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Early detection and trend detection of invasive non-native plant species comprise two of the Sonoran Desert Network Inventory and Monitoring Program's vital signs. Baseline information on the presence, location, and abundance of invasive non-native plant species is necessary to accomplish two goals: (1) to identify which invasive non-native species are not yet present in the park (early detection monitoring); and (2) to map the spatial location, distribution, and abundance of those species that already occur in the park as the basis for future trend assessment.
Drawings By Barton A. Wright. With Keys For The Identification Of Species.
Excerpt from A Comparison of Small Mammal Communities at Montezuma Castle National Monument We Chose two locations within Montezuma Castle National Monument to establish live-trapping grids, randomly selecting two locations from avail able riparian floodplain strips with adjacent mes quite habitat using aerial photographs. The floodplain grids were situated adjacent to Wet Bea ver Creek about 20-25 m from the stream bank with the rows running parallel and columns run ning at right angles to the bank.we placed mesquite grids 50 m above and parallel to the floodplain grids (figure Grids contained 100 trap stations spaced 10 m apart (90 by 90 meters or 081 hectares). Each grid encompassed a distinct habitat type.we employed this particular study design to determine if significant animal dispersal from one habitat to another was occurring between sampling periods. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.