imported anthropogenic bacteria may survive the Antarctic winter and introduce new genes into local bacterial communitiesRead more on Salmonella enteritidis in Antarctica: zoonosis in man or humanosis in penguins?
An assessment of the role of the marginal ice zone in the carbon cycle of the Southern Ocean
1 December, 1996 by Eugene Murphy
The dense phytoplankton blooms observed in earlier studies in the Southern Ocean Marginal Ice Zone (MIZ) may not be representative of all regions, so that some previous assessments of the…Environmental conditions and physiological tolerances of intertidal fauna in relation to shore zonation at Husvik, South Georgia
1 November, 1996
South Georgia, an extremely isolated island within the Antarctic Convergence, was covered by an extensive icecap until ~10,000 years ago. In consequence the depauperate intertidal fauna is of recent origin…Microbial diversity and function in Antarctic freshwater ecosystems
1 November, 1996
Freshwater lakes occur through much of Antarctica and are characterized by short food chains dominated by microbes. Comparatively few studies have been made of continental freshwater lakes until recently, with…Read more on Microbial diversity and function in Antarctic freshwater ecosystems
Ovarian development associated with first maturity in three Antarctic channichthyid species
1 November, 1996
It has been known for some time that yolk deposition and final ovarian maturation were prolonged processes for many Antarctic fish. The adolescent phase in three species of channichthyid has…Quantification of invertebrate predation and herbivory in food chains of low complexity
1 November, 1996
Zooplankton grazing impact on algae, heterotrophic flagellates and bacteria, as well as invertebrate predation on herbivorous zooplankton, were investigated in two sub-Antarctic lakes with extremely simple food chains. The two…Read more on Quantification of invertebrate predation and herbivory in food chains of low complexity
Aerial dispersal of lichen soredia in the maritime Antarctic
1 November, 1996
An aerobiological monitoring programme was carried out for over a year on Signy Island, South Orkney Islands, Antarctica. Collections were made using arrays of rotorod samplers at three sites. Lichen…Read more on Aerial dispersal of lichen soredia in the maritime Antarctic
Eukaryotic microbiota in the surface waters and sea ice of the Southern Ocean: aspects of physiology, ecology and biodiversity in a ‘two-phase’ ecosystem
1 November, 1996 by Eugene Murphy, Raymond Leakey
The Southern Ocean provides a habitat for microplankton which is strongly influenced by physical factors. Of these, one of the most important and striking is the formation of sea ice.…Post midnight VLF chorus events, a substorm signature observed at the ground nearL= 4
1 November, 1996 by Mervyn Freeman
Clouds of energetic electrons, injected sporadically into the nightside magnetosphere during substorm expansion phase onsets, can generate VLF whistler mode noise through the gyroresonance instability, which may then be observed…Read more on Post midnight VLF chorus events, a substorm signature observed at the ground nearL= 4
Diversity of Antarctic terrestrial protozoa
1 November, 1996
Heterotrophic protozoa have a global distribution in terrestrial habitats. The functional groups significantly represented are zooflagellates, cillates, gymnamoebae and testate amoebae. Their range extends into the Antarctic zone, but the…The phase relationships of the ionospheric signatures of Pc1 geomagnetic pulsations
1 November, 1996
In this study we consider the phase relationships between the oscillations of various ionospheric signatures associated with Pcl geomagnetic pulsations. Investigations using a simple analytical method and a numerical model,…Read more on The phase relationships of the ionospheric signatures of Pc1 geomagnetic pulsations
Antarctic microbial diversity: the basis of polar ecosystem processes
1 November, 1996
Microorganisms are fundamental to the functioning of Antarctic ecosystems. Although microbial biomass can be immense in Southern Ocean blooms and freshwater cyanobacterial mats, species richness is generally more restricted than…Read more on Antarctic microbial diversity: the basis of polar ecosystem processes
