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Anoxia
  • Language: en
  • Pages: 642

Anoxia

ANOXIA defines the lack of free molecular oxygen in an environment. In the presence of organic matter, anaerobic prokaryotes produce compounds such as free radicals, hydrogen sulfide, or methane that are typically toxic to aerobes. The concomitance of suppressed respiration and presence of toxic substances suggests these habitats are inhospitable to Eukaryota. Ecologists sometimes term such environments 'Death Zones'. This book presents, however, a collection of remarkable adaptations to anoxia, observed in Eukaryotes such as protists, animals, plants and fungi. Case studies provide evidence for controlled beneficial use of anoxia by, for example, modification of free radicals, use of alternative electron donors for anaerobic metabolic pathways, and employment of anaerobic symbionts. The complex, interwoven existence of oxic and anoxic conditions in space and time is also highlighted as is the idea that eukaryotic inhabitation of anoxic habitats was established early in Earth history.

Deep Subsurface Microbiology
  • Language: en
  • Pages: 305

Deep Subsurface Microbiology

Deep subsurface microbiology is a highly active and rapidly advancing research field at the interface of microbiology and the geosciences; it focuses on the detection, identification, quantification, cultivation and activity measurements of bacteria, archaea and eukaryotes that permeate the subsurface biosphere of deep marine sediments and the basaltic ocean and continental crust. The deep subsurface biosphere abounds with uncultured, only recently discovered and – at best - incompletely understood microbial populations. In spatial extent and volume, Earth's subsurface biosphere is only rivaled by the deep sea water column. So far, no deep subsurface sediment has been found that is entirel...

Handbook of Molecular Microbial Ecology II
  • Language: en
  • Pages: 632

Handbook of Molecular Microbial Ecology II

The premiere two-volume reference on revelations from studying complex microbial communities in many distinct habitats Metagenomics is an emerging field that has changed the way microbiologists study microorganisms. It involves the genomic analysis of microorganisms by extraction and cloning of DNA from a group of microorganisms, or the direct use of the purified DNA or RNA for sequencing, which allows scientists to bypass the usual protocol of isolating and culturing individual microbial species. This method is now used in laboratories across the globe to study microorganism diversity and for isolating novel medical and industrial compounds. Handbook of Molecular Microbial Ecology is the fi...

Recent Advances in Geomicrobiology of the Ocean Crust
  • Language: en
  • Pages: 328

Recent Advances in Geomicrobiology of the Ocean Crust

Igneous oceanic crust is one of the largest potential habitats for life on earth, and microbial activity supported by rock-water-microbe reactions in this environment can impact global biogeochemical cycles. However, our understanding of the microbiology of this system, especially the subsurface “deep biosphere” component of it, has traditionally been limited by sample availability and quality. Over the past decade, several major international programs (such as the Center for Dark Energy Biosphere Investigations, the current International Ocean Discovery Program and its predecessor Integrated Ocean Drilling Program, and the Deep Carbon Observatory) have focused on advancing our understan...

Deep Carbon
  • Language: en
  • Pages: 687

Deep Carbon

A comprehensive guide to carbon inside Earth - its quantities, movements, forms, origins, changes over time and impact on planetary processes. This title is also available as Open Access on Cambridge Core.

Scholars in COVID Times
  • Language: en
  • Pages: 297

Scholars in COVID Times

Scholars in COVID Times documents the new and innovative forms of scholarship, community collaboration, and teaching brought about by the COVID-19 pandemic. In this volume, Melissa Castillo Planas and Debra A. Castillo bring together a diverse range of texts, from research-based studies to self-reflective essays, to reexamine what it means to be a publicly engaged scholar in the era of COVID. Between social distancing, masking, and remote teaching—along with the devastating physical and emotional tolls on individuals and families—the disruption of COVID-19 in academia has given motivated scholars an opportunity (or necessitated them) to reconsider how they interact with and inspire stude...

Pandemic Pedagogies
  • Language: en
  • Pages: 228

Pandemic Pedagogies

Pandemic Pedagogies: Teaching and Learning during the COVID-19 Pandemic provides critical insights into the impact of the pandemic on the education system, pedagogical approaches, and educational inequalities. Education is often touted as the best way to promote social mobility and produce informed members of society. The pandemic has significantly threatened those goals by temporarily disrupting education and exacerbating disparities in the education system. The scholarship in this volume takes a closer look at many of the issues at the heart of the educational process including teacher self-efficacy, the gendered and racialized impacts of the pandemic on education, school closures, and institutional responses. Drawing on the expertise of scholars from around the world, the work presented here represents a remarkable diversity and quality of impassioned scholarship on the impact of COVID-19 and is a timely and critical advance in knowledge related to the pandemic.

Links Between Geological Processes, Microbial Activities & Evolution of Life
  • Language: en
  • Pages: 359

Links Between Geological Processes, Microbial Activities & Evolution of Life

Microbial systems in extreme environments and in the deep biosphere may be analogous to potential life on other planetary bodies and hence may be used to investigate the possibilities of extraterrestrial life. This book examines the mode and nature of links between geological processes and microbial activities and their significance for the origin and evolution of life on the Earth and possibly on other planets. This is a truly interdisciplinary science with societal relevance.

Polar and Alpine Microbiological and Biogeochemical Processes in the Warming World
  • Language: en
  • Pages: 181