Found 13681 items
14 May, 2025
Apex predators play a key role in maintaining ecosystem structure and functions (Ripple et al., 2014; Estes et al., 2016; Enquist et al., 2020). They exert top-down control on food…10 May, 2025 by Josephine Anselin, Keith Nicholls, Pierre Dutrieux
Using radar data from the Beardmore Glacier grounding zone, we image a narrow subglacial channel (300-500 m wide) that reaches a height of 200 m above the ambient ice-shelf draft.…10 May, 2025 by Martin Collins
Large-scale biodiversity assessments and conservation applications require integrated and up-to-date datasets across regions. In the oceans, monitoring is fragmented, which affects knowledge exchange and usage. Among existing monitoring programs, scientific…8 May, 2025 by Pierre Dutrieux
The ice streams feeding the Dotson and Crosson ice shelves are some of the fastest changing in West Antarctica. We use satellite observations to measure the change in ice speed…6 May, 2025 by Peter Convey
Polar regions are heavily impacted by climate change. Yet, vulnerability assessments suggest little concern about heat-related challenges for polar terrestrial ectotherms. These conclusions are based, however, on assumptions and extrapolation…Read more on Polar ectotherms more vulnerable to warming than expected
3 May, 2025 by Emma Woodfield
This study uses the Versatile Electron Radiation Belt code to model Saturn's radiation belt environment, investigating electron acceleration, loss, and transport mechanisms. The simulations consider various physical processes, including convection…Read more on Electron Acceleration and Zebra Stripe Formation in Saturn’s Radiation Belts
2 May, 2025 by Jasmine Lee
Glaciers and glacially influenced ecosystems host unique biodiversity spanning all kingdoms of life, but glaciers are retreating as the global climate warms, threatening specialist species, ecosystem functions and stability. We…Read more on Impacts of deglaciation on biodiversity and ecosystem function
1 May, 2025 by Cameron Trotter, Huw Griffiths, Rowan Whittle
The analysis of image data for benthic biodiversity monitoring is now commonplace within the domain of marine ecology. Whilst advances in imaging technologies have allowed for the collection of vast…Read more on Surveying the deep: A review of computer vision in the benthos
1 May, 2025 by Philip Trathan
Improved methods for identifying species at risk are needed to strengthen climate change vulnerability assessments, as current estimates indicate that up to one million species face extinction due to environmental…1 May, 2025 by David Barnes
Polar ecosystems are on the forefront of climate change, yet large parts of our polar seas remain unexplored. This affects our ability to detect change in these regions and hampers…Read more on Towards a regional baseline of Greenland’s continental shelf seabed biodiversity
1 May, 2025 by Lloyd Peck
We acknowledge the valuable perspectives presented in the letter by Murray et al. in response to our recent publication. They highlight the risk that artificial intelligence (AI) may divide conservation…1 May, 2025 by Beverley Ager
This paper explores the challenge of identifying Antarctic polar research using conventional keyword searches, and examines the way these approaches can be used for benchmarking the bibliometric impact of polar…Read more on Identifying and benchmarking polar research – bibliometric issues and implications
26 April, 2025 by Mervyn Freeman
Substorms have been identified from negative bays in the AL/SML index, which traces the minimum northward ground magnetic deflection at auroral latitudes, produced by enhancements of the westward electrojet. For…25 April, 2025 by Jennifer Freer, Philip Trathan, Sophie Fielding, Victoria Warwick-Evans
The management strategy for the Antarctic krill ( Euphausia superba ) fishery is being revised. A key aim is to spatially and temporally allocate catches in a manner that minimizes…25 April, 2025
Many studies have reported the paradoxical observation of high concentrations of low‐density microplastics (plastic particles < 5 mm) in deep‐sea sediments despite their buoyancy. The incorporation of buoyant microplastics into…25 April, 2025 by Martin Collins, Philip Hollyman, Simeon Hill
Morphological traits reflect an organism’s ecological niche and role within ecosystems. Identifying how traits are associated with diet will therefore improve our understanding of the drivers of community structure. We…24 April, 2025 by Claus-Dieter Hillenbrand, James Kirkham, Kelly Hogan, Robert Larter
