Download or read book Benthic Diatom Communities in Relation to Ecological Factors written by Sirje Vilbaste and published by . This book was released on 2004 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diatoms written by James C. Compton and published by Nova Science Pub Incorporated. This book was released on 2011 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diatoms are a major group of algae, and are one of the most common types of phytoplankton. Diatom communities are a popular tool for monitoring environmental conditions, past and present, and are commonly used in studies of water quality. This book presents topical research data in the study of diatoms, including the role of environmental factors in shaping diatom frustule, marine diatom communities, diatom classification methods, an analysis of the diatom flora of lakes, ponds and streams of the Kuril Islands, the ecological information of diatoms provides information on the reconstruction of palaeo-environments, and, the regulatory influences of diatoms on benthic invertebrates.
Download or read book Diversity and Ecology of Benthic Diatom Communities in Relation to Acidity Acidification and Recovery of Lakes and Rivers written by Janina Kwandrans and published by Koeltz Scientific Books. This book was released on 2007 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Diatoms written by John P. Smol and published by Cambridge University Press. This book was released on 2010-09-30 with total page 687 pages. Available in PDF, EPUB and Kindle. Book excerpt: This much revised and expanded edition provides a valuable and detailed summary of the many uses of diatoms in a wide range of applications in the environmental and earth sciences. Particular emphasis is placed on the use of diatoms in analysing ecological problems related to climate change, acidification, eutrophication, and other pollution issues. The chapters are divided into sections for easy reference, with separate sections covering indicators in different aquatic environments. A final section explores diatom use in other fields of study such as forensics, oil and gas exploration, nanotechnology, and archaeology. Sixteen new chapters have been added since the first edition, including introductory chapters on diatom biology and the numerical approaches used by diatomists. The extensive glossary has also been expanded and now includes over 1,000 detailed entries, which will help non-specialists to use the book effectively.
Download or read book Diatoms of Europe written by Kurt Krammer and published by Gantner Publishing. This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 194 photograhic Plates
Download or read book Diatom Communities As Indicators of Ecological Impairment in Rivers written by Taurai Bere and published by LAP Lambert Academic Publishing. This book was released on 2012-05 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field and laboratory studies were conducted to elucidate the confounding effects of substrate selection, eutrophication, organic pollution, ionic strength, land-use patterns, and heavy metal pollution on benthic diatom communities. Characteristics of benthic diatom communities in relation to pollution level and type were analysed through general criteria and specific criteria. Diatom communities closely reflected the pollution gradient. Diatom-based multivariate water quality assessment results based on different substrates are interchangeable. 17 diatom-based water quality indices developed in other regions proved useful in providing an indication of water quality. Hormesis was demonstrated with a Cd EC50 of 0.077 mg.L-1 being recorded. High metal accumulation capacity by periphyton was demonstrated. Pb and Cr III were shown to decrease the toxicity effects of Cd on periphyton communities. The closer the frequency and duration of the pulse is to a continuous exposure, the greater the effects of the contaminant on aquatic life. Light has a role in modulating the effects of metal toxicants on aquatic life. Diatoms are important indicators of ecological impairment.
Download or read book Ecological Strategies of Benthic Diatoms for Nutrient Competition written by Kalina M. Manoylov and published by . This book was released on 2005 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freshwater Benthic Diatoms of Central Europe written by Horst Lange-Bertalot and published by . This book was released on 2003 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Protist Diversity and Geographical Distribution written by W. Foissner and published by Springer Science & Business Media. This book was released on 2009-07-24 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation and biodiversity of protists The conservation of biodiversity is not just an issue of plants and vertebrates. It is the scarcely visible invertebrates and myriads of other microscopic organisms that are crucial to the maintenance of ecological processes on which all larger organisms and the composition of the atmosphere ultimately depend. Biodiversity and Conservation endeavours to take an holistic view of biodiversity, and when the opportunity arises to issue collections of papers dealing with too-often neglected groups of organisms. The protists, essentially eukaryotes that cannot be classi?ed in the kingdoms of animals, fungi, or plants, include some of the lea- known groups of organisms on earth. They are generally treated as a separate kingdom, commonly named Protista (or Protoctista) in textbooks, but in reality they are a mixture of organisms with disparate a?nities. Some authors have hypothesized that the numbers of protists are not especially large, and that many have extraordinarily wide distributions. However, the p- ture that unfolds from the latest studies discussed in this issue is di?erent. There are many species with wide ranges, and proportionately more cosmopolitan species than in macroorganism groups, as a result of their long evolutionary histories, but there are also de?nite patterns and geographical restrictions to be found. Further, some protists are linked to host organisms as mutualists or parasites and necessarily con?ned to the distributions of their hosts.
