23b7ea72-3eb0-415c-8417-11be9b187496 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 2022-04-08T12:59:43 North American Profile of ISO 19115:2003 2009-01-01 https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=11148 Benthic biodiversity in relation to environmental variables in the Canadian Arctic 2015-03-23 Archambault, Philippe Roy, Virginie Fontaine, Anne Olivier, Frédéric Roy V, Iken K, Archambault P (2014) Environmental Drivers of the Canadian Arctic Megabenthic Communities. PLoS ONE 9(7): e100900. doi:10.1371/journal.pone.0100900 Benthic fauna were sampled at 78 stations between June and October from 2007 to 2011 onboard the Canadian research icebreaker CCGS Amundsen. Station depths ranged from 34 to 1024 m, all below the average ice scouring zone. All faunal samples were collected with an Agassiz trawl (effective opening of 1.5 m and a 40 mm net mesh size, with a 5 mm cod end liner) with average trawling time and speed of 5 min and 1.5 knots, respectively. The current project studied how megabenthic community structure is associated with environmental gradients across 70° longitude (2000 km) of the Canadian Arctic marine environment. The specific objectives of this study were: (1) to delineate community clusters and characterize their structure and distribution patterns, and (2) to evaluate the relationships of environmental factors of various spatial scales with megabenthic community characteristics (e.g., richness, biomass) and community distribution. We hypothesized that: (i) megabenthic biomass, density, richness and diversity decrease with depth and increase with food supply proxies, and (ii) community patterns are associated primarily with large-scale environmental gradients (100-1000 km), and secondarily with meso-scale gradients (10-100 km). This study increases our understanding of the Arctic that is experiencing rapid changes and could serve as a benchmark against which future changes in megabenthic diversity and community patterns could be identified (e.g., species range shifts, invasive species). 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/23b7ea72-3eb0-415c-8417-11be9b187496/attachments/map.png Benthic surveys Benthos Biodiversity Canadian Arctic Archipelago Grain size Modeling Organic carbon Organic matter Pigments Sediments 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 Canadian Arctic marine environment Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse eng; CAN environment -135 -65 69.17 77.22 Time period can be either covered by the content of the dataset or the date when the data has been collected. 2007-06-01 2011-10-30 Summary: Not Applicable Research Program(s): ArcticNet,CHONe (Canadian Healthy Oceans Network). For further information: philippe_archambault@uqar.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