Download or read book Present and Past Vegetation and Climate in the Northern Andes Cordillera Central Colombia written by Hendrik Johannes Louis Witte and published by . This book was released on 1994 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Present and Past Vegetation and Climate in the Nothern Andes Cordillera Central Colombia written by Hendrik Johannes Louis Witte and published by . This book was released on 1994 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reconstruction of Last Glacial Climate in the Northern Andes Through the Analysis of Subfossil Woods written by Catalina Orejuela Cardona and published by . This book was released on 2017* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The reconstruction of tropical Andean past climates is limited by the scarcity of appropriate paleoenvironmental records, creating a gap in the comprehension of tropical premontane ecosystems during past climatic extremes. Last Glacial Volcano-clastic fan deposits of Colombian Central Cordillera provide a unique possibility to study the tropical vegetation response to past climatic changes in an area of main biological and cultural importance. We analyzed the microanatomical features of a mummified wood dated to represent a time window of the Last Glacial, most likely between 120-50kyr. The wood was identified as Jacaranda copaia (Bignoniaceae). Based on the current distribution of J.copaia specimens from herbaria, we modeled the potential paleodistribution of the species under glacial conditions using ecological modeling techniques, meanwhile the results were challenged by empirical evidence. Our findings suggest that the presence of J.copaia at 2000 m altitude in the past imply necessarily a warmer climate than today, and microanatomical features suggest more seasonal conditions than present.

Download or read book Tropical Rainforest Responses to Climatic Change written by Mark Bush and published by Springer Science & Business Media. This book was released on 2011-08-17 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated and expanded second edition of a much lauded work provides a current overview of the impacts of climate change on tropical forests. The authors also investigate past, present and future climatic influences on the ecosystems with the highest biodiversity on the planet. Tropical Rainforest Responses to Climatic Change, Second Edition, looks at how tropical rain forest ecology is altered by climate change, rather than simply seeing how plant communities were altered. Shifting the emphasis on to ecological processes, e.g. how diversity is structured by climate and the subsequent impact on tropical forest ecology, provides the reader with a more comprehensive coverage. A major theme of the book is the interaction between humans, climate and forest ecology. The authors, all foremost experts in their fields, explore the long term occupation of tropical systems, the influence of fire and the future climatic effects of deforestation, together with anthropogenic emissions. Incorporating modelling of past and future systems paves the way for a discussion of conservation from a climatic perspective, rather than the usual plea to stop logging. This second edition provides an updated text in this rapidly evolving field. The existing chapters are revised and updated and two entirely new chapters deal with Central America and the effect of fire on wet forest systems. In the first new chapter, the paleoclimate and ecological record from Central America (Lozano, Correa, Bush) is discussed, while the other deals with the impact of fire on tropical ecosystems. It is hoped that Jonathon Overpeck, who has been centrally involved in the 2007 and 2010 IPCC reports, will provide a Foreword to the book.

Download or read book Land Use Change and Mountain Biodiversity written by Eva M. Spehn and published by CRC Press. This book was released on 2006-01-13 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of the worldwide biodiversity program DIVERSITAS, the Global Mountain Biodiversity Assessment (GMBA) assesses the biological richness of high-elevation biota. GMBA's focus includes the uppermost forest regions or their substitute rangeland vegetation, the treeline ecotone, and the alpine and nival belts. Providing more than description, the GM

Download or read book Biodiversity written by N. Biedinger and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodiversity, sometimes simply understood as "diversity of species", is a specific quality of life on our planet, the dimensions and importance of which have just lately been fully realized. Today we know that "biological diversity is a global asset of incalculable value to present and future generations" (Kofi Annan). Biodiversity is spread unequally over the world: in fact, the main share of biological resources worldwide is harboured predominantly by the so-called developing countries in the tropics and sub tropics. Therefore, Biodiversity - A Challenge for Development Research and Policy was chosen as the title for an international conference which was held in Bonn in 1997 as one of the first major events organized by the then newly established North-South Centre for Development Research (ZEF) at Rheinische Friedrich-Wilhelms-Universitat Bonn (Germany). Since the ZEF, founded by the Senate of the University of Bonn in 1995, has played a central role in turning Bonn into a centre for international cooperation and North-South dialogue. The Centre is a product of the Bonn Berlin agreement of July 1994 which was adopted to offset the effects caused by the Parliament and much of the Government moving to Berlin. It fits in well with the double strategy to strengthen Bonn's position as an interna tional science arena and as an eminent place for development policy and the national and supranational agencies dealing with this issue.

