67 Works

Killer whale (Orcinus orca) photo identification database, 2013-2015

Jim Roth, Steve Ferguson & Cory Matthews
Killer whales are located by boat, usually after sightings reports are received from local hunters who tell us where to look for them. During all killer whale encounters, we photograph individual whales using digital SLR cameras. Images were collected using three Canon camera bodies (two EOS-ID Mark IV Digital 16.7 megapixel, and one EOS-IDX 18.0 megapixel) fixed with any of four Canon lenses (70-200 mm, 16-35 mm, 24-70 mm, or a 400 mm fixed lens)....

Geo-referenced digital photographs and videos with associated GPS waypoints and tracks for terrestrial ecosystem types on the northern shore of Greiner Lake, Cambridge Bay, Nunavut, 2015

Donald McLennan & Johann Wagner
Geo-referenced digital photographs and videos with the associated GPS waypoints and tracks of various terrestrial ecosystem types have been taken during the summer of 2015 on the northern shore of Greiner Lake, Cambridge Bay, Nunavut. The photographs and videos, in combination with additional GPS waypoints and tracks, characterize site, soil and vegetation characteristics of the arctic landscape. The geo-referenced photographs and videos, as well as the GPS data will be entered in a GIS software...

Chironomid-environment relations in northern North America

Andrew Medeiros, Konrad Gajewski, Erin Barley, Marie-Claude Fortin, Isabelle Larocque-Tobler, David Porinchu & Sue Wilson
Chironomid assemblages from the uppermost sediments of 435 lakes spanning northern North America were compared to environmental parameters using direct gradient analysis. This large calibration set was merged from several previously developed regional datasets, and increases the number of modern analogues that are available for use for paleoenvironmental interpretations in this region. Air temperature explained the largest amount of variation in the chironomid assemblages with several other environmental factors accounting for statistical significant amounts of...

CTD sampling in Cambridge Bay, Dease Strait and Queen Maud Gulf, Nunavut

Donald McLennan, Casey Hubert, C.J. Mundy & Johann Wagner
Conductivity, temperature, as well as other properties at different depths are important characteristics of seawater, with significant effects on the ecology of the ocean in the Arctic. To gain an idea about these seawater properties south of Victoria Island, CTD samplings have been performed from the Martin Bergmann research vessel in the Cambridge Bay, Dease Strait and Queen Maud Gulf by CJ Mundy of the University of Manitoba. Additionally, in order to determine the ideal...

Gastropod surveys in south-eastern Victoria Island

Josh Sullivan, Donald McLennan, Susan Kutz & Matilde Tomaselli
As the range of the muskox lungworms Umingmakstrongylus pallikuukensis and Varestrongylus nov. sp. on Victoria Island, Nunavut have recently expanded, a critical look at the distribution and abundance of their gastropod intermediate hosts is imperative for identifying regions susceptible to future parasite colonization. During July-September 2013, we sampled for gastropods at five terrestrial sites and five freshwater sites on south-eastern Victoria Island, near the hamlet of Cambridge Bay. At each terrestrial site four habitats were...

International Arctic Buoy Programme (IABP) Charts 1979-1998

Polar Science Center And Collaborators
The Participants of the IABP work together to maintain a network of drifting buoys in the Arctic Ocean to provide meteorological and oceanographic data for real-time operational requirements and research purposes including support to the World Climate Research Programme (WCRP) and the World Weather Watch (WWW) Programme. The IABP measurements include the following variables: Sea level pressure, Surface air temperature, Sea ice motion, Snow depth, Sea ice thickness, Sea ice temperatures, Ocean temperatures and Ocean...

The distribution and abundance of parasites in harvested wildlife from the Canadian North : a review

Virginia León-Règagnon, Ian Hogg & Paul Hebert
Parasites are key components of arctic ecosystems. The current rate of climate and landscape changes in the Arctic is expected to alter host-parasite interactions, creating a significant concern for the sustainability of arctic vertebrates. In addition to direct effects on host populations, changes in parasite loads on wildlife can have significant impacts on the people who depend on these organisms for food. Parasites play important roles in maintaining ecosystem stability through the regulation of host...

Gridded climate data for Labrador and Northern Québec, 1948-2016

Robert Way, Philip Bonnaventure & Antoni Lewkowicz
Detailed climatological grids are needed for many applications, including permafrost prediction, ecological modelling and infrastructure planning. This study describes the creation of moderate-resolution gridded climate datasets covering the entire Labrador-Ungava region (50°-63°N) for a series of climate indices, including monthly air temperature, annual air temperature, freezing degree-days (FDDs) and thawing degree-days. Using a recently developed spatiotemporal infilling technique, temporally consistent climate grids spanning the 1948-2016 period were derived at a monthly resolution. Comparison against within-sample...

