Selected papers regarding conditions found in Elk Lake, Minnesota being evidence for rapid climate change in the north-central United States. Among the topics: the chronology of Elk Lake sediments, climate and limnological settings, and deposition of calcium carbonate. Annotation copyright Book News
Reconstructing Human-Landscape Interactions demonstrates the high quality of work presented at the first Developing International Geoarchaeology conference (DIG 2005), held in Saint John, New Brunswick, Canada, and exemplifies the over-riding theme of this discipline. People have always used the landscape in many ways: as a place to live, as a place to grow crops, as a source of natural resources. Those actions leave their traces. The characteristics of the landscape constrain which activities are possible, just as social and cultural habits condition people’s connection with the environment. Geoarchaeology is about finding the traces of these interactions, and using them to reconstruct how people in the past behaved in their environmental context. The material covered in the proceedings ranges from broad themes of climate change and landscape use, to more specific subjects such as river avulsion and the use of tidal ponds. The papers move us from the land to the coastal margin and back onto land to examine particular techniques. The final paper leads us beyond archaeology and points out that geoarchaeological data must contribute to the debate about the sustainability of present-day land-use practices: a fitting challenge to take us into the future.
Numerous experts including ecologists, geneticists, paleontologists and climatologists, investigate the response of terrestrial organisms to changes in their environment. The volume comprises an introductory and a final chapter by the editors as well as another 35 contributions. These are divided into six sections: 1. past environmental changes - the late-Quaternary; 2. spatial responses to past changes; 3. mechanisms enabling spatial responses; 4. evolutionary responses to past changes; 5. mechanisms enabling evolutionary responses; 6. predicted future environmental changes and simulated responses. The overwhelming and unanimous conclusion of all contributors is that forecasted global environmental changes pose a severe threat to the integrity of ecosystems worldwide and to the survival of at least some species.
The Holocene spans the 11,500 years since the end of the last Ice Age and has been a period of major global environmental change. However the rate of change has accelerated during the last hundred years, due largely to human impacts and this has led to a growing concern for the future of our environmental resources. Global Change in the Holocene demonstrates how reconstructing the record of past environmental change can provide us with essential knowledge about how our environment works and presents the reader with an informed viewpoint from which to project realistic future scenarios. The book brings together key techniques that are widely used in Holocene research, such as radiocarbon dating, dendrochronology and sediment analysis and offers a comprehensive analysis of various archives of environmental change including instrumental and documentary records, corals, lake sediments, glaciers and ice cores. This reference will be an informative and cutting-edge resource for all researchers in the fields of climate change, environmental science, geography, palaeoecology and archaeology.
Biomass burning profoundly affects atmospheric chemistry, the carbon cycle, and climate and may have done so for millions of years. Bringing together renowned experts from paleoecology, fire ecology, atmospheric chemistry, and organic chemistry, the volume elucidates the role of fire during global changes of the past and future. Topics covered include: the characterization of combustion products that occur in sediments, including char, soot/fly ash, and polycyclic aromatic hydrocarbons; the calibration of these constituents against atmospheric measurements from wildland and prescribed fire emissions; spatial and temporal patterns in combustion emissions at scales of individual burns to the globe.
NOW A POWERFUL CORE OF AUTHORS PROVIDES CLEAR, COMPELLING, AND COMPREHENSIVE EVIDENCE AND ANSWERS FOR SOME OF THE MOST COMMON POINTS OF CONTENTION ON THIS ARGUMENT.
This book describes thoroughly the North American Climate of the past 65 million years, with special emphasis on the last 21,000 years, as revealed by paleoclimatic observations and climate models. It analyzes weather observations over the past century and satellite measurements of the last few decades to develop a picture of more recent climatic trends. It explains how global climate models are used to simulate and project climate, and presents the application of these models to reproduce recent climate variations and predict future North American climate. It answers the critical question of whether observed climate change is due to natural variations or human activity.
