Ecophysiological and Demographic Studies of White Spruce (Picea Glauca (Moench)Voss) PDF Download

Author: Guillermo Hernan Goldstein
Publisher:
ISBN:
Category : White spruce
Languages : en
Pages : 386

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Author: Guillermo Hernan Goldstein
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 386

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Author: William K. Smith
Publisher: Academic Press
ISBN: 0080925936
Category : Technology & Engineering
Languages : en
Pages : 352

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Conifers--pine, fir, and spruce trees--are dominant species in forests around the world. This book focuses on the physiology of conifers and how these physiological systems operate. Special consideration is devoted to the means by which ecophysiological processes influence organismal function and distribution. Chapters focus on the genetics of conifers, their geographic distribution and the factors that influence this distribution, the impact of insect herbivory on ecophysiological parameters, the effects of air pollution, and the potential impact that global climatic changes will have upon conifers. Because of the growing realization that forests have a crucial role to play in global environmental health, this book will appeal to a developing union of ecologists, physiologists and more theoretically minded foresters.

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 558

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Category : Ecology
Languages : en
Pages : 708

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Category : National parks and reserves
Languages : en
Pages : 24

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Author: Edward Carter Tear
Publisher:
ISBN:
Category : White spruce
Languages : en
Pages : 0

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The importance of light and seedbed type were evident for germination success and seedling survival of white spruce [ Picea glauca (Moench) Voss] in the field. Under forest canopy cover, seedbeds of exposed mineral soil had higher rates of germination than seedbeds with competing vegetation removed or on seedbeds with competing vegetation intact. The shade offered by the forest canopy and the seedbed of mineral soil probably maintain adequate soil moisture conditions to allow good germination. Microsites which had mineral soil exposed and which were only partially shaded enhanced white spruce seedling survival. These microsites probably did not experience severe fluctuations in soil moisture content which may be a major cause of seedling mortality in white spruce. Time of year, light and watering do not act independently on retention, distribution or partitioning of recently photoassimilated 14 C02. Seasonal patterns of each are influenced by either light or watering or both. Spruce seedlings grown under water stress or "full-light" conditions retain less 14 C than those seedlings grown under no water stress or grown under low light. The effects of light or watering regime are more pronounced on first-year seedlings than on second-year seedlings. Generally, second-year seedlings translocate a greater percentage of recently assimilated 14 C to the roots than do first-year seedlings. The percent of 14 C translocated to the roots varies with time of year and is affected by the interactive effects of light and watering. Between June and September an increasing proportion of assimilated carbon-14 is channelled into storage rather than into structural components. Deviations from this pattern can occur as a result of changes in light and watering. Xylem pressure potential can be used to estimate white spruce seedling survival. The relationship between xylem pressure potential and survival varied with soil type, probably due to differences in hygroscopic properties. The younger the seedling the more sensitive it is to drying soils.

Author: Philip W. Rundel
Publisher: Cambridge University Press
ISBN: 052142089X
Category : Gardening
Languages : en
Pages : 400

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Plants growing in tropical alpine environments (at altitudes above the closed canopy forest and below the limit of plant life) have evolved distinct forms to cope with a hostile environment characterized by cold, drought and fire. Unlike temperate alpine environments, where there are distinct seasons of favourable and unfavourable conditions for growth, tropical alpine habitats present summer conditions every day and winter conditions every night. Using examples from all over the tropics, this fascinating account reviews, for the first time, the unique form and functional relationships of tropical alpine plants examining both their physiological ecology and population biology. It will appeal to anyone interested in tropical vegetation and plant physiological adaptations to hostile environment, as well as to researchers in biogeography and ecology.

Author: Thomas J. Givnish
Publisher: Cambridge University Press
ISBN: 9780521262965
Category : Science
Languages : en
Pages : 1072

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This book summarizes the major recent advances in the economic analysis of plant behavior.

Author: Harold Samuel James Zald
Publisher:
ISBN:
Category : White spruce
Languages : en
Pages : 92

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