Data from the Ivotuk Site 1998-1999

PI: Donald Walker
Other Investigators: J.A. Anderson, Erika Edwards, Catharine Copass, Howie Epstein, A. Lillie, A. Moody

MAP: Ivotuk 4 (Moss) Grid Vegetation Map: moss_grid_map.jpg
This file contains a vegetation map of the Ivotuk 4 (Moss) Grid on the Arctic Slope, Alaska. The data were collected on the grid in 1998. MAT stands for Moist Acidic Tundra vegetation type.

Details: The vegetation map was created using an aerial photograph of the grid, as well as ground data. The aerial photograph was rectified using ENVI image processing software and Adobe Photoshop to eliminate oblique view angles and create a representation of an aerial photograph taken perpendicular to the ground. Adobe Photoshop software was used to generate maps from these aerial photographs using functions for selecting ranges of colors. Results of grip point surveys were used to determine the appropriate color range for particular vegetation types. When overlapping color ranges are associated with more than one vegetation type, knowledge of the site from field work was applied to isolate areas and classify each individually. Vegetation mapping and aerial photo rectification was performed by J.A. Anderson and Donald Walker.

For more information or to obtain a copy of this file in another format, please contact Donald Walker (phone:907-474-2460, email: ffdaw@uaf.edu) or Hilmar Meier (phone: 907-474-1540, email: fnham@uaf.edu ) at the University of Alaska, Fairbanks.