246 Works

Carbon and nitrogen cycling in tundra soils - Churchill

Angela Bedard-Haughn & Maxime Paré
The landscapes were divided into five landform units: (1) upper slope, (2) back slope, (3) lower slope, (4) hummock, and (5) interhummock, which represented a great diversity of Static and Turbic Cryosolic soils including Brunisolic, Gleysolic, and Organic subgroups. Soil gross N mineralization was measured using the 15N dilution technique, whereas soil GHG emissions (N2O, CH4, and CO2) were measured using a multicomponent Fourier transform infrared gas analyzer. Soil organic matter characteristics were determined by...

SX90 sonar data in the Beaufort Sea: 2011

Louis Fortier, Maxime Geoffroy, Ole Bernt Gammelsaeter, Shani Rousseau & Didrik Vartdal
The data set is composed of raw files recorded with the Kongsberg Maritime SX90 long-range, low frequency (20-30 kHz) fisheries sonar during the CCGS Amundsen 2011 summer expedition in the Beaufort Sea. The sonar was operated during 4 dedicated surveys (109 hours) and during 258 hours of opportunistic survey, from 27 August to 3 October. The sonar transducer was lowered 2.5 feet below the hull through a gate-valve. The cylindrical 256-elements transducer allows both a...

2007-2014 West River subcatchment hydrometric data, Cape Bounty

Scott Lamoureux
Monitoring at two subcatchments began in 2007, prior to disturbance. Some stations were abandoned due to shifting channels. Duration of observations are as follows: Goose Creek (2007-2010, 2012, 2014); Ptarmigan Creek (2007-2010, 2012, 2014); ALD05 Creek (2008-2010, 2012, 2014); Big Slide Creek (2008-2010); Caribou Creek (2009-2010, 2012). Hydrometric data collected include discharge, electrical conductivity, temperature and suspended sediment concentration. Data are available in both .xlsx and .csv formats.

2009-2010, 2013 RADARSAT-2 data, Cape Bounty, Melville Island

Paul Treitz, Ashley Rudy & Adam Collingwood
RADARSAT-2 imagery was collected for the Cape Bounty watershed over the summer of 2009 and 2010. Data includes Fine Quad-Pol and Ultra-Fine RADARSAT-2 data, both ascending and descending orbits, and SLC, SGX, and SGF products. Acquisitions were weekly or more frequent throughout the summer season (refer to acquisition parameters in the supplementary documentation). RADARSAT-2 imagery was collected for Cape Bounty watershed over the summer of 2013. Scenes were collected to match previously collected scenes in...

Canadian Coastal Information System (CIS) - Change Mapping Points, Beaufort Sea Coast 1984, 1999 and 2000

Nicole Couture, Paul Fraser & Dustin Whalen
Shore-zone classification data for the Canadian Beaufort Sea coast form part of a GIS database, the Coastal Information System (CIS), developed and maintained by the Geological Survey of Canada (GSC-Atlantic), Natural Resources Canada, at the Bedford Institute of Oceanography in Dartmouth, NS. Coastal attributes in the CIS have been interpreted and mapped from low-level, oblique, aerial photography and video imagery with accompanying audio commentary. The CIS is hierarchical in that coastal forms are classified based...

Coastline, Tuktoyaktuk 1947 to 2008, Beaufort Sea, northern Canada

Sheila Hynes, Steve Solomon & Dustin Whalen
The following dataset represents cliffs, beach and coastlines as they existed along the Beaufort Sea since 1947. These features provide an accurate representation of the land/water interface at a given time and position along the coastline. Aerial photography provided by National Airphoto Library (NAPL) and satellite imagery (Worldview 2 and Quickbird) provided the base layer for the dataset. The 2001 field survey data were used as the control for georeferencing the imagery. Digital coastlines, cliff...

