Our publications
Showing: All publications
Found 14035 items
Exploring Antarctica – a centennial perspective. (Editorial).
1 January, 2005
We are embarked on a decade of celebrations of the national expeditions of what is now termed the Heroic Age. Exploring the Antarctic – the great unknown continent – a…Read more on Exploring Antarctica – a centennial perspective. (Editorial).
Judging quality in science. (Editorial)
1 January, 2005
The joint inspection report by Australia, Peru and the United Kingdom, presented at the last ATCM in Stockholm, contained an unusual recommendation. On the basis of the science that they…Questioning orthodoxy. (Editorial).
1 January, 2005
Recently hearing Fred Singer from the USA lecture on what he perceives to be the uncritical ways in which global change has been attributed to anthropogenic effects reminded me of…Dosidicus gigas fishing grounds in the Eastern Pacific as revealed by satellite imagery of the light-fishing fleet
1 January, 2005 by Claire Waluda, Paul Rodhouse
Dosidicus gigas (the Jumbo flying squid) supports a major fishery in the Eastern Pacific. The commercial fishery consists of a multinational jigging fleet, and the emission of light from these…Phyto- and zooplankton community structure and production around South Georgia (Southern Ocean) during Summer 2001/02
1 January, 2005 by Jonathan Watkins, Michael Meredith, Peter Ward
During Austral summer 2001/02 the spatial distribution of phytoplankton and zooplankton communities and associated production processes were investigated in waters to the north of the island of South Georgia. Nearest…Towards synthesis of solar wind and geomagnetic scaling exponents: a fractional Levy motion model
1 January, 2005 by Mervyn Freeman
Mandelbrot introduced the concept of fractals to describe the non-Euclidean shape of many aspects of the natural world. In the time series context, he proposed the use of fractional Brownian…Temporal and spatial variability in the recruitment of barnacles and the local dominance of Elminius modestus Darwin in SW Ireland
1 January, 2005 by David Barnes
Deployment of processed natural substrata is a common method of investigating early settlement and recruitment processes, but has been under-utilised as a multi-depth method for barnacle study and analysis. Replicate,…Basin evolution during the transition from continental rifting to subduction: Evidence from the lithofacies and modal petrology of the Jurassic Latady Group, Antarctic Peninsula
1 January, 2005
The Jurassic Latady Basin (southern Antarctic Peninsula) developed in a broad rift zone associated with the early stages of Gondwana extension. Early Jurassic sedimentation (~185 Ma) occurred in small, isolated…Efficacy of δ18O data from Pliocene planktonic foraminifer calcite for spatial sea surface temperature reconstruction : comparison with a fully coupled ocean–atmosphere GCM and fossil assemblage data for the mid-Pliocene
1 January, 2005 by Claus-Dieter Hillenbrand
Sea surface temperature (SST) estimates using the δ18O composition of fossil planktonic foraminifer calcite, within the time slice 3.12 to 3.05 Ma (Pliocene, Kaena Subchron – C2An1r) are assessed for…Evaluating the efficacy of planktonic foraminifer calcite δ18O data for sea surface temperature reconstruction for the Late Miocene
1 January, 2005 by Claus-Dieter Hillenbrand
This study examines the efficacy of published δ18O data from the calcite of Late Miocene surface dwelling planktonic foraminifer shells, for sea surface temperature estimates for the pre-Quaternary. The data…Early Carboniferous (Late Tournaisian–Early Viséan) ostracods from the Ballagan Formation, central Scotland, UK
1 January, 2005
The Ballagan Formation (Late Tournaisian–Early Viséan) of central Scotland yields an ostracod fauna of 14 species in ten genera, namely Beyrichiopsis, Cavellina, Glyptolichvinella, Glyptopleura, Knoxiella, Paraparchites, Sansabella, Shemonaella, Silenites and…Marine systems: moving into the genomics era
1 January, 2005
The study of biological systems has been revolutionized by the use of genomic technologies. Most of the knowledge gathered over the last few years refers to terrestrial models. The study…Atmospheric pressure chemical ionisation liquid chromatography/multistage mass spectrometry for assignment of sedimentary bacteriochlorophyll derivatives
