201 
Appendix Table 10 
(Walker, S., Pers. Comm.). Distribution of Dryas integrifolia, Eriophorum angustifolium and 
Carex aquatilis through vegetation types making up the continuum at Prudhoe Bay. Mean 
cover score and frequency for 10 quadrants randomly selected from each vegetation type. 
Webber/Walker Vegetation Type 
Plant species Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 
Dryas integrifolia 48.7(100) 59.8(100) 20(90) 
Eriophorum angustifolium 2.4(40) 11.0(80) 11.6(90) 23.2(90) 7.5(70) 
Carex aquatilis 4.0(40) 11.2(60) 17.5(100) 19.0(100) 16.5(80) 
Comments from Walker: 
1. Type 2 may be equivalent to Skogland’s Dryas integrifolia community, but Skogland may have been ignoring 
crustose lichens, which we use as an indicator for Type 1. Probably, plots were in both of Types 1 and 2. Also 
plot No. 34 was probably what we would call Type 9—snowbed community. 
2. Although we show greatest coverage by Eriophorum angustifolium in Type 4, to say that Type 4 is equivalent to 
Skogland’s “Eriophorum angustifolium” may be in error since the presence of Dryas is to be found in analyses of 
nearly all of his plots; we rarely recorded much Dryas in Type 4. Skogland’s Eriophorum angustifolium marsh 
may correspond more closely to Type 3, but it should not be designated as “polygon marsh.”" 
3. Skogland’s Carex aquatilis marshes are probably a mixture of our Types 4 and 5. Type 4 is relatively dry by the 
end of summer (i.e., there’s little or no standing water); whereas, Type 5 has standing water throughout the 
summer. These are both truly marshy types. 
The Dupontia fisheri meadows seem to correspond most closely to Type 12 vegetation which was found mostly 
along streambanks and the edges of some lakes. It is not very common and probably does not fit into the generalized 
moisture continuum which occurs over the majority of the region. 
