This book incorporates twenty contributions on diverse aspects of the environmental geochemistry in tropical and sub-tropical environments, drawing together extensive original research not readily available elsewhere. Coverage includes intercontinental comparisons drawn on paleoclimatology, environmental impacts of mining and geochemistry of continetal shelf sediments.

Inhalt

1 Regional Climate Changes: Where and How?.- 2 Palaeoenvironmental Reconstruction Based on Lacustrine Organic Matter: Examples from the Tropical Belt of South America and Africa.- 3 Catchment-Lagoon-Estuary-Coast Interactions of the Patos-Mirim System, South Brazil.- 4 Relationships between Simultaneous Methane, Nitrous Oxide and Carbon Dioxide Fluxes and Surface Soil Humidity and Temperature in the Mata Atlântica Subtropical Forest, Brazil.- 5 Modern Strategies for Environmental Sample Preparation and Analysis.- 6 The Importance of Assessing Uncertainties Related to Linear Calibration Curves: A Case Study for Flame Atomic Absorption Spectrometry.- 7 Characterisation and Sources of Nonpolar Lipids in Aerosols over the City of Rio de Janeiro.- 8 Determining the Provenience of Prehistoric Ceramic Artefacts from the Amazon Basin Using Geochemical Tracers.- 9 Exploring the Cation Exchange Capacity of Massapé Paulistana Vermiculite for Heavy Metal Removal from Aqueous Solutions.- 10 Variation of Heavy Metal Content with Depth in Sabana de Bogotá Soils.- 11 Acid Drainage of Coal Mining in Cundinamarca Department, Colombia.- 12 Mercury Pollution in Ghana: A Case Study of Environmental Impacts of Artisanal Gold Mining in Sub-Saharan Africa.- 13 Assessment of Water Quality in the Area of Colima Volcano (Colima, Mexico).- 14 The Pacific and Caribbean Rivers of Colombia: Water Discharge, Sediment Transport and Dissolved Loads.- 15 Reactive Processes of Organic Matter in the Amazon River.- 16 Distribution of Organic Carbon and Nitrogen in Particulate, Colloid and Dissolved Phases from the Amazon River System.- 17 Relationship of Metal Contaminants with Acid-Volatile Sulphides (AVS) in Tropical Estuarine Sediments: Potential Influence on Metal Distribution and Bioavailability.- 18 Modelling of Circulation and Water Exchange in a Hypersaline Coastal Lagoon: Lagoa de Araruama, Brazil.- 19 Sediment Oxygen and Nutrient Fluxes in Three Estuarine Systems of South-Eastern Brazil.- 20 Hydrogeochemical Characterisation of Groundwater Saline Intrusion in the Western Shore of Ceará, North-Eastern Brazil.- 21 Sepetiba Bay: A Case Study of the Environmental Geochemistry of Heavy Metals in a Subtropical Coastal Lagoon.- 22 Overview of the Biogeochemical Controls and Concerns with Trace Metal Accumulation in Mangrove Sediments.- 23 Effects of Bioturbation of the Sandprawn Callichirus Major on Nutrient Fluxes from Sediments of a Subtropical Sandy Beach, Brazil.- 24 Trace Metal Occurrence and Geochemical Distribution in Sediments from Mar Chiquita Coastal Lagoon, Argentina.- 25 Geochemistry and Spatial Distribution of Heavy Metals in Continental Shelf Sediments from two Offshore Oil Fields in South-Eastern Brazil.- 26 Geochemistry of Continental Shelf Sediments of the Ceará Coast, North-Eastern Brazil.- Taxonomic Index.