1 January, 2005 by Dominic Hodgson
Atmospheric pressure chemical ionisation liquid chromatography/multistage mass spectrometry (APCI-LC/MSn) provides a rapid, on-line method for the assignment of individual bacteriophaeophorbide c and d methyl esters (BPMEs) in complex mixtures. The…Modeling past atmospheric CO2: results of a challenge
1 January, 2005 by Eric Wolff
The models and concepts used to predict future climate are based on physical laws and information obtained from observations of the past. New paleoclimate records are crucial for a test…Read more on Modeling past atmospheric CO2: results of a challenge
Frozen in time
1 January, 2005 by Eric Wolff
Studying ice chemistry may not sound very exciting - after all, isn't ice just frozen water? Almost true, but glaciers and ice sheets, along with snow, contain traces of everything…Understanding the past – climate history from Antarctica
1 January, 2005 by Eric Wolff
Antarctic ice cores have become a unique and powerful resource for studies of climate change. They contain information on past climate, on forcing factors such as greenhouse gas concentrations, and…Read more on Understanding the past – climate history from Antarctica
Signal variability in replicate ice cores
1 January, 2005 by Eric Wolff, Robert Mulvaney
Replicate ice cores have been drilled about 10 m apart for the top 790 m of the ice sheet at Dome C, Antarctica. This provides an opportunity to examine inter-core…Factors that influence freezing in the sub-Antarctic springtail Tullbergia antarctica
1 January, 2005 by Roger Worland
Effects of 12 biotic and abiotic factors on the freezing point of the sub-Antarctic springtail, Tullbergia antarctica, were investigated. Repeated cooling of individual springtails five times resulted in very similar…Read more on Factors that influence freezing in the sub-Antarctic springtail Tullbergia antarctica
Sexual differences in foraging behaviour and diets: a case study of wandering albatrosses
1 January, 2005
Albatrosses and petrels (Procellariiformes) are a group of pelagic seabird species that exhibit a wide range in body mass and some degree of sexual dimorphism (Warham 1990; Croxall 1995). Within…Boluses: an effective method for assessing the proportions of cephalopods in the diet of albatrosses
1 January, 2005
The method of collecting and analyzing boluses to characterize the cephalopod diet of albatrosses has been used in many diet studies. However, no study has validated this method. We compared…Numerical simulations of katabatic jumps in coats land, Antartica
1 January, 2005 by John King
A non-hydrostatic numerical model, the Regional Atmospheric Modeling System (RAMS), has been used to investigate the development of katabatic jumps in Coats Land, Antarctica. In the control run with a…Read more on Numerical simulations of katabatic jumps in coats land, Antartica
Provenance and magmatic-metamorphic evolution of a Variscan island-arc complex: constraints from U-Pb dating, petrology, and geospeedometry of the Kyffhauser crystalline complex, central Germany
1 January, 2005
The Kyffhäuser Crystalline Complex, Central Germany, forms part of the Mid-German Crystalline Rise, which is assumed to represent the Variscan collision zone between the East Avalonian terrane and the Armorican…Radiation belt electron precipitation fluxes associated with lightning
1 December, 2004 by Mark Clilverd
In this study we consider the dependence of precipitation fluxes arising from whistler-induced radiation belt losses on the strength of the associated lightning's return stroke current. As a result of…Read more on Radiation belt electron precipitation fluxes associated with lightning
Investigating radiation belt losses though numerical modelling of precipitating fluxes
3 November, 2004 by Mark Clilverd
It has been suggested that whistler-induced electron precipitation (WEP) may be the most significant inner radiation belt loss process for some electron energy ranges. One area of uncertainty lies in…Read more on Investigating radiation belt losses though numerical modelling of precipitating fluxes
Geophysical Validation of SCIAMACHY NO2 Vertical Columns: Overview of Early 2004 Results.