Pioneers of photogrammetry commemorated in Antarctic place-names
1 October, 1996 by Adrian Fox
Unique place-names are essential for scientific fieldwork in Antarctica. This shorter contribution describes how duplication of place-names in British Antarctic Territory has been avoided by the systematic naming of geographically…Read more on Pioneers of photogrammetry commemorated in Antarctic place-names
Microbial dynamics in coastal waters of East Antarctica:bacterial production and nanoflagellate bacterivory
1 October, 1996
Bacterial production and heterotrophic nanoflagellate (HNAN) bacterivory were determined concurrently with measurements of abundance and biomass at weekly intervals between 30 December 1993 and 11 February 1994 at a shallow,…Abundance of gelatinous carnivores in the nekton community of the Antarctic Polar Frontal Zone in summer 1994
1 October, 1996 by Paul Rodhouse
The species composition, abundance, vertical distribution, biovolume and carbon content of gelatinous nekton in the Antarctic Polar Frontal Zone are described from a series of RMT25 hauls collected from a…Ice shelf basal melting at the grounding line, measured from seismic observations
1 October, 1996 by Andy Smith
Analysis of seismic data provides a new technique to measure basal melting of an ice shelf close to the grounding line. Internal reflections have been observed within the ice on…Read more on Ice shelf basal melting at the grounding line, measured from seismic observations
The foraging behaviour and energetics of wandering albatrosses brooding chicks
1 September, 1996
The energy expenditure of ten (five male, five female) wandering albatrosses (Diomedea exulans Linnaeus 1758) brooding chicks on Bird Island, South Georgia, was measured using doubly-labelled water. At-sea foraging behaviour…Read more on The foraging behaviour and energetics of wandering albatrosses brooding chicks
Status of southern elephant seals at South Georgia
1 September, 1996
Approximately 54% of the world population of southern elephant seals (Mirounga leonina) breeds at South Georgia. A partial survey in 1951 and a complete survey in 1985, together with counts…Read more on Status of southern elephant seals at South Georgia
In situ photosynthesis and estimated annual production of the red macroalga Myriogramme mangini in relation to underwater irradiance at Signy Island (Antarctica)
1 September, 1996
For the first time, photosynthesis of Myriogramme mangini (Gain) Skottsberg, one of the dominant red macroalgae in the sublittoral of Signy Island (South Orkney Islands), was studied in situ under…Origin and composition of settling iron aggregates in oligotrophic Sombre Lake, Signy Island, Antarctica
1 September, 1996
Sediment traps were deployed in an oligotrophic, seasonally anoxic maritime Antarctic lake for 15 months. Immediately after the onset of the inflow in spring many iron oxyhydroxide aggregates were collected…The seasonal cycle of phytoplankton, macronutrients, and the microbial community in a nearshore antarctic marine ecosystem
1 September, 1996 by Andrew Clarke, Raymond Leakey
Seawater chlorophyll a concentration (size-fractionated at 20, 2, and 0.2 µm) and temperature have been measured weekly from December 1988 to August 1994 at a nearshore shallow-water station at Signy…A new oxytomid bivalve from the Upper Jurassic – Lower Cretaceous of Antarctica
1 September, 1996 by Alistair Crame
Praeaucellina umbonoradiata gen. et sp. nov. is a small pteriomorph bivalve from the Upper Jurassic-Lower Cretaceous of Antarctica which can be referred to the family Oxytomidae, within the superfamily Monotoidea.…Read more on A new oxytomid bivalve from the Upper Jurassic – Lower Cretaceous of Antarctica
Toward ionospheric tomography in Antarctica: first steps and comparison with dynasonde observations
1 September, 1996
Total electron content (TEC) measurements obtained at two Antarctic stations over nine months beginning early in 1994 have been analysed as a first step to performing ionospheric tomography. Two receiving…A comparison of Antarctic krill Euphausia superba caught by nets and taken by macaroni penguins Eudyptes chrysolophus:evidence for selection?
