147 Works

LiDAR based Digital Surface Model (DSM) data for South West England

F. Ferraccioli, F. Gerard, C. Robinson, T. Jordan, M. Biszczuk, L. Ireland, M. Beasley, A. Vidamour, A. Barker, R. Arnold, M. Dinn, A. Fox & A. Howard
This is a high resolution spatial dataset of Digital Surface Model (DSM) data in South West England. It is a part of outcomes from the CEH South West (SW) Project. There is also a Digital Terrain Model (DTM) dataset covering the same areas available from the SW project. Both DTM and DSM cover an area of 9424 km2 that includes all the land west of Exmouth (i.e. west of circa 3 degrees 21 minutes West)....

Data from: Migratory behavior of birds affects their coevolutionary relationship with blood parasites

Tania Jenkins, Gavin Huw Thomas, Olof Hellgren & Ian P. F. Owens
Host traits, such as migratory behavior, could facilitate the dispersal of disease causing parasites, potentially leading to the transfer of infections both across geographic areas and between host species. There is however, little quantitative information on whether variation in such host attributes do indeed affect the evolutionary outcome of host-parasite associations. Here, we employ Leucocytozoon blood parasites of birds, a group of parasites closely related to avian malaria, to study host-parasite coevolution in relation to...

Data from: The effect of a competitor on a model adaptive radiation

Quan-Guo Zhang, Richard Ellis & H. Charles J. Godfray
The ecological forces shaping adaptive radiations are of great interest to evolutionary ecologists. Here we experimentally test the hypothesis that the diversification of a lineage should be limited in the presence of competition from another taxon. We do this by studying a model microbial adaptive radiation (the generation of phenotypic diversity in asexual lineages of the bacterium Pseudomonas fluorescens) in the presence or absence of a competitor (Pseudomonas putida). In a spatially heterogeneous environment, the...

Data from: Influence of device accuracy and choice of algorithm for species distribution modelling of seabirds: a case study using black-browed albatrosses

Petra Quillfeldt, Jan O. Engler, Janet R. D. Silk, Richard A. Phillips & Janet R.D. Silk
Species distribution models (SDM) based on tracking data from different devices are used increasingly to explain and predict seabird distributions. However, different tracking methods provide different data resolutions, ranging from < 10m to >100km. To better understand the implications of this variation, we modeled the potential distribution of black-browed albatrosses Thalassarche melanophris from South Georgia that were simultaneously equipped with a Platform Terminal Transmitter (PTT) (high resolution) and a Global Location Sensor (GLS) logger (coarse...

Data from: Global biogeographic patterns in bipolar moss species

Elisabeth Machteld Biersma, Jennifer A. Jackson, Jaakko Hyvonen, Satu Koskinen, Katrin Linse, Howard Griffiths & Peter Convey
A bipolar disjunction is an extreme, yet common, biogeographic pattern in non-vascular plants, yet its underlying mechanisms (vicariance or long-distance dispersal), origin and timing remain poorly understood. Here, combining a large-scale population dataset and multiple dating analyses, we examine the biogeography of four bipolar Polytrichales mosses, common to the Holarctic (temperate and polar Northern Hemisphere regions) and the Antarctic region (Antarctic, sub-Antarctic, southern South America) and other Southern Hemisphere (SH) regions. Our data reveal contrasting...

Data from: Investigating trehalose synthesis genes after cold acclimation in the Antarctic nematode Panagrolaimus sp. DAW1

A.C. Seybold, David A. Wharton, Michael A.S. Thorne & Craig J. Marshall
Panagrolaimus sp. DAW1 is a freeze-tolerant Antarctic nematode which survives extensive intracellular ice formation. The molecular mechanisms of this extreme adaptation are still poorly understood. We recently showed that desiccation-enhanced RNA interference (RNAi) soaking can be used in conjunction with quantitative polymerase chain reaction (qPCR) to screen for phenotypes associated with reduced expression of candidate genes in Panagrolaimus sp. DAW1. Here, we present the use of this approach to investigate the role of trehalose synthesis...

CPC particle count at Halley VIa CASLab 2020

Joshua Eveson & Freya Squires
A TSI CPC (Condensation Particle Counter) Model 3010 was installed at Halley's Clean Air Sector Laboratory (CASLab), a mile from the station's generator, in the (austral) summer of 2019/20 and began collecting data in February as a long term dataset. The inlet is a 3m length of antistatic tubing, with a portion left untethered so that it can move with the prevailing wind. This is to prevent icing of the inlet by allowing the inlet...

