76 Works

Data from: Mercury exposure in an endangered seabird: long-term changes and relationships with trophic ecology and breeding success

William Mills, Paco Bustamante, Rona McGill, Orea Anderson, Stuart Bearhop, Yves Cherel, Stephen Votier & Richard Phillips
Mercury (Hg) is an environmental contaminant which, at high concentrations, can negatively influence avian physiology and demography. Albatrosses (Diomedeidae) have higher Hg burdens than all other avian families. Here, we measure total Hg (THg) concentrations of body feathers from adult grey-headed albatrosses (Thalassarche chrysostoma) at South Georgia. Specifically, we: (i) analyse temporal trends at South Georgia (1989–2013) and make comparisons with other breeding populations; (ii) identify factors driving variation in THg concentrations; and, (iii) examine...

Data from: Contrasting drivers of reproductive ageing in albatrosses

Hannah Froy, Sue Lewis, Daniel H. Nussey, Andrew G. Wood & Richard A. Phillips
1.Age-related variation in reproductive performance is ubiquitous in wild vertebrate populations and has important consequences for population and evolutionary dynamics. 2.The ageing trajectory is shaped by both within-individual processes, such as improvement and senescence, and by the among-individual effects of selective appearance and disappearance. To date, few studies have compared the role of these different drivers among species or populations. 3.In this study, we use nearly 40 years of longitudinal monitoring data to contrast the...

Data from: Individuality in northern lapwing migration and its link to timing of breeding

Götz Eichhorn, Willem Bil & James W. Fox
We tracked eight adult northern lapwings, Vanellus vanellus, (six females and two males) from a Dutch breeding colony by light-level geolocation year-round, three of them for multiple years. We show that birds breeding virtually next to each other may choose widely separated wintering grounds, stretching from nearby the colony west towards the UK and Ireland, and southwest through France into Iberia and Morocco. However, individual lapwings appeared relatively faithful to a chosen wintering area, and...

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: Changing measurements or changing movements? Sampling scale and movement model identifiability across generations of biologging technology

Leah R. Johnson, Philipp H. Boersch-Supan, Richard A. Phillips & Sadie J. Ryan
1. Animal movement patterns contribute to our understanding of variation in breeding success and survival of individuals, and the implications for population dynamics. 2. Over time, sensor technology for measuring movement patterns has improved. Although older technologies may be rendered obsolete, the existing data are still valuable, especially if new and old data can be compared to test whether a behavior has changed over time. 3. We used simulated data to assess the ability to...

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: RAD sequencing resolves fine-scale population structure in a benthic invertebrate: implications for understanding phenotypic plasticity

David L.J. Vendrami, Luca Telesca, Hannah Weigand, Martina Weiss, Katie Fawcett, Katrin Lehman, Melody S. Clark, Florian Leese, Carrie McMinn, Heather Moore & Joseph I. Hoffman
The field of molecular ecology is transitioning from the use of small panels of classical genetic markers such as microsatellites to much larger panels of single nucleotide polymorphisms (SNPs) generated by approaches like RAD sequencing. However, few empirical studies have directly compared the ability of these methods to resolve population structure. This could have implications for understanding phenotypic plasticity, as many previous studies of natural populations may have lacked the power to detect genetic differences,...

Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland

Allan Perkins, Norman Ratcliffe, Dave Suddaby, Brian Ribbands, Claire Smith, Pete Ellis, Eric Meek & Mark Bolton
1. Understanding drivers of population change is critical for effective species conservation. In the northeast Atlantic Ocean, recent changes amongst seabird communities are linked to human and climate change impacts on foodwebs. Many species have declined severely, with food shortages and increased predation reducing productivity. Arctic skua Stercorarius parasiticus, a kleptoparasite of other seabirds, is one such species. 2. The aim of the study was to determine relative effects of bottom-up and top-down pressures on...

Data from: Bayesian inference of a historical bottleneck in a heavily exploited marine mammal

Joe I Hoffman, Suzie M Grant, Jaume Forcada & Caleb D Phillips
Emerging Bayesian analytical approaches offer increasingly sophisticated means of reconstructing historical population dynamics from genetic data, but have been little applied to scenarios involving demographic bottlenecks. Consequently, we analysed a large mitochondrial and microsatellite dataset from the Antarctic fur seal Arctocephalus gazella, a species subjected to one of the most extreme examples of uncontrolled exploitation in history when it was reduced to the brink of extinction by the sealing industry during the late eighteenth and...

