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


mnt_grid_map_point_data.jpeg
MAP: Ivotuk 3 (MNT) Grid Vegetation Map with Vegetation and 
Microsite Point Data
This file contains a vegetation map (with vegetation and 
microsite data overlayed) of the Ivotuk 3 (MNT) Grid on the 
Arctic Slope, Alaska. The data were collected on the grid in 
1998. MNT stands for Moist Nonacidic 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.