Understanding how regime shifts in iceberg calving behavior affect ice shelf stability remains a challenge for numerical models. This is an important question as we consider the fate of the…24 April, 2025
Haplotype-resolved chromosomal reference genomes are increasingly available for many fungi, offering insights into the evolution of pathogenic and symbiotic lifestyles. However, these resources remain scarce for ectomycorrhizal fungi, which play…24 April, 2025 by Scott Hosking
When using machine learning to model environmental systems, it is often a model’s ability to predict extreme behaviors that yields the highest practical value to policy makers. However, most existing…Read more on Reflective error: a metric for assessing predictive performance at extreme events
22 April, 2025 by James Kirkham
Based on a regional 3D seismic data set and a small high‐resolution 3D seismic data set (~40 km 2 ) we have mapped a buried glacially eroded trough on the…21 April, 2025 by Richard Phillips
Although fisheries bycatch is the greatest threat to many migratory marine megafauna, it remains unclear how population exposure to bycatch varies across the global range of threatened species. Such assessments…19 April, 2025 by Kate Hendry, Rhiannon Jones
The polar regions are biologically productive and play a critical role in regional and global biogeochemical cycling. A key nutrient is dissolved silicon, required for the growth of siliceous phytoplankton,…Read more on Insights into silicon cycling from ice sheet to coastal ocean from isotope geochemistry
19 April, 2025
This paper presents new marine geophysical data and radiocarbon dated sediment cores to reconstruct the maximum extent of the Northeast Greenland Ice Stream (NEGIS) during the last glaciation and the…18 April, 2025 by Alison Cleary, Eugene Murphy, Nadine Johnston, Sally Thorpe, Simeon Hill
Antarctic krill (Euphausia superba) are integral to Southern Ocean pelagic ecosystems. Winters with extensive sea ice have been linked to high post-larval krill recruitment the following spring, suggesting that sea…18 April, 2025 by Anna Belcher
Oceanic mesoscale structures, such as eddies, play a fundamental role in ocean circulation, ocean biogeochemical cycles and plankton ecology. They cause lateral and vertical advection, as well as interact with…17 April, 2025 by Michael Meredith
This book presents a state-of-the-art overview of the role that Antarctica and the Southern Ocean play as integral parts of the Earth System. While often characterised as the last great…17 April, 2025 by Jamie Oliver, Michael Meredith
The diverse chapters in this book have each, and collectively, highlighted how Antarctica and the Southern Ocean are key features on Planet Earth, and how they exert a marked influence…17 April, 2025 by Jamie Oliver, Michael Meredith
Awe-inspiring and culturally unique, Antarctica’s remoteness and extreme conditions have long challenged exploration and understanding. Its vast ice sheet conceals secrets of ancient landscapes and harbours clues to Earth’s past…17 April, 2025 by Kevin Hughes, Michael Meredith, Rebecca Peel, Stephen Roberts
This chapter examines the historical legacy of human activities in and around Antarctica and assesses pollutants from the mid-late 20th century onwards that will have lasting impacts, potentially thousands of…17 April, 2025 by Kaitlin Naughten, Michael Meredith
One-third of the world’s ocean surface is located in the Southern Ocean, south of 30°S, encircling the Antarctic continent south of 30°S. The ocean circulation in this vast region has…17 April, 2025 by Mark Clilverd
Geomagnetically induced current (GIC) measurements made at two 3 phase, 3 limb transformers, operating in the Halfway Bush substation in Dunedin, New Zealand have been analyzed during the May 2024…16 April, 2025 by Dominic Hodgson, Teal Riley
Detrital zircon U-Pb and Lu-Hf data from the youngest (upper Permian) sedimentary succession of the Falkland/Malvinas Islands is used to constrain depositional age, provenance and palaeogeography, and test the Natal…15 April, 2025 by Lloyd Peck, Melody Clark
Antarctica is a very cold, isolated continent surrounded by frozen seas, yet these extreme environmental conditions have not restricted life and diversity in the sea. The marine environment is seasonally…15 April, 2025 by Peter Davis
