The full list of projects contains the entire database hosted on this portal, across the available directories. The projects and activities (across all directories/catalogs) are also available by country of origin, by geographical region, or by directory.

Displaying: 1 - 4 of 4
1. Role of contaminants in seaduck population decline: metals in oldsquaw

In order to determine the role of contaminants in declining populations of seaducks, it is proposed that: (1) archived samples of Oldsquaw collected from their Canadian arctic breeding grounds be analyzed for Hg, Se and Cu (in liver), Cd (in kidney), Pb (in wing bone), and selected samples be screened for a wider range of metals (in liver), and (2) archived samples of Oldsquaw wing bone be analyzed for stable isotopes (13C/12C; 15N/14N, and 34S/32S) and strontium (Sr) to discriminate whether birds from certain geographical areas of the Arctic are overwintering in freshwater (i.e. Great Lakes) or marine environments.

Populations Heavy metals stable isotopes Exposure Arctic oldsquaw metals
2. Assessment of organochlorines and metal levels in Canadian arctic fox

1) To determine tissue residue levels of organochlorines and metals in arctic fox feeding in or near an arctic coastal environment. 2) To assess whether or not residue levels found in arctic fox pose a potential wildlife health risk. 3) As part of a pilot project, to determine residue levels and assess potential wildlife health risk to wolverines feeding in or near a coastal environment.

Biology Organochlorines Heavy metals stable isotopes Exposure Arctic metals Diet arctic fox wolverine

The project IOANA proposes to better understand the intimate coupling between ozone mixing ratios and particulate nitrate isotopic characteristics. Ozone Depletion Events which occur in Arctic coastal locations shortly after sunrise are a subject of interest per se (scientifically challenging for two decades) but also provide a context in which ozone mixing ratios are highly variable, enabling to characterize the dynamic of correlation and process studies with a resolution of a day. This is a first step towards the use of the isotope tool in reconstructions of the oxidative capacity of the atmosphere. This programme is a preparation of the IPY-OASIS project and propose to coodinate a set of collaborations than will be effective duing the International Polar Year.

Atmospheric processes Sources Ozone Arctic haze Long-range transport Pollution sources Climate change stable isotopes Arctic Ice cores nitrogen nitrate Atmosphere
4. Human and chemical ecology of Arctic pathways by marine pollutants

1. Research area # 2 in the 1998/99 Announcement of Opportunity by CIFAR, "Study of anthropogenic influences on the Western Arctic/Bering Sea Ecosystem", and 2. Research area #4 in the 1998/99 Announcement of Opportunity by CIFAR, "Contaminant inputs, fate and effects on the ecosystem" specifically addressing objectives a-c, except "effects." a. "Determine pathways/linkages of contaminant accumulation in species that are consumed by top predators, including humans, and determine sub-regional differences in contaminant levels..." b. "Use an ecosystems approach to determine the effects of contaminants on food web and biomagnification." c. "Encourage local community participation in planning and implementing research strategies." The objectives of Phase I, Human Ecology Research are to: 1. Document reliance by indigenous arctic marine communities in Canada, Alaska and Russia on arctic resources at risk from chemical pollutants; and, 2. Incorporate traditional knowledge systems of subsistence harvesting. The human ecology components of the project were conducted within the frameworks of indigenous environmental knowledge and community participation. Using participatory mapping techniques, semi-structured interviews and the direct participation of community members in research design, data collection and implementation, research and data collection on the human ecology of indigenous arctic marine communities was undertaken in the communities of Holman, NWT (1998), Wainwright, Alaska (1999), and is underway in Novoe Chaplino, Russia. (2000).

Biology Organochlorines PCBs Fish Indigenous people Contaminant transport Stable isotopes Exposure Arctic Persistent organic pollutants (POPs) Food webs Ecosystems Marine mammals