Download or read book Effects of Algae on Microbial Carbon Cycling in Freshwaters written by Jenny Fabian and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial processing of organic matter (OM) in the freshwater biosphere is a key component of global biogeochemical cycles. Freshwaters receive and process valuable amounts of leaf OM from their terrestrial landscape. These terrestrial subsidies provide an essential source of energy and nutrients to the aquatic environment as a function of heterotrophic processing by fungi and bacteria. Particularly in freshwaters with low in-situ primary production from algae (microalgae, cyanobacteria), microbial turnover of leaf OM significantly contributes to the productivity and functioning of freshwater ecosystems and not least their contribution to global carbon cycling. Based on differences in their chemical composition, it is believed that leaf OM is less bioavailable to microbial heterotrophs than OM photosynthetically produced by algae. Especially particulate leaf OM, consisting predominantly of structurally complex and aromatic polymers, is assumed highly resistant to enzymatic breakdown by microbial heterotrophs. However, recent research has demonstrated that OM produced by algae promotes the heterotrophic breakdown of leaf OM in aquatic ecosystems, with profound consequences for the metabolism of leaf carbon (C) within microbial food webs. [...].
Download or read book The Effects of Light Level and Temperature on Freshwater Microbial Biomass Production Enzyme Activity and Community Composition written by Joel Bonney and published by . This book was released on 2020 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algae can stimulate the production of heterotrophic microbes in periphyton communities, but the synergistic effects of light and temperature on this phenomenon are not well understood and have implications on carbon cycling and energy flow. We employed recirculating mesocosms held at different temperatures and light levels and filled with Typha litter and attached microbes to assess these effects. Heterotrophic microbial production was greater in the presence of light, as were some periphytic enzyme activities. Few response variables increased in a near-linear fashion with ascending temperature, suggesting different temperature optima. The strength of heterotrophic microbial production responses to algal photosynthesis did not vary with respect to temperature, but some enzyme activities did. The magnitude of light stimulation of bacterial production and several enzymatic activities were positively correlated, suggesting a similar driving mechanism. These findings advance our limited understanding of the synergistic effects of light and temperature on microbial communities..
Download or read book Freshwater Microbiology written by David C. Sigee and published by John Wiley & Sons. This book was released on 2005-09-27 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique textbook takes a broad look at the rapidly expanding field of freshwater microbiology. Concentrating on the interactions between viruses, bacteria, algae, fungi and micro-invertebrates, the book gives a wide biological appeal. Alongside conventional aspects such as phytoplankton characterisation, seasonal changes and nutrient cycles, the title focuses on the dynamic and applied aspects that are not covered within the current textbooks in the field. Complete coverage of all fresh water biota from viruses to invertebrates Unique focus on microbial interactions including coverage of biofilms, important communities on all exposed rivers and lakes. New information on molecular and microscopical techniques including a study of gene exchange between bacteria in the freshwater environment. Unique emphasis on the applied aspects of freshwater microbiology with particular emphasis on biodegradation and the causes and remediation of eutrophication and algal blooms.
Download or read book Freshwater Microbiology written by Sincere Humphrey and published by Scientific e-Resources. This book was released on 2019-02-19 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the diversity, interactions and activities of microbes within freshwater environments. These form an important part of the biosphere, which also includes oceans, terrestrial environments and the earth's atmosphere. Freshwater environments are considered to include all those sites where freshwater occurs as the main external medium, either in the liquid or frozen state. Water microorganisms are capable of flourishing in all water habitants, from several kilometers below the seafloor to the first millimeter of a shallow trench created by rainwater and into acidic lakes. Three major domains compose water microorganisms-Eukaryota, Archaea and Bacteria - as well as viruses. Their omnipresence impacts the entire biosphere as they are the main producers of energy and carbon flow to other organisms. Some of the microbes decompose organic matter and thus they recycle nutrients in complex manner involved in various geochemical cycles as the nitrogen, the phosphorus and the carbon cycle. Water microbiology is concerned with the microorganisms that live in water, or can be transported from one habitat to another by water. Water can support the growth of many types of microorganisms. This can be advantageous. For example, the chemical activities of certain strains of yeasts provide us with beer and bread. As well, the growth of some bacteria in contaminated water can help digest the poisons from the water. This book will be useful to researchers, teachers and students of microbiology, botany, zoology and agriculture.
Download or read book Lead Mercury Cadmium and Arsenic in the Environment written by Thomas C. Hutchinson and published by . This book was released on 1987-05-08 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented by noted researchers consider the occurrence, flux, compartmentalization, and residence times of four elements recognized as significant environmental pollutants. Examines data available on these pollutants and pinpoints areas in which further research is needed. The presence of these elements in all ecological environments--oceans, freshwater systems, soils, the atmosphere, etc.--and their regional occurrence around the globe are examined in detail, as are their sources and effects on plants, animals, and humans. Particular attention is paid to lead, which is the most prevalent pollutant and poses the greatest risk to human health, especially the health of children.
