ABSTRACTS / RESUMES - Comitato Glaciologico Italiano

ple monitoring sites (tesserae) and 12 additional test sites
were set up throuout the draianage basin. The here important
characteristics of the tesserae are given in the table below.
Although the landscape of the catchment looks very homogeneous
on the first look, the test sites show major differerences
in their ecological behaviour, as well in static as dynamic
(seasonal) termes. Therefore, the topic of this paper
is to demonstrate the influence of structure variables, like
relief, substrate, soil moisture, vegetation, surface flow and
interflow, on the modification of geoecological conditions
in the high arctic tundra.
The amount and chemistry of soil water from the test sites
vary heavily from each other. This is not only depending
on the structure variables themselves, but also on the dimension
under investigation. One geoecological varibale
can vary within a reach of a few centimeters, but shows similar
results for a larger area.
test sites Tll TI2 TIS TI3 TI4
[m]a.s.l. 50 85 145 355
relief convex/concave smoderate convex shighflatlandareas meltwaterchannel on top of an
littlesnowvalley waterchannel (lowinclined) end moraine
microrelief mudpits covered mudpits solifluction lobes Mudpits,soliflucperiglacial
soil with lichentundra no/minor tion terrasses
pattern and Taimyr- periglacial soil smallpolygene
polygones pattern
substrat(genetic) marinesediments lodgement till lodgement till till (manyclasts) clasts
soil type CelieCambisol GelicCambisol CelieRegosol CelieLeptosol
(FAD) (poorlydeveloped)
soil depth. [em] 60/70 25/30 1I0 30/40 no soilexisting
max. depth of 141/25.7.90 162/25.7.90 140/16.8.90 147/07.8.90
activelayer[em]/ 109/11.7.91 131 /18.7.91 131 /10.8.91 129/10.8.91
date of year 1ll / 05.8.92 1I4/05.8.92 132/05.8.92 145/05.8.92
soil tension dry wet(allsummer) wet(allsummer) dried up heavily
e [cmWS] 262 134 70 373
maximal [cmWS] 588 303 144 893
vegetation covers the whole smallpatternof moos tundra moos tundra lichen
(cover) Dryas octopetsls coveris almost cover