Comparing Glacial-Geological Evidence and Model Simulations of Ice Sheet Change since the Last Glacial Period in the Amundsen Sea Sector of Antarctica

J.S. Johnson, D. Pollard, P.L. Whitehouse, S.J. Roberts, D.H. Rood & J.M. Schaefer
Since the Last Glacial Maximum ~20,000 years ago, the Antarctic Ice Sheet has undergone extensive changes, resulting in a much smaller present-day configuration. Improving our understanding of basic physical processes that played important roles during that retreat is critical to providing more robust model projections of future retreat and sea-level rise. Here, a limited-area nested ice sheet model was applied to the last deglacial retreat of the West Antarctic Ice Sheet in the Amundsen Sea...

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...

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...

Processed airborne radio-echo sounding data from the GRADES-IMAGE survey covering the Evans and Rutford Ice Streams, and ice rises in the Ronne Ice Shelf, West Antarctica (2006/2007)

Hugh Corr
An airborne radar survey was flown as part of the GRADES-IMAGE project funded by BAS over the Antarctic Peninsula, Ellsworth Mountains and Filchner-Ronne Ice Shelf (also including the Evans Ice stream and Carson Inlet) mainly to image englacial layers and bedrock topography during the 2006/07 field season. Operating from temporary field camps at Sky Blu, Partiot Hills and out of RABID depot (Rutford Ice Stream), we collected ~27,550 km of airborne radio-echo sounding data over...

Processed airborne radio-echo sounding data from the BBAS survey covering the Pine Island Glacier basin, West Antarctica (2004/2005)

Hugh Corr, Fausto Ferraccioli & David Vaughan
An airborne radar survey was flown as part of the BBAS science programme funded by the British Antarctic Survey over the Pine Island Glacier system during the austral summer of 2004/05. This survey was a collaborative US/UK field campaign which undertook a systematic geophysical survey of the entire Amundsen Sea embayment using comparable airborne survey systems mounted in Twin Otter aircraft. Operating from a temporary field camp (PNE, S 77deg34' W 095deg56'), we collected ~35,000...

Processed airborne radio-echo sounding data from the WISE-ISODYN survey across the Wilkes Subglacial Basin, East Antarctica (2005/2006)

Fausto Ferraccioli, Hugh Corr, Tom Jordan, Carl Robinson, Egidio Armadillo, E. Bozzo & G. Caneva
During the austral summer of 2005/06 a collaborative UK/Italian field campaign collected ~61,000 line km of aerogeophysical data over the previously poorly surveyed Wilkes subglacial basin, Dome C, Transantarctic Mountains, George V Land and Northern Victoria Land using airborne survey systems mounted in a Twin Otter aircraft. Our aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, a LaCoste and Romberg air-sea gravimeter, and an ice-sounding radar system...

Gridded bathymetric compilation of Tristan da Cunha from multibeam echosounder data collected by multiple vessels (1996-2019)

Alice Fremand, Alison Pettafor, Daniel Evans, Floyd Howard, Simon Morley & James Bell
We present a new gridded bathymetric compilation around Tristan da Cunha here defined by the following bounding box: 5 to 16.8W, 33 to 43.5S. This bathymetry grid was compiled from a variety of multibeam swath bathymetry data acquired during 7 different cruises (see lineage). The data is available as a grid of 0.001 degrees resolution in three different formats: NetCDF, ArcView ASCII and GeoTIFF formats using geographic coordinates on the WGS84 datum. This grid is...

Data from: Connectivity in the cold: the comparative population genetics of vent-endemic fauna in the Scotia Sea, Southern Ocean.

Christopher N. Roterman, Jon T. Copley, Katrin T. Linse, Paul A. Tyler & Alex D. Rogers
We report the first comparative population genetics study for vent fauna in the Southern Ocean using cytochrome C oxidase I and microsatellite markers. Three species are examined: the kiwaid squat lobster, Kiwa tyleri, the peltospirid gastropod Gigantopelta chessoia and a lepetodrilid limpet, Lepetodrilus sp. collected from vent fields 440 km apart on the East Scotia Ridge (ESR) and from the Kemp Caldera on the South Sandwich Island Arc, ~95 km eastwards. We report no differentiation...

Data from: Evolutionary factors affecting the cross-species utility of newly developed microsatellite markers in seabirds

Yoshan Moodley, Juan F. Masello, Gopi K. Munimanda, Theresa L. Cole, Marco R. Thali, Rachael Alderman, Richard J. Cuthbert, Manuel Marin, Melanie Massaro, Joan Navarro, Richard A. Phillips, Peter G. Ryan, Cristián G. Suazo, Yves Cherel, Henri Weimerskirch, Petra Quillfeldt & Luciano Calderon
Microsatellite loci are ideal for testing hypotheses relating to genetic segregation at fine spatio-temporal scales. They are also conserved among closely related species, making them potentially useful for clarifying interspecific relationships between recently diverged taxa. However, mutations at primer binding sites may lead to increased nonamplification, or disruptions that may result in decreased polymorphism in nontarget species. Furthermore, high mutation rates and constraints on allele size may also with evolutionary time, promote an increase in...

