Due to the constant thermal environment and lower carbonate saturation state of the Southern Ocean, Antarctic marine ectotherms are expected to be amongst the most sensitive to the combined stressors of warming and ocean acidification (OA).To investigate their long term acclimation capacity, adult Antarctic sea urchins, Sterechinus neumayeri, were incubated for 40 months under four treatments: 1) T cur - 0.3 deg C (present day) and pH 7.8 (moderate acidification) 2) pH cur 1.7 deg C (predicted temperature) and pH 8.1 (current pH) 3) pH-0.3 1.9 deg C and pH 7.8 4) pH-0.5 2.2 deg C and pH7.5 (high acidification) The energy budget (energy absorbed, energy lost through respiration and as nitrogenous waste) and growth parameters (scope for growth, mass of somatic and gonad tissues and the CHN content of gonad) were measured through the duration of two 21 day feeding and food processing cycles.Energy budgets were fully acclimated to OA treatments but there was only partial acclimation to temperature. Although metabolic rate was lower in the ambient temperature treatment (-0.3 compared to 2 deg C) and more energy was absorbed from food, there was no significant difference in the scope for growth between treatments. S. neumayeri can acclimate to predicted near future OA and is resilient to predicted temperature conditions.

The colony size and breeding success of Gentoo penguins (Pygoscelis papua) on Goudier Island, monitored annually 1996 - 2020. The data presented here includes the number of breeding pairs, the number of chicks that hatched from their eggs (approximately the mid-point in the annual breeding season) and the number of chicks present in creches at defined sub-colonies prior to fledging.

Field measurements collected from a open top chamber (OTC) warming experiment on Rothera Point, Adelaide Island. Data consist of (i) the percentage frequencies of fungal structures recorded in the tissues of the leafy liverwort Cephaloziella varians sampled from five control plots and five plots warmed with OTCs on six occasions between 16 February 2007 and 21 March 2017, (ii) temperatures of C. varians mat measured every 3 h between 17 February 2010 and 23 February 2011 in four control plots and four OTCs and (iii) moisture concentrations of C. varians mat measured on 11 January, 31 January, 14 February and 28 February 2014 in five control plots and five OTCs.

Since 1998, station personnel have been recording the wildlife they've observed whilst living and working at Rothera Research Station, Antarctica, as part of the Rothera Time-Series (RaTS) project. Originally, this consisted of a daily count of animals seen recorded in a logbook. More recently, dedicated wildlife survey recording sheets have been made available. The handwritten raw data were then collated and input into a spreadsheet, creating a database of wildlife sightings. Funding source: These data have been collected by British Antarctic Survey (BAS) personnel as part of an on-going long-term monitoring programme supported by NERC core funding.

A hand-held Garmin GPS was used to map vegetation patches on Leonie and Anchorage Island in February 2007. Discrete patches of vegetation were walked round, and the recorded track saved. The aim of the data collection was to provide some ground truthing data for vegetation NVDI (Normalized Difference Vegetation Index) ratios calculated from satellite data. Funding: UK Natural Environment Research Council (core funding to the British Antarctic Survey).

Shrub inventory for Alnus alnobetula and Salix spp. samples. Sample collection of Alnus alnobetula and Salix spp. was undertaken in the Inuvialuit Settlement region, Northwest Territories, Canada during field campaigns in 2022, 2023, and 2024. Shrub stems were sampled from both living canopy-forming shrubs, and from beaver-browsed stems. This dataset consists of inventories of shrub samples and subsamples collected for shrub ring width measurements, dendrochronological chronology formation, and crossdating. This data was collected as part of the Beavers and Socio-ecological Resilience in Inuit Nunangat (BARIN) project. Funding was provided by the UK Research and Innovation Canada Inuit Nunangat UK Arctic research programme (CINUK) grant NE/X002578/1.

Eight Antarctic Fur seal rookeries near King Edward Point on South Georgia have been monitored since 2008. The colonies (Burnet1, Burnet2, Burnet2, Little, Poa1, Poa2, Poa3 and Tortula) are surveyed frequently between November and January. The number of males, females, pups and juveniles are recorded. Data is also summarised as max count per season for males, females pups and juveniles, and first pup date. This work was funded by Natural Environment Research Council (UK) core funding to the British Antarctic Survey.

Nests of Light-mantled Albatrosses (Phoebetria palpebrata) throughout a study area on Bird Island have been monitored annually since 2000, with surveys in November, January and May. The number of nests, eggs and chicks are counted and from this, yearly breeding success is calculated.

These data comprise diatom species frequency and environmental (geographic and limnological) data from 64 lakes on subantarctic Marion Island (46deg55'S, 37deg45'E) that were collected in April-May 2011. 143 diatom species were identified from the lake waters. Environmental data consist of Ca, K, Mg, Na, Fe, Al, Cl, SO4, NO3, NO2, NH4, P, HCO3, pH, conductivity, water temperature, and salinity measurements. Geographical data consist of Latitude, Longitude, Altitude, and geological substrate parameters. This work forms part of the thesis of van Nieuwenhuyze (2015). This work was funded by Belgian Science Policy Office project CCAMBIO (SD/BA/03) and a Research Foundation-Flanders travel bursary awarded to E. Verleyen.

Quantification of interactive effects of ocean warming and ocean acidification based on near-future climate change projections on morphometrics and oocyte size of benthic invertebrates (the bivalves Astarte crenata and Bathyarca glacialis) from the Western Barents Sea. Supported by The Changing Arctic Ocean Seafloor (ChAOS) - how changing sea ice conditions impact biological communities, biogeochemical processes and ecosystems project (NE/N015894/1 and NE/P006426/1, 2017-2021), Natural Environment Research Council (NERC) in the UK.