Northern Manitoba Regional Snow Survey for AMSR-E Field Validation

Dr. Chris Derksen Chris.Derksen@Ec.Gc.Ca
Snow water equivalent (SWE), depth, and density measurements are available from an approximately 500 km sampling transect across northern Manitoba, between the communities of Thompson, Gillam, and Churchill. Sampling occurred at 10 km intervals between Thompson and Gillam, and approximately 15 km intervals between Gillam and Churchill. An initial survey was conducted in late November 2003, with all sites revisited in early March 2004. The data provided at this time are depth, density, and SWE...

Solar Radiation Data in Cambridge Bay - CHARS Renewable and Alternative Energy priority

Meaghan Bennett, Michael Brown & Crystal Qaumariaq
Two pyranometers were installed on a tripod, one horizontally and one at 69 degrees to the horizontal (equal to the latitude). A snow depth sensor was also installed on the tripod. A solar tracker with a shaded pyranometer and pyrheliometer, in order to measure diffuse and direct solar radiation, is planned for spring 2015. Global horizontal and tilted radiation measured at 1 minute intervals.

Ice Thickness Program - Ice Thickness and Snow Depth Measurements

Environment Canada's Meteorological Service, Queen's University, St-Lawrence Seaway Authority & Trent University
The Ice Thickness Program Collection contains ice thickness and snow depth measurements for 11 sites. Measurements are taken at approximately the same location every year on a weekly basis, starting after freeze-up when the ice is safe to walk on, and continuing until break-up or when the ice becomes unsafe. The location is selected close to shore, but over a depth of water which will exceed the maximum ice thickness.

Active acoustic data from Kongsfjorden, Svalbard

Jorgen Berge, Maxime Geoffroy & Geir Johnsen
The presence of Arctic pelagic organisms during the polar night is poorly documented, especially as boreal Atlantic species are expanding their range northward. Patterns of diel vertical migration (DVM) of crustaceans enhancing the biological pump are characteristic, yet poorly known processes of high latitude fjords of Svalbard. This dataset was collected in Kongsfjorden, Svalbard, during January 2017 to document the distribution of pelagic organisms using acoustic instruments. An automated surface vehicle was equipped with an...

Discharge and water temperatures of water track seeps in Ward Hunt Island, for 2013 and 2016

Daniel Fortier, Michel Paquette & Warwick Vincent
Water tracks are often the principal flow pathways in permafrost affected areas, and their hydrological functions influence slope physical and biogeochemical processes. In this dataset, we measured the flow of water though seeping water track networks and at the front of a perennial snowdrift in the Canadian High Arctic, showing they all possessed a glacio-nival discharge regime. Flow production mechanisms at this polar desert site included saturation overland flow, throughflow and infiltration excess overland flow....

Patterns of shrub abundance and relationships with other plant types within the forest-tundra ecotone in northern Canada

Karen Harper, Amanda Lavallee & Pavel Dodonov
Throughout the forest-tundra ecotone where trees and tall shrubs are becoming more abundant, knowledge of associations between shrubs and surrounding vegetation could inform predictions of their changing relationships. We assessed shrubs in 1 x 1 m contiguous quadrats along two ~450 m transects across tundra and ecotone landscapes near Churchill, Canada to determine patterns in relation to lakeshore edges, soil pH, microtopography, and other plant groups. We used wavelet analysis to assess patterns and generalized...

Long-term monitoring of trace metals and persistent organic pollutants in lake trout from Kusawa Lake and Lake Laberge, Yukon

Mary Gamberg, Gary Stern, Oliver Barker, Deb Fulmer, Monica Krieger, James MacDonald, Derek Muir, Darell Otto, Dave Sembsmoen & Xiaowa Wang
This project has been monitoring contaminants in lake trout from Lake Laberge and Kusawa Lake in the Yukon, since 1993, and annually since 2001. In the fall of 2018 and early winter of 2019, 15 lake trout were collected from Kusawa Lake and 21 from Lake Laberge. Otoliths were aged and liver and muscle samples from these fish are currently being analyzed for a suite of elements, new contaminants (fluorinated and brominated compounds) and older...

CASES 0305-Franklin Bay CTD data

Yves Gratton, Pascal Guillot, Annie Simard & Marie-Emmanuelle Rail
The CTD data was obtained during LEG 03 of the 2003 CASES scientific cruise #0305. This Leg was carried out from November 26th 2003 to January 6th 2004 aboard the CCGS Amundsen. There were 61 CTD casts in Leg 3. All of these casts, associated to the overwintering oceanographic station, are located in Beaufort Sea research area. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird 911 probe), oxygen (Sea-Bird 43), pH...

