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Author : Horace Sanders
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.F/5 ( download)
Download or read book Ecosystems (based on Vegetative Types): Arctic planning region written by Horace Sanders and published by . This book was released on 1973 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Francis Stuart Chapin (III)
Publisher :
ISBN 13 :
Total Pages : 498 pages
Book Rating : 4.:/5 (318 download)
Download or read book Arctic Ecosystems in a Changing Climate written by Francis Stuart Chapin (III) and published by . This book was released on 1992 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the physiological ecology of arctic plants, suggests a new role for physiological ecology in studying biotic controls over community and ecosystem processes, and provides a physiological basis for predicting how arctic plant communities will respond to global climate change.
Author : Horace Sanders
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (794 download)
Download or read book Ecosystems (based on Vegetative Types), Arctic Planning Region written by Horace Sanders and published by . This book was released on 1973 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Horace Sanders
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.F/5 ( download)
Download or read book Ecosystems (based on Vegetative Types): Southwest planning region written by Horace Sanders and published by . This book was released on 1973 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Horace Sanders
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.F/5 ( download)
Download or read book Ecosystems (based on Vegetative Types): Southeast planning region written by Horace Sanders and published by . This book was released on 1973 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Horace Sanders
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.F/5 ( download)
Download or read book Ecosystems (based on Vegetative Types): Northwest planning region written by Horace Sanders and published by . This book was released on 1973 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Horace Sanders
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (76 download)
Download or read book Resources Inventory, Arctic Planning Region written by Horace Sanders and published by . This book was released on 1973 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary assessment of ecosystems in the Alaskan North Slope area.
Author : F.Stuart III Chapin
Publisher : Springer Science & Business Media
ISBN 13 : 3642789668
Total Pages : 337 pages
Book Rating : 4.6/5 (427 download)
Download or read book Arctic and Alpine Biodiversity: Patterns, Causes and Ecosystem Consequences written by F.Stuart III Chapin and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: As human populations expand and have increasing access to technol ogy, two general environmental concerns have arisen. First, human pop ulations are having increasing impact on the earth system, such that we are altering the biospheric carbon pools, basic processes of elemental cycling and the climate system of the earth. Because of time lags and feedbacks, these processes are not easily reversed. These alterations are occurring now more rapidly than at any time in the last several million years. Secondly, human activities are causing changes in the earth's biota that lead to species extinctions at a rate and magnitude rivaling those of past geologic extinction events. Although environmental change is potentially reversible at some time scales, the loss of species is irrevo cable. Changes in diversity at other scales are also cause for concern. Habitat fragmentation and declines in population sizes alter genetic di versity. Loss or introduction of new functional groups, such as nitro gen fixers or rodents onto islands can strongly alter ecosystem processes. Changes in landscape diversity through habitat modification and frag mentation alter the nature of processes within and among vegetation patches. Although both ecological changes altering the earth system and the loss of biotic diversity have been major sources of concern in recent years, these concerns have been largely independent, with little concern for the environmental causes the ecosystem consequences of changes in biodiversity. These two processes are clearly interrelated. Changes in ecological systems cause changes in diversity.
Author :
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (54 download)
Download or read book Modeling the Response of Arctic Vegetation to Disturbance written by and published by . This book was released on 1994 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R.M. Crawford
Publisher : Springer
ISBN 13 : 0792344189
Total Pages : 621 pages
Book Rating : 4.7/5 (923 download)
Download or read book Disturbance and Recovery in Arctic Lands written by R.M. Crawford and published by Springer. This book was released on 1997-03-31 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: The disturbance and recovery of arctic terrestrial ecosystems was the subject of a NATO Advanced Workshop held at the Arctic Centr, University of Lapland, Rovaniemi, Finland, in September 1995. The object of the meeting was to bring together researchers on arctic vegetation who share a concern for the preservation of arctic ecosystems. A particular aim of the meeting was to involve as many Russian colleagues as possible and to encourage younger scientists currently active in the Russian Arctic to come to Rovaniemi and make first-hand contact with colleagues from other countries with a view to planning further collaboration. This volume of papers therefore contains papers both from many younger researchers as well as from those who have been active in arctic plant ecology for many years. Disturbance is no new feature in the arctic environment. The factors that create the arctic habitat include marked climatic oscillations, physical disturbance and fluctuations in herbivore populations. The combination of environmental stress and disturbance from habitat instability and the possibility of periods of intense grazing imposes a particularly testing blend of adverse conditions for plant survival. The physical nature of the terrain with constant soil movement through cryoperturbation and solifluction contributes to the fragility of arctic habitats. To this scenario we must add disturbance by man in the unending quest for yet more natural resources, whether they be animal, vegetable or mineral or merely the concept of environmental experience, as in tourism.
Author : Herbert C. Hanson
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (216 download)
Download or read book Vegetation Types in Northwestern Alaska and Comparisons with Communities in Other Arctic Regions written by Herbert C. Hanson and published by . This book was released on 1953 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F.Stuart III Chapin
Publisher : Springer
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.3/5 (91 download)
Download or read book Arctic and Alpine Biodiversity: Patterns, Causes and Ecosystem Consequences written by F.Stuart III Chapin and published by Springer. This book was released on 1995-04-18 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: As human populations expand and have increasing access to technol ogy, two general environmental concerns have arisen. First, human pop ulations are having increasing impact on the earth system, such that we are altering the biospheric carbon pools, basic processes of elemental cycling and the climate system of the earth. Because of time lags and feedbacks, these processes are not easily reversed. These alterations are occurring now more rapidly than at any time in the last several million years. Secondly, human activities are causing changes in the earth's biota that lead to species extinctions at a rate and magnitude rivaling those of past geologic extinction events. Although environmental change is potentially reversible at some time scales, the loss of species is irrevo cable. Changes in diversity at other scales are also cause for concern. Habitat fragmentation and declines in population sizes alter genetic di versity. Loss or introduction of new functional groups, such as nitro gen fixers or rodents onto islands can strongly alter ecosystem processes. Changes in landscape diversity through habitat modification and frag mentation alter the nature of processes within and among vegetation patches. Although both ecological changes altering the earth system and the loss of biotic diversity have been major sources of concern in recent years, these concerns have been largely independent, with little concern for the environmental causes the ecosystem consequences of changes in biodiversity. These two processes are clearly interrelated. Changes in ecological systems cause changes in diversity.