1 August, 2004 by Howard Roscoe
Following the recommendations drawn after the Commissioning Phase of the ENVISAT satellite in 2002, SCIAMACHY near real time data processors were upgraded to version 5.01 in early 2004. Before public…Thaumelodone and other deep water octopodids from the Southern Ocean
1 July, 2004 by Martin Collins
Recent trawling in the Southern Ocean has yielded an unusual and relatively large collection of deep-sea octopods, comprising four species in two genera. Several deep-sea genera, which are inadequately characterised,…Read more on Thaumelodone and other deep water octopodids from the Southern Ocean
Simultaneous observations of magnetopause flux transfer events and of their associated signatures at ionospheric altitudes
14 June, 2004
An extensive variety of instruments, including Geotail, DMSP F11, SuperDARN, and IMP-8, were monitoring the dayside magnetosphere and ionosphere between 14:00 and 18:00 UT on 18 January 1999. The location…The impact of PMSE and NLC particles on VLF propagation
8 April, 2004 by Mark Clilverd
PMSE or Polar Mesosphere Summer Echoes are a well-known phenomenon in the summer northern polar regions, in which anomalous VHF/UHF radar echoes are returned from heights similar to85 km. Noctilucent…Read more on The impact of PMSE and NLC particles on VLF propagation
An investigation of latitudinal transitions in the SuperDARN Doppler spectral width parameter at different magnetic local times
2 April, 2004 by Gareth Chisham, Mervyn Freeman
Latitudinal transitions from low to high Doppler spectral width in backscatter measured by the Super Dual Auroral Radar Network (SuperDARN) are now routinely used as proxies for the polar cap…Cephalopods of the South Georgia slope
1 April, 2004 by Mark Belchier
During January 2003 the bathymetric distribution of the cephalopod fauna of the South Georgia and Shag Rocks slope (100-900 m) was investigated using a commercial bottom trawl. Forty-four trawl stations…Stratigraphic correlations between the European Project for Ice Coring in Antarctica (EPICA) Dome C and Vostok ice cores showing the relative variations of snow accumulation over the past 45 kyr
1 April, 2004 by Eric Wolff
High-resolution chemistry analysis and electrical measurements performed on two ice core records (European Project for Ice Coring in Antarctica (EPICA) Dome C and Vostok) spanning the last 45 kyr allow…Recommendations for the collection and synthesis of Antarctic Ice Sheet mass balance data
1 January, 2004 by David Vaughan, Richard Hindmarsh, Richard Hindmarsh
Recent unexpected changes in the Antarctic Ice Sheet, including ice sheet thinning, ice shelf collapse and changes in ice velocities, along with the recent realization that as much as one…The temporal evolution of substorm-enhanced whistler-mode waves: relationship between space-based observations, ground-based observations and energetic electrons
1 January, 2004
[1] We examine 22 case studies of CRRES satellite observations of substorm-enhanced whistler-mode waves. These observations were made close to the geomagnetic equator and between 0200 and 0600 MLT. The…A miniature daylight level and activity data recorder for tracking animals over long periods
1 January, 2004 by Vsevolod Afanasyev
The device has a sensor that periodically measures and records the ambient light level. Following retrieval of the device, the light level records are converted into latitudes and longitudes, which…A modelling study of the response of Hatherton Glacier to Ross Ice Sheet grounding line retreat
1 January, 2004 by Richard Hindmarsh, Richard Hindmarsh
The late Holocene retreat of the West Antarctic ice sheet is crucial information for assessing its current dynamics. However, data from this period for parts of the ice sheet where…Diet of grey-headed albatrosses at the Diego Ramirez Islands, Chile: ecological implications
1 January, 2004
The diet of grey-headed albatrosses at Diego Ramirez was analysed and compared to that of the sympatric black-browed albatross. Diet composition was inferred from an analysis of prey hard parts…Electrical structure across a major ice-covered fault belt in northern Victoria Land (East Antarctica)
1 January, 2004 by Fausto Ferraccioli
A Geomagnetic Depth Sounding profile was performed across the glaciated Rennick Graben and the adjacent fault-bounded terranes of northern Victoria Land in East Antarctica. Induction arrows analysis and a 2D…Growth rates of Antarctic krill, Euphausia superba: comparison of the instantaneous growth rate method with nitrogen and phosphorus stoichiometry