Colour-shaded seafloor relief, Middle Channel 2007, Mackenzie Delta, Beaufort Sea, offshore northern Canada

Dustin Whalen
The data set is an image of colour-shaded sun-illuminated seafloor topography collected from Mackenzie Delta in the Beaufort Sea in 2007 by the Geological Survey of Canada (Atlantic) (GSCA). Data were collected with a SwathPlus Interferometric Sidescan system on Geological Survey of Canada (Atlantic), Multibeam Expedition, Beaufort Explorer 2007306. Depth readings are accurate to within 30 cm in water depths less than 30 m and 1% of water depth in water depths greater than 30...

Avian predator monitoring at Fosheim Peninsula, Ellesmere Island

Canadian Wildlife Service Josée Lefebvre
Abundance of avian predator species is determine every two days through visual counts from a vantage point and line transects from our arrival at the study until our departure. We also monitor nests of avian predators found opportunistically in our study area.

Alexandra Fiord Autostation data

Greg Henry
The year 1998 was the warmest on record in Canada and globally, with particularly pronounced warming anomalies located over the Canadian Arctic in the spring and fall seasons. This warming had major implications for snow, ice and permafrost (the cryosphere) in the North e.g., open water formed earlier than had been previously observed, sea ice extent in the Canadian Arctic in September was 25% less than the previous recorded minimum, and there was above normal...

Yeendoo Nanh Nakhweenjit K'atr'ahanahtyaa: Environmental change and traditional use of the Old Crow Flats in northern Canada

, Brent Wolfe, Christopher Burn, Dorothy Cooley, Duane Froese, Laurie Chan, Michael Pisaric, Murray Humphries & Trevor Lantz
This multidisciplinary project is comprised of eight components focusing on: geology and Paleoenvironments (Froese); hydrology and biology (Wolfe); permafrost (Burn); dendrochronology (Pisaric); vegetation (Lantz); food security (Chan); muskrat (Humphries); and moose (Cooley).

PPS Arctic Canada (Present processes, Past changes, Spatio-temporal variability in the Arctic delimitation zone, Canada)

Karen Harper, Trevor Bell, Frank Berninger, Stephane Boudreau, Ryan Danby, Shawn Donaldson, Nancy Doubleday, Scott Green & Greg Henry
PPS Arctic Canada is a team of more than 170 researchers including 23 co-investigators, 3 post-doctoral fellows, 80 students from high school to graduate level and more than 70 northern residents and elders. Training and northern community involvement have been key components of our research project. Together with international researchers we developed common protocols and collected data during IPY to examine change at the tree line. Our multidisciplinary research team is developing methods for integrating...

The prevalence of Human Papillomavirus and its impact on Cervical Dysplasia in northern Canada

Howard Morrison, Yang Mao, Alberto Severini, Brendan Hanley, Isaac Sobol, Kami Kandola, Muna Ar-Rushdi, Paul Brassard, Tom Wong & Ying Jiang
There were two components in this study: component I- the prevalence of HPV infection; and component II - HPV risk assessment. Component I included study sites in the Northwest Territories (NT), Nunavut (NU), and Labrador region (LB). Component II included study sites in NT and Yukon (YT). In component I, bio-sample collection for HPV testing was incorporated into routine Pap testing and no extra samples were required. All bio-samples were collected by physicians or nurses...

Nitrate, nitrite, phosphate, dissolved silica concentrations (micromol/L) measured in the Beaufort Sea on multiple casts at 8 stations in 2009

Roger Francois, & Jonathan Gagnon
The concentrations of dissolved nutrients (nitrate, nitrate, phosphate, and dissolved silica) were measured on board ship with a nutrient autoanalyzer to complement the hydrographic data. They were measured on samples collected with the Trace Metal Clean Rosette at Station L1 (71°06'N, 139°10'W), L1.5 (73°19'N, 139°23'W), L2 (74°30'N, 137°00'W, L3 (75°17'N, 137°30'W), L1.1 (72°31'N, 136°41'), and S4 (71°11'N, 132°57'W) and on samples collected with the regular ArcticNet rosette at station S1 (69°30'N, 137°59'W), S2 (70°00'N, 138°30'W),...

