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Specific tests of autosuccession (equivalent to non-replacement change in species composition) are made, in which pioneer communities on roadside verges and areas of patterned ground disturbed by cryoturbation are compared with mature communities on a bioclimatic gradient from sub-alpine woodland (850 m a.s.l) to high-alpine fjellfield (2200 m a.s.l). Autosuccession is quantified for the first time...
Rock‐slope failures (RSFs) constitute significant natural hazards, but the geophysical processes that control their timing are poorly understood. However, robust chronologies can provide valuable information on the environmental controls on RSF occurrence: information that can inform models of RSF activity in response to climatic forcing. This study uses Schmidt‐hammer exposure‐age dating (SHD) of...
This regional inventory and study of a globally uncommon landform type reveals similarities in form and process between craters produced by snow-avalanche and meteorite impacts. Fifty-two snow-avalanche impact craters (mean diameter 85m, range 10–185m) were investigated through field research, aerial photographic interpretation and analysis of topographic maps. The craters are sited on valley bottoms...
An index of the degree of rock-surface microweathering based on Schmidt hammer R-values is developed for use in the field without laboratory testing. A series of indices – I2 to In, where n is the number of successive blows with the hammer – is first proposed based on the assumption that the R-values derived from successive impacts on the same spot on a weathered rock surface converge on the value...
The first 33years of primary geo-ecological succession is investigated in the pioneer zone of the Storbreen glacier foreland using the chronosequence approach. Pitfall trapping of invertebrates and the sampling of higher and lower plants and habitat factors from quadrats were used on three replicate transects across a till plain accurately dated by annually monitored glacier front variations combined...
Pronival (protalus) ramparts at three sites in southern Norway—Smørbotn, Alnesreset and Nystølsnovi—are assessed in relation to evidence of snow-avalanche activity, and dated using Schmidt-hammer exposure-age dating (SHD). The position of each rampart suggests frequent snow avalanches played a major role in rampart formation. The pronival ramparts at Smørbotn and Nystølsnovi are characterized by a...
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