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Aga circumpolar elevation 2003

Circumpolar Arctic Elevation Map

Elevation strongly influences soil moisture and patterns of tundra plant communities. Areas less than 100 m above sea level were separated to show low-elevation plains. Areas above 100 m elevation were divided into 333-m intervals to show decreases of about 2 °C, as predicted by the adiabatic lapse rate of 6 °C per 1000 m. This corresponds to the change in mean July temperature between Bioclimate Subzones.

Vegetation in mountainous regions changes with elevation, forming distinct elevational belts which correspond approximately to bioclimatic subzones. Vegetation is also modified by local topographic effects such as slope, aspect, and cold-air drainage. This heterogeneity was too detailed to map at this scale, so vegetation in mountainous areas was mapped as a complex, using a diagonal hachure pattern. The background color and the orientation of the hatching represent the pH of the dominant bedrock (magenta for non-carbonate bedrock including sandstone and granite, purple for carbonate bedrock including limestone and dolomite). The color of the hatching represents the bioclimate subzone at the lowest elevation within the polygon (yellow for Subzone D, red for Subzone E).

Back to Circumpolar Arctic Vegetation Map

Go to Website Link:: Toolik Arctic Geobotanical Atlas below for details on legend units, photos of map units and plant species, glossary, bibliography and links to ground data.

Map Themes: AVHRR Biomass 2010, AVHRR Biomass Trend 1982-2010, AVHRR False Color-Infrared 1993-1995, AVHRR NDVI 1993-1995, AVHRR NDVI Trend 1982-2010, AVHRR Summer Warmth Index 1982-2003, Bioclimate Subzone, Coastline and Treeline, Elevation, Floristic Provinces, Lake Cover, Landscape, Landscape Age, Substrate pH, Vegetation Layer

References

Elvebakk, A. 1999. Bioclimate delimitation and subdivisions of the Arctic. Pages 81-112 in I. Nordal and V. Y. Razzhivin, editors. The Species Concept in the High North - A Panarctic Flora Initiative. The Norwegian Academy of Science and Letters, Oslo.

Yurtsev, B. A. 1994. Floristic divisions of the Arctic. Journal of Vegetation Science 5:765-776.

Complete

Data and Resources

  • Download

    Download :: GIS Data

    aga_circumpolar_elevation_2003_gis1.zip (80.2 MB)

  • Download

    Download :: Map Image

    aga_circumpolar_elevation_2003.jpg (1.78 MB)

  • View website

    Website :: Toolik Arctic Geobotanical Atlas

    http://www.arcticatlas.org/maps/themes/cp/cpel

Status: Complete
Type: Data
Data Types: Map
Primary Contacts
Name: Martha Raynolds
Email: mkraynolds@alaska.edu
Other Contacts
Name: Arve Elvebakk
Name: Alaska Geobotany Center (AGC)
Email: uaf-agc@alaska.edu
Primary Organizations
Type
Alaska Geobotany Center
Academic

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Circumpolar Arctic Vegetation Map
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Direct Record Link
http://agc.glynx.gina.alaska.edu/catalog/entries/5518-circumpolar-arctic-elevation-map