|Publication Type:||Journal Article|
|Year of Publication:||2006|
|Journal:||Arctic Antarctic & Alpine Research|
|Keywords:|| Ecology: environmental biology - General and methods,  Ecology: environmental biology - Plant,  Cyperaceae,  Gramineae,  Botany: general and systematic - Floristics and distribution, Angiospermae, Biogeography: Population Studies, Carex: genus [Cyperaceae], Cyperaceae: Angiosperms, Environmental Sciences, geographical distribution, Gramineae: Angiosperms, Monocots, Monocotyledones, Plantae, Plants, Poa alpina: species [Gramineae], short-term periglacial process, soil development, sorted patterned ground, Spermatophyta, Spermatophytes, Terrestrial Ecology: Ecology, Trisetum spicatum: species [Gramineae], Vascular plants, vegetation colonization, vegetation development, vegetation succession|
Small (1 < m diameter) sorted patterned ground features were studied on the Little Ice Age forelands of three Jotunheimen glaciers. Patterned ground appears to be most active near the ice margins, declining in intensity of activity with distance from the glaciers. Vegetation and soil development are negligible within patterned ground that is "Recent" (decadal time frame). Significant (P < 0.05) fine scale differences in vegetation and soil development occur within patterned ground on terrain similar to 70 yr in age, with patterned ground borders having higher values of vegetation cover and thicker soils than that in patterned ground centers. With increasing age of terrain and patterned ground, soil development and vegetation encroach inward toward patterned ground centers, implying that a short-term, active periglacial zone exists near the ice margin, decaying with time and glacier retreat. Specifically, terrain that has been deglaciatcd for similar to 70 years and is approximately similar to 350-500 m from the ice margin shows a significant decline in frost activity, allowing for the initiation of pedogenesis and vegetation colonization.