I56°44 



The Coastal Tundra at Barrow 



56°40' I56°38' 



13 



Limit of 



Mid-Wisconsi 



Transgression \ 



1 J I X 



f4^ llFootprint\ 



\ '^^^^' I Lake V 

 nonN. I 1 



\(Drained)i 

 A , L 



-TI'IS 



--71° 18 



--1\°\1 



FIGURE 1-5. U.S. Tundra Biome intensive re- 

 search area (S-1, S-2, S-4, S-7) and associated 

 landscape features. 1) oldest basin, 2-5) inter- 

 mediate aged basins, 6) youngest basin. Foot- 

 print Lake was drained in 1950 through a bull- 

 dozed trench. 



Site 2, immediately south of Footprint Creek, was chosen for its 

 relatively uniform wet meadow. Control plots and experiments to simu- 

 late natural perturbations, including changes in grazing and nutrient re- 

 gime, were established. 



Site 4, south of site 2, was selected for its microtopographic diversity 

 and included a number of plots that contained representative polygonal 

 terrain. 



These three sites constitute the "Biome research area" referred to in 

 this book. 



Site 7, west of Footprint Creek, contained well-developed, low- 

 centered polygons filled with water that were used for aquatic studies 

 (Hobbie 1980). 



Locations of plots and sample areas within these and related sites 

 are shown on the map in Appendix 2. 



