Download or read book Vegetation Recovery in Arctic Tundra and Forest tundra After Fire north of 60 written by Canada. Northern Economic Development Branch and published by . This book was released on 1975 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vegetation Recovery in Arctic Tundra and Forest tundra After Fire written by Ross Wallace Wein and published by Indian and Northern Affairs. This book was released on 1975 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological consequences of fire studied north-east of Inuvik, N.W.T.

Download or read book Vegetation Recovery in Arctic Tundra and Forest tundra After Fire Fuel Characteristics of Plant Communities in the Mackenzie Delta Region Nutrient Budget Changes Following Fire in Arctic Plant Communities written by Canada. Department of Indian Affairs and Northern Development. Northern Natural Resources and Environment Branch and published by . This book was released on 1975 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vegetation Recovery in Arctic Tundra and Forest tundra After Fire written by Ross Wallace Wein and published by . This book was released on 1975 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Post fire Vegetation Succession in the Siberian Subarctic Tundra Over 45 Years written by Ramona Julia Heim and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recovery of Vegetation in Arctic Regions After Burning written by Ross Wallace Wein and published by . This book was released on 1974 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impact of Fire on Forest and Tundra Ecosystems North of 60 written by Canada. Dept. of Indian Affairs and Northern Development. Northern Economic Development Branch. Arctic Land Use Research Program and published by . This book was released on 1975 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sensitivity of Past Present and Future Fire Regimes to Climate and Vegetation Variability in Boreal Forest and Tundra Ecosystems written by Adam M. Young and published by . This book was released on 2018 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wildfire activity in North American boreal forest and tundra ecosystems is strongly controlled by climate, indicating the potential for widespread fire-regime shifts in response to ongoing and future climate change. This dissertation focuses on understanding how fire regimes in boreal forest and tundra ecosystems respond to variability in past, present, and future climate. Chapter 1 addresses how climate, vegetation, and topography control the spatial distribution of fire occurrence in Alaskan boreal forest and tundra ecosystems. Through statistical modeling, I found that climate was the primary control of historical fire activity. Informing these statistical models with 21st-century climate projections suggests tundra and forest-tundra ecosystems will be particularly vulnerable to fire-regime shifts, due to increasing summer temperatures. In some areas, fire may become four times more likely to occur by 2100, relative to the past 6,000-35,000 years. In Chapter 2, I studied the importance of vegetation as a control of fire activity across North American boreal forests, using continental-scale fire and vegetation datasets spanning the past several decades. After climate, fire activity was most strongly linked to landscape tree cover (%). The likelihood of burning was also not independent of past fire, suggesting negative fire-vegetation feedbacks exist across North American boreal forests. These feedbacks are estimated to have reduced total area burned by ≈ 2.7-3.6 x106 ha (4-5%) from 1981-2016, relative to expectations if there were no feedbacks. While these negative fire-vegetation feedbacks may offset climatically driven increases in fire activity for several decades, continued warming and increasing aridity will likely overwhelm the mediating effects of vegetation by the mid- to late-21st century. In Chapter 3, I evaluate the ability of the statistical models from Chapter 1 to project fire regimes outside of the observational period (i.e., 1950-2009 CE). I informed these models with GCM data from 850-1850 CE, and compared these paleo-projections to independent fire histories derived from lake-sediment records. The accuracy of the paleo-projections varied regionally, with uncertainty highest in regions close to an observed temperature threshold to burning. These results highlight how threshold relationships can cause significant uncertainty in anticipating the timing, location, and magnitude of future ecosystem change.

Download or read book The Role of Fire in Northern Circumpolar Ecosystems written by International Council of Scientific Unions. Scientific Committee on Problems of the Environment and published by John Wiley & Sons. This book was released on 1983 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the conference "Fire in northern circumpolar ecosystems" held at the University of New Brunswick in 1979. Examines the role of fire in the functioning of northern ecosystems.