Teetl'it Gwich'in elder interview transcripts and harvester survey data about Porcupine caribou harvesting, harvesting practices, and perceptions of Porcupine caribou population and health, Fort McPherson, NWT, 2007-2008

Council Of Yukon First Nations Cindy Dickson, Department Of Resource Economics Kristine Wray, Department Of Resource Economics Brenda Parlee, , &
Elders data set consisting of digital audio files and transcripts of interviews wth elders. Harvesters data set consisting of written surveys, and digital audio files and transcripts of interviews with harvesters.

Terminal-Restriction Fragment Length Polymorphism (T-RFLP) analysis of bacterial 16S rRNA genes. Soil samples taken from Long-term Ecological Research (LTER) greenhouse treated and control plots at Toolik Lake, AK; 5 sampling dates.

Suzanne Simard, Julie R. Deslippe, , , Martin Hartmann & William Mohn
In the summer of 2006 and 2007, we collected soils treated with warming by greenhouses since 1989, which are maintained as part of the Arctic Long-term Ecological Research (LTER) site at Toolik Lake, AK (68o38'N, 149o34'W, elevation 760m). Total nucleic acids were extracted from soil samples allowing for the simultaneous assessment of the total and actively growing components of the soil microbial community. We used Terminal Restriction Fragment Length Polymorphism (T-RFLP) analysis of 16S rRNA...

Contaminants analyzed from multiple species of invertebrates, teleosts, elasmobranchs, and marine mammals sampled in Cumberland Sound, 2007-2008

Aaron Fisk, Melissa McKinney, Derek Muir & Gregg Tomy
Samples of mixed zooplankton (mainly Calanus spp.), two benthic invertebrate (scallop Chlamys islandica, snail Buccinum cyaneum), five teleost fish (herring Clupea harengus, capelin Mallotus villosus, char Salvelinus alpines, sculpin Myoxocephalus scorpioides, turbot Reinhardtius hippoglossoides), two elasmobranch fish (arctic skate Amblyraja hyperborea, Greenland shark Somniosus microcephalus), two pinniped (harp seal Pagophilus groenlandicus, ringed seal Pusa hispida) and two cetacean (beluga whale Delphinapterus leucas , narwhal Monodon monoceros) species were collected from Cumberland Sound (Nunavut). Zooplankton were...

Ground penetrating radar data for ice patches in the Mackenzie Mountains, Northwest Territories, 2007-2008

Prince Of Wales Northern Heritage Centre Tom Andrews, Department Of Geography Brian Moorman & Department Of Geography Thomas Muelendyk
Ground penetrating radar data was collected along transects across the ice patches at 250 MHz and 500 MHz frequencies. Traces were collected roughly every 5 cm along the transects with the GPS location and elevation being recorded at each trace location. The data is in a Pulse EKKO format and indicates the thickness of the ice and internal layering. The transects were laid out in a grid manner such that the three dimensional geometry of...

White spruce tree-ring-width data in Old Crow Flats, Yukon Territory, 2007-2008

Lance Nagwan, Trevor J. Porter & Michael F.J. Pisaric
A network of 23 white spruce sites was established in Old Crow Flats, and tree-ring samples were collected from each site using standard dendrochronological techniques. Cores were collected from living trees and cookies were cut from dead trees. Ring-width series were measured from all samples at the Carleton University Paleoecology Laboratory, and mean site chronologies were calculated for each site. Climate-growth relations of each site were assessed. Regional growth patterns were compared against other white...

Vuntut Gwitchin First Nation Oral History transcripts, Old Crow, Yukon, 1997-2008

Lance Nagwan &
The interviews in this database have been collated from both internal and external research projects involving VGFN participation. The interviews have been translated (where necessary) and transcribed in English, and transcripts have been indexed by keyword in a master list.