Data from: Fur seal microbiota are shaped by the social and physical environment, show mother-offspring similarities and are associated with host genetic quality

Stefanie Grosser, Jan Sauer, Anneke Paijmans, Barbara Caspers, Jaume Forcada, Jochen Wolf & Joseph Hoffman
Despite an increasing appreciation of the importance of host-microbe interactions in ecological and evolutionary processes, the factors shaping microbial communities in wild populations remain poorly understood. We therefore exploited a natural experiment provided by two adjacent Antarctic fur seal (Arctocephalus gazella) colonies of high and low social density and combined 16S rRNA metabarcoding with microsatellite profiling of mother-offspring pairs to investigate environmental and genetic influences on skin microbial communities. Seal-associated bacterial communities differed profoundly between...

Coastal change data for the Antarctic Peninsula region, 1843 to 2008

Alison Cook, Adrian Fox & Janet Thomson
The dataset records ice coast and ice shelf front positions and hence change for the period 1843 to 2008. Archival maps, aerial photographs and satellite images of the Antarctic Peninsula were used to reveal the past shape of the ice coastline. The coastlines were mapped in a GIS (ESRI Arc/Info) using a mosaic of Landsat TM imagery as a common reference. Over 2000 aerial photographs and over 100 satellite images were used to compile the...

Structure-from-motion-generated imagery, nest location coordinates and counts for Adelie, chinstrap, gentoo and macaroni penguins on the South Sandwich Islands, from December to February, 2019-2020.

Tom Hart, Sarah Manthorpe, Gemma Clucas & Heather Lynch
This dataset contains penguin survey data and imagery from unmanned aerial vehicles (UAV) across the South Sandwich Islands, from December 2019 to February 2020. It comprises orthotiff images (orthotiffs) and digital elevation models (DEMS) of surveyed sites, geographic penguin colony outlines, nest coordinates for individual species, mixed species' sub-colonies and groups where species-level identification was not possible. Finally, it also includes the total count for these different categories for each individual site, alongside an estimate...

Glacier boundaries (1975-2020) and elevation change (2000-2020) of the Peruvian Cordilleras Vilcanota, Vilcabamba, and Urubamba

Liam Taylor, Duncan Quincey, Mark Smith, Emily Potter, Joshua Castro & Catriona Fyffe
This dataset contains glacier boundaries from 1975 to 2020 and elevation change data from 2000 to 2020 over the Cordilleras Vilcanota, Vilcabamba, and Urubamba, Peru. Glacier boundary data were analysed in Google Earth Engine from the Landsat archive and quantifies rate of change in ice extent over recent decades. Elevation change data were analysed in Google Earth Engine from the ASTER archive and quantifies change in ice thickness over decadal intervals from 2000 to 2020....

Year-round Arctic sea ice thickness from CryoSat-2 Baseline-D Level 1b observations 2010-2020

Jack Landy & Geoffrey Dawson
This dataset presents biweekly gridded sea ice thickness and uncertainty for the Arctic derived from the European Space Agency's satellite CryoSat-2. An associated 'developer's product' also includes intermediate parameters used or output in the sea ice thickness processing chain. Data are provided as biweekly grids with a resolution of 80 km, mapped onto a Northern Polar Stereographic Grid, covering the Arctic region north of 50 degrees latitude, for all months of the year between October...

Annual measurements of body mass for chinstrap penguin chicks at Signy Island, from 1997 to 2020.

Michael J Dunn, Stacey Adlard, Amanda Lynnes, Dirk Briggs, Derren Fox & Tim Morley
This datasets captures the annual measurements of body mass for chinstrap penguin chicks at Signy Island, from 1997 to 2020. Between 50 to 100 chicks are measured, with 3-5 weighing sessions carried out in the period before fledging is complete. This monitoring contributes to the CCAMLR Ecosystem Monitoring Program (CEMP) and is part of annual monitoring carried out by the British Antarctic Survey. This work was funded by Natural Environment Research Council (UK) core funding...

