Download Peatlands of the Western Guayana Highlands, Venezuela: by O. Huber, J. A. Zinck (auth.), Joseph Alfred Zinck, Otto PDF

By O. Huber, J. A. Zinck (auth.), Joseph Alfred Zinck, Otto Huber (eds.)

The Guayana Highlands in northeastern tropical the US, emerging from lowland rain forests and savannas as much as 3000 m elevation, are characterised via historical tablelands known as tepuis. The peatlands that built at the tepuis represent specific and engaging ecosystems and are the point of interest of this quantity, which begins with an summary of tropical and subtropical peats, through an creation to the geo-ecological gains of the Guayana area as a complete, with distinct emphasis at the variety of the crops conceal from lowlands to uplands to highlands. The middle topic facilities at the homes and relationship of the peat deposits and the translation of the chronological checklist when it comes to previous environmental alterations. The good illustrated e-book will entice a extensive variety of scientists drawn to tropical highland peats, together with quaternarists, soil scientists, geomorphologists, geographers, geologists, ecologists, botanists, hydrologists, conservationists, and land use planners.

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Additional resources for Peatlands of the Western Guayana Highlands, Venezuela: Properties and Paleogeographic Significance of Peats

Sample text

To some respect, peat and peatland features in tropical and subtropical regions are not fundamentally different from those of temperate–boreal peats. Peat properties and peatland characteristics are commonly used as diagnostic criteria to classify peat and peatlands. A. Zinck Mesic 374 193 150 84 Sapric 289 163 144 100 temperatures in the lower layers of the peat (Moore et al. 2007). Moisture content is an essential peat property as it controls the accumulation and evolution of organic materials.

Geomorphology 9:235–241 Gaudig G, Couwenberg J, Joosten H (2006) Peat accumulation in kettle holes: bottom up or top down? Mires and Peat 1: Art. 6. net/ Gore AJP (1983) Introduction. In: Gore AJP (ed) Ecosystems of the world – 4A mires: swamp, bog, fen, moor. Elsevier, New York, pp 1–34 Gorham E (1991) Northern peatlands: role in the carbon cycle and probable responses to climatic warming. Ecol Appl 1:182–195 Hairiah K, Sitompul SM, van Noordwijk M, Palm C (2001) Carbon stocks of tropical land use systems as part of the global C balance: effects of forest conversion and options for ‘clean development’ activities.

The largest part of the Venezuelan Guayana (about 83%) is covered by a variety of tropical and montane forests. The rest of the area shows savannas and other herbaceous vegetation types, shrublands, and pioneer vegetation growing either on local rock outcrops or extensive whitesand deposits. The flora is very rich, including around 10,000 different species of vascular plants with more than one third being endemic. The degree of endemism increases significantly with elevation, while the total number of species decreases in the same direction.

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