Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Establishment, Growth, And Early Survival Of Woody Riparian Apecies At A Colorado Gravel Pit, James E. Roelle, Douglas N. Gladwin, Brian S. Cade
Establishment, Growth, And Early Survival Of Woody Riparian Apecies At A Colorado Gravel Pit, James E. Roelle, Douglas N. Gladwin, Brian S. Cade
Western North American Naturalist
Presence of a wetted edge during the period of seedfall was an effective predictor of suitable establishment (defined as germination and survival to the 1st autumn) locations for Populus deltoides subsp. monilifera, Salix amygdaloides, S. exigua, and Tamarix ramosissima seedlings during 3 successive years of a gravel pit revegetation project in Fort Collins, Colorado. At locations predicted to be suitable for establishment, position within the pit (possibly reflecting additional moisture provided by seepage) was a significant factor in determining whether establishment actually occurred. Cover of herbaceous species, which became established at the same time as, or after, woody seedlings, was …
Fishtail Mesa: A Vegetation Resurvey Of Relict Area In Grand Canyon National Park, Arizona, Peter G. Rowlands, Nancy J. Brian
Fishtail Mesa: A Vegetation Resurvey Of Relict Area In Grand Canyon National Park, Arizona, Peter G. Rowlands, Nancy J. Brian
Western North American Naturalist
Relict sites are geographically isolated areas that are undisturbed by direct and indirect human influences. These sites facilitate long-term ecological monitoring by providing a reference for gauging impacts occurring elsewhere. Knowledge gained through comparing vegetation change on matched relict and proximal disturbed areas can help partition the causes of change into natural and human-produced components. Fishtail Mesa in Grand Canyon National Park is a 439-ha relict site that is inaccessible to domestic livestock. Human visitation is infrequent and irregular, and fires have never been suppressed or managed. In 1958, U.S. Forest Service range scientists conducted a survey of Fishtail Mesa …