Pine Island Bay, situated in the Amundsen Sea, is renowned for its retreating ice shelves and sea ice variability. Brine rejection from sea ice formation and glacial meltwater exported from…14 April, 2025 by Jasmine Lee, Kevin Hughes, Peter Convey
Antarctica has been subject to direct human activity for a little over 200 years. In recent decades, the combination of sharp increases in human activity and regional climate change, particularly…Read more on Status assessment of non-native terrestrial species in Antarctica
14 April, 2025 by Kate Hendry
The Transpolar Drift (TPD) plays a crucial role in regulating Arctic climate and ecosystems by transporting fresh water and key substances, such as terrestrial nutrients and pollutants, from the Siberian…14 April, 2025 by Katherine Turner
Despite the increased awareness and action towards Equality, Diversity, and Inclusion (EDI), the glaciological community still experiences and perpetuates examples of exclusionary and discriminatory behavior. We here discuss the challenges…11 April, 2025 by Richard Horne
Plasma waves in the magnetosphere scatter electrons, causing them to precipitate into Earth’s atmosphere, imparting their temporal characteristics to diffuse auroras. In a case study of conjugate radar and satellite…10 April, 2025 by Povl Abrahamsen, Rachael Sanders
Two oceanographic moorings were recovered from Royal Research Ship Sir David Attenborough on 24-25 February 2025. Data have been downloaded from instruments and will be backed up on internal BAS…Read more on Recovery of moorings in South Sandwich Trench (Milestone MS10)
9 April, 2025 by Mark Clilverd
The characteristics of very low frequency (VLF) radio wave propagation in the Earth-ionosphere waveguide are determined particularly through dawn and dusk using phase and amplitude measurements of man-made signals propagating…Read more on Ionospheric D Region: Characteristics Near Dawn and Dusk
9 April, 2025 by Markus Frey
Sea salt aerosol (SSaer) significantly impacts aerosol-radiation and aerosol-cloud interactions, and sublimated blowing snow is hypothesized to be an important SSaer source in polar regions. Understanding blowing snow and other…7 April, 2025 by Alexander Brearley, Kate Hendry, Natasha Lucas
Measurements from a robotic underwater vehicle reveal the impacts of meltwater from the giant iceberg A-68A on the properties of the surrounding Southern Ocean. In addition to increasing surface stratification…4 April, 2025 by Povl Abrahamsen, Geraint Tarling, Alexander Brearley, Kate Hendry, Michael Meredith, Natasha Lucas
Ice-sheet mass loss is one of the clearest manifestations of climate change, with Antarctica discharging mass into the ocean via melting or through calving. The latter produces icebergs that can…Read more on Giant iceberg meltwater increases upper-ocean stratification and vertical mixing
4 April, 2025 by Ellen Bowler, Marie Attard, Peter Fretwell, Richard Phillips
The Tristan albatross Diomedea dabbenena is a Critically Endangered species that breeds exclusively on remote islands in the South Atlantic Ocean. Although the population continues to decline, regular on-the-ground monitoring…3 April, 2025 by Peter Convey
Fuel spills pose significant pollution threats to Antarctic terrestrial environments. Biological remediation offers a sustainable solution for restoring these polluted sites. Indigenous microorganisms capable of degrading diesel hydrocarbons at low…2 April, 2025 by Jamie Coleman
Kller whales (Orcinus orca, Linnaeus 1758) are wide-ranging throughout the world's oceans (Forney & Wade, 2006)and can travel over large distances (Dahlheim et al., 2008; Durban & Pitman, 2012). In…1 April, 2025 by Alexander Whittle, Dominic Hodgson
Radiocarbon dating of basal peats has been a key factor in determining minimum ages for deglaciation on sub-Antarctic islands. On Marion Island, peat bogs dominate the landscape below 300 m a.s.l.,…1 April, 2025
In mammals, olfaction plays a key role in social behaviour, for example, in identifying mating opportunities and potential rivals. However, we still have a limited understanding of how social information…1 April, 2025 by Peter Convey
Lichens play important roles in habitat formation and community succession in polar and alpine ecosystems. Despite their significance, the ecological effects of lichen traits remain poorly researched. We propose a…1 April, 2025 by Danielle Buss, Jaume Forcada, Richard Phillips, William Mills
