Ecoregions Of Alaska
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Ecoregions Of Alaska
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Author : Alisa L. Gallant
language : en
Publisher: DIANE Publishing
Release Date : 1998-05
Ecoregions Of Alaska written by Alisa L. Gallant and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-05 with categories.
Produced as a framework for organizing and interpreting environmental data for inventory, monitoring, and research efforts. The descriptions of the 20 ecoregions of Alaska contained in this guide were derived by synthesizing information on the geographic distribution of environmental factors such as climate, terrain, soils, and vegetation. The specific procedures and materials used to delineate the ecoregion boundaries are documented, and the environmental characteristics in each ecoregion are described. Accompanied by a full-color oversize map of the ecoregions, their boundaries, and transitional areas. 42 full-color photos.
Ecoregions Of Alaska
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Author :
language : en
Publisher:
Release Date : 1995
Ecoregions Of Alaska written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Ecoregions Of Alaska U S Geological Survey Professional Paper 1567
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Author :
language : en
Publisher:
Release Date :
Ecoregions Of Alaska U S Geological Survey Professional Paper 1567 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
U S Geological Survey Professional Paper
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Author :
language : en
Publisher:
Release Date : 1984
U S Geological Survey Professional Paper written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
U S Geological Survey Programs In Alaska
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Author :
language : en
Publisher:
Release Date : 1998
U S Geological Survey Programs In Alaska written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Geological surveys categories.
Description Of The Ecoregions Of The United States
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Author :
language : en
Publisher:
Release Date : 1995
Description Of The Ecoregions Of The United States written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Biotic communities categories.
Description Of The Ecoregions Of The United States
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Author : United States. Forest Service
language : en
Publisher:
Release Date : 1978
Description Of The Ecoregions Of The United States written by United States. Forest Service and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Biotic communities categories.
Atlas Of Relations Between Climatic Parameters And Distributions Of Important Trees And Shrubs In North America
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Author : Robert Stephen Thompson
language : en
Publisher:
Release Date : 2006
Atlas Of Relations Between Climatic Parameters And Distributions Of Important Trees And Shrubs In North America written by Robert Stephen Thompson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Alaska categories.
Terrestrial Ecoregions Of North America
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Author : Taylor H. Ricketts
language : en
Publisher: Washington, D.C. : Island Press
Release Date : 1999
Terrestrial Ecoregions Of North America written by Taylor H. Ricketts and has been published by Washington, D.C. : Island Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Nature categories.
Lauded in the New York Times science section as "a sweeping analysis of the ecosystems of the United States and Canada," this volume represents an unparalleled source of information and data for scientists and conservationists working in North America. Using a rigorous ecoregion-based approach, rather than the more common state-by-state analysis, a team of scientists from World Wildlife Fund has produced a stunning and comprehensive assessment of the current status of biodiversity in North America north of Mexico. Terrestrial Ecoregions of North America begins with six chapters that present the rationale for the ecoregion approach, describe the biological distinctiveness of North American ecoregions, assess the level of threats facing each, present a conservation agenda for the next decade, and set forth recommendations for preserving and restoring biodiversity. In addition, nineteen essays by leading scientists address specific topics such as the effect of cattle on riparian areas, and the problem of invasive exotic plant species. Following the main text are substantial appendixes that describe each ecoregion in detail, including information on: unique features of the ecoregion that set it apart from the others its biological distinctiveness, threats to habitats and wildlife, and important sites for conservation activities that enhance biodiversity conservation in the ecoregion conservation partners working in the ecoregion, including addresses and other contact information the relationship of the ecoregion to other classification schemes literature cited for that ecoregion One of the most useful and unique features of the book is the series of thirty full-color maps that present essential information about the ecoregions and the biodiversity they contain in a compelling and easily understood graphical format. The ecoregion-based approach has been adopted by many conservation groups as the most effective way to ward off massive losses of biodiversity, and this volume provides a road map to that important new strategy. With a significant number of previously unpublished data sets and new analytic approaches, Terrestrial Ecoregions of North America is both a guidebook for describing the biological wealth of the continent and a handbook for restoring and conserving it. It will be an essential reference for anyone concerned with biodiversity conservation in North America.
Snow Albedo Feedback In Northern Alaska
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Author : Lucas C Reckhaus
language : en
Publisher:
Release Date : 2020
Snow Albedo Feedback In Northern Alaska written by Lucas C Reckhaus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
This paper investigates how the snow-albedo feedback mechanism of the arctic is changing in response to rising climate temperatures. Specifically, the interplay of vegetation and snowmelt, and how these two variables can be correlated. This has the potential to refine climate modelling of the spring transition season. Research was conducted at the ecoregion scale in northern Alaska from 2000 to 2020. Each ecoregion is defined by distinct topographic and ecological conditions, allowing for meaningful contrast between the patterns of spring albedo transition across surface conditions and vegetation types. The five most northerly ecoregions of Alaska are chosen as they encompass three distinct geographic zones: the arctic permafrost, the Brooks Range which forms its southern boundary, and continental boreal forests and highlands beyond this. Findings indicate: 1) surface temperatures warming across all regions. 2) Albedo loss occurring earlier and faster. 3) vegetation growth occurring earlier and stronger. 4) A comparison of BSA and NDVI data shows an inverse relationship between the rate of snowmelt and the texture of a surface—influenced most heavily by vegetation cover. Overall, the snow albedo feedback mechanism of northern Alaska is in precipitous decline. This is reducing the process by which the terrestrial arctic contributes to the earth’s cooling.