4e009906-be9f-4a6b-a64c-c5de0a3e37ec eng; CAN Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca 2022-04-08T12:58:30 North American Profile of ISO 19115:2003 2009-01-01 https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=1278 Impact of climate change on the Arctic benthos in the southeastern Beaufort Sea 2015-04-29 Archambault, Philippe Link, Heike du Preez, Cherisse Piché, Laurence Tyler, Jennifer Link H, Archambault P, Tamelander T, Renaud Pe, Piepenburg D (2011) Spring-to-summer changes and regional variability of benthic processes in the western Canadian Arctic. Polar Biology 34:2025-2038 Samples were collected at 5 sites ranging in water depth from 100 to 595 m at least once in each season (ice-covered and open-water condition) between March and August 2008 onboard the icebreaker CCGS Amundsen. At each sampling station, an USNEL box corer was deployed for collecting seafloor sediments. From each box core, 5 sub-cores of 11 cm diameter and 20 cm sediment depth were taken for assessing benthic carbon remineralisation in microcosm incubations and 3 additional subcores of 5 cm diameter and 10 cm length were taken for determining sediment properties. Incubations of sediment microcosms were run in a dark, temperature-controlled room (2-4 °C) for 24-48 h. Each sediment microcosm was sieved through a 0.5 mm mesh under running sea water at the end of incubations to determine biomass of macrofaunal communities. The sieve residue was preserved in a buffered 4% seawater-formaldehyde solution and analysed for species composition and abundance under a stereomicroscope in the lab. The objective was to describe how seasonal changes in the availability of food influence benthic carbon remineralisation - the rate of carbon cycling - in the southeastern Beaufort Sea. Our hypotheses were that (1) the availability of food for benthic communities increases significantly following the ice melt, (2) benthic biomass increases after the ice melt, (3) benthic carbon remineralisation increases significantly following ice melt, and (4) spatial variability of benthic carbon remineralisation is determined by both food availability and benthic community patterns, here tested as biomass. Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://metadata.arice-h2020.eu/geonetwork/srv/api/records/4e009906-be9f-4a6b-a64c-c5de0a3e37ec/attachments/map.png Benthos Biodiversity Carbon Invertebrates North Water Polynya Nutrient cycling Oxygen Secondary production Polar Data Catalogue Thesaurus (Canada) 2021-06-02 Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://www.polardata.ca/pdcinput/public/keywordlibrary Southeastern Beaufort Sea Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse eng; CAN environment -127.088 -121.811 69.96 71.318 Time period can be either covered by the content of the dataset or the date when the data has been collected. 2008-03-28 2008-08-02 Summary: Not Applicable Research Program(s): ArcticNet,CBMP/CAFF - Marine. For further information: philippe_archambault@uqar.qc.ca false Digital file 1.0 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca This metadata was generated from the PDC metadata database at 2021-06-02 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca