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(Article of periodic en Anglais - 2011)

Document title

Rocky substrate and the lower treeline ecotone of Yellowstone's Northern Range

Authors(s) and Affiliation(s)

WHITESIDES C.J. (1) ; BEKKER M.F. (1) ;
(1) Dep. of Geography, Brigham Young Univ., Provo, ETATS-UNIS

Abstract

The AA. present a landscape analysis of the controls over the lower treeline in the Yellowstone National Park Northern Range, specifically to evaluate the relative importance of rocky substrate, north-facing slopes, and riparian zones on the distribution of forested areas and advancement of the treeline. They used GIS software and change detection analysis between 1954 and 2006. The results suggest that weathered rock increases soil coarseness in a landscape dominated by fine glacial till, which improves conditions for seedling establishment by reducing competition with grasses and shrubs sufficiently to overcome the negative influence of dry, nutrient-poor microsites in a moisture-stressed environment

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2011, vol. 32, no4 [pp. 356-373]

Bibliographic references : 4 p.

Collation : 4 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.2747/0272-3646.32.4.356

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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