The legacy of Alexander von Humboldt (1769–1859) looms large over the natural sciences. His 1799–1804 research expedition to Central and South America with botanist Aimé Bonpland set the course for the great scientific surveys of the nineteenth century, and inspired such essayists and artists as Emerson, Goethe, Thoreau, Poe, and Church. The chronicles of the expedition were published in Paris after Humboldt’s return, and first among them was the 1807 “Essay on the Geography of Plants.” Among the most cited writings in natural history, after the works of Darwin and Wallace, this work appears here for the first time in a complete English-language translation. Covering far more than its title implies, it represents the first articulation of an integrative “science of the earth, ” encompassing most of today’s environmental sciences. Ecologist Stephen T. Jackson introduces the treatise and explains its enduring significance two centuries after its publication.

There is little dispute within the scientific community that humans are changing Earth's climate on a decadal to century time-scale. By the end of this century, without a reduction in emissions, atmospheric CO2 is projected to increase to levels that Earth has not experienced for more than 30 million years. As greenhouse gas emissions propel Earth toward a warmer climate state, an improved understanding of climate dynamics in warm environments is needed to inform public policy decisions. In Understanding Earth's Deep Past, the National Research Council reports that rocks and sediments that are millions of years old hold clues to how the Earth's future climate would respond in an environment with high levels of atmospheric greenhouse gases. Understanding Earth's Deep Past provides an assessment of both the demonstrated and underdeveloped potential of the deep-time geologic record to inform us about the dynamics of the global climate system. The report describes past climate changes, and discusses potential impacts of high levels of atmospheric greenhouse gases on regional climates, water resources, marine and terrestrial ecosystems, and the cycling of life-sustaining elements. While revealing gaps in scientific knowledge of past climate states, the report highlights a range of high priority research issues with potential for major advances in the scientific understanding of climate processes. This proposed integrated, deep-time climate research program would study how climate responded over Earth's different climate states, examine how climate responds to increased atmospheric carbon dioxide and other greenhouse gases, and clarify the processes that lead to anomalously warm polar and tropical regions and the impact on marine and terrestrial life. In addition to outlining a research agenda, Understanding Earth's Deep Past proposes an implementation strategy that will be an invaluable resource to decision-makers in the field, as well as the research community, advocacy organizations, government agencies, and college professors and students.

Poverty, food insecurity, biodiversity and habitat loss are persistent global challenges that are further exacerbated by the impacts of climate change. These challenges are particularly hard felt in the tropical landscapes of the global South where tensions between local socio-economic and international environmental commitments are pervasive. Due to the apparent failure of sectorial approaches to address such challenges, more holistic strategies are being increasingly promoted. Integrated landscape approaches are one such example; essentially a governance strategy that engages multiple stakeholders to reconcile societal and environmental objectives at the landscape scale to identify trade-offs and potential synergies for more sustainable and equitable land management. Integrated landscape approaches have been widely endorsed in the international and national policy arena, within academia, and in the discourse surrounding conservation and development funding. However, despite strong scientific theories and concepts, the implementation, and particularly evaluation and reporting, of integrated landscape approaches in the tropics remains poorly developed. The COLANDS initiative represents an explicit attempt to contribute towards the evidence base by operationalizing integrated landscape approaches in Ghana, Zambia and Indonesia. In this regard we aim to provide regular, honest reporting of progress. This book details the experiences of researchers engaged in these landscape-scale initiatives across the first two years of implementation. With dedicated chapters on current progress, biodiversity, methods and evaluation the book provides useful tools and resources for research and implementation. Furthermore, we consider the complex socio-political challenges associated with landscape approaches with chapters focussed on how to effectively engaging stakeholders and understanding the national policy environment. We then provide profiles of the sites in each of the three countries and describe the historical context, current status and potential for more integrated landscape governance. This book explores the techniques and strategies that can be deployed to improve the governance and management of land and natural resources and better reconcile conservation and development objectives in tropical landscapes undergoing rapid change. Contents Foreword Acknowledgments Author bios Executive Summary Introduction and backgroundJames Reed, Mirjam Ros-Tonen and Terry Sunderland Integrated landscape approaches in the tropicsJames Reed, Amy Ickowitz, Colas Chervier, Houria Djoudi, Kaala B Moombe, Mirjam Ros-Tonen, Malaika Yanou, Elizabeth L Yuliani and Terry Sunderland The role of biodiversity in integrated landscape approachesJoli R Borah, Yves Laumonier, Eric RC Bayala, Houria Djoudi, Davison Gumbo, Kaala B Moombe, Elizabeth L Yuliani and Mathurin Zida Engaging multiple stakeholders to reconcile climate, conservation and development objectives in tropical landscapesJames Reed, Jos Barlow, Rachel Carmenta, Josh van Vianen and Terry Sunderland Theories of change and monitoring and evaluation types for landscape approachesColas Chervier, Marie-Gabrielle Piketty and James Reed A methods toolbox for integrated landscape approachesJames Reed, Joli R Borah, Colas Chervier, James Langston, Moira Moeliono, Alida O’Connor, Elizabeth L Yuliani and Terry Sunderland Potential for integration? An assessment of national environment and development policiesAlida O’Connor, Houria Djoudi, Moira Moeliono, Kaala B Moombe and Freddie S Siangulube Context for landscape approach implementation in the Western Wildlife Corridor Landscape (Northern Ghana)Eric RC Bayala, Houria Djoudi, Mirjam Ros-Tonen and Mathurin Zida Understanding landscape dynamics: A case study from Kalomo DistrictKaala B Moombe, Freddie S Siangulube, Bravedo M Mwaanga, Tiza I Mfuni, Malaika P Yanou, Davison J Gumbo, Rays C Mwansa and Gilbert Juunza Kapuas Hulu: A background analysis to implementing an integrated landscape approachAugusta M Anandi, Elizabeth L Yuliani, Moira Moeliono, Yves Laumonier and Sari Narulita Conclusion and the way forwardTerry Sunderland, James Reed and Mirjam Ros-Tonen

This is the only comprehensive account of all eight species in the genus Adansonia. It describes the historical background from the late Roman period to the present. It covers the extraordinary variety of economic uses of baobabs. There are also appendices on vernacular names, gazetteer, economics, nutrition and forest mensuration. This book fills a gap in the botanical literature. It deals with a genus that has fascinated and intrigued scientists and lay persons for centuries.