During 2005-2006 season, water samples were collected from Ryder Bay at the Rothera Time Series (RaTS) site. A biogeochemical profile of water samples was conducted at 5 depths: 0m (surface), 5m, 10m, 15m and 25m In addition to this, primary productivity measurements using 14C-sodium bicarbonate in conjunction with water-cooled light gradient (photosynthetron) and also nutrient uptake measurements using 15N labelled stable isotopes, were performed on the water samples.
Conductivity-Temperature-Depth casts were conducted at Ryder Bay and Marguerite Bay from the James Clark Ross (cruise numbers: JR112/113, JR136/137, JR155 and JR174). The CTD casts at each site were made at a range of depths from the bottom to the surface waters with samples collected for macronutrients, particulate biogenic silica,carbon and nitrogen for later analysis.
Conductivity-Temperature-Depth (CTD) casts were conducted to describe the physical structure of the water column and to provide water samples for nutrient and particulate matter analyses from the James Clark Ross. A CTD transect was also conducted on a cruise across the mouth of Marguerite Bay (it was the intention to cover the entire mouth, but sea ice prevented this from happening), and through the trough leading towards the mooring sites. These casts were used to sample nutrients (NO3-, NO2-, Si(OH)4); nutrient isotopes 13DIC (dissolved inorganic carbon) 15NO3; bulk organic POC/PON (particulate organic carbon/nitrogen); bulk organic delta 13POC and delta 15PON.
The 2005-2006 field campaign was to determine alkyl nitrate and organo-halogen concentrations in the upper 100m of the water column at the Rothera Time Series (RaTS) site. Water samples were collected using a Niskin bottle hand winched to depths of 0, 5, 10, 15, 25, 50 and 100m. In total 12 depth profiles were obtained between 4 January and 4 March 2006. All trace gas seawater samples were extracted by purging and the resulting samples were analysed for selected alkyl nitrates and organohalogens using a gas chromatograph - mass selective detector (GC-MSD). The instrument was set up in the Bonner Laboratory at Rothera between November 2005 and April 2006. Sampling was not possible between mid-October and late December 2005 as the sea-ice remaining in the bay was not safe enough to traverse but was too abundant to launch a boat.
Lowered Acoustic Doppler Current Profiler (LADCP) and Conductivity Temperature Depth (CTD) data collected aboard the RRS James Clark Ross during cruises JR80 and JR110 in 2004. Data were used to calibrate instruments on four ocean moorings deployed in Shags Rock Passage, Scotia Sea. Four CTDs were used during JR110. Data includes continuous ocean profile data (surface to sea floor); temperature, salinity, pressure, current.
Argo floats measure temperature and salinity. Seven floats were deployed in November 2004 from the RRS James Clark Ross cruise JR110. Data were transmitted automatically to the British Oceanographic Data Centre (BODC).
Discrete ocean temperature, salinity and current measurements at four locations in Shag Rocks Passage. Moorings were deployed at 4 locations in Shag Rocks Passage (5255.6700S, 4745.5500W), (5255.6530S, 4745.9920W), (5302.5100S, 4802.7700W), (5302.5100S, 4802.3130W), (5309.0180S, 4829.9480W), (5318.2510S, 4854.8280W) from cruise JR080 in May 2004 and recovered on cruise JR110 in November 2004.
Measurements of benthic invertebrate particle reworking, bioirrigation, and associated nutrient concentrations used in the analyses by Solan et al. 2020 (see referenced publication) for shipboard incubations of replicate macrofaunal communities from the Western Barents Sea during summer 2017 and summer 2018. Samples were collected on cruises JR16006 and JR17007. Funding was provided 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), part of the NERC funded Changing Arctic Ocean programme.