Does neutral theory explain community composition in the Guiana Shield forests? - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Does neutral theory explain community composition in the Guiana Shield forests? write by Olaf Bánki Sicco. This book was released on 2010. Does neutral theory explain community composition in the Guiana Shield forests? available in PDF, EPUB and Kindle. Recent years have seen a fierce debate about the causes of beta-diversity, the change in species composition over landscapes, in tropical rainforests. The introduction of neutral models has spurred this debate, by assuming that species composition changes randomly over landscapes with dispersal limitation as the driving ecological process. In this study the interaction between local and regional diversity of trees is investigated. We inventoried 61 1-ha plots in forests on brown and white sands, and on bauxite mountains in Guyana and Suriname. These data combined with earlier data led to the first biogeographical study on a species level involving 156 forest plots ranging from Venezuela to French Guiana. Forest composition changed dramatically between forest types, and at geographical distances. In general, forest composition followed geological patterns in the Guianas. Differences in plant attributes between the forest groups revealed a spectrum in covariation. On the one end of this spectrum a high dominance of trees with large seeds in dry fruits was combined with high wood densities in several forest types. On the other end a high dominance of trees and species with smaller seeds in fleshy fruits was combined with relatively low community averaged wood density. This spectrum could reflect different colonizing strategies of trees in the forest types, and could have an effect on potential dispersers. With neutral-like dynamical community models, different hypotheses on the low diversity of the white sand forest were evaluated. Forests on white and brown sands draw their species from different regional species pools. We provide strong evidence that asymmetric environmental filtering and a lower regional diversity (possibly due to the smaller size of the white sand area) could influence the lower diversity found in white sand forests compared with neighboring brown sand.
Does Neutral Theory Explain Community Composition in the Guiana Shield Forests?
Does Neutral Theory Explain Community Composition in the Guiana Shield Forests? - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Does Neutral Theory Explain Community Composition in the Guiana Shield Forests? write by O. S. Bánki. This book was released on 2010. Does Neutral Theory Explain Community Composition in the Guiana Shield Forests? available in PDF, EPUB and Kindle.
Tropical Forests of the Guiana Shield
Tropical Forests of the Guiana Shield - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Tropical Forests of the Guiana Shield write by D. S. Hammond. This book was released on 2005. Tropical Forests of the Guiana Shield available in PDF, EPUB and Kindle. 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.
Tropical Forest Community Ecology
Tropical Forest Community Ecology - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Tropical Forest Community Ecology write by Walter Carson. This book was released on 2011-08-31. Tropical Forest Community Ecology available in PDF, EPUB and Kindle. Historically, tropical ecology has been a science often content with descriptive and demographic approaches, which is understandable given the difficulty of studying these ecosystems and the need for basic demographic information. Nonetheless, over the last several years, tropical ecologists have begun to test more sophisticated ecological theory and are now beginning to address a broad array of questions that are of particular importance to tropical systems, and ecology in general. Why are there are so many species in tropical forests and what mechanisms are responsible for the maintenance of that vast species diversity? What factors control species coexistence? Are there common patterns of species abundance and distribution across broad geographic scales? What is the role of trophic interactions in these complex ecosystems? How can these fragile ecosystems be conserved? Containing contributions from some of the world’s leading tropical ecologists, Tropical Forest Community Ecology provides a summary of the key issues in the discipline of tropical ecology: Includes contributions from some of the world’s leading tropical ecologists Covers patterns of species distribution, the maintenance of species diversity, the community ecology of tropical animals, forest regeneration and conservation of tropical ecosystems
Why Forests? Why Now?
Why Forests? Why Now? - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Why Forests? Why Now? write by Frances Seymour. This book was released on 2016-12-27. Why Forests? Why Now? available in PDF, EPUB and Kindle. Tropical forests are an undervalued asset in meeting the greatest global challenges of our time—averting climate change and promoting development. Despite their importance, tropical forests and their ecosystems are being destroyed at a high and even increasing rate in most forest-rich countries. The good news is that the science, economics, and politics are aligned to support a major international effort over the next five years to reverse tropical deforestation. Why Forests? Why Now? synthesizes the latest evidence on the importance of tropical forests in a way that is accessible to anyone interested in climate change and development and to readers already familiar with the problem of deforestation. It makes the case to decisionmakers in rich countries that rewarding developing countries for protecting their forests is urgent, affordable, and achievable.