1 January, 2004 by Andrew Clarke
Zooplankton growth rates are hard to measure directly, and proxy measurements are desirable to encompass the variety of species and scales of interest. The growth rate hypothesis of stoichiometric theory…Long-term decline in krill stock and increase in salps within the Southern Ocean
1 January, 2004
Antarctic krill ( Euphausia superba) and salps ( mainly Salpa thompsoni) are major grazers in the Southern Ocean(1-4), and krill support commercial fisheries(5). Their density distributions(1,3,4,6) have been described in…Read more on Long-term decline in krill stock and increase in salps within the Southern Ocean
Eight glacial cycles from an Antarctic ice core
1 January, 2004 by Eric Wolff, Robert Mulvaney
The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate…Read more on Eight glacial cycles from an Antarctic ice core
Moving beyond the IGY: the electronic Geophysical Year (eGY) concept
1 January, 2004
The International Geophysical Year (1957–1958) was inspired by the realization that much better and more complete information was needed about the Earth and geospace to understandand manage the complete terrestrial…Read more on Moving beyond the IGY: the electronic Geophysical Year (eGY) concept
Variability of competition at scales of 10(1), 10(3), 10(5), and 10(6) m: encrusting arctic community patterns
1 January, 2004 by David Barnes
Variability in interference competition was studied in benthic marine communities of the arctic and subarctic Atlantic intertidal and shallow subtidal zones. We sampled multiple square-metre quadrats at distances of 10(1).…Natural and plastic flotsam strading in the Indian Ocean
1 January, 2004 by David Barnes
Over long periods of geological time the island rich NE Indian Ocean region has developed to be a region of high marine species richness but in the last few decades…Read more on Natural and plastic flotsam strading in the Indian Ocean
Scale-dependent variation in competitive ability among encrusting Arctic species
1 January, 2004 by David Barnes
Finding evidence for climate change in the sea has been less easy than on land. As ice-loading of nearshore waters (through ice sheet collapses) seems a most likely signal of…Read more on Scale-dependent variation in competitive ability among encrusting Arctic species
Polar pedunculate barnacles piggy-back on pycnogona, penguins, pinniped seals and plastics
1 January, 2004 by David Barnes
There is much concern about the potential for invasive species to enter the only marine region left with no known exotics - the Southern Ocean. Attention has focused on planktonic…Distribution of soluble impurities in cold glacial ice
1 January, 2004 by Eric Wolff
Understanding the microstructure of ice underpins the interpretation of ice-core measurements and many ice-sheet properties. A detailed study of polar snow and ice using scanning electron microscope (SEM) and X-ray…Read more on Distribution of soluble impurities in cold glacial ice
Physical oceanography in the Scotia Sea during the CCAMLR 2000 survey, austral summer 2000
1 January, 2004 by Philip Trathan, Sally Thorpe
In January and February 2000, four ships conducted an extensive hydrographic survey of the Scotia Sea as part of the CCAMLR 2000 Survey. There were 169 CTD stations to at…First report of an entomophthoralean fungus on an arthropod host in Antarctica
1 January, 2004 by Roger Worland
A species of the fungus Neozygites (Zygomycetes: Entomophthorales) is recorded from the Antarctic mite Alaskozetes antarcticus (Acarina: Oribatidales) collected off the west coast of the Antarctic peninsula. The features of…Read more on First report of an entomophthoralean fungus on an arthropod host in Antarctica
Antarctic krill under sea ice: elevated abundance in a narrow band just south of ice edge
1 January, 2004
We surveyed Antarctic krill (Euphausia superba) under sea ice using the autonomous underwater vehicle Autosub-2. Krill were concentrated within a band under ice between 1 and 13 kilometers south of…Links between the structure of an Antarctic shallow-water community and ice-scour frequency
1 January, 2004 by David Barnes, Lloyd Peck
Ice is a major structuring force in marine and freshwater environments at high latitudes. Although recovery from scouring has been quantified in time, the frequency of scouring in the Antarctic…Fecundity of marine planktonic copepods: global rates and patterns in relation to chlorophyll a, temperature and body weight
1 January, 2004
