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.

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.

The weights of fledging Gentoo penguin chicks at Bird Island have been monitored since 1989. The colony at Johnson Cove can have over 1000 breeding pairs. Each year, just before their departure from the colony, a sample of 100 fledgling birds are weighed as part of the Bird Island long-term monitoring programme. This data is submitted to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) as part of their Ecosystem Monitoring Programme (CEMP). This work was funded by Natural Environment Research Council (UK) core funding to the British Antarctic Survey.

Quantification of morphological and reproductive traits in Astarte crenata and Ctenodiscus crispatus (oocyte size/gonad index), used in the analyses by Reed et al. 2021 (Ecology and Evolution) from the Western Barents Sea during summer 2017 across a North - South Transect intersecting the polar front.

Images of histological sections of oocytes to quantify oocyte size frequency distributions in Astarte crenata and Ctenodiscus crispatus used in the analyses by Reed et al. 2021 (Ecology and Evolution) from the Western Barents Sea during summer 2017 across a North - South transect intersecting the polar front. 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.

The weights of fledging Macaroni penguin chicks at Bird Island have been monitored since 1989. The colony at Fairy Point, also known as Little Mac, contains approximately 400 breeding pairs. Each year, just before their departure from the colony, a sample of 100 fledgling birds are weighed as part of the Bird Island long-term monitoring programme. This data is submitted to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) as part of their Ecosystem Monitoring Programme (CEMP). This work was funded by Natural Environment Research Council (UK) core funding to the British Antarctic Survey.

Images of histological sections of oocytes to quantify the interactive effects of ocean warming and ocean acidification based on near-future climate change projections on oocyte size frequency distributions 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.

The use of automated systems to record the identity of individual penguins and their movements in and out of a colony can provide an effective means of studying penguin biology remotely. In 2002 an automatic gateway was installed at the only access point to the Macaroni Penguin (Eudyptes chrysolophus) colony at Fairy Point, Bird Island. Taking advantage of the colony''s geography, which ensured that the birds have only one route between the colony and the sea, the gateway initially recorded bird identities from implanted radio frequency identification transponders (RFID tags). In 2009 a weighbridge was installed which records the weight of each bird and the direction of travel and from 2011 onwards the two systems, RFID antenna and weighbridge, were built into the same unit meaning it was now possible to confidently match the crossing data with bird identities.

Since 2009, the weights of male and female Antarctic Fur Seal pups from the Maiviken area on South Georgia have been monitored. 100 pups are randomly sampled from two areas, tussock and beach, at the start of January, February and March. This work was funded by Natural Environment Research Council (UK) core funding to the British Antarctic Survey.

Several populations of Northern (Macronectes halli) and Southern Giant Petrel (Macronectes giganteus) at South Georgia have been monitored since 2014. Three colonies of Northern Giant Petrel are monitored at Greene Peninsula, Discovery Point and Maiviken, and two of Southern Giant Petrel at Greene Peninsula and Harpon Bay. Summary data on breeding numbers and productivity for each season and colony are available, based on data from individual nests.