Data from: The influence of preceding dive cycles on the foraging decisions of Antarctic fur seals

Takashi Iwata, Kentaro Q. Sakamoto, Ewan W. J. Edwards, Ian J. Staniland, Philip N. Trathan, Yusuke Goto, Katsufumi Sato, Yasuhiko Naito & Akinori Takahashi
The foraging strategy of many animals is thought to be determined by their past experiences. However, few empirical studies have investigated whether this is true in diving animals. We recorded three-dimensional movements and mouth-opening events from three Antarctic fur seals during their foraging trips to examine how they adapt their behaviour based on past experience—continuing to search for prey in the same area or moving to search in a different place. Each dive cycle was...

Data from: Contrasting responses of male and female foraging effort to year-round wind conditions

Sue Lewis, Richard A. Phillips, Sarah J. Burthe, Sarah Wanless & Francis Daunt
1. There is growing interest in the effects of wind on wild animals, given evidence that wind speeds are increasing and becoming more variable in some regions, particularly at temperate latitudes. Wind may alter movement patterns or foraging ability, with consequences for energy budgets and, ultimately, demographic rates. 2. These effects are expected to vary among individuals due to intrinsic factors such as sex, age or feeding proficiency. Furthermore, this variation is predicted to become...

Data from: Seabird diversity hotspot linked to ocean productivity in the Canary Current Large Marine Ecosystem

W. James Grecian, Matthew J. Witt, Martin J. Attrill, Stuart Bearhop, Peter H. Becker, Carsten Egevang, Robert W. Furness, Brendan J. Godley, Jacob González-Solís, David Grémillet, Matthias Kopp, Amélie Lescroël, Jason Matthiopoulos, Samantha C. Patrick, Hans-Ulrich Peter, Richard A. Phillips, Iain J. Stenhouse & Stephen C. Votier
Upwelling regions are highly productive habitats targeted by wide-ranging marine predators and industrial fisheries. In this study, we track the migratory movements of eight seabird species from across the Atlantic; quantify overlap with the Canary Current Large Marine Ecosystem (CCLME) and determine the habitat characteristics that drive this association. Our results indicate the CCLME is a biodiversity hotspot for migratory seabirds; all tracked species and more than 70% of individuals used this upwelling region. Relative...

Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star

Quentin Jossart, Chester Sands & Mary A. Sewell
Poecilogony, or multiple developmental modes in a single species, is exceedingly rare. Several species described as poecilogenous were later demonstrated to be multiple (cryptic) species with a single developmental mode. The Southern Ocean is known to harbor a high proportion of brooders (Thorson's Rule) but with an increasing number of counter examples over recent years. Here we evaluated poecilogony versus crypticism in the brittle star Astrotoma agassizii across the Southern Ocean. This species was initially...

Data from: Quantifying Susceptibility of Marine Invertebrate Biocomposites to Dissolution in Reduced pH

Matthew Chadwick, Elizabeth M. Harper, Anaëlle Lemasson, John I. Spicer & Lloyd S. Peck
Ocean acidification threatens many ecologically and economically important marine calcifiers. The increase in shell dissolution under the resulting reduced pH is an important and increasingly recognised threat. The biocomposites that make up calcified hardparts have a range of taxon-specific compositions and microstructures, and it is evident that these may influence susceptibilities to dissolution. Here, we show how dissolution (thickness loss) under both ambient and predicted end-century pH (≈7.6) varies between seven different bivalve mollusc and...

GPS and Time-Depth Recorder tracking of common and Brunnich's guillemots from five colonies around Iceland, June-July 2019-2021

Norman Ratcliffe & Anne-Sophie Bonnet-Lebrun
We tracked 94 common and 50 Brunnich's guillemots from five colonies around Iceland (Latrabjarg, Grimsey, Langanes, Skrudur and Papey) during late incubation and chick rearing from June to July 2019. We also tracked 5 common and 3 Brunnich's guillemots from Langanes during chick-rearing in July 2020 (GPS only). We used Pathtrack nanoFix GPS loggers to record locations every 3min and Cefas G5 TDR loggers to record depth every second. The tags recorded the birds' behaviour...

Evidence for an Allee effect in a declining fur seal population

Rebecca Nagel, Claire Stainfield, Cameron Fox-Clarke, Camille Toscani, Jaume Forcada & Joseph Hoffman
Allee effects play an important role in the dynamics of many populations and can increase the risk of local extinction. However, some authors have questioned the weight of evidence for Allee effects in wild populations. We therefore exploited a natural experiment provided by two adjacent breeding colonies of contrasting density to investigate the potential for Allee effects in an Antarctic fur seal (Arctocephalus gazella) population that is declining in response to climate-change induced reductions in...

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  • British Antarctic Survey
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