Global rates and patterns of fecundity in marine epipelagic copepods were studied as a function of temperature, body weight of the female and concentration of chlorophyll a. We divided data…Global population structure and taxonomy of the wandering albatross species complex
1 January, 2004
A recent taxonomic revision of wandering albatross elevated each of the four subspecies to species. We used mitochondrial DNA and nine microsatellite markers to study the phylogenetic relationships of three…Read more on Global population structure and taxonomy of the wandering albatross species complex
Effects of density dependence on diel vertical migration of populations of northern krill: a genetic algorithm model
1 January, 2004 by Geraint Tarling
Net and acoustic studies of diel vertical migration (DVM) in krill often show a degree of dispersion around the mean population depth, which becomes greater during night-time. Trade-off models can…Duplicated receptors for VIP and PACAP (VPAC(1)R and PAC(1)R) in a teleost fish, Fugu rubripes
1 January, 2004 by Melody Clark
Two principal groups of receptors orthologous with human PAC(1)R and VPAC(1)R and were identified and characterised at the genomic level in the teleost fish Fugu rubripes. An additional group orthologous…Sustained fast travel by a gray-headed albatross (Thalassarche chrysostoma) riding an Antarctic storm
1 January, 2004 by Richard Phillips
A Gray-headed Albatross (Thalassarche chrysostoma) was recorded traveling, in the course of a foraging trip, at a minimum average ground speed of >110 km h(-1) for similar to9 h with…Foraging strategies of grey-headed albatrosses Thalassarche chrysostoma: integration of movements, activity and feeding events
1 January, 2004 by Janet Silk, Richard Phillips
We identified a range of foraging strategies adopted by grey-headed albatrosses Thalassarche chrysostoma rearing chicks at Bird Island, South Georgia, by simultaneously using satellite telemetry, wet/dry activity recorders and stomach…Amphipod crustacean size spectra: new insights in the relationship between size and oxygen
1 January, 2004 by Lloyd Peck
Oxygen availability limits the maximum potential size attainable in benthic gammaridean amphipods from the suborder to the generic level, while also influencing size within species. In this paper we investigate…Robustness and scaling: key observables in the complex dynamic magnetosphere
1 January, 2004
Plasma transport and energy dissipation in the driven dynamic magnetosphere are intermittent (bursty), and occur on a range of spatiotemporal scales. System observables such as geomagnetic indices, and auroral images,…Read more on Robustness and scaling: key observables in the complex dynamic magnetosphere
A statistical comparison of SuperDARN spectral width boundaries and DMSP particle precipitation boundaries in the nightside ionosphere
1 January, 2004 by Gareth Chisham, Mervyn Freeman
The boundary between quasi-dipolar (closed) geomagnetic field lines and those connected to the interplanetary magnetic field (open) is a key diagnostic for the magnetospheric system. This study presents an HF…Measuring the dayside reconnection rate during an interval of due northward interplanetary magnetic field
1 January, 2004 by Gareth Chisham, Mervyn Freeman, Michael Pinnock
This study presents, for the first time, detailed spatiotemporal measurements of the reconnection electric field in the Northern Hemisphere ionosphere during an extended interval of northward interplanetary magnetic field. Global…Lidar observations of polar mesospheric clouds at Rothera, Antarctica (67.5 degrees S, 68.0 degrees W)
1 January, 2004 by Mark Clilverd
Polar mesospheric clouds (PMC) were observed by an Fe Boltzmann temperature lidar at Rothera (67.5degreesS, 68.0degreesW), Antarctica in the austral summer of 2002-2003.The Rothera PMC are much weaker, less frequent,…Coupling between substorms and ULF disturbances at polar latitudes
1 January, 2004
The trans-Antarctic search-coil magnetometer network has been used to study a possible coupling between the nighttime substorm activity and the behavior of ULF pulsations in the dayside cusp and nightside…Read more on Coupling between substorms and ULF disturbances at polar latitudes
Antarctic genomics
1 January, 2004 by Andrew Clarke, Lloyd Peck, Melody Clark, Peter Convey
With the development of genomic science and its battery of technologies, polar biology stands on the threshold of a revolution, one that will enable the investigation of important questions of…Is there a Universal Temperature Dependence of metabolism?
