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Abstrak :
Metal contamination is an increasing ecological and eco-toxicological risk. Understanding the processes involved in metal mobilization, sorption and mineralization in soils are key features for soil bioremediation. Following an introduction to the physical, chemical and biological components of contaminated soils, various chapters address the interactions of soil, microorganisms, plants and the water phase necessary to transfer metals into biological systems. These include topics such as potential hazards at mining sites; rare earth elements in biotic and abiotic acidic systems, manganese redox reactions, biomineralisation, uranium in seepage water, metal-resistant streptomycetes, mycorrhiza in re-forestation, metal (hyper)accummulation in plants, microbial metal uptake, and their potential for bioremediation.

Abstrak :
A natural phenomenon called as tubo belerang had occurred repeatedly in Lake Maninjau where the sulfide odorous water was apparent causing massive fish kill. Sulfur biogeochemistry in sulfur rich lakes can be critical when inputs of organic matter are high as in Lake Maninjau which has been exploited by floating cage fishery. The objective of the research is to study the biogeochemistry of sulfur in Lake Maninjau and to determine what factors might initiate the natural phenomenon occurrence. The Oxycontin layer had Sheffield from the depth of 20-40 m in 2006 to the depth of 10-20 m in 2008. The dynamics of bio geochemistry of sulfur in Lake Maninjau could be perceived from Sulfide profiles where increasing Sulfide concentrations detected annually. Higher Sulfide concentrations produced indicating more sulfate was reduced in the hypothalami layer. Sulfide concentration reached at level of 5 mg/L in the pore water of sediment. The toxic hydrogen sulfide concentrations were 10 - 120 ug/L. Sulfate concentrations ranged from 4 to 16 mg/L. Based on the pH values, the sulfur species H2S and HS were present in the lake water. Most of sulfur in Lake Maninjau were deposited in the sediment as iron Sulfide solids. The accumulation of organic matter in the hypothalami in the deepest part of the lake and Sheffield Oxycontin layer in four year observation periods indicated that the effect of floating cage fishery on the lake conditions was apparently atrocious. Increased in concentration of organic matter could play an important role on the dynamic of bio geochemistry of sulfur in Lake Maninjau and could be one of the major causes that might trigger the tubo belerang occurrence.

Abstrak :
The eleven chapters cover many aspects of the physics, geochemistry and biology of the lake, with a particular focus on the unique physical and geochemical features of the water column and on the ecological functioning of the surface waters. The impacts of the introduced fish species and the potential impacts of methane exploitation are also summarized. This multi-disciplinary book may also be used as an introduction to the limnology and biogeochemistry of large tropical lakes, as it covers various aspects of the physics, geochemistry, biology and ecology of the African Great Rift lakes.​

Abstrak :
This book describes comprehensively carbon (C) cycle process in global ecosystems and the potential and co-benefits of recarbonization of the biosphere. An ever increasing human population is disposing increasing amounts of carbon dioxide (CO2) into the atmosphere by land use and land cover changes but most importantly by burning of fossil fuels. This process severely perturbs the natural global C cycles and Earth system processes. Recarbonization of the biosphere is a potential strategy to redistribute C among global pools, and to enhance ocean but most importantly land-based C sinks. Sustainably managed and protected must be, in particular, the large and sensitive C stocks in permafrost, wetlands, peatlands, tropical rainforests and savannas, grasslands, degraded/desertified lands, and croplands. Recarbonization requires long-term management because C stocks grow with a progressive improvement in ecosystem health. Protecting and enhancing land-based C sinks serves food security aside contributing to climate change mitigation and adaptation.

Abstrak :
This book includes a comprehensive review of the processes controlling marine ecosystems, communities, and populations, as well as introduces concepts, approaches, and methods in the fast-changing fields of marine ecology and oceanography. This third edition maintains the structure of previous editions, introducing marine environments, dwelling on population, community, and ecosystem levels of organization, and emphasizing relevant biogeochemical and hydrodynamic mechanisms. The content is updated to include major features that new research has revealed in recent decades, but still highlights links to originators of critical ideas in the history of marine sciences. The greatest change in this edition is an expansion of each chapter to capture new awareness, and implications, of the rapid change affecting all aspects marine environments, driven by anthropogenic forces operating through climate and oceanographic mechanisms.