Annual variation in prey availability can influence seabird diets and hence their exposure to pollutants, including mercury (Hg). Among seabirds, those species that scavenge carrion of marine mammals and other…1 April, 2025 by Peter Convey
Rhizosphere microbial communities are intimately associated with plant root surfaces. The rhizosphere microbiome is recruited from the surrounding soil and is known to impact positively on the plant host via…1 April, 2025 by Ingrid Cnossen
Anthropogenic greenhouse gas emissions significantly impact the middle and upper atmosphere. They cause cooling and thermal shrinking and affect the atmospheric structure. Atmospheric contraction results in changes in key atmospheric…Read more on The Need for Better Monitoring of Climate Change in the Middle and Upper Atmosphere
1 April, 2025 by Peter Convey
Polar ecosystems are threatened by non-native plants, and this risk will increase with climate warming. Non-native plant growth depends on Antarctic environmental conditions and substrates, but these influences are poorly…1 April, 2025 by Matthew Lang
Comets tails can reveal information about the local solar wind conditions. They can exhibit various signatures of interactions with the solar wind including bending, developing kinks, and sometimes undergoing tail…1 April, 2025 by Ashley Bennison
Globally, seabirds remove a prey biomass equivalent to commercial fishery landings, suggesting likely competition for resources that will vary spatially and seasonally. Using extensive aerial surveys combined with species-specific energetic…1 April, 2025 by Scott Polfrey
The Radio Neutrino Observatory in Greenland (RNO-G) is the first in-ice radio array in the northern hemisphere for the detection of ultra-high energy neutrinos via the coherent radio emission from…Read more on Instrument design and performance of the first seven stations of RNO-G
1 April, 2025 by Peter Convey
Subaerophytic cyanobacterial diversity is poorly known in Malaysian rainforests generally and at Penang Hill specifically. A new subaerophytic species of cyanobacteria, Desmonostoc cockrellii sp. nov., was isolated from rocky surfaces…31 March, 2025 by Alistair Crame, Jane Francis
The Cretaceous period is particularly well represented by a thick sequence of clastic sedimentary rocks exposed in the Antarctic Peninsula region of western Antarctica. This was an active margin throughout…Read more on Cretaceous stratigraphy of Antarctica and its global significance
31 March, 2025 by Ryan Williams
The Beaufort Gyre (BG) is an important feature of the Arctic Ocean. By accumulating or releasing freshwater, it influences ocean properties both within the Arctic and as far as the…Read more on The Arctic Beaufort Gyre in CMIP6 Models: Present and Future
31 March, 2025
Sporadically genetic material that originates from an organelle genome integrates into the nuclear genome. However it is unclear what processes maintain such integrations over evolutionary time. Recently it was shown…31 March, 2025 by Peter Convey
We report new oribatid records from the western Antarctic Peninsula region obtained during the XXIV and XXVI–XXVIII Ukrainian Antarctic expeditions. Five species (including 2 subspecies) representing five families of oribatid…Read more on New oribatid mite (Acari: Oribatida) records in the Antarctic Peninsula region
28 March, 2025 by Ramesh Karanam, Tracy Moffat-Griffin
Long-term variability and tendencies in monthly mean semidiurnal tide (12-hr) in zonal (U12) and meridional (V12) winds are investigated in northern polar mesosphere and lower thermosphere (MLT; ∼80–100 km) using…28 March, 2025 by Ayat Fekry, George Coombs, Harrison Abbot, Jonathan Smith, Maria Fox, Michael Thorne, Samuel Hall
An algorithm is presented for path-planning in a non-uniform spheroid mesh containing exclusion zones, vector and scalar fields. The mesh models physical environments such as ocean regions, together with a…Read more on Path-Planning on a Spherical Surface with Disturbances and Exclusion Zones
27 March, 2025 by Ryan Williams
February 2022 was an unusually stormy month over Northern Europe, including three extratropical cyclones impacting the United Kingdom and Ireland within a single week. The month also experienced an exceptionally…Read more on Strong polar vortex favoured intense Northern European storminess in February 2022
27 March, 2025
