Share

Natural and Anthropogenic Influences on the Holocene Fire and Vegetation History of the Willamette Valley, Northwest Oregon and Southwest Washington

Download Natural and Anthropogenic Influences on the Holocene Fire and Vegetation History of the Willamette Valley, Northwest Oregon and Southwest Washington PDF Online Free

Author :
Release : 2008
Genre : Forest fires
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Natural and Anthropogenic Influences on the Holocene Fire and Vegetation History of the Willamette Valley, Northwest Oregon and Southwest Washington by : Megan Kathleen Walsh

Download or read book Natural and Anthropogenic Influences on the Holocene Fire and Vegetation History of the Willamette Valley, Northwest Oregon and Southwest Washington written by Megan Kathleen Walsh. This book was released on 2008. Available in PDF, EPUB and Kindle. Book excerpt:

Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems

Download Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems PDF Online Free

Author :
Release : 2021-10-01
Genre : Science
Kind : eBook
Book Rating : 673/5 ( reviews)

GET EBOOK


Book Synopsis Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems by : Cathryn H. Greenberg

Download or read book Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems written by Cathryn H. Greenberg. This book was released on 2021-10-01. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume presents original scientific research and knowledge synthesis covering the past, present, and potential future fire ecology of major US forest types, with implications for forest management in a changing climate. The editors and authors highlight broad patterns among ecoregions and forest types, as well as detailed information for individual ecoregions, for fire frequencies and severities, fire effects on tree mortality and regeneration, and levels of fire-dependency by plant and animal communities. The foreword addresses emerging ecological and fire management challenges for forests, in relation to sustainable development goals as highlighted in recent government reports. An introductory chapter highlights patterns of variation in frequencies, severities, scales, and spatial patterns of fire across ecoregions and among forested ecosystems across the US in relation to climate, fuels, topography and soils, ignition sources (lightning or anthropogenic), and vegetation. Separate chapters by respected experts delve into the fire ecology of major forest types within US ecoregions, with a focus on the level of plant and animal fire-dependency, and the role of fire in maintaining forest composition and structure. The regional chapters also include discussion of historic natural (lightning-ignited) and anthropogenic (Native American; settlers) fire regimes, current fire regimes as influenced by recent decades of fire suppression and land use history, and fire management in relation to ecosystem integrity and restoration, wildfire threat, and climate change. The summary chapter combines the major points of each chapter, in a synthesis of US-wide fire ecology and forest management into the future. This book provides current, organized, readily accessible information for the conservation community, land managers, scientists, students and educators, and others interested in how fire behavior and effects on structure and composition differ among ecoregions and forest types, and what that means for forest management today and in the future.

Holocene Fire and Vegetation History of the Oregon Coast Range, USA

Download Holocene Fire and Vegetation History of the Oregon Coast Range, USA PDF Online Free

Author :
Release : 2003
Genre : Lake sediments
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Holocene Fire and Vegetation History of the Oregon Coast Range, USA by : Colin James Long

Download or read book Holocene Fire and Vegetation History of the Oregon Coast Range, USA written by Colin James Long. This book was released on 2003. Available in PDF, EPUB and Kindle. Book excerpt:

Northwest Science

Download Northwest Science PDF Online Free

Author :
Release : 2008
Genre : Science
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Northwest Science by :

Download or read book Northwest Science written by . This book was released on 2008. Available in PDF, EPUB and Kindle. Book excerpt:

Ecosystem Response to Holocene Fire and Climate Change at Hobart Lake, Southwestern Oregon

Download Ecosystem Response to Holocene Fire and Climate Change at Hobart Lake, Southwestern Oregon PDF Online Free

Author :
Release : 2014
Genre : Fires
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Ecosystem Response to Holocene Fire and Climate Change at Hobart Lake, Southwestern Oregon by : Alicia Lauren White

Download or read book Ecosystem Response to Holocene Fire and Climate Change at Hobart Lake, Southwestern Oregon written by Alicia Lauren White. This book was released on 2014. Available in PDF, EPUB and Kindle. Book excerpt: Oregon's southern Cascade Range contains one of the world's most biologically diverse forests. Past ecosystem responses to fire and climate change have been well studied in the Coast Range, the eastern Cascade Range, and the Klamath Mountains but the ecological and environmental histories of the southern Cascade Range are poorly understood. Therefore, an 8000-year-long record from Hobart Lake (42.09935°N, 122.48170°W, 1458m), Oregon in the southern Cascade Range was examined to better understand past changes in vegetation and fire activity, conifer biogeographic distributions, and regional climate variability. Hobart Lake is exceptional in that it has an unusually fast sedimentation rate, resulting in a detailed vegetation and fire records based on pollen and macroscopic charcoal data. From 8000 to 3500 cal yr BP, the dominance of xerophytic species, such as Pinus and Cupressaceae, and the high frequency of fires are consistent with a climate that was warm and dry. Late-Holocene vegetation from 3500 cal yr BP to the present day was characterized by an abundance of mesophytic taxa, such as Abies and Pseudotsuga, and the decline of xerophytic taxa such as Pinus. These changes, along with reduced fire frequency, suggest that the climate became cooler and wetter. In addition to the Hobart Lake record, changes in the abundance of Abies and Pseudotsuga pollen at multiple sites throughout Oregon and northern California were examined. Abies was abundant during the late glacial, its range and/or abundance contracted during the early Holocene, and it gradually became more widespread and abundant during the mid- and late-Holocene. Pseudotsuga became more abundant at northern low-elevation sites during the warm dry conditions of the early Holocene and then flourished in more southern mid-elevation sites when the climate became cooler and wetter in the late Holocene. The vegetation history at Hobart Lake and other sites is consistent with large-scale variations in regional climate related to slowly varying changes in the seasonal insolation cycle and the indirect effects of insolation on the size and strength of the northeastern Pacific subtropical high-pressure system.

You may also like...