Preface -- Concerns and Threats of Heavy Metals Contamination on Aquatic Ecosystem -- Pollution in Aquatic Environs: Sources and consequences -- A Recent Scenario of Groundwater Quality in Northwest Himalaya, India -- Polycyclic aromatic hydrocarbons: Toxic Effects and their Bioremediation Strategies -- Mechanisms and importance of phytoremediation -- Role of Soil Biota and Associated Threats -- Viability of in-situ and ex-situ bioremediation approaches for degradation of noxious substances in stressed environs -- Bioremediation: A viable approach for degradation of petroleum hydrocarbon -- Application of macrophytes for remediation of wastewater in constructed wetlands -- Application of Biotechnology for restoration of degraded environs -- Role of Free Floating Aquatic Macrophytes in abatement of the disturbed Environs -- Genetically Modified Microbes as Biofertilizers -- Nanotechnology: A Modern Waste management approach -- Restoration of Heavy Metal Contaminated Environs through Ectomycorrhizal Symbiosis -- Index.

The rapid thriving of industries, conversion of agricultural land to residential areas, habitat destruction, deforestation and use of recalcitrant synthetic substances enhanced the rate of degradation of the environment. Although there are various conventional techniques for degradation and cleaning of noxious pollutants from disturbed environs, they are energy inefficient and costly to install. Bioremediation has emerged recently as an alternative and novel approach to manage and control environmental pollutants. This volume focuses explicitly on the remediation of noxious substances in stressed environs. It includes expert-contributed chapters on bio-monitoring by way of evaluating the relationship of biota with the polluted/stressed environs, sustainable plant-based degradation of noxious pollutants, and the application of biotechnologies to achieve tailored responses. Academicians, researchers, scientists and students will find this work essential for sustainable treatment of noxious pollutants. This book also serves as a core guide for training, teaching and research in conservation biology and environmental rehabilitation.