Vegetation and Floristics of Pingos, Central Arctic Coastal Plain, Alaska PDF Download
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Author: Marilyn Walker
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 310
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Book Description
Examines regional pingo flora and vegetation of central Arctic Coastal Plain, Alaska, with regard to environmental gradients, equilibrium biogeography, and successional patterns.
Author: Marilyn Walker
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 310
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Book Description
Examines regional pingo flora and vegetation of central Arctic Coastal Plain, Alaska, with regard to environmental gradients, equilibrium biogeography, and successional patterns.
Author: Marilyn Walker
Publisher:
ISBN:
Category : Hydromorphic soils
Languages : en
Pages : 104
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Book Description
Author: F.Stuart III Chapin
Publisher: Springer Science & Business Media
ISBN: 3642789668
Category : Science
Languages : en
Pages : 337
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Book Description
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: National Research Council
Publisher: National Academies Press
ISBN: 0309087376
Category : Science
Languages : en
Pages : 305
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Book Description
This book identifies accumulated environmental, social and economic effects of oil and gas leasing, exploration, and production on Alaska's North Slope. Economic benefits to the region have been accompanied by effects of the roads, infrastructure and activies of oil and gas production on the terrain, plants, animals and peoples of the North Slope. While attempts by the oil industry and regulatory agencies have reduced many of the environmental effects, they have not been eliminated. The book makes recommendations for further environmental research related to environmental effects.
Author: William D. Bowman
Publisher: Oxford University Press
ISBN: 9780195117288
Category : Nature
Languages : en
Pages : 360
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Book Description
Alpine Tundra.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 808
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Book Description
Author: H. G. Jones
Publisher: Cambridge University Press
ISBN: 9780521584838
Category : Nature
Languages : en
Pages : 272
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Book Description
A multidisciplinary 2001 overview of life in, on and under snow for anyone interested in the cryosphere.
Author: James F. Reynolds
Publisher: Springer Science & Business Media
ISBN: 366201145X
Category : Science
Languages : en
Pages : 447
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Book Description
Following the discovery of large petroleum reserves in northern Alaska, the US Department of Energy implemented an integrated field and modeling study to help define potential impacts of energy-related disturbances on tundra ecosystems. This volume presents the major findings from this study, ranging from ecosystem physiology and biogeochemistry to landscape models that quantify the impact of road-building. An important resource for researchers and students interested in arctic ecology, as well as for environmental managers concerned with practical issues of disturbances.
Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 404
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Book Description
Author:
Publisher:
ISBN:
Category : Mountain animals
Languages : en
Pages : 574
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Book Description