1 January, 2004 by Andrew Clarke
In a challenging and provocative paper Gillooly et al. (2001) have proposed that the metabolism of all organisms can be described by a single equation, * Q = b0M3/4e−E/kT, where…Read more on Is there a Universal Temperature Dependence of metabolism?
Evolution and diversity of the benthic fauna of the Southern Ocean continental shelf
1 January, 2004 by Andrew Clarke, Alistair Crame
The modern benthic fauna of the Antarctic continental shelf is characterized by the lack of active, skeleton-breaking (durophagous) predators such as crabs, lobsters and many fish, and the dominance in…Read more on Evolution and diversity of the benthic fauna of the Southern Ocean continental shelf
Growth in the limpet Nacella concinna from contrasting sites in Antarctica
1 January, 2004 by Andrew Clarke
Annual shell growth was determined by mark and recapture in the limpet Nacella concinna (Strebel 1908) at two contrasting sites in Antarctica. At Signy Island, 60degreesS, growth was moderately fast,…Read more on Growth in the limpet Nacella concinna from contrasting sites in Antarctica
Impact-shocked rocks – insights into archean and extraterrestrial microbial habitats (and sites for prebiotic chemistry?)
1 January, 2004
Impact-shocked gneiss shocked to greater than 10 GPa in the Haughton impact structure in the Canadian High Arctic has an approximately 25-times greater pore surface area than unshocked rocks. These…A Planetary Park system for Mars
1 January, 2004
The increasing robotic exploration of Mars and eventual human exploration and settlement of that planet threatens to have a significant environmental impact on scientifically important sites and sites of natural…The rights of microbes
1 January, 2004
Over the last forty years, the circle of organisms thought worthy of inclusion within an ethical framework has expanded markedly, in large part in response to Aldo Leopold's 'land ethic'.…The uses of Martian ice
1 January, 2004
In this paper I explore potential relationships between humans and Martian polar ices. Martian ices contain within them multimillion year histories of atmospheric, geological and maybe even biological processes. Polar…Coupling of climate change and biotic UV exposure through changing snow-ice covers in terrestrial habitats
1 January, 2004
During the spring, when ozone depletion at the polar regions is at its maximum and consequently the environmental UV exposure is potentially high, many terrestrial communities are covered in snow…Zones of photosynthetic potential on Mars and the early Earth
1 January, 2004
Ultraviolet radiation is more damaging on the surface of Mars than on Earth because of the lack of an ozone shield. We investigated micro-habitats in which UV radiation could be…Read more on Zones of photosynthetic potential on Mars and the early Earth
Widespread colonization by polar hypoliths
1 January, 2004
High-latitude polar deserts are among the most extreme environments on Earth. Here we describe a large and previously unappreciated habitat for photosynthetic life under opaque rocks in the Arctic and…Cryptoteuthis brevibracchiata: a new species and genus of cirrate octopod (Octopoda: Cirrata)
1 January, 2004 by Martin Collins
A new species and genus of cirrate octopod, Cryptoteuthis brevibracchiata, is described from a single specimen captured at 2274-2300 m in the Porcupine Seabight, northeastern Atlantic. The species possesses characteristics…On the consistent scaling of terms in the sea-ice dynamics equation
1 January, 2004
The standard way in which the sea-ice dynamics equation is used in models assumes that the wind stress and ocean drag do not depend on the sea-ice concentration. It is…Read more on On the consistent scaling of terms in the sea-ice dynamics equation
Pattern and process in marine biogeography: a view from the poles
1 January, 2004 by Alistair Crame
