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This textbook provides a unique and thorough look at the application of chemical biomarkers to aquatic ecosystems. Defining a chemical biomarker as a compound that can be linked to particular sources of organic matter identified in the sediment record, the book indicates that the application of these biomarkers for an understanding of aquatic ecosystems consists of a biogeochemical approach that has been quite successful but underused. This book offers a wide-ranging guide to the broad diversity of these chemical biomarkers, is the first to be structured around the compounds themselves, and examines them in a connected and comprehensive way. This timely book is appropriate for advanced undergraduate and graduate students seeking training in this area; researchers in biochemistry, organic geochemistry, and biogeochemistry; researchers working on aspects of organic cycling in aquatic ecosystems; and paleoceanographers, petroleum geologists, and ecologists. Provides a guide to the broad diversity of chemical biomarkers in aquatic environments The first textbook to be structured around the compounds themselves Describes the structure, biochemical synthesis, analysis, and reactivity of each class of biomarkers Offers a selection of relevant applications to aquatic systems, including lakes, rivers, estuaries, oceans, and paleoenvironments Demonstrates the utility of using organic molecules as tracers of processes occurring in aquatic ecosystems, both modern and ancient

Biochemical markers. --- Aquatic ecology. --- Biologic markers --- Biological markers --- Biomarkers --- Markers, Biochemical --- Biochemistry --- Indicators (Biology) --- Aquatic biology --- Ecology --- CHEMical TAXonomy. --- algal biomarkers. --- aliphatic hydrocarbons. --- alkenones. --- amino acids. --- anthropogenic compounds. --- anthropogenic markers. --- aquatic ecosystems. --- aquatic systems. --- biogeochemistry. --- biological hydrocarbons. --- biomarkers. --- biomass synthesis. --- biomass. --- biosynthesis. --- biosynthetic pathways. --- carbohydrates. --- carotenoids. --- cellular structure. --- chain length. --- chemical biomarker. --- chemical biomarkers. --- chlorophylls. --- compound-specific isotope analysis. --- cutins. --- cyclic alcohols. --- cyclic isoprenoids. --- decomposition. --- disaccharides. --- fatty acids. --- fractionation. --- gas chromatography-mass spectrometry. --- geothermometry. --- global biogeochemical cycling. --- high-performance liquid chromatography. --- isoprenoid hydrocarbons. --- isoprenoids. --- lignin. --- lipids. --- long-chain ketones. --- macromolecular heteropolymers. --- marine organisms. --- metabolic pathways. --- metabolism. --- microbial heterotrophic processes. --- microorganisms. --- molecular ecology. --- monosaccharides. --- natural ecosystems. --- nuclear magnetic resonance spectroscopy. --- nucleic acids. --- oligosaccharides. --- organic contaminants. --- organic geochemistry. --- organic matter. --- paleoclimatology. --- particular organic carbon. --- particulate organic matter. --- particulate organic nitrogen. --- peptides. --- petroleum hydrocarbons. --- photosynthesis. --- photosynthetic pigments. --- photosynthetically active radiation. --- phycobilins. --- physiochemical gradients. --- polar lipids. --- polycyclic aromatic hydrocarbons. --- polysaccharides. --- polyunsaturated fatty acids. --- protein synthesis. --- proteins. --- prymnesiophyte algae. --- saturated fatty acids. --- stable isotopes. --- sterols. --- subserins. --- trophic effects. --- vascular plants.

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This volume provides a state-of-the-art summary of biogeochemical dynamics at major river-coastal interfaces for advanced students and researchers. River systems play an important role (via the carbon cycle) in the natural self-regulation of Earth's surface conditions by serving as a major sink for anthropogenic CO2. Approximately 90 percent of global carbon burial occurs in ocean margins, with the majority of this thought to be buried in large delta-front estuaries (LDEs). This book provides information on how humans have altered carbon cycling, sediment dynamics, CO2 budgets, wetland dynamics, and nutrients and trace element cycling at the land-margin interface. Many of the globally important LDEs are discussed across a range of latitudes, elevation and climate in the drainage basin, coastal oceanographic setting, and nature and degree of human alteration. It is this breadth of examination that provides the reader with a comprehensive understanding of the overarching controls on major river biogeochemistry.

Biogeochemical cycles. --- Estuarine ecology. --- Cycles biogéochimiques --- Écologie des estuaires --- Estuaries --- Brackish water ecology --- Biogeochemistry --- Cycles --- Ecology

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The goal of this research topic was to motivate innovative research that blurs traditional disciplinary and geographical boundaries. As the scientific community continues to gain momentum and knowledge about how the natural world functions, it is increasingly important that we recognize the interconnected nature of earth systems and embrace the complexities of ecosystem transitions. We are pleased to present this body of work, which embodies the spirit of research spanning across the terrestrial-aquatic continuum, from mountains to the sea. Sincerely, The Editors

atmosphere --- dynamics --- ecosystem --- interface --- Carbon --- estuarine --- organic matterriver --- marine --- transition

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Carbon ---  organic matter ---  river ---  estuarine ---  marine ---  atmosphere ---  dynamics ---  ecosystem ---  interface ---  transition

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Science: general issues --- Oceanography (seas) --- Carbon ---  organic matter ---  river ---  estuarine ---  marine ---  atmosphere ---  dynamics ---  ecosystem ---  interface ---  transition