Lichens as indicators of trace-element air pollution in the environment and environmental controls on plant species richness and composition along an arctic river

Regions: Kitikmeot, Nunavut

Tags: contaminants, biology, lichen, soil, vegetation, hydrology, geography

Principal Investigator: Gould, William (5)
Licence Number: 12473
Organization: University of Colorado
Licensed Year(s): 1994 1993 1992 1991 1990
Issued: Jan 01, 1993
Project Team: J. Dunn, student assistants

Objective(s): To collect lichens for laboratory analyses in order to determine the types and amounts of contaminants that have been introduced into the arctic ecosystem by means of long-distance air transport and assimilated by lichens; to examine plant communities found along the Hood River in order to get an understanding of the effects of climate, geography, hydrology and soils on vegetation.

Project Description: Project 1: Small samples of lichens will be collected from approximately 20 sites located along the Hood River and analyzed for contaminants. Lichens are good indicators of the types of air-borne contaminants that have been carried north to the arctic since they absorb their nutrients from the air. Project 2: The researcher will examine plant communities along the Hood River in order to study the effects of climate, geography, hydrology and soils on plants.