Climate change is modifying the biogeography of many marine species. Squid (Cephalopoda) are important species of the Antarctic pelagic ecosystem, one of the areas most affected by climate change at…26 March, 2025 by Alison Cleary, David Barnes, Lloyd Peck, Melody Clark, Ryan Mathews, Simon Morley
The data presented here was captured around Rothera Point, Adelaide Island on the West Antarctic Peninsula between November 2023, and February 2024. The data was captured as part of a…Read more on Rothera Runway Extension Biodiversity Survey Report 2023-2024
24 March, 2025 by Alison Cleary
Understanding how species survive at their poleward limits of distribution is of interest in species conservation, particularly in light of global warming and predictions of shifting distributions of both predators…21 March, 2025 by Alex Brisbourne, Alvaro Arenas Pingarron, Carlos Martin Garcia, Carl Robinson, Hugh Corr, Tom Jordan, Alvaro Pingarron Arenas
Ground penetrating radar reveals subsurface geometry and ice stratigraphy that contains information about past and present dynamics of the cryosphere. Synthetic Aperture Radar (SAR) is a processing technique based on…20 March, 2025 by Eugene Murphy, Patrick Keith, Simeon Hill
Climate change could irreversibly modify Southern Ocean ecosystems. Marine ecosystem model (MEM) ensembles can assist policy making by projecting future changes and allowing the evaluation and assessment of alternative management…20 March, 2025 by Alex Brisbourne, Andy Smith, Rebecca Schlegel
Basal conditions that facilitate fast ice flow are still poorly understood and their parameterization in ice‐flow models results in high uncertainties in ice‐flow and consequent sea‐level rise projections. Direct observations…20 March, 2025 by Claus-Dieter Hillenbrand, James Smith, James Kirkham, Kelly Hogan, Robert Larter, Svetlana Radionovskaya
Benthic foraminiferal assemblages are useful tools for paleoenvironmental studies but rely on the calibration of live populations to modern environmental conditions to allow interpretation of this proxy downcore. In regions…20 March, 2025 by Scott Hosking, Tom Andersson
Weather prediction is critical for a range of human activities including transportation, agriculture and industry, as well as the safety of the general public. Machine learning is transforming numerical weather…20 March, 2025 by Richard Phillips
Genomic adaptation and introgression can occur during the speciation process, enabling species to diverge in their frequencies of adaptive alleles or acquire new alleles that may promote adaptation to environmental…18 March, 2025 by Richard Horne
We investigate the propagation in the plasmasphere of Very Low Frequency (VLF) electromagnetic waves, such as natural lightning-generated whistler waves and waves produced by active experiments. An active experiment is…18 March, 2025 by Hannah Moulton, Lloyd Peck, Peter Convey, Peter Fretwell
Algal blooms play important roles in physical and biological processes on glacial surfaces. Despite this, their occurrence and impacts within an Antarctic context remain understudied. Here, we present evidence of…Read more on Surface darkening by abundant and diverse algae on an Antarctic ice cap
18 March, 2025 by Dieter Tetzner
The Cordillera Darwin Icefield (CDI) in Tierra del Fuego is one of the largest temperate ice bodies in the Southern Hemisphere. We simulate the climatic energy and mass balance of…15 March, 2025 by Teal Riley
The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat…14 March, 2025 by Peter Convey
A major natural route of dispersal to Antarctica is often assumed to be atmospheric transport, although few studies have documented this in detail. Aerial dispersal to Antarctica is very challenging…14 March, 2025 by Sophie Fielding
Hypoxic (O2 < 60 μmol kg−1) waters are found below 27% of the ocean surface and are predicted to expand in the near future; however, the organic carbon cycle in…
13 March, 2025 by Claire Allen, Dieter Tetzner, Jack Humby, Liz Thomas
Low-concentration insoluble microparticles that are preserved in ice cores offer valuable information for reconstructing past environmental changes. However, their low concentrations and limited sample availability present challenges for extraction and…12 March, 2025 by Claus-Dieter Hillenbrand
Ice sheet models should be able to accurately simulate palaeo ice sheets to have confidence in their projections of future polar ice sheet mass loss and resulting global sea level…Read more on Quantitative sub-ice and marine tracing of Antarctic sediment provenance (TASP v1.0)