Perfluoroalkyl substances (PFAS) concentrations in the marine Arctic environment collected between 26-Aug-2019 to 28-Aug-2019

Jack Garnett, Crispin Halsall, Anna Vader, Hanna Joerss, Ralf Ebinghaus, Amber Leeson & Peter Wynn
Samples of snow, sea ice, seawater (0.5 m and 5 m depths) and meltponds were collected from two ice-covered stations located in the Barents Sea (81 N), during the "Nansen Legacy Q3" summer cruise of the Norwegian research vessel Kronprins Haakon on 26-28 August 2019. Perfluoroalkyl substances (PFAS) concentrations, salinity and stable oxygen isotopes were measured in all samples to determine sources and environmental fate of PFAS during late summer. NERC ENVISION Doctoral Training Centre...

TS05 and TS07 external magnetic field model L*, LCDS and B field data for the GOES-13, GOES-15 and HIMAWARI-8 satellites for three geomagnetic storm periods

Thomas Daggitt
The dataset contains satellite L* values, last closed drift shell (LCDS) model locations and model magnetic field values for three two day periods covering three different magnetic storms. The periods covered are 27-28 February 2014, 22-23 June 2015 and 14-15 December 2015. The L* values are calculated for electrons with a pitch angle of 90 degrees at the locations of the GOES-13, GOES-15 and HIMAWARI-8 geostationary satellites, using the IRBEM library with the TS05 and...

BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised data points

Peter Fretwell, Alice Fremand, Julien Bodart, Hamish Pritchard, David Vaughan, Jonathan Bamber, N. Barrand, R.E. Bell, C Bianchi, Robert Bingham, Donald Blankenship, G. Casassa, Ginny Catania, D. Callens, H Conway, Alison Cook, Hugh Corr, D Damaske, V. Damn, Fausto Ferraccioli, Rene Forsberg, S. Fujita, Y. Gim, P. Gogineni, J. Griggs … & A. Zirizzotti
We present here the Bedmap2 ice thickness, bed and surface elevation standardised CSV data points that were used to create the Bedmap2 gridding products. The data consists of 25 million points coming from 68 individual surveys acquired in Antarctica. The associated datasets consist of: - Bedmap1 standardised CSV data points: https://doi.org/10.5285/f64815ec-4077-4432-9f55-0ce230f46029 - Bedmap3 standardised CSV data points: https://doi.org/10.5285/91523ff9-d621-46b3-87f7-ffb6efcd1847 - Bedmap2 statistically-summarised data points (shapefiles): https://doi.org/10.5285/0f90d926-99ce-43c9-b536-0c7791d1728b - Bedmap2 gridding products: https://doi.org/10.5285/fa5d606c-dc95-47ee-9016-7a82e446f2f2 This work is supported by...

Contemporary (2016 - 2020) land cover classification across West Antarctica and the McMurdo Dry Valleys

Christopher Stringer
We present here the land cover classification across West Antarctica and the McMurdo Dry Valley produced from Landsat-8 Operational Land Imager (OLI) images of six proglacial regions of Antarctica at 30 m resolution, with an overall accuracy of 77.0 % for proglacial land classes. We conducted this classification using an unsupervised K-means clustering approach, which circumvented the need for training data and was highly effective at picking up key land classes, such as vegetation, water,...

Phase-sensitive radar (ApRES) time series data from Thwaites eastern ice shelf, 2020

Keith Nicholls & David Holland
The dataset comprises ApRES (Autonomous phase-sensitive Radio Echo Sounder) time series from four sites (G1-4) through the grounding zone of the eastern Thwaites ice shelf. The instruments were deployed in early 2020 and recovered in early 2021 as part of the International Thwaites Glacier Collaboration (ITGC) MELT project. The aim was to provide time series of basal melt rates and the vertical strain rate at each site. The ApRES DAT files were converted to netCDF...

High resolution vector polygons of the Antarctic coastline - VERSION 7.5

Laura Gerrish, Peter Fretwell & Paul Cooper
Coastline for Antarctica created from various mapping and remote sensing sources, provided as polygons with 'land', 'ice shelf', 'ice tongue' or 'rumple' attribute. Covering all land and ice shelves south of 60S. Suitable for topographic mapping and analysis. High resolution versions of ADD data are suitable for scales larger than 1:1,000,000. The largest suitable scale is changeable and dependent on the region. Major changes in v7.5 include updates to ice shelf fronts in the following...