1 September, 1996 by Jonathan Watkins, Philip Trathan
Using stomach lavage samples from macaroni penguins Eudyptes chrysolophus Brandt breeding at Bird Island, South Georgia and concurrent net samples caught within the penguin foraging range, we examined the potential…Quasi-biennial oscillation effects in the semidiurnal tide of the Antarctic lower thermosphere
1 September, 1996
A continuous 37-year record of the geomagnetic field from Argentine Islands Geomagnetic Observatory at Faraday research station (65°S, 64°W), Antarctica, has been analysed to reveal a 27-month periodicity in the…Krill caught by predators and nets: differences between species and techniques
1 September, 1996 by Philip Trathan
Samples of Antarctic krill collected from 6 seabird species and Antarctic fur seal during February 1986 at South Georgia were compared to krill from scientific nets fished in the area…Read more on Krill caught by predators and nets: differences between species and techniques
Very low- and low-grade metamorphism in the Trinity Peninsula Group (Permo-Triassic) of northern Graham Land, Antarctic Peninsula
1 September, 1996
The Permo-Triassic Trinity Peninsula Group is a widespread, regionally metamorphosed metasedimentary sequence in northern Graham Land, Antarctica, which forms the local ‘basement’ to the mainly Jurassic–Cretaceous Antarctic Peninsula magmatic arc.…The Antarctic First Regional Observing Study of the Troposphere (FROST) Project
1 September, 1996 by John Turner
An account is given of the Antarctic First Regional Observing Study of the Troposphere (FROST) project, which has been organized by the Physics and Chemistry of the Atmosphere Group of…Read more on The Antarctic First Regional Observing Study of the Troposphere (FROST) Project
Mesoscale distribution and population dynamics of Rhincalanus gigas and Calanus simillimus in the Antarctic Polar Open Ocean and Polar Frontal Zone during summer
1 September, 1996 by Philip Trathan, Peter Ward
Two dominant Antarctic copepod species, Rhincalanus gigas and Calanus simillimus, were sampled at stations along a 420 km transect running from Maurice Ewing Bank (50°S, 42°W) towards South Georgia (54°S,…Egg-shell morphology of the Antarctic fish, Notothenia rossii Richardson, and the distribution and abundance of pelagic eggs at South Georgia
1 September, 1996
During winter research cruises to South Georgia (1983 and 1993) fish eggs were abundant in the neuston. Examination of the external sculpturing and the micropyle morphology of the eggs collected…Substantial open-ocean phytoplankton blooms to the north of South Georgia, South Atlantic, during summer
1 September, 1996 by Philip Trathan
Substantial open-ocean phytoplankton blooms in the Antarctic Zone to the northwest of South Georgia, South Atlantic are described. Chlorophyll a, nutrient and physical oceanography data, collected between 2 and 5…Doppler shift pulsations on whistler mode signals from a VLF transmitter
1 September, 1996 by Mark Clilverd
Whistler mode signals from the NAA transmitter (24 kHz) received at Faraday, Antarctica are processed to obtain the Doppler shift at a much higher time resolution than has previously been…Read more on Doppler shift pulsations on whistler mode signals from a VLF transmitter
Acanthocephalan infection of inshore fishes at the South Orkney Islands
1 September, 1996
An examination of notothenioid fish of three species, including 23 immature Notothenia coriiceps Richardson, revealed seven acanthocephalan species, including two Echinorhynchida occurring in the intestine and five Polymorphida in the…Read more on Acanthocephalan infection of inshore fishes at the South Orkney Islands
Microbial dynamics in coastal waters of East Antarctica:herbivory by heterotrophic dinoflagellates
1 August, 1996
Heterotrophic dinoflagellates and their herbivory were quantified at a coastal site in East Antarctica in the vicinity of the Australian Antarctic station of Davis (68° 35' S, 77° 58' E).…The relationship between foraging behaviour and energy expenditure in Antarctic fur seals
1 August, 1996