Vascular synphenology of plant communities around Cambridge Bay, Victoria Island, Nunavut during the growing season of 2015

Donald McLennan & Johann Wagner
The phenology (the timing of life cycle events) of the most representative vascular species in ecosystems around Cambridge Bay (synphenology) has been recorded during the growing season of 2015, from mid-June to beginning of September. Vegetative (leaf) as well as generative (flower and seed) development in shrubby, herbaceous and graminoid plant species have been assessed at weekly intervals using a phenological key with 11 phenological stages, from the development of the first leaf/first floral bud...

IceWatch Canada database

Environment Canada, Nature Canada & Volunteer Observers
The IceWatch Program database is populated with information submitted by volunteer citizen science observers from across Canada. They collect data following a standardized protocol for annually recording the date their water body of interest freezes and stays frozen (ice-on) and the date the water body thaws and stays thawed (ice-off). Protocol training is provided by on-line instructions. Data are submitted either on-line or in paper format into a national database. The program was created by...

A high resolution multi-proxy record of pronounced recent environmental change at Baker Lake, Nunavut

Roberto Quinlan, Andrew Medeiros, Sarah Finkelstein & Charlotte Friel
Analyses of fossilized remains of chironomids and diatoms were conducted on a sediment core of 20 cm in length sampled at 0.5-cm intervals. A new surface sediment training set of subfossil chironomid assemblages from 65 lakes across the eastern Canadian Arctic generated a robust (r2 jack = 0.79) surface water paleotemperature transfer function. The transfer function was applied to stratigraphic intervals from the Baker Lake sediment core to generate a paleotemperature reconstruction of sub-decadal resolution....

Baker Lake, Nunavut, Limnology Data May 2016

Richard Nesbitt
Water column profiles of temperature, dissolved oxygen, conductivity and pH were measured at 1-m intervals through the water column from the surface to near the lake bottom at six locations on Baker Lake. Water quality samples were collected for analysis of general water chemistry, trace metals, cyanide, radionuclides and phytoplankton from a variety of depths at a subset of seven sites. The seven sites included; Baker-1: Baker Lake - bay (lat: 64°16'58.9"N, long: 95°56'49.8"W), Baker-2:...

CASES 0303-Northern Baffin Bay CTD data

Yves Gratton & Jean-Éric Tremblay
The CTD data was obtained during LEG 01 of the 2003 CASES scientific cruise #0303. This Leg was carried out from September 8th 2003 to October 15th 2003 aboard the CCGS Amundsen. There were 37 CTD casts in Leg 1. One cast, associated to 1 oceanographic station, is located in the Northern Baffin Bay research area. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird 911 probe), oxygen (Sea-Bird 43), fluorescence (Seapoint...

Vascular synphenology of plant communities around Cambridge Bay, Victoria Island, Nunavut during the growing season of 2014

Donald McLennan & Angulalik Pedersen
The phenology (the timing of life cycle events) of the most representative vascular species in ecosystems around Cambridge Bay (synphenology) has been recorded during the growing season of 2014, during the months of June and July. The different phenological stages of vegetative (leaf) and generative (flower and seed) development of selected plant species were documented by digital photographs. No phenology stage were attributed to the plants, only photos are provided as data. The phenological development...

Land cover map along the Inuvik-Tuktoyaktuk Highway corridor

Yu Zhang
This land cover map was developed using isodata unsupervised classification method based on two SPOT 4 scenes (both acquired on 4 September 2006) and one SPOT 5 scene (acquired on 27 August 2007). The ITH corridor was classified into 14 land cover types at 20 m spatial resolution. CODE DESCRIPTIONS: 0-Water bodies or outside the map area; 1-Forest dominated by coniferous trees, mainly spruce; 2-Forest dominated by deciduous trees; 3-Shrub with sparse trees; 4-High and...

Preliminary freshwater sampling of selected streams in the watershed of Greiner Lake, Cambridge Bay, Nunavut.

Donald McLennan, Ioan Wagner & Melissa Lafrenière
Greiner Lake and its watershed, and therefore the properties of their waters, have a great importance to the local economy of Cambridge Bay, Nunavut, by the commercial arctic char fishery that exists here. As part of a preliminary investigation, the freshwater of streams running between lakes and ponds of the watershed, and from Greiner Lake to the ocean, have been sampled by performing measurements of pH, temperature, conductivity, TDS, as well as by collecting water...

Historical ice database (lakes, rivers, landfast ice sites)

Laval University Claude R. Duguay
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...

Registration Year

  • 2016
    48
  • 2017
    4
  • 2018
    6
  • 2019
    9

Resource Types

  • Dataset
    67