10 - 



Depression 



Mound 



I,. 



Peot 



Bank 



Control 



Scale 

 Chonge - 



I I I I I t__l I I I I I i I L^J 1 L 



0.2 0,4 6 8 10 12 14 



_AI 1 1_ 



"2 3 4 



(North) 



Distonce. m 

 a Plot 306 



10 



.u - .- -' / 



IV 



\_ 



^ 



I I I I I I I I I I I I I I I I < I L 



0.2 0.4 6 8 1.0 1.2 1.4 



(North) Distance, m 



b Plot 303 



I 6' 2 4 



10 



20 



\. 



I I I I I I I I I I I I L 



J M.-J L 



2 0.4 6 8 1.0 1.2 1.4 I .6 2 4 



(North) Distonce, m 



c Plot 305 



20 



Date 27 Aug '70 



70 I I 1 I 1 I I 1 I I I I I I I I U^J L_ 



02 04 06 08 10 1.2 1.4 1624 



(North) 



Distonce, m 

 d Thaw Depth 



Figure 24. Cross sections and thaw profile under three sections 

 of the weasel tracks. 



quantity of the previous season's litter in a more favorable environment including neutral pH, 

 higher temperature, more favorable moisture, maximum soil -substrate contact and/ or higher con- 

 centrations of inorganic nutrients. Under such conditions less litter would accumulate on the soil 

 surface at a slower rate. Oxygen saturation profiles of the track soil compared to those of the con- 

 trol plots indicate more anaerobic conditions in the track: 



68 



