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Directory entires that have specified Greenland as one of the geographic regions for the project/activity and are included in the AMAP, ENVINET, SAON and SEARCH directories. Note that the list of regions is not hierarchical, and there is no relation between regions (e.g. a record tagged with Nunavut may not be tagged with Canada). To see the full list of regions, see the regions list. To browse the catalog based on the originating country (leady party), see the list of countries.
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Important progress has been made in recent decades to describe and understand how arctic terrestrial vertebrate interact, especially concerning predator-prey interactions. Indirect interactions between different prey species modulated by shared predators (e.g. Arctic fox) are believed to have important impacts on the structure and/or dynamics of some communities. Yet, our understanding of these types of interactions is still fragmentary. To fill that gap, we will build on ongoing projects exploring related questions in Canada (Marie-Andrée Giroux, Nicolas Lecomte, Joël Bêty) and Greenland (Olivier Gilg, Niels M. Schmidt), while taking advantage of existing networks (ADSN in North America and “Interactions” program in Greenland and Eurasia). The aim of the project is to promote the implementation of several common protocols that will (1) improve each collaborator’s knowledge at the site level and, more importantly, that will (2) be merged across sites and years to improve our understanding of the functioning and the influence of indirect interactions on arctic vertebrate communities in general.
Five types of data have been identified (by the 5 initiators of the project already mentioned above) as being mandatories to answer questions related to this topic. These data sets will be collected using 5 specific protocols described in the following chapters:
To monitor effects of hebivore grazing in established exclosures in west Greenland on diversity of plants and microarthropods in soil. One site in central west Greenland with caribou and one site in southern Greenland with sheep.
Mapping and monitoring of the snow cover with use of satellitte born optical instruments for (1) direct use of observations of climate change and (2) use of observations in climate modelling. Measurements of the snows spectral reflectance and other physical properties.
-Development of methods to enhance the rate of toxin depuration ( detoxification), especially in shellfish species of high economic value and prolonged retention e.g., King Scallops -Understanding the reaction products and metabolic transformations of toxins in shellfish tissues. -Determine the relationship between algal population dynamics ( including free cell and encysted stages ) to seasonal and spatial patterns of toxicity in shellfish populations. -Assess the effects of harmful algae on the various stages in the life history of shellfish ( Larvae, Spat, Adults ). -Investigate sampling frequencies and protocols ( live shellfish sampling ).
-Development of methods to enhance the rate of toxin depuration ( detoxification), especially in shellfish species of high economic value and prolonged retention e.g., King Scallops -Understanding the reaction products and metabolic transformations of toxins in shellfish tissues. -Determine the relationship between algal population dynamics ( including free cell and encysted stages ) to seasonal and spatial patterns of toxicity in shellfish populations. -Assess the effects of harmful algae on the various stages in the life history of shellfish ( Larvae, Spat, Adults ). -Investigate sampling frequencies and protocols ( live shellfish sampling ).
-Quantify changes in ice dynamics and characteristics resulting from the switch in AO phase -Establish a climate record for the region north of Greenland through the retrieval and analysis of sediment cores -Improve an existing dynamic-thermodynamic sea ice model, focusing on the heavily deformed ice common in the region -Relate the region-specific changes which have occurred to the larger-scale Arctic variablity pattern -Place the recent ice and climate variability for this critical region into the context of long term climate record, as reconstructed from sediment cores
The major aim in AMAP is to monitor the levels of anthropogenic contaminants in all major compartments of the Arctic environment, and assess the environmental conditions in the area. This core programme will provide the Danish/Greenlandic authorities with data which make it possible to take part in the international AMAP programme under the Arctic Council. In order to monitor the levels of anthropogenic pollutants, samples will be collected and analysed. The measured components will include heavy metals and persistent organic pollutants in order to allow for spatial and temporal trends in Arctic biota. The program has taken in consideration the recommended importance of persistent organic pollutants and mercury and the importance of the marine food chain. The core program focuses on areas with high population density or areas with high levels of pollutants in the environment.