Germination Requirements of 19 Species of Arid Land Plants PDF Download

Author: David G. Sabo
Publisher:
ISBN:
Category : Arid regions
Languages : en
Pages : 36

View

Book Description

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 316

View

Book Description

Author: Robert C. Szaro
Publisher:
ISBN:
Category : Arid regions plants
Languages : en
Pages : 910

View

Book Description
Avalanche dynamics equations are used to estimate flow heights, velocities, specific thrust pressure, maximum specific weight of avalanche debris, and runout distance for 12 avalanche case studies from the Colorado Rocky Mountains. Suggestions are made for using this engineering approach for avalanche zoning and land use planning.

Author: Yitzchak Gutterman
Publisher: Springer Science & Business Media
ISBN: 3642756980
Category : Science
Languages : en
Pages : 262

View

Book Description
During germination, the most resistant stage of the life cycle - the seed - changes to the most sensitive stage, namely the seedling. Therefore, in desert plant species seed dispersal and subsequent germination in the optimum time an place place are particularly critical parameters. Discussed here are the ways and means by which desert plants have adapted through the course of evolution to their extreme environment. Two such strategies which have evolved are a) plants with relatively large and protected seeds which germinate when the chance of seedling survival is high and the risk relatively low or b) those with an opportunistic strategy: minute seeds which germinate after low rainfall under high risk for seedling survival if additional rain does not follow. Most species adopt a combination of the two mechanisms. Species have adapted both genotypically and phenotypically, both aspects of which are also discussed in this thorough text. The reader is provided with a good understanding of the complex influences on each seed traced through from initial development to germination stage regarding germination preparation and subsequent survival.

Author: Clinton H. Wasser
Publisher:
ISBN:
Category : Plants for land reclamation
Languages : en
Pages : 362

View

Book Description
Located in the Oklahoma Collection.

Author: Ronald L. Mauk
Publisher:
ISBN:
Category :
Languages : en
Pages : 886

View

Book Description

Author: G. P. Cheplick
Publisher: Cambridge University Press
ISBN: 0521572053
Category : Nature
Languages : en
Pages : 409

View

Book Description
Dynamics.

Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 574

View

Book Description

Author: Mahamane Ali
Publisher: BoD – Books on Demand
ISBN: 9535105728
Category : Science
Languages : en
Pages : 500

View

Book Description
The ecosystems present a great diversity worldwide and use various functionalities according to ecologic regions. In this new context of variability and climatic changes, these ecosystems undergo notable modifications amplified by domestic uses of which it was subjected to. Indeed the ecosystems render diverse services to humanity from their composition and structure but the tolerable levels are unknown. The preservation of these ecosystemic services needs a clear understanding of their complexity. The role of research is not only to characterise the ecosystems but also to clearly define the tolerable usage levels. Their characterisation proves to be important not only for the local populations that use it but also for the conservation of biodiversity. Hence, the measurement, management and protection of ecosystems need innovative and diverse methods. For all these reasons, the aim of this book is to bring out a general view on the function of ecosystems, modelling, sampling strategies, invading species, the response of organisms to modifications, the carbon dynamics, the mathematical models and theories that can be applied in diverse conditions.

Author: United States. Forest Service
Publisher: Forest Service
ISBN:
Category : Gardening
Languages : en
Pages : 1240

View

Book Description