Author : Robert G. Bailey
Publisher : Springer Science & Business Media
ISBN 13 : 1493905244
Total Pages : 184 pages
Book Rating : 4.4/5 (939 download)
Download or read book Ecoregions written by Robert G. Bailey and published by Springer Science & Business Media. This book was released on 2014-04-03 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global warming and human-driven impacts are changing the World’s ecological zones. This book applies the principles described in Bailey’s Ecosystem Geography: From Ecoregions to Sites, 2nd ed. (Springer 2009, 1st ed. 1996) to describe and characterize the major terrestrial and aquatic ecological zones of the Earth. Bailey’s system for classifying these zones has been adopted by major organizations such as the U.S. Forest Service and The Nature Conservancy and this book is a significant contribution to a long tradition of classifying and studying the world’s ecological regions or ecoregions. It includes two color maps that show the major ecoregions of the continents and oceans. Also included are: - 106 illustrations with 55 in full color - A new chapter on mountains is included. - There are new sections that address concerns about how eco regions are changing under the relentless influence of humans and climate change - Another new feature is the discussion of using eco regional patterns to transfer research results and select sites for detecting climate change effects on ecosystem distribution - Use of ecoregional patterns to design monitoring networks and sustainable landscapes - Fire regimes in different regional ecosystems and their management implications.
Author : Martha Kean Raynolds
Publisher :
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.:/5 (438 download)
Download or read book A Geobotanical Analysis of Circumpolar Arctic Vegetation, Climate, and Substrate written by Martha Kean Raynolds and published by . This book was released on 2009 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objective of the research presented in this dissertation was to better understand the factors controlling the present and potential future distribution of arctic vegetation. The analysis compares the Circumpolar Arctic Vegetation Map (CAVM) with circumpolar data sets of environmental characteristics. Geographical information system (GIS) software was used to overlay the CAVM with a satellite index of vegetation (normalized difference vegetation index, NDVI) and environmental factors that are most important in controlling the distribution of arctic vegetation, including summer temperature, landscape age, precipitation, snow cover, substrate chemistry (pH and salinity), landscape type, elevation, permafrost characteristics, and distance to sea. Boosted regression tree analysis was used to determine the relative importance of different environmental characteristics for different vegetation types and for different regions. Results of this research include maps, charts and tables that summarize and display the spatial characteristics of arctic vegetation. The data for arctic land surface temperature and landscape age are especially important new resources for researchers. These results are available electronically, not only as summary data, but also as GIS data layers with a spatial context (www.arcticatlas.org). The results emphasize the value and reliability of NDVI for studying arctic vegetation. The relationship between NDVI and summer temperatures across the circumpolar arctic was similar to the correlated increases in NDVI and temperature seen over the time period of satellite records. Summaries of arctic biomass based on NDVI match those based on extrapolation from ground samples. The boosted regression tree analysis described ecological niches of arctic vegetation types, demonstrating the importance of summer temperatures and landscape age in controlling the distribution of arctic vegetation. As the world continues to focus on the Arctic as an area undergoing accelerated warming due to global climate change, results presented here from spatially explicit analysis of existing arctic vegetation and environmental characteristics can be used to better understand plant distribution patterns, evaluate change in the vegetation, and calibrate models of arctic vegetation and animal habitat."--Leaf iii.
Author : Program for the Conservation of Arctic Flora and Fauna
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (318 download)
Download or read book Strategic Plan for the Conservation of Arctic Biological Diversity written by Program for the Conservation of Arctic Flora and Fauna and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Heinrich Walter
Publisher : Springer
ISBN 13 :
Total Pages : 610 pages
Book Rating : 4.3/5 (91 download)
Download or read book Temperate and Polar Zonobiomes of Northern Eurasia written by Heinrich Walter and published by Springer. This book was released on 1989 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F.Stuart Chapin
Publisher : Springer Science & Business Media
ISBN 13 : 1461301572
Total Pages : 393 pages
Book Rating : 4.4/5 (613 download)
Download or read book Global Biodiversity in a Changing Environment written by F.Stuart Chapin and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific community has voiced two general concerns about the future of the earth. Firstly, climatologists and oceanographers have focused on the changes in our physical environment, ie climate, oceans, and air. And secondly, environmental biologists have addressed issues of conservation and the extinction of species. There is increasing evidence that these two broad concerns are intertwined and mutually dependent. Past changes in biodiversity have both responded to and caused changes in the earths environment. In its discussions of ten key terrestrial biomes and freshwater ecosystems, this volume uses our broad understanding of global environmental change to present the first comprehensive scenarios of biodiversity for the twenty-first century. Combining physical earth science with conservation biology, the book provides a starting-point for regional assessments on all scales. The book will be of interest to those concerned with guiding research on the changing environment of the earth and with planning future policy, especially in accordance with the Global Biodiversity Convention.