By using time-depth recorders to measure diving activity and the doubly-labelled water method to determine energy expenditure, the relationship between foraging behaviour and energy expenditure was investigated in nine Antarctic…Diel periodicity of Subantarctic copepods: relationships between vertical migration, gut fullness and gut evacuation rate
1 August, 1996 by Eugene Murphy, Peter Ward
A zooplankton community in the Polar Frontal Zone north of South Georgia was sampled for 5 days in February 1994. Feeding of various copepodite stages of six copepod species was…Late Cretaceous extinction patterns in Antarctica
1 August, 1996 by Alistair Crame
New correlations of marine clastic sedimentary rocks exposed within the James Ross Basin, Antarctica have shown that the mid-to late Cretaceous succession is in excess of 5 km thick. Plotting…Read more on Late Cretaceous extinction patterns in Antarctica
Cephalopods as Prey. I. Seabirds
1 August, 1996
We review quantitative studies of the cephalopod diet of seabirds, with details of all species forming more than 5% by numbers or mass of seabird diets. Although squid are widespread…The surface energy and mass balance at Halley, Antarctica during winter
1 August, 1996 by John King
We present measurements of the components of the energy and mass balance of the snow surface at Halley Research Station, Antarctica. During the winter months, when insolation is small or…Read more on The surface energy and mass balance at Halley, Antarctica during winter
The fish diet of black-browed albatross Diomedea melanophris and grey-headed albatrossD. Chrysostoma at South Georgia
1 August, 1996
The fish component of the diet of black browed and grey-headed albatrosses at South Georgia was investigated by intercepting 155 meals from adults arriving to feed chicks during February 1986…Role as Consumers
1 August, 1996 by Paul Rodhouse
Cephalopods are voracious, versatile predators. They generally have a short life span and a single spawning event followed by death. Populations are subject to dramatic fluctuations and their impact on…Temperature threshold for growth and temperature-dependent weight gain of field-collected Tipula Montana (Diptera: Tipulidae)
1 August, 1996
Tipula montana, an upland tipulid of northern Britain and generally considered a montane species, was collected from the northern heath habitat of Waskerley Common, County Durham. The growth rate of…Energetics: The Costs of Living and Reproducing for an Individual Cephalopod
1 August, 1996 by Andrew Clarke
Cephalopods, like all other animals, have to decide how to allocate resources; maintenance processes, growth of somatic and reproductive tissues, and locomotor activity all have costs. We should like to…Read more on Energetics: The Costs of Living and Reproducing for an Individual Cephalopod
Oribatid mites (Acari: Oribatida) of the maritime Antarctic and Antarctic Peninsula
1 July, 1996 by William Block
Eleven species of oribatid mites are reported from 26 maritime Antarctic islands. The oribatid faunas of Fredriksen, Atriceps (South Orkney Is.), Cockburn, Seymour, Vega, Brabant, Adelaide, Lagoon, Léonie, Horseshoe, Alexander…Read more on Oribatid mites (Acari: Oribatida) of the maritime Antarctic and Antarctic Peninsula
Acoustic targets at South Georgia and the South Orkney Islands during a season of krill scarcity
1 July, 1996 by Jonathan Watkins
Dual frequency (38 and 120 kHz) acoustic surveys of shelf-break regions in the vicinity of the Willis Islands, South Georgia, and Coronation Island, South Orkneys, both in the Atlantic sector…The relation between the size of southern elephant seal mothers, the growth of their pups, and the use of maternal energy, fat, and protein during lactation
1 July, 1996
Pregnant female southern elephant seals vary in size by more than a factor of three when they come ashore to give birth and nurse their pups. Pups are fed exclusively…Antarctic fellfield response to climate change: a tripartite synthesis of experimental data
1 July, 1996
This paper explores the biological consequences of climate change by integrating the results of a tripartite investigation involving fumarole, field manipulation and laboratory incubation experiments. The geographical region for this…A towed geophone system for use in snow-covered terrain