Download or read book Algal Ecology written by and published by Academic Press. This book was released on 1996-06-03 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algae are an important component of aquatic benthic ecosystems because they reflect the health of their environment through their density, abundance, and diversity. This comprehensive and authoritative text is divided into three sections to offer complete coverage of the discussion in this field. The first section introduces the locations of benthic algae in different ecosystems, like streams, large rivers, lakes, and other aquatic habitats. The second section is devoted to the various factors, both biotic and abiotic, that affect benthic freshwater algae. The final section of the book focuses on the role played by algae in a variety of complex freshwater ecosystems. As concern over environmental health escalates, the keystone and pivotal role played by algae is becoming more apparent. This volume in the Aquatic Ecology Series represents an important compilation of the latest research on the crucial niche occupied by algae in aquatic ecosystems. Presents algae as the important player in relation to environmental health Prepared by leading authorities in the field Includes comprehensive treatment of the functions of benthic algae as well as the factors that affect these important aquatic organisms Acts as an important reference for anyone interested in understanding and managing freshwater ecosystems
Download or read book Climate Change and Microbes written by Javid A. Parray and published by CRC Press. This book was released on 2022-05-18 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an enlightening picture of the role of microbes for sustaining life systems and how climatic factors will change the course of the processes. Climate Change and Microbes: Impacts and Vulnerability explores the little-addressed issue of the effects of climate change on microbial ecosystems and the influence of climate change on microbiome diversity across various habitats and regions. Recent years have seen the evidence that microbial communities are neither immune to disruption nor do they have the capacity to recover completely after a stressful climate event. This volume documents the important role of microorganisms as climate engineers and considers mitigation and adaptation strategies as well. It goes on to present the research that addresses a diverse array of topics on the impact of climate change on plant-microbe interactions and microbial aquatic life and change-induced aggravations in microbial populations and processes. The book also addresses microbial foodborne diseases resulting from challenging climates. Other topics include algae as indicators of climate change and strategies for facilitating sustainable agro-ecosystems. This book will be immensely helpful in the study of plant microbiology, agricultural sciences, biotechnology, climate science, and environmental microbiology. It will also be applicable to the field of microbial biotechnology, agricultural, and other life and environmental sciences.
Download or read book The Structuring Role of Submerged Macrophytes in Lakes written by Erik Jeppesen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid growth of the discipline of aquatic ecology has been driven both by scientific interest in the complexities of aquatic ecosystems and by their enormous environmental importance and sensitivity. This book focuses on the remarkably diverse roles played by underwater plants, and is divided into three parts: 10 thematic chapters, followed by 18 case studies, and rounded off by three integrative chapters. The topics range from macrophytes as fish food to macrophytes as mollusc and microbe habitat, making this of interest to aquatic ecologists as well as limnologists, ecosystem ecologists, microbial ecologists, fish biologists, and environmental managers.
Download or read book A New Paradigm for Environmental Chemistry and Toxicology written by Guibin Jiang and published by Springer. This book was released on 2019-08-09 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive coverage of the theoretical developments and technological breakthroughs that have deepened our understanding of environmental pollution and human health, while also promoting a comprehensive strategy to address these problems. The respective chapters highlight groundbreaking concepts fueling the development of environmental chemistry and toxicology; revolutionary analytical and computational approaches providing novel insights into environmental health; and nature-inspired, innovative engineering solutions for tackling complex hazardous exposures. The book also features a forward-looking perspective on emerging environmental issues that call for new research and regulatory paradigms, laying the groundwork for future advances in the broad field of environmental chemistry and toxicology. Written by respected authorities in the field, A New Paradigm for Environmental Chemistry and Toxicology - From Concepts to Insights will offer an invaluable reference guide for concerned researchers and professional practitioners for years to come.
Download or read book Algae Abstracts written by Office of Water Resources Research Staff and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aigae Abstracts is the first in aseries of bibliographies on water re sources and pollution published by IFI/Plenum Data Corporation in cooperation with the Water Resources Scientific Information Center (WRSIC). It is produced wholly from the information base compris ing material abstracted and indexed for Selected Water Resources Abstracts. The bibliography is divided into volumes according to the publication dates of the source documents. Volume 1 contains 569 abstracts cov ering publication dates up to and including 1969; Volume 2 contains 730 abstracts covering the years 1970 to 1972. The material included in this bibliography represents computer selections based on the presence of a form of the word "alga" somewhere in the referenced citation. Substantively, the material typifies WRSIC's "centers of com petence" approach to information support of the Office of Water Re sources Research (OWRR) of the Department of the Interior. Most of the references in this bibliography are the work of the center of competence on eutrophication at the University of Wisconsin. The indexes refer to the WRSIC accession number, which follows each abstract. The Significant Descriptor Index is made up of a fraction of the total descriptors and identifiers by which each paper has been indexed. It represents weighted terms that best describe the informa tion content; this status is indicated by the asterisks which precede them. The General Index includes all the remaining descriptors and identifiers by which each paper in this bibliography has been indexed.
