Trace Elements In The Rhizosphere

The first book devoted to the complex interactions between trace elements, soils, plants, and microorganisms in the rhizosphere, Trace Elements in the Rhizosphere brings together the experimental, investigative, and modeling branches of rhizosphere research. Written by an international team of authors, it provides a comprehensive overview of the mechanisms and fate of trace elements in the rhizosphere and the application of this information to phytoremediation technologies and sustainable agriculture and forestry. With ecological and environmental issues moving to the forefront, the focus of rhizosphere research has increasingly shifted to studying the effect of plant-microbial association on the bioavailability, uptake, and transformation of inorganic and organic contaminants in soils. Contaminant-rhizosphere interactions have attracted renewed attention as plants have been proposed for use in the remediation of contaminated soils. Trace Elements in the Rhizosphere provides an in-depth look at rhizosphere processes and leads the way to further understanding and developments in this field.

The rhizosphere in soil environments refers to the narrow zone of soil influenced by the root and exudates. Microbial populations in the rhizosphere can be 10 - 100 times larger than the populations in the bulk soil. Therefore, the rhizosphere is bathed in root exudates and microbial metabolites and the chemistry and biology at the soil-root interface is governed by biotic (plant roots, microbes) and abiotic (physical and chemical) interactions. The research on biotic and abiotic interactions in the rhizosphere should, thus, be an issue of intense interest for years to come. This book, which consists of 15 chapters, addresses a variety of issues on fundamentals of microscopic levels and the impact on food chain contamination and the terrestrial ecosystem. It is an essential reference work for chemists and biologists studying environmental systems, as well as earth, soil and environmental scientists. * 15 chapter book, which addresses a variety of issues on fundamentals of microscopic levels and the impact on food chain contamination and the terrestrial ecosystem

Trace elements occur naturally in soils and some are essential nutrients for plant growth as well as human and animal health. However, at elevated levels, all trace elements become potentially toxic. Anthropogenic input of trace elements into the natural environment therefore poses a range of ecological and health problems. As a result of their persistence and potential toxicity, trace elements continue to receive widespread scientific and legislative attention. Trace Elements in Soils reviews the latest research in the field, providing a comprehensive overview of the chemistry, analysis, fate and regulation of trace elements in soils, as well as remediation strategies for contaminated soil. The book is divided into four sections: • Basic principles, processes, sampling and analytical aspects: presents an overview including general soil chemistry, soil sampling, analysis, fractionation and speciation. • Long-term issues, impacts and predictive modelling: reviews major sources of metal inputs, the impact on soil ecology, trace element deficient soils and chemical speciation modelling. • Bioavailability, risk assessment and remediation: discusses bioavailability, regulatory limits and cleanup technology for contaminated soils including phytoremediation and trace element immobilization. • Characteristics and behaviour of individual elements Written as an authoritative guide for scientists working in soil science, geochemistry, environmental science and analytical chemistry, the book is also a valuable resource for professionals involved in land management, environmental planning, protection and regulation.

Still the Gold Standard Resource on Trace Elements and Metals in SoilsThis highly anticipated fourth edition of the bestselling Trace Elements in Soils and Plants reflects the explosion of research during the past decade regarding the presence and actions of trace elements in the soil-plant environment. The book provides information on the biogeoch

"Containing articles written by 17 scientists from 10 countries, this book describes different aspects of analytical chemistry, rhizosphere chemistry and the environmental chemistry of trace elements. It also highlights areas where collaboration between biochemists, soil scientists, analytical chemists and plant physiologists would be most productive." "The contributors focus on the current state of our knowledge and future potential for understanding the biogeochemistry of both well-known toxic elements and rare ultratrace elements of unknown biological role. Since the environmental chemistry of trace elements is controlled by a number of different interacting processes, there are also detailed reviews of the biology and chemistry of the rhizosphere, factors affecting the bioavailability of different trace elements in soil, potential phytoremediation methodologies and other applications."--Résumé de l'éditeur.

Concerns regarding heavy metal contamination in terrestrial ecosystems have prompted increasing efforts on limiting their bioavailability in the root zone. The complexity of the hydrologic system gives rise to the need for understanding the fate and transport of trace elements in the soil-water-plant environment. Dynamics and Bioavailability of Heavy Metals in the Rootzone provides a multidisciplinary approach with emphasis on geohydrology, plant and soil science, and environmental chemistry. The primary focus of this book is on different approaches that describe the dynamics of heavy metals in the soil system. These approaches are key to providing direct information on the concentration of heavy metals and hence on their transport, toxicity, and bioavailability. The book includes chapters covering equilibrium and kinetic models of heavy metal interactions as well as non-equilibrium transport models. It also discusses chemical processes controlling soil solution concentrations and modeling of heavy metals adsorption. Addressing the biological component of heavy metal dynamics, this work examines rhizosphere microorganisms and phytoremediation. Colloid-associated transport, which can result in groundwater contamination, is discussed in relation to reclaimed mine sites. The authors also present an overview of recent advancements in the biogeochemistry of trace elements and their environmental implications. Additional chapters include examination of various natural environments including runoff waters at the watershed scale, heavy metal transformation in wetlands, dynamics of trace metals in frequently flooded soils, and effects on crops in biosolid-amended soils. Reliable assessment of potential risks resulting from the transport of trace elements in the soil environment requires the examination of complex chemical and biological interactions due to the heterogeneous nature of soils. This text describes the current state of the art in this field and explores innovative experimental and theoretical/modeling approaches that will enhance this knowledge. The book provides a coherent presentation of recent advances in techniques, modeling, and dynamics and bioavailability of heavy metals in the root zone.

Trace element resouces: trace elements in rocks and minerals; trace elments in soils: total contents; soluble contens and availability; Review on individual trace elements: boron (B); chlorine (Cl); Cobalt (Co); Copper(Cu); Iodine(I); Iron(Fe); Manganese(Mn); Molybdenum(Mo); Selenium(Se); Zinc(Zn).

The quality of food is such a live issue at the moment that this title is an essential tool for researchers in a variety of disciplines. It provides a review of the key features of trace elements in soils, plants and the food web on which human beings survive. The authors' intention is to summarize up-to-date interdisciplinary data for the concise presentation of our understanding of trace-element transfer in the chain from soil to man.