Carbon dioxide flux and isotopic composition from sedimentary rock weathering, Waiapu River catchment, New Zealand

Tobias Roylands, Robert G Hilton, Mark H Garnett & Guillaume Soulet Soulet
These data were collected to study oxidative weathering processes in the Waiapu River catchment, New Zealand, with potential carbon release sourced from the oxidation of petrogenic organic carbon or carbonate dissolution coupled to the oxidation of sulfide minerals. There, in mudstones exposed in a highly erosive gully complex, in situ CO2 emissions were measured with drilled gas accumulation chambers following the design by Soulet et al. (2018, Biogeosciences 15, 4087-4102, https://doi.org/10.5194/bg-15-4087-2018). Temporal and spatial variability...

Autosub Long Range beneath Ronne Ice Shelf (2018): hydrographic, velocity and turbulence observations along the Modified Warm Deep Water Inflow

Peter E.D. Davis & Adrian Jenkins
Autosub Long Range (ALR) was deployed along the Modified Warm Deep Water Inflow beneath Ronne Ice Shelf in February 2018 as part of the Ice shelves in a warming world: Filchner Ice Shelf system large grant, Antarctica. The vehicle was equipped with a Seabird Conductivity-Temperature-Depth (CTD) sensor, two Teledyne Acoustic Doppler Current Profilers (ADCPs), one upward looking and one downward looking, and a nose-mounted Rockland Scientific International MicroRider turbulence package. ALR followed a rhumb line...

Macronutrient, temperature and salinity measurements made around the island of South Georgia and the wider Scotia Sea, the Antarctic Peninsula, and in the Bellingshausen Sea between 1980 and 2009

Michael J. Whitehouse, Katharine R. Hendry, Geraint A. Tarling, Sally E. Thorpe & Petra ten Hoopen
Between 1980 and 2009, marine macronutrient concentrations (silicate, Si(OH)4-Si; phosphate, PO4-P; nitrate, NO3-N; ammonium, NH4-N; and nitrite, NO2-N) and concurrent temperature and salinity were measured by British Antarctic Survey researchers as part of an integrated ecosystem investigation. Areas sampled included South Georgia and the wider Scotia Sea, around the Antarctic Peninsula, and in the Bellingshausen Sea. The data were collected from aboard the RRS John Biscoe or the RRS James Clark Ross during all months...

Ice Tracker data of Arctic sea ice during the MOSAiC expedition 2020-2021

Byongjun Hwang &
20 Ice Trackers were deployed at the MOSAiC drifting site. The deployment of the trackers was made from the helicopter onboard RV Polarstern during Leg 5 of the expedition. The data contain the GPS positioning of the trackers (and the motion of the ice on which the trackers were deployed). The data record starts from early September 2020 and lasted until July 2021 for the longest-surviving trackers. The trackers started their drift near the North...

Medium resolution vector polylines of the Antarctic coastline - VERSION 7.6

Laura Gerrish, Peter Fretwell & Paul Cooper
Coastline for Antarctica created from various mapping and remote sensing sources, consisting of the following coast types: ice coastline, rock coastline, grounding line, ice shelf and front, ice rumple, and rock against ice shelf. Covering all land and ice shelves south of 60S. Suitable for topographic mapping and analysis. This dataset has been generalised from the high resolution vector polyline. Medium resolution versions of ADD data are suitable for scales smaller than 1:1,000,000, although certain...

Clay mineral composition of sediments from International Ocean Discovery Program (IODP) Expedition 379 Hole U1533A, Amundsen Sea, West Antarctica (2019)

Claus-Dieter Hillenbrand & Werner Ehrmann
This data set presents contents of the clay minerals smectite, illite, chlorite and kaolinite analysed on the clay fraction (less than 2 micrometers) of Pleistocene-Holocene drift sediments recovered at Hole U1533A on the Amundsen Sea continental rise during IODP Exp379 with RV JOIDES Resolution in Jan-Mar 2019. The clay mineral contents are given in percentages both versus expedition number, site number, hole ID, core number, drill core type (H: advanced piston corer system, X: extended...

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  • British Antarctic Survey
  • Natural Environment Research Council
  • Natural Environment Research Council, UK Research & Innovation
  • Newcastle University
  • Royal Society for the Protection of Birds
  • Durham University
  • University of Aberdeen
  • Northumbria University
  • University of Bristol
  • University of Cambridge