Determination Key by Vegetative Characteristics of Lianas Collected in the Mabura Hill Compartment in Guyana

Determination Key by Vegetative Characteristics of Lianas Collected in the Mabura Hill Compartment in Guyana PDF Author: C.A. van der Kooij
Publisher:
ISBN:
Category :
Languages : en
Pages : 17

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Determination Key by Vegetative Characteristics of Lianas Collected in the Mabura Hill Compartment in Guyana

Determination Key by Vegetative Characteristics of Lianas Collected in the Mabura Hill Compartment in Guyana PDF Author: C.A. van der Kooij
Publisher:
ISBN:
Category :
Languages : en
Pages : 17

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Book Description


Inselbergs

Inselbergs PDF Author: S. Porembski
Publisher: Springer Science & Business Media
ISBN: 3642597734
Category : Science
Languages : en
Pages : 543

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Book Description
Inselbergs are isolated rock outcrops that stand out abruptly from surrounding plains. Despite the widespread occurrence of granite inselbergs throughout all climatic and vegetational zones, their remarkably rich plant life was largely neglected in the recent literature. This richly and partly in color illustrated volume provides a detailed survey of all major abiotic and biotic features characteristic for inselbergs. The extreme environmental conditions on inselbergs are described in depth as well as specific adaptive traits of rock outcrop plants including their morphological, anatomical and physiological responses. The diversity and structure of inselberg plant communities are examined on a global scale with detailed regional accounts for different tropical and temperate zones.

Studying Forest Canopies from Above

Studying Forest Canopies from Above PDF Author: Yves Basset
Publisher:
ISBN: 9789962614050
Category : Forest canopies
Languages : en
Pages : 196

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Book Description
Temperate, tropical, vegetation, conservation.

Ecology and Logging in a Tropical Rain Forest in Guyana

Ecology and Logging in a Tropical Rain Forest in Guyana PDF Author: H. ter Steege
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 128

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Book Description


Treetops at Risk

Treetops at Risk PDF Author: Margaret Lowman
Publisher: Springer Science & Business Media
ISBN: 1461471613
Category : Science
Languages : en
Pages : 437

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Book Description
Forest canopies not only support high terrestrial biodiversity but also represent a critical interface between the atmosphere and the earth. They provide goods and services to support diverse human communities and offer opportunities to explore sustainable use of these resources for many generations of local livelihoods. Forest canopies are important carbon sequestration units, and in this sense, serve as climate control for the planet. Canopies are important energy production centers for the planet, and serve as the basis for many food chains. The canopy can also act as a hook for education outreach and conservation, inspiring ecotourism through recreation and other sustainable uses such as treetop walks, zip lines, and birding. Despite these critical services provided by forest canopies, almost no dedicated research in the treetops was initiated until as recently as the late 1970s when single rope techniques were developed by mountaineering professionals and adapted for use in the canopy. Subsequently, an array of canopy access tools was designed in the 1980s and early 1990s that have opened up this “eighth continent” for global exploration and discovery. This volume uses the major findings of the 5th international canopy conference as a platform for organization, but it does not mimic the sessions and presentations of the conference itself. Instead, it builds on the important themes that emerged from the conference and solicits articles that represent future priorities and advancements for canopy science in the next decade. Despite the global efforts of hundreds of forest scientists over the past 3 decades, forests are degrading at an accelerated rate and biodiversity is increasingly threatened by human activities. Given these trends - despite the very best efforts of the world’s best scientists - other approaches must be taken. This volume summarizes the issue of “treetops at risk” and assembles a global authorship to examine past accomplishments and future initiatives critical in forest conservation.

Ecological Impacts of Climate Change

Ecological Impacts of Climate Change PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309127106
Category : Science
Languages : en
Pages : 70

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Book Description
The world's climate is changing, and it will continue to change throughout the 21st century and beyond. Rising temperatures, new precipitation patterns, and other changes are already affecting many aspects of human society and the natural world. In this book, the National Research Council provides a broad overview of the ecological impacts of climate change, and a series of examples of impacts of different kinds. The book was written as a basis for a forthcoming illustrated booklet, designed to provide the public with accurate scientific information on this important subject.

Soils of the Rainforest in Central Guyana

Soils of the Rainforest in Central Guyana PDF Author: A. J. Van Kekem
Publisher:
ISBN: 9789039311592
Category : Rain forests
Languages : en
Pages : 160

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Book Description
"This book presents results of a soil inventory carried out in the Mabura-Kurupukari area in Central Guyana. Included are a soil map with description of mapping units, and profile descriptions with soil analytical data." -- T.p. verso.

Variowin

Variowin PDF Author: Yvan Pannatier
Publisher: Springer Science & Business Media
ISBN: 146122392X
Category : Mathematics
Languages : en
Pages : 100

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Book Description
1.1 Overview V ARIOWIN 2.2 is a collection of four WindowsTM programs - Prevar2D, Vari02D with PCF, Model, and Grid Display - that are used for spatial data analysis and variogram modeling of irregularly spaced data in two dimensions. Prevar2D builds a pair comparison file (PCF), that is, a binary file containing pairs of data sorted in terms of increasing distance. Pair comparison files can be built from subsets in order to reduce memory requirements. Vari02D with PCF is used for spatial data analysis of 2D data. It uses an ASCII data file and a binary pair comparison file produced by Prevar2D. Features implemented in Vari02D with PCF include: • the possibility to characterize the spatial continuity of one variable or the joined spatial continuity of two variables, • variogram surfaces for identifying directions of anisotropies, • directional variograms calculated along any direction, • several measures of spatial continuity. Not only the variogram but also the standardized variogram, the covariance, the correlogram, and the madogram are used to measure spatial continuity. • h-scatterplots to assess the meaning of these measures, • the identification and localization of pairs of data adversely affecting the measure of spatial continuity. Once identified, these pairs can be masked from the calculation interactively. • variogram clouds for identifying pairs of data values having the most influence on the measure of spatial continuity. Those pairs can also be located on the sample map.

Bent to the Earth

Bent to the Earth PDF Author: Blas Manuel De Luna
Publisher: Carnegie-Mellon University Press
ISBN:
Category : Poetry
Languages : en
Pages : 72

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Book Description
A collection of poetry by Blas Manuel De Luna.

Tropical Forests of the Guiana Shield

Tropical Forests of the Guiana Shield PDF Author: D. S. Hammond
Publisher: CABI
ISBN: 9781845930929
Category : Nature
Languages : en
Pages : 552

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Book Description
The Guiana Shield is an ancient geological formation located in the northern part of South America, covering an area of one million square kilometres. Despite its hostile environment, it is home to many unusual and highly specialized plants and animals, which constitute a rich area of biodiversity. Chapters in this book include hydrology, nutrient cycling, forest phenology, insect-plant interactions, forest microclimate, plant distributions, forest dynamics and conservation and management of flora and fauna. It provides a comprehensive and detailed review of the ecology, biology and natural history of the forests of the area.