Download or read book Tropical Rainforest Responses to Climatic Change written by John Flenley and published by Springer Science & Business Media. This book was released on 2007-06-20 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to examine how tropical rain forest ecology is altered by climate change, rather than simply seeing how plant communities were altered. The book’s goal is to provide a current overview of the impacts of climate change on tropical forests. It aims to investigate past, present, and future climatic influences on the ecosystems with the highest biodiversity on the planet.

Download or read book The Vegetation of the P ramos of the Colombian Cordillera Oriental written by A. M. Cleef and published by Lubrecht & Cramer Limited. This book was released on 1981 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Connecting Mountain Hydroclimate Through the American Cordilleras written by Alfonso Fernandez and published by Frontiers Media SA. This book was released on 2021-05-18 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book La Cordillera Central Colombiana transecto Parque los Nevados written by and published by . This book was released on 2003 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mountains Climate and Biodiversity written by Carina Hoorn and published by John Wiley & Sons. This book was released on 2018-02-22 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountains, Climate and Biodiversity: A comprehensive and up-to-date synthesis for students and researchers Mountains are topographically complex formations that play a fundamental role in regional and continental-scale climates. They are also cradles to all major river systems and home to unique, and often highly biodiverse and threatened, ecosystems. But how do all these processes tie together to form the patterns of diversity we see today? Written by leading researchers in the fields of geology, biology, climate, and geography, this book explores the relationship between mountain building and climate change, and how these processes shape biodiversity through time and space. In the first two sections, you will learn about the processes, theory, and methods connecting mountain building and biodiversity In the third section, you will read compelling examples from around the world exploring the links between mountains, climate and biodiversity Throughout the 31 peer-reviewed chapters, a non-technical style and synthetic illustrations make this book accessible to a wide audience A comprehensive glossary summarises the main concepts and terminology Readership: Mountains, Climate and Biodiversity is intended for students and researchers in geosciences, biology and geography. It is specifically compiled for those who are interested in historical biogeography, biodiversity and conservation.

Download or read book Central Andean Vegetation Response to Rapid Paleoclimate Changes written by Nicole Alana Sublette Mosblech and published by . This book was released on 2012 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: A key question for biologists, conservationists and resource planners is how Andean forests will respond to predicted climate extremes within the current century. Unfortunately, little is understood regarding past extreme climate events in the Central Andes and the response of Andean plant communities to them. Do vegetational changes arise from sudden changes in climate, or can they occur after a period of steady, incremental change, when a climatic threshold is exceeded? These predictions were tested in the tropical Andes, one of the richest regions of biodiversity on the planet. The study spanned the Late Pleistocene (c. 94 thousand years ago, or ka) to modern time. The potential causes of rapid vegetational change obtained from the fossil pollen of lake sediments compared with the indices of climate change measured in the isotopic content of stalagmites. As humans have become an important factor in the Andean forest landscape in the last several millennia, their impact on the response of Andean forest communities to climate and the likelihood of abrupt ecological change was also studied. A new [delta]18O record from the western Amazon (-3.02°, -78.14°, 980 meters above sea level or masl) revealed significant climatic oscillations within the aseasonal region of the Amazon Basin from c. 94-6 ka. A second cave stalagmite record from the eastern Andes (-5.70°, -77.90°, 1920 masl) revealed relative climatic stability buffered by long-term cloud presence from c. 17 ka to the present. Both isotopic records revealed variations in precipitation and South American Summer Monsoon conditions driven by precessional isolation. The records also revealed finer-scale variability and abrupt events primarily driven by the North Atlantic, which were manifested within the tropics via latitudinal shifts in the Intertropical Convergence Zone. An abrupt, wet-climate event was identified within the southern Neotropics at c. 13 ka, which may have been related to the Antarctic climatic oscillations just prior to the Younger Dryas. A rapid shift toward sustained Andean aridity at c. 11 ka was also observed in other isotopic records. The response of vegetation to climate and human actions was investigated via fossil pollen and charcoal recovered from three ancient lakes. Ecological variability within cloud forests of northern Peru responded to the fluctuations in El Niño Southern Oscillation activity. The oldest fossil pollen evidence of maize agriculture within Andean cloud forests was identified c. 3.2 ka. Changing precipitation conditions appeared to change the human use at all lake sites, prompting switches in staple crops and contributing to the establishment of agroforestry c. 1.2 ka. Comparisons of high-resolution, independently-dated paleoclimate and paleoecological records indicated that, for at least the last 15 ka, Andean forests responded quickly to abrupt, large climate events. In each case, the ecological response was non-linear and longer lasting than the underlying climate event, requiring nearly twice as long as the climate event to return to an approximate equilibrium with environmental conditions in the absence of human disturbance. No abrupt shifts in Andean forest communities were observed in response to gradual climatic changes. Regional coherence of paleoecological shifts within southern Ecuador and both northern and southern Peru clearly indicated human control over Andean mid-elevational landscapes in the late Holocene by c. 4 ka. Humans impacted the local forest communities by disrupting the natural cycle of climatic change and the ecological responses. As a consequence, Andean forests have displayed a clear compositional shift which are presently dominated by taxa well-adapted to disturbance and fire. Increased external stressors, including greater fire frequencies, have reduced the resilience of montane forests, making abrupt change to smaller-magnitude climate events more probable than in the past.

