Download or read book Landscape Fire History and Age Structure Patterns in the Sky Islands of Southeastern Arizona written by Jose Martin Iniguez and published by . This book was released on 2006 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Landscape Fire History and Age Structure Patterns in the Sky Islands of Southeastern Aizona written by Jose M. Iniguez and published by . This book was released on 2006 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: At regional scales climate patterns (e.g., interannual wet-dry cycles) result in high spatial fire synchrony among Southwest forests. However, in the"Sky Island"forests of southeastern Arizona spatial and temporal patterns of fire history and tree age structure at landscape levels (i.e., within mountain ranges) are relatively unknown and therefore the focus of this study. In the Santa Catalina Mountains we reconstructed the fire history on a 2,900-hectare study area with two distinct landscapes, Butterfly Peak (BP) and Rose Canyon (RC) using 2-hectare"points"(i.e., collection areas). The RC landscape was dominated by shallow south-facing aspects and BP was dominated by steep north-facing aspects. Within each landscape, point mean fire intervals (PMFIs) were not significantly different between aspect classes. However, pooled PMFIs were significantly shorter in RC compared to BP. These results show that the fire history at any given point (i.e., 2 hectares or less) was primarily controlled by the broad-scale topography of the encompassing landscape, rather than by the fine-scale topography at that point. Using similar methods we also reconstructed the fire history on Rincon Peak, which is a small isolated mountain range with very step topography. The fire history of the 310-hectare forest area was a mixture of frequent low severity surface fires (from AD 1648 to 1763) and infrequent mixed-severity fires (from AD 1763 to 1867). This mixed-fire regime was probably due to a combination of climatic variability, the small area and rugged topography of this mountain range, and complex fuel arrangements. The distinct fire histories from these two study areas provided natural age structure experiments that indicated tree age cohorts (i.e., higher than expected tree establishment pulses) occurred during periods of reduced fire frequencies. In some instances these periods were likely caused by climatic variability (e.g., a wet and/or cool early 1800s) creating synchronous age cohorts across the region. At other times, extended fire intervals were a function of local topography (e.g., 1763-1819 in the northern half of Rincon Peak). Overall, these studies demonstrated that landscape and climatic variations combine to produce complex spatial and temporal variations in fire history and tree age structures.
Download or read book Research Development written by and published by . This book was released on 2007 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biodiversity and Management of the Madrean Archipelago written by and published by . This book was released on 1995 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biodiversity and the Management of the Madrean Archipelago written by Leonard F. DeBano and published by DIANE Publishing. This book was released on 1999-10 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference brought together scientists and managers from government, universities, and private organizations to examine the biological diversity and management challenges of the unique "sky island" ecosystems of the mountains of the southwestern U.S. and northwestern Mexico. Session topics included: floristic resources, plant ecology, vertebrates, invertebrates, hydrology and riparian systems, aquatic resources, fire, conservation and management, human uses through time, and visions for the future. Illustrated.
Download or read book Conference on Adaptive Ecosystem Restoration and Management Restoration of Cordilleran Conifer Landscapes of North America written by and published by . This book was released on 1996 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report RM written by and published by . This book was released on 1996 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference on Adaptive Ecosystem Restoration and Management written by Wallace Covington and published by DIANE Publishing. This book was released on 1998-02 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference was meant to facilitate the development of mutually beneficial human-wildland interactions by exploring ways in which to restore and sustain land health, as well as that of dependent human communities, in an adaptive ecosystem management context. General adaptive ecosystem restoration and management principles were discussed, however the conference was specifically designed to encourage cooperative North American work. The primary focus was on long-needled pine (principally ponderosa and closely related pines) and mixed-conifer landscape systems in the Western U.S.
Download or read book A Compendium of Forest Growth and Yield Simulators for the Pacific Coast States written by Martin W. Ritchie and published by . This book was released on 1999 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2015-10 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Southwest written by Stephen J. Pyne and published by University of Arizona Press. This book was released on 2016-09-13 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: With its scattered mountains and high rims, its dry air and summer lightning, its rising tier of biomes from desert grasses to alpine conifers, and its aggressive exurban sprawl, something in the Southwest is ready to burn each year and some high-value assets seem ever in their path. But the past 20 years have witnessed an uptake in savagery, as routine surface burns have mutated into megafires and overrun nearly a quarter of the region’s forests. What happened, and what does it mean for the rest of the country? Through a mixture of journalism, history, and literary imagination, fire expert Stephen J. Pyne provides a lively survey of what makes this region distinctive, moving us beyond the usual conversations of science and policy. Pyne explores the Southwest’s sacred mountains, including the Jemez, Mogollon, Huachucas, and Kaibab; its sky islands, among them the Chiricahuas, Mount Graham, and Tanque Verde; and its famous rims and borders. Together, the essays provide a cross-section of how landscape fire looks in the early years of the 21st century, what is being done to manage it, and how fire connects with other themes of southwestern life and culture. The Southwest is part of the multivolume series describing the nation’s fire scene region by region. The volumes in To the Last Smoke also cover California, the Northern Rockies, the Great Plains, Florida, and several other critical fire regions. The series serves as an important punctuation point to Pyne’s 50-year career with wildland fire—both as a firefighter and a fire scholar. These unique surveys of regional pyrogeography are Pyne’s way of “keeping with it to the end,” encompassing the directive from his rookie season to stay with every fire “to the last smoke.”
Download or read book Changing Plant Life of La Frontera written by Grady Linder Webster and published by UNM Press. This book was released on 2001 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a new agenda for study of the strikingly diverse shrub and grassland ecosystems of the U.S./Mexico border.
Download or read book Ecology and Biogeography of Pinus written by David M. Richardson and published by Cambridge University Press. This book was released on 2000-07-31 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review essential for all involved in the management of natural and planted pine forests.
Download or read book Fire and Climatic Change in Temperate Ecosystems of the Western Americas written by Thomas T. Veblen and published by Springer Science & Business Media. This book was released on 2006-05-10 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both fire and climatic variability have monumental impacts on the dynamics of temperate ecosystems. These impacts can sometimes be extreme or devastating as seen in recent El Nino/La Nina cycles and in uncontrolled fire occurrences. This volume brings together research conducted in western North and South America, areas of a great deal of collaborative work on the influence of people and climate change on fire regimes. In order to give perspective to patterns of change over time, it emphasizes the integration of paleoecological studies with studies of modern ecosystems. Data from a range of spatial scales, from individual plants to communities and ecosystems to landscape and regional levels, are included. Contributions come from fire ecology, paleoecology, biogeography, paleoclimatology, landscape and ecosystem ecology, ecological modeling, forest management, plant community ecology and plant morphology. The book gives a synthetic overview of methods, data and simulation models for evaluating fire regime processes in forests, shrublands and woodlands and assembles case studies of fire, climate and land use histories. The unique approach of this book gives researchers the benefits of a north-south comparison as well as the integration of paleoecological histories, current ecosystem dynamics and modeling of future changes.
Download or read book Wildland Fire in Ecosystems written by and published by . This book was released on 1998 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Fire on Madrean Province Ecosystems written by and published by . This book was released on 1996 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