1 July, 1996 by Ed King
A new type of drag cable has been developed, which was successfully used to collect seismic reflection data on an Antarctic ice shelf. Standard geophone elements were encapsulated in polyurethane…Read more on A towed geophone system for use in snow-covered terrain
Characteristics of localized ionospheric disturbances inferred from VLF measurements at two closely spaced receivers
1 July, 1996 by Mark Clilverd
The very low frequency (VLF) NPM signal from Hawaii was recorded at two closely spaced (∼50 km) receivers (located at Palmer and Faraday stations) on the Antarctic Peninsula. Measurements of…Chemotypes of the Antarctic moss Bryum algens delineated by their flavonoid constituents
1 July, 1996
The flavonoid composition of Bryum algens from Antarctica is presented. It is shown that there exist two extreme patterns, with a range of intermediate forms. The patterns range from a…Preliminary investigation of the thermal biosystem of Mount Rittmann fumaroles (northern Victoria Land, Antarctica)
1 June, 1996
The biota and environment of fumarolic ground recently discovered near Mount Rittmann are described. Three patches (about 1 m2 each) of the moss Pohlia nutans were found in a minor…Ducted whistler-mode signals received at two widely spaced locations
1 June, 1996 by Mark Clilverd
Whistler-mode signals from a single VLF transmitter that have propagated in the same duct, have been observed simultaneously at Faraday, Antarctica (65°S, 64°W) and Dunedin, New Zealand (46°S, 171°E). The…Read more on Ducted whistler-mode signals received at two widely spaced locations
Reproduction of Antarctic flowering plants
1 June, 1996 by Peter Convey
Reproductive allocation (reproductive biomass relative to vegetative biomass) and seed production were measured for samples of the two native phanerogams occurring in Antarctica. Material collected on South Georgia (subantarctic), Signy…Variations in the altitude of the F2 peak associated with trough-formation processes
1 June, 1996
A novel approach is described which can help to determine, from ground-based data, which of the possible production mechanisms for the mid-latitude F-region ionospheric trough is dominant during a particular…Read more on Variations in the altitude of the F2 peak associated with trough-formation processes
Mixed fractals and anisotropy in subantarctic marine macroalgae from South Georgia:implications for epifaunal biomass and abundance
1 June, 1996
Fractal dimensions (D) of image perimeters of 4 macroalgae (Macrocystis pyrifera, Desmarestia menziesii, Schizoseris condensata, Palmaria georgica) collected at South Georgia, Southern Ocean were established over a wide scale range.…An experimental study of growth in relation to morphology and shoot water content in maritime Antarctic mosses
1 June, 1996
The dependence of shoot growth and growth form on water availability was studied experimentally in six species of maritime Antarctic moss. Under all conditions the largest growth increments were observed…Establishing a postgraduate qualification in remote health
1 June, 1996
The British Antarctic Survey (BAS) provides medical care for the scientists and support staff working on British scientific bases and research vessels in the Antarctic. The BAS directs significant resources…Read more on Establishing a postgraduate qualification in remote health
Towards resolving multiple recruitment into loliginid fisheries:Loligo gahiin the Falkland Islands fishery
1 June, 1996
Data on size structure and maturity of the commercially exploited Loligo gahi population in Falkland Island waters were collected by the Fisheries Department of the Falkland Islands Government for the…Can high Arctic soil microarthropods survive eleveated summer temperatures?
1 June, 1996 by William Block
1. Tolerance of high summer temperatures was investigated in seven common species of oribatid mite (Acarina) and springtail (Collembola) found in soils associated with dominant vegetation types in West Spitsbergen,…Read more on Can high Arctic soil microarthropods survive eleveated summer temperatures?