This 436-page book was developed in association with the International Biogeography Society and concentrates explicitly on the fundamental change in historical biogeography, island biogeography and marine biogeography that occurred between…Read more on Pattern and process in marine biogeography: a view from the poles
Maastrichtian stratigraphy of Antarctica
1 January, 2004 by Alistair Crame
Application of a strontium isotope stratigaphy to the Late Cretaceous sedimentary succession of Antarctica has provided the impetus for a comprehensive strati-graphical revision of the terminal Maastrichtian Stage. Both the…Management of Southern Ocean fisheries: global forces and future sustainability
1 January, 2004
The marine resources of the Antarctic region are of global significance. In managing Southern Ocean marine resources, especially fisheries, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR)…Read more on Management of Southern Ocean fisheries: global forces and future sustainability
Seaflux
1 January, 2004
High-resolution surface fluxes over the global ocean are needed to evaluate coupled atmosphere–ocean models and weather forecasting models, provide surface forcing for ocean models, understand the regional and temporal variations…Structural and geochronological constraints of early Ross orogenic deformation in the Pensacola Mountains, Antarctica
1 January, 2004
During end-Neoproterozoic to early Paleozoic time, the southern margin of Gondwana was affected by widespread subduction-related orogenesis. In East Antarctica this event is known as the Ross orogeny, whose manifestation…Life cycle strategies of Northern krill (Meganyctiphanes norvegica) for regulating growth, moult, and reproductive activity in various environments: the case of fjordic populations
1 January, 2004 by Geraint Tarling
Adaptive strategies of two fjord populations of Northern krill (Meganyctiphanes norvegica Sars) were studied and compared with other populations from different climatic and oceanic conditions. The Gullmarsfjord (West Sweden) and…Molecular evidence links cryptic diversification in polar planktonic protists to Quaternary climate dynamics
1 January, 2004
It is unknown how pelagic marine protists undergo diversification and speciation. Superficially, the open ocean appears homogeneous, with few clear barriers to gene flow, allowing extensive, even global, dispersal. Yet,…Macrobenthic migration and its influence on the intertidal diversity dynamics of a meso-tidal system
1 January, 2004 by David Barnes
The link between movement and migration of organisms to patterns of biodiversity may be an important mechanism of biodiversity maintenance at local scales. but is regularly underestimated in marine studies.…Quantifying spatial patterns of intertidal biodiversity: is movement important?
1 January, 2004 by David Barnes
Small-scale patterns of low-, mid- and high-shore intertidal species density, richness and abundance were systematically examined to assess the potential influence of 'mobility' on spatial community dynamics and diversity. Mobile…Read more on Quantifying spatial patterns of intertidal biodiversity: is movement important?
New data on Martialia hyadesi feeding in the Scotia Sea during winter; with emphasis on seasonal and annual variability
1 January, 2004 by Simon Morley
The diet of the seven star flying squid, Martiala hyadesi, from the South Georgia sector of the Scotia Sea was described front stomach contents collected in winter (June) 2001. Diet…Continental slope morphology and sedimentary processes at the mouth of an Antarctic palaeo-ice stream
1 January, 2004
Continental-slope and shelf-edge morphology off Marguerite Bay, western Antarctic Peninsula, is investigated using swath-bathymetric data and parametric sub-bottom profiler records, together with sediment cores. Marguerite Bay has a well-defined cross-shelf…