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Microbial ecology is the study of interactions among microbes in natural environments and their roles in biogeochemical cycles, food web dynamics, and the evolution of life. Microbes are the most numerous organisms in the biosphere and mediate many critical reactions in elemental cycles and biogeochemical reactions. Because they are essential players in the carbon cycle and related processes, microbial ecology is a vital science for understanding the role of the biosphere in global warming and the response of natural ecosystems to climate change. This novel textbook discusses the major processes carried out by viruses, bacteria, fungi, protozoa and other protists - the microbes - in freshwater, marine, and terrestrial ecosystems. It focuses on biogeochemical processes, starting with primary production and the initial fixation of carbon into cellular biomass, before exploring how that carbon is degraded in both oxygen-rich (oxic) and oxygen-deficient (anoxic) environments. These biogeochemical processes are affected by ecological interactions, including competition for limiting nutrients, viral lysis, and predation by various protists in soils and aquatic habitats. The book neatly connects processes occurring at the micron scale to events happening at the global scale, including the carbon cycle and its connection to climate change issues. A final chapter is devoted to symbiosis and other relationships between microbes and larger organisms. Microbes have huge impacts not only on biogeochemical cycles, but also on the ecology and evolution of more complex forms of life, including Homo sapiens..

Notas de autor provistas por Syndetics

Professor Dave Kirchman is the Maxwell P. and Mildred H. Harrington Professor of Marine Studies at the University of Delaware. He obtained his Ph.D. from Harvard University in 1982 before joining the faculty at the University of Delaware in 1986. He has edited two previous books and written 160 articles in peer-reviewed journals. He was Editor of Limnology and Oceanography for 5 years, and has served on the editorial boards for another eight journals. He has several years of experience teaching microbial ecology to undergraduate and graduate students with diverse backgrounds, including chemists and engineers, with little experience in microbiology.