Download or read book Freshwater Microbiology written by Suhaib A. Bandh and published by Academic Press. This book was released on 2019-08-01 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater Microbiology: Perspectives of Bacterial Dynamics in Lake Ecosystems provides a comprehensive and systematic analysis of microbial ecology in lakes. It offers basic information on how well the bacterial community composition varies along the spatio-temporal and trophic gradients along with the evaluation of the bioindicator species of bacteria so as to act as a key to predict the trophic status of lake ecosystems. The book helps to identify the factors of potential importance in structuring the bacterial communities in lakes as it delves into the dynamics and diversity of bacterial community composition in relation to various water quality parameters. It helps to identify the possibility of bioremediation plans and devising future policy decisions, with better conservation and management practices. Provides a comprehensive and systematic analysis of microbial ecology Helps to identify the factors of potential importance in structuring the bacterial community composition Gives insight into the bacterial diversity of freshwater lake ecosystems along with their industrial potential Caters to the needs and aspirations of students and professional researchers
Download or read book Algae and Element Cycling in Wetlands written by Jan Vymazal and published by CRC Press. This book was released on 1995 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive survey of element requirements and cycling in algae, as well as in-depth information on element cycling in wetlands and the environment. Wetland classification, hydrology, soils, vegetation, and productivity are also presented. Additional topics covered include essentiality and toxicity of elements for plants; uptake, assimilation, and storage of micronutrients; uptake and accumulation of heavy metals; primary productivity, growth rates, and limitation in algae as well as eutrophication. Packed with figures, tables, and references, the book is valuable to students and researchers in wetlands science, phycology, and ecology, as well as to environmental managers and consultants.
Download or read book Riverine Ecosystem Management written by Stefan Schmutz and published by Springer. This book was released on 2018-05-08 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book surveys the frontier of scientific river research and provides examples to guide management towards a sustainable future of riverine ecosystems. Principal structures and functions of the biogeosphere of rivers are explained; key threats are identified, and effective solutions for restoration and mitigation are provided. Rivers are among the most threatened ecosystems of the world. They increasingly suffer from pollution, water abstraction, river channelisation and damming. Fundamental knowledge of ecosystem structure and function is necessary to understand how human acitivities interfere with natural processes and which interventions are feasible to rectify this. Modern water legislation strives for sustainable water resource management and protection of important habitats and species. However, decision makers would benefit from more profound understanding of ecosystem degradation processes and of innovative methodologies and tools for efficient mitigation and restoration. The book provides best-practice examples of sustainable river management from on-site studies, European-wide analyses and case studies from other parts of the world. This book will be of interest to researchers in the field of aquatic ecology, river system functioning, conservation and restoration, to postgraduate students, to institutions involved in water management, and to water related industries.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ocean Acidification written by National Research Council and published by National Academies Press. This book was released on 2010-09-14 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ocean has absorbed a significant portion of all human-made carbon dioxide emissions. This benefits human society by moderating the rate of climate change, but also causes unprecedented changes to ocean chemistry. Carbon dioxide taken up by the ocean decreases the pH of the water and leads to a suite of chemical changes collectively known as ocean acidification. The long term consequences of ocean acidification are not known, but are expected to result in changes to many ecosystems and the services they provide to society. Ocean Acidification: A National Strategy to Meet the Challenges of a Changing Ocean reviews the current state of knowledge, explores gaps in understanding, and identifies several key findings. Like climate change, ocean acidification is a growing global problem that will intensify with continued CO2 emissions and has the potential to change marine ecosystems and affect benefits to society. The federal government has taken positive initial steps by developing a national ocean acidification program, but more information is needed to fully understand and address the threat that ocean acidification may pose to marine ecosystems and the services they provide. In addition, a global observation network of chemical and biological sensors is needed to monitor changes in ocean conditions attributable to acidification.
Download or read book Periphyton written by Yonghong Wu and published by Elsevier. This book was released on 2016-08-29 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Periphyton: Functions and Application in Environmental Remediation presents a systematic overview of a wide variety of periphyton functions and applications in environmental remediation, providing readers with an understanding of the biological/ecological features of periphyton, the methodology of their study, and their application in environmental conservation. With increases in environmental stress, anthropogenic impacts, and the global decline in biodiversity, there is a pressing need for methods to assess and improve environmental quality that are rapid, reliable, and cost-effective. Periphyton is an important component of benthic communities and plays a crucial role in the functioning of microbial food webs. Because of a number of advantages, such as a short lifecycle, relative immobility, more rapid responses to environmental stress and anthropogenic impact than any metazoa, ease of sampling, availability of taxonomic/molecular identification, and standardized methodologies for temporal/spatial comparisons, there has, in recent decades, been an increased interest in periphyton as a tool in biological conservation in aquatic ecosystems. Presents case studies that help readers implement similar ecological designs Focuses on the function of periphyton in remediating destructed ecosystems Provides readers with an understanding of periphyton in practice, especially the value of periphyton in enhancing environmental and ecosystem qualities Discusses the role of periphyton in purifying water and its effect on abiotic elements
Download or read book Carbon dynamics in freshwater coastal and oceanic ecosystems in response to the SDG goals written by Jeng-Wei Tsai and published by Frontiers Media SA. This book was released on 2023-06-23 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
