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    This metadata record represents environmental data from oceanographic moorings at Granite Harbour Middle (-77.00406667, 162.58795000). Conductivity, temperature, depth (CTD), photosynthetically active radiation (PAR), and currents were measured at ~20-meter depth for 12 months to characterise variability in the nearshore habitat. These instruments form part of the Antarctic Nearshore and Terrestrial Observation Systems (ANTOS), and the data will be made available at the ANTOS website: https://antosdb.org GET DATA: vonda.cummings@niwa.co.nz

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    The oceanographic mooring (-77.891050, 166.258333) to characterise the upper ocean. GET DATA: natalie.robinson@niwa.co.nz

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    The oceanographic mooring (-77.81830000, 165.40590000) which records temperature, salinity, and current flow at multiple depths for full 12-month cycles represents a step-change in our ability to monitor the flow of Ice Shelf Water – which carries the signature of deep ice shelf melt – northwards and out of the Ross/McMurdo Ice Shelf cavity through western McMurdo Sound. The site will be revisited in during the 2024/25 field season to recover the instruments and download their data. Our intention is to collect a total of 36 months of data (3x 12-month deployment/recovery cycles) in order to characterise the Ice Shelf Water outflow and the scale of its inter-annual variability. GET DATA: natalie.robinson@niwa.co.nz

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    This metadata record represents environmental data at Cape Evans. Conductivity, temperature, depth (CTD), photosynthetically active radiation (PAR), and currents were measured at ~20-meter depth for 12 months to characterise variability in the nearshore habitat. These instruments form part of the Antarctic Nearshore and Terrestrial Observation Systems (ANTOS). The combined analyses of coastal currents and sea ice conditions with genetic and trophic data were used to understand the influence of key drivers on the interconnectedness of existing Ross Sea populations, and on the resilience of key benthic species to environmental change. The data will be made available at the ANTOS website: https://antosdb.org Mooring Coordinates: Cape Evans (-77.63491667, 166.41405) GET DATA: vonda.cummings@niwa.co.nz

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    Knowledge of recruitment dynamics, and in particular trends in recruitment and recruitment variability, are key inputs for integrated assessments of fish stocks. A quantitative longline survey monitoring the recruitment of Antarctic toothfish (Dissotichus mawsoni) in the southern Ross Sea was started in 2012. The survey was expanded in 2016 to monitor trends and biological characteristics in two areas of importance to predators, Terra Nova Bay and McMurdo Sound, and to collect data that would contribute to the research and monitoring plan for the Ross Sea region Marine Protected Area. In most years, the survey was completed as planned, while in three years several factors have constrained the survey from sampling all stations and in the latest two seasons pandemic travel restrictions have necessitated an alternative delivery approach. Between 2012 and 2022, 2 056 tagged Antarctic toothfish have been released on the survey and 21 toothfish have been recaptured. Fifteen pop-up satellite archival tags (PSATs) were deployed on D. mawsoni in 2019 and fifteen skates were tagged in 2020 and 2021. Many tagged toothfish released from the RSSS move from the shelf to the slope. Trends in abundance indices and size and age composition consistently show the progression of strong year classes entering and leaving the survey area and have indicated that recruitment is likely more variable than previously thought. Data from the RSSS have been used to indicate year class strength in Antarctic toothfish stock assessments since 2015. The twelve surveys to date have resulted in a substantive increase in the knowledge and understanding of the distribution and relative abundance of a range of demersal fish species and invertebrate taxa caught on the longlines. Other data routinely collected on the surveys were plankton, temperature, salinity, air quality, cetacean and other marine mammal observations, and photo, video, and echosounder data. The RSSS has provided synergies with other research programmes also addressing CCAMLR objectives, particularly those focused on research and monitoring within the RSrMPA. GET DATA: https://www.ccamlr.org/en/publications/statistical-bulletin

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    This metadata record represents environmental data from oceanographic moorings at Granite Harbour South. Conductivity, temperature, depth (CTD), photosynthetically active radiation (PAR), and currents were measured at ~20-meter depth for 12 months to characterise variability in the nearshore habitat. These instruments form part of the Antarctic Nearshore and Terrestrial Observation Systems (ANTOS). The combined analyses of coastal currents and sea ice conditions with genetic and trophic data were used to understand the influence of key drivers on the interconnectedness of existing Ross Sea populations, and on the resilience of key benthic species to environmental change. The data will be made available at the ANTOS website: https://antosdb.org Mooring Coordinates: Granite Harbour South (-77.01594444, 162.87616667) GET DATA: vonda.cummings@niwa.co.nz

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    The oceanographic mooring (-77.891050, 166.258333) provided year-round characterisation of the water column near Cape Armitage. Depth, Temperature, Salinity, and Density records from the three microcat (SBE37) instruments deployed at nominal depths of: - 84 mSBL, - 252 mBSL, - 452 mBSL. This collection includes: - 11 instruments - Temperature logger (SBE56) x8, 1 year deployment, 1-minute intervals - x3 microcat (SBE37) units continuously recorded temperature, conductivity, and pressure (CTD) at 2-minute intervals, deployed at nominal depths of (a) 84 mSBL, (b) 252 mBSL, and (c) 452 mBSL. Data were captured in full resolution, processed in Matlab, and converted to .dat and Matlab formats. Each temperature logger record was assigned a timeseries of depths corresponding to a straight-line linear fit between the measured upper and lower reference points – either pressure records from the SBE37 units, or from the measured seabed for the lower unit. GET DATA: natalie.robinson@niwa.co.nz