Download or read book The Ecology of Natural Disturbance and Patch Dynamics written by Steward T.A. Pickett and published by Elsevier. This book was released on 2013-10-22 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecologists are aware of the importance of natural dynamics in ecosystems. Historically, the focus has been on the development in succession of equilibrium communities, which has generated an understanding of the composition and functioning of ecosystems. Recently, many have focused on the processes of disturbances and the evolutionary significance of such events. This shifted emphasis has inspired studies in diverse systems. The phrase "patch dynamics" (Thompson, 1978) describes their common focus. The Ecology of Natural Disturbance and Patch Dynamics brings together the findings and ideas of those studying varied systems, presenting a synthesis of diverse individual contributions.

Download or read book Impact of Fire on Forest and Tundra Ecosystems north of 60 written by Canada. Northern Economic Development Branch and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Research Information Paper written by and published by . This book was released on 2001 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Climate Change and Fire on Tundra Vegetation Change in the Western Canadian Arctic written by Angel Chen and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid climate change is driving increases in tundra vegetation productivity and altering the frequency and severity of natural disturbances across the Arctic. While tundra vegetation change has been widespread, there is still uncertainty about the influence of fine-scale factors on change and the role of interactions between warming, disturbance, and vegetation change. In my MSc research I investigated how Arctic tundra vegetation is responding to ongoing climate change and more severe tundra fire in the western Canadian Arctic. In the first part of my thesis I measured post-fire soil and vegetation recovery along a burn severity gradient at six fires, which burned in 2012 in the Northwest Territories. My observations suggest that deciduous shrub communities (dominated by Betula glandulosa) are resilient to high severity fire and that severe fire promotes edaphic conditions that favor the persistence of this vegetation type. In the second part of my thesis, I investigated the spatial patterns of trends in tundra vegetation productivity over the past three decades using Random Forests machine learning to analyze Enhanced Vegetation Index (EVI) data derived from Landsat imagery. My Random Forests models of the relationship between Landsat EVI trends and biophysical variables showed that two-thirds of the western Canadian Arctic productivity has increased during the past three decades and that this change is occurring most rapidly in dwarf and upright shrub-dominated regions. Taken together, my research demonstrates that shrub tundra communities are well adapted to severe fire and show increasing productivity in response to warming Arctic temperature. My research also indicates that these relationships can be highly complex at finer scales, where they are mediated by local variations in microclimate, topography, and moisture.

Download or read book Recovery of Vegetation in Arctic Regions After Burning with Supplementary Report Nutrient Budget Changes Following Fire in Arctic Plant Communities written by Task Force on Northern Oil Development (Canada) and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Study to evaluate biological consequences of fire, and recovery rate of burned areas. Study on area north and east of Inuvik burned in August, 1968.

Download or read book Occasional Publication written by and published by . This book was released on 1964 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wildland Fire in Ecosystems written by and published by . This book was released on 2000 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wetland Habitats of North America written by Darold P. Batzer and published by Univ of California Press. This book was released on 2012-05-22 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Wetland Habitats of North America is essential reading for everyone who studies, manages, or visits North American wetlands. It fills an important void in the wetland literature, providing accessible and succinct descriptions of all of the continent’s major wetland types.” Arnold van der Valk, Iowa State University “Batzer and Baldwin have compiled the most comprehensive compendium of North American wetland habitats and their ecology that is presently available—a must for wetland scientists and managers.” Irving A. Mendelssohn, Louisiana State University "If you want to gain a broad understanding of the ecology of North America’s diverse wetlands, Wetland Habitats of North America is the book for you. Darold Batzer and Andrew Baldwin have assembled an impressive group of regional wetland scientists who have produced a virtual encyclopedia to the continent’s wetlands. Reading the book is like a road trip across the Americas with guided tours of major wetland types by local experts. Your first stop will be to coastal wetlands with eight chapters covering tidal wetlands along the Atlantic, Gulf, and Pacific coasts. Then you’ll travel inland where you can visit any or all of 18 types ranging from bottomland swamps of the Southeast to pothole marshes of the Northern Prairies to montane wetlands of the Rockies to tropical swamps of Central America and desert springs wetlands. All in one book—I’m impressed! Every wetlander should add this book to her or his swampland library. Ralph Tiner, University of Massachusetts–Amherst