10 March, 2025 by Lloyd Peck, Nicholas Barrett
Coastal freshening in the Southern Ocean is expected to increase under projected climate scenarios. As a major environmental stressor, prolonged reduced salinity could pose a significant challenge to Antarctica's endemic…10 March, 2025 by Alice Fremand, Andy Smith, David Vaughan, Ed King, Elena Field, Fausto Ferraccioli, Hugh Corr, Hamish Pritchard, James Kirkham, Peter Fretwell, Richard Hindmarsh, Tom Jordan, Richard Hindmarsh
We present Bedmap3, the latest suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60 °S. Bedmap3 incorporates and…Read more on Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica
10 March, 2025 by Peter Convey
Background and Methods: We assessed the prokaryotic and eukaryotic diversity present in non-vegetated and vegetated soils on King George Island, Maritime Antarctic, in combination with measurements of carbon dioxide fluxes.…10 March, 2025 by David Barnes
Blue Carbon (BC) refers to Nature-Based Solutions in marine environments that aim to reduce greenhouse gases through carbon sequestration using natural processes. Much of the BC focus to date has…Read more on Blue Carbon in an eastern boundary Upwelling Zone – A case study in Namibia
6 March, 2025 by Peter Convey
In the extreme conditions of Antarctica two native vascular plants are present, Colobanthus quitensis (Kunth) Bartl. (Caryophyllaceae) and Deschampsia antarctica Desv. (Poaceae), distributed along the western Antarctic Peninsula and the…6 March, 2025 by Paul Holland, Pierre Dutrieux
The retreat of the Antarctic Ice Sheet is conventionally attributed to increased ocean melting of ice shelves, potentially enhanced by internal instability from grounding lines near retrograde bed slopes. Ocean…6 March, 2025 by Ashley Bennison, David Barnes, Emma Young, Martin Collins, Simon Morley, Stephanie Martin
ENSO (El Niño Southern Oscillation) events are becoming more frequent and more intense as climate change continues. Although ENSO effects are known to propagate into the southwest Atlantic, knowledge of…Read more on Dramatic ENSO related Southwestern Atlantic ecosystem shifts
5 March, 2025 by Nicholas Barrett
Climate change is impacting marine ecosystems worldwide, presenting a significant threat to biodiversity. In the Southern Ocean, organisms are facing increasing challenges due to warming, ocean acidification, reduced sea-ice cover,…4 March, 2025 by Kate Hendry
Subglacial weathering releases biologically important nutrients into meltwaters that have the potential to influence downstream ecosystems. There is a need to understand how accelerated glacial retreat could impact biogeochemical cycling…Read more on High-Resolution Sensors Reveal Nitrate and Dissolved Silica Dynamics in an Arctic Fjord
4 March, 2025 by Elizabeth Boyse
A good understanding of biotic interactions is necessary to accurately predict the vulnerability of ecosystems to climate change. Recently, co-occurrence networks built from environmental DNA (eDNA) metabarcoding data have arisen…4 March, 2025 by Michael Meredith
Phytoplankton play a pivotal role as the primary producers in polar marine ecosystems. Despite evidence suggesting that production rates and loss factors vary from year to year, and thus drive…3 March, 2025 by Aaron Hendry, Mark Clilverd
Previously the geomagnetic Ap index has been used as a proxy to produce empirical energetic electron precipitation (EEP) forcing representations suitable for incorporation into coupled-climate model runs. The long-running Ap…3 March, 2025 by Michael Thorne
For years, a main focus of ecological research has been to better understand the complex dynamical interactions between species which comprise food webs. Using the connectance properties of a widely…1 March, 2025 by Dominic Hodgson, Peter Fretwell, Richard Phillips
Knowledge of the spatial distribution of many polar seabird species is incomplete due to the remoteness of their breeding locations. Here, we compiled a new database of published and unpublished…1 March, 2025 by David Barnes
Microplastics, small pieces of plastic measuring less than five millimeters, have spread to all ecosystems, even those in the Southern Ocean around Antarctica. In particular, microplastics have been found contaminating…Read more on Quantifying microplastics concentration of invertebrates from three Antarctic fjords