246 Works

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.

Monitoring the relative abundance of bird and mammal species at Fosheim Peninsula, Ellesmere Island

Canadian Wildlife Service Josée Lefebvre
The relative abundance of species is recorded as the number of individuals seen per hour spent in the field per observer. Each observer record daily the animal species encountered in the field and the number of individuals observed. To correct for any potential biases the activities and mode of transportation of observers is also taken into account. We also monitor the nests of bird species that are not part of our long-term monitoring and are...

Long-term monitoring of goose forage plant community standing crop on Akimiski Island, Nunavut

Kenneth F. Abraham
Monitoring of the standing crop or primary production of the main goose forage species has been conducted since 1997. Temporary exclosures are erected seasonally to allow comparison of grazed and ungrazed swards of Puccinelia phyrganodes and Festuca rubra. Samples are collected at 5 sites along the north shore, usually at the beginning, middle and end of the growing season, but in some years every 10 days. Other descriptive or experimental work is conducted in concert...

Long-term monitoring of the cycles and success of breeding activity and habitat of shorebirds on Akimiski Island, Nunavut

Kenneth F. Abraham & Erica Nol
A study of semipalmated plovers was initiated in 2002 and is ongoing. Nesting ecology studies include ground searches for nests and monitoring of nests. We record location, nest timing, nest success, habitat characterization at multiple scales, foraging habitats and food supplies. We also band adults and young and follow histories of return, pair membership, etc. of these birds. All data are spatially referenced. ** Data from the IPY years 2007-2009 are available for download. If...

Monitoring of the terrestrial food web dynamics on Akimiski Island, Nunavut

Kenneth F. Abraham
Following ArcticWOLVES protocol, 1-cm3 tissue samples are dissected from freshly dead animals found opportunistically. One large wing feather, or numerous smaller body feathers are taken from avian prey species, and 1 ml of egg (yolk and albumin mixed) are collected from abandoned nests. From mammalian species, a 2 cm2 section of fur is collected. ** If data are downloaded and used for analyses, it would greatly be appreciated that the principal investigator be informed.

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...

Water column physico-chemical profiles of lakes and fiords along the northern coastline of Ellesmere Island (Ward Hunt Island observatory)

Warwick Vincent, Denis Sarrazin, Andrew Hamilton, Derek Mueller, Dermot Antoniades, Julie Veillette, Luke Copland, Marie Lionard, Sophie Charvet & Sébastien Bourget
This dataset includes physico-chemical profiling records from lakes and fiords along the northern coastline of Ellesmere Island. Measured parameters (conductivity, temperature, salinity, total dissolved solids, pH, oxidation reduction potential, turbidity, dissolved oxygen) varied according to the instruments used (mainly RBR XR-420-CTD, RBR XR-620-CTD, Hydrolab Surveyor 3 and Hydrolab DS5X). This dataset spans from 1954 until 2012. Data prior to 1999 is from historical reports and published data. The most recent data was collected by the...

Long-term monitoring of breeding activity of Greater Snow Geese on Bylot Island, Nunavut

Gilles Gauthier, Marie-Christine Cadieux &
We are monitoring the nesting activity of Greater Snow Geese. We find nests through systematic searches of both fixed and random plots throughout the goose colony. Nests of other goose species are also monitored opportunistically. All nests found are positioned with a GPS and revisited several times to determine nesting density, laying date, clutch size, hatching date and nesting success. Young are marked with web tags at hatch. During brood-rearing, family size is determined periodically....

Long-term monitoring of the cycles and success of breeding activity of shorebirds on Bylot Island, Nunavut

Joël Bêty &
We are monitoring the nesting activity of shorebirds on the island in 2 areas distant of approximately 30 km. We are conducting regular searches throughout the breeding season using the single observer and rope-drag nest searching technique. Every shorebird nests found are monitored throughout the breeding season but the most abundant species are Baird's and White-rumped sandpipers and American golden plovers. Date of nest initiation is estimated for each nest using the egg flotation technique....

Long-term monitoring of plant net primary production, flowering times and goose grazing impact on vegetation of the Cape Churchill Peninsula, Manitoba

Robert L. Jefferies, Emma Horrigan & Robert F. Rockwell
Measurements were taken of above- and below-ground standing crop in wet sedge meadows and an intertidal salt marsh in grazed and ungrazed plots treated with nutrients (NPC, NP, C, control). Plot sizes were 50 cm x 50 cm (n = 3 or 5). The nutrient content of the plant samples will be analyzed and the results of the dry weight of biomass will be used to estimate net primary production. Plots are harvested in early...

Monitoring of breeding activity of Long-tailed Jaegers at Alert, Nunavut

R.I. Guy Morrison
We are monitoring the nesting activity of Long-tailed Jaegers. We find nests through either systematic searches or opportunistically. All nests found are positioned with a GPS and revisited during the breeding period to determine laying date, clutch size, hatching date and fledging success.

ArcticNet - CFL - Arctic SOLAS 0706c - Beaufort Sea CTD data

, & Janin Amélie
The CTD data was obtained during the 2007-2008 ArcticNet scientific cruise #0706. The data were collected from October 15 to November 6, 2007, aboard the CCGS Amundsen. There were 108 casts, associated to 78 oceanographic stations, in the Beaufort Sea. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird SBE-9plus), dissolved oxygen (Sea-Bird SBE-43), pH (Sea-Bird SBE-18-I), fluorescence (Seapoint chlorophyll fluorometer), nitrate concentration (Satlantic MBARI-ISUS 5T), transmittance (Wetlabs C-Star transmissometer), light intensity...

CFL 0707 - Beaufort Sea CTD data

, & Rail Marie-Emmanuelle
The CTD data was obtained during the 2007-2008 scientific cruise #0707 within the framework of the Circumpolar Flaw Lead Study (CFL). This program included a year round sampling expedition to study the air-sea interactions occurring in the ice-free sections of the southern Beaufort Sea and Amundsen Gulf. The data were collected from November 10 to December 18, 2007, aboard the CCGS Amundsen. There were 105 casts, associated to 16 oceanographic stations, in the Beaufort Sea...

Particle-associated microbial community dynamics in the Southern Beaufort Sea

Jody Deming, Shelly Carpenter, Eric Collins, Marcela Ewert-Sarmiento, Colleen Kellogg & Min Lin
Our project examines the role that microbes play in attenuating particle flux on Arctic Shelves. We are coupling geochemical and microbiological analyses in a joint effort, with Kirk Cochran's lab at Stony Brook University in New York, to examine particle flux, the diversity and extracellular enzymatic (hydrolytic) activities of microbes associated with particles of different size classes, and corresponding chemical composition and likely source (marine or terrestrial) of the POM. Our specific objectives are threefold:...

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).

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"),...

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...

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...

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...

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.

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.

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...

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