Phospholipid fatty acid (PLFA) profiles and 13C-enrichment values for 23 PLFAs from rhizosphere, organic and mineral soils surrounding Betula nana, Ledum palustre, and Salix pulchra plants, 4 sampling dates.

Suzanne Simard, Julie R. Deslippe, Per Bengtson & Sue J. Grayston
We tested the influence of three different tundra plant species (Salix pulchra, Betula nana, and Ledum palustre) on the soil microbial community composition in bulk organic, mineral and rhizosphere soils. We used stable isotope techniques to study carbon transfer from plants labeled with 13CO2 in situ to the soil microbial community, and PLFA analysis to test the resulting effect on the microbial community composition.

Évaluation de l'impact du programme d'immunisation avec le vaccin pneumococcique conjugué et le vaccin influenza inactivé chez les enfants du Nunavik

Philippe De Wals, Brigitte Lefèbvre, Hannah Ayukawa, , Martine Six & Ruth Bruno
The evaluation will be carried out by comparing frequency rates for different indicators in three birth cohorts that did not receive 7-PCV or TIV (1994-1996), in six cohorts that received the vaccines but not every dose in the complete vaccination schedule (1997-2002), and in three cohorts that benefited from the routine vaccination program combining 7-PCV and TIV and received the complete schedule (2003-2005). The information sources used will include the provincial hospitalizations database ("fichier Med-Echo"),...

Cliff base positions, Catton Point 1953-1996, Ivvavik National Park, Yukon, northern Canada

Sheila Hynes, Steve Solomon & Dustin Whalen
Field work and airphoto studies were undertaken between 1953-1996 along the Yukon coast of the Beaufort Sea in Ivvavik National Park to determine coastal erosion rates, processes and hazards in relation to archeological and cultural heritage sites, many of which are concentrated along the coast in this region. The work was carried out on behalf of Parks Canada (Canadian Heritage, Western Arctic District, Inuvik) at Niakolik Point, Stokes Point, Catton Point/Ptarmigan Bay, Nunaluk Spit and...

Colour-shaded seafloor relief, McKinley Bay 2009, Beaufort Sea, offshore northern Canada

Dustin Whalen &
The data set is an image of colour-shaded sun-illuminated seafloor topography collected from McKinley Bay in the Beaufort Sea in 2009 by the Canadian Hydrographic Service (CHS) for the Geological Survey of Canada (Atlantic) (GSCA). Data were collected with a Simrad EM3000 system on Geological Survey of Canada (Atlantic), Multibeam Expedition, Nahidik 2009802. Depth readings are accurate to within 30cm in water depths less than 30m and 1% of water depth in water depths greater...

Cliff base, Niakolik Point 1952-1996, Ivvavik National Park, Yukon, northern Canada

Sheila Hynes, Donald L. Forbes & Dustin Whalen
Field work and airphoto studies were undertaken between 1953-1996 along the Yukon coast of the Beaufort Sea in Ivvavik National Park to determine coastal erosion rates, processes and hazards in relation to archeological and cultural heritage sites, many of which are concentrated along the coast in this region. The work was carried out on behalf of Parks Canada (Canadian Heritage, Western Arctic District, Inuvik) at Niakolik Point, Stokes Point, Catton Point/Ptarmigan Bay, Nunaluk Spit and...

Cliff top, Nunaluk Spit 1952-1996, Ivvavik National Park, Yukon, northern Canada

Sheila Hynes, Donald L. Forbes & Dustin Whalen
Field work and airphoto studies were undertaken between 1953-1996 along the Yukon coast of the Beaufort Sea in Ivvavik National Park to determine coastal erosion rates, processes and hazards in relation to archeological and cultural heritage sites, many of which are concentrated along the coast in this region. The work was carried out on behalf of Parks Canada (Canadian Heritage, Western Arctic District, Inuvik) at Niakolik Point, Stokes Point, Catton Point/Ptarmigan Bay, Nunaluk Spit and...

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