Download or read book The Andes written by Axel Borsdorf and published by Springer. This book was released on 2015-03-12 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Andes are attracting global interest again: they hold valuable mineral resources, tourists appreciate their great natural beauty and the diversity of indigenous cultures, climbers scale rock and ice faces, while many others are intrigued by regional political developments, such as the Bolivarian revolution in Venezuela or the almost unfettered hegemony of the neoliberal economic model in Chile. This volume is the first attempt for decades to present a complete overview of the longest mountain chain on the planet – a region of remarkable climatic, floristic and geologic diversity, where advanced civilization developed well before the arrival of the Spanish. Today the Andes continue to be characterized by their ethnic, demographic, cultural and economic diversity, as well as by the disparity of local socioeconomic groups. The Andean countries pursue a wide range of approaches to tackle the challenges of making the best use of their natural and cultural potential without damaging their ecological basis, as well as to overcome economic disparity and foster social cohesion. This book provides insights into this unique region and its most pressing issues, complemented by a wealth of pictures and comprehensive diagrams, which, in sum, help to better understand these fascinating mountains.

Download or read book A Framework for Ecological Evaluation Oriented at the Establishment and Management of Protected Areas written by Martha Teresa Fandiño Lozano and published by . This book was released on 1996 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marsupial Frogs written by William E. Duellman and published by JHU Press. This book was released on 2015-10-15 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exceptional tome should find its way into the libraries of serious herpetologists, tropical biologists, and developmental biologists. Included in this book are- A molecular phylogeny of the family Hemiphractidae- A thorough osteological analysis- A review of external morphological features- An overview of the evolution of reproductive modes- A biogeographic synthesis- Keys to genera and species- Diagnosis and thorough description of each species of marsupial frog- Colored physiographic maps depicting species distributions

Download or read book Ethnobotany of the Andes written by Narel Y. Paniagua-Zambrana and published by Springer. This book was released on 2020-08-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in recent years has increasingly shifted away from purely academic research, and into applied aspects of the discipline, including climate change research, conservation, and sustainable development. It has by now widely been recognized that “traditional” knowledge is always in flux and adapting to a quickly changing environment. Trends of globalization, especially the globalization of plant markets, have greatly influenced how plant resources are managed nowadays. While ethnobotanical studies are now available from many regions of the world, no comprehensive encyclopedic series focusing on the worlds mountain regions is available in the market. Scholars in plant sciences worldwide will be interested in this dynamic content. The field (and thus the market) of ethnobotany and ethnopharmacology has grown considerably in recent years. Student interest is on the rise, attendance at professional conferences has grown steadily, and the number of professionals calling themselves ethnobotanists has increased significantly. Various societies of such professionals include the Society for Economic Botany, the International Society of Ethnopharmacology, the Society of Ethnobiology, the International Society for Ethnobiology, and many regional and national societies in the field that currently have thousands of members. Growth has been most robust in BRIC countries. This new MRW on Ethnobotany of Mountain Regions covers the latest scholarship in the field of mountain research. It offers the best and latest research on a full range of descriptive, methodological, theoretical, and applied research on the most important plants for each region. Each contribution was scientifically rigorous and contributes to the overall field of study.

Download or read book Ecology and Conservation of Neotropical Montane Oak Forests written by Maarten Kappelle and published by Springer Science & Business Media. This book was released on 2006-05-18 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the range of natural and managed oak forests in the highlands of tropical America. Providing an understanding of ecological patterns and processes that determine the structure and functioning of these forests, this volume aims to serve as a basis for sustainable forest management and biodiversity conservation.