Download or read book Diatom Ecology written by Nora I. Maidana and published by John Wiley & Sons. This book was released on 2024-10-08 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive, unique and up-to-date exploration of diatom ecology spanning from fundamental molecular aspects to the intricate dynamics of metacommunities. In recent years there has been a considerable increase in the amount of research devoted to diatom ecology, with a wide spectrum of approaches. This large amount of information, published in many different journals and books, makes it very difficult to keep up to date, both for the trained researcher and for students. Eduardo A. Morales (d. May 2023) had the original idea to assemble chapters on various subjects within diatom ecology. The questions he posed to potential contributors framed the current book consisting of 12 chapters. Are diatoms suitable tools for ecological restoration? What would be the features that make them reliable in this context? What makes diatoms ecologically successful? In an ecological sense, why is there such variability in diatom reproductive strategies and why are they worth considering? What do new approaches in ecological synthesis provide to diatom ecology, biogeography and metacommunities? Are all diatoms widely spread and each species uniquely characterized by its own, unaltered phenotype? Can we really make any ecological consideration without knowing (with a high degree of certainty) the identity of taxa? Are urban ecosystems important repositories of biodiversity? What are the benefits and the progress in diatom ecology made by the diatom guild perspective? Why, how and when are soil diatoms used in bioindication and what are the benefits of such an approach? Are diatoms bona fide indicators of climate change? Are diatom communities in temporary rivers important for these lotic ecosystems as they are subjected to the effects of climate change? Do diatoms in peatlands behave differently from their terrestrial and aquatic (rivers, lakes, others) counterparts? Audience The book is intended primarily for professionals in the fields of diatom research, algal research (phycology), organismal, population and community ecology, limnology, microbiology, organismal biology, paleoecology and paleolimnology. The book will also serve as a reference for graduate students seeking guidance on terminology, techniques, and current methods in diatom research.
Download or read book Diatom Gliding Motility written by Stanley A. Cohn and published by John Wiley & Sons. This book was released on 2021-09-08 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: DIATOM GLIDING MOTILITY Moving photosynthetic organisms are still a great mystery for biologists and this book summarizes what is known and reports the current understanding and modeling of those complex processes. The book covers a broad range of work describing our current state of understanding on the topic, including: historic knowledge and misconceptions of motility; evolution of diatom motility; diatom ecology & physiology; cell biology and biochemistry of diatom motility, anatomy of motile diatoms; observations of diatom motile behavior; diatom competitive ability, unique forms of diatom motility as found in the genus Eunotia; and models of motility. This is the first book attempting to gather such information surrounding diatom motility into one volume focusing on this single topic. Readers will be able to gather both the current state of understanding on the potential mechanisms and ecological regulators of motility, as well as possible models and approaches used to help determine how diatoms accomplish such varied behaviors as diurnal movements, accumulation into areas of light, niche partitioning to increase species success. Given the fact that diatoms remain one of the most ecologically crucial cells in aquatic ecosystems, we hope that this volume will act as a springboard towards future research into diatom motility and even better resolution of some of the issues in motility. Audience Diatomists, phycologists, aquatic ecologists, cellular physiologists, environmental biologists, biophysicists, diatom nanotechnologists, algal ecologists, taxonomists.
Download or read book Relation of Periphyton and Benthic Invertebrate Communities to Environmental Factors and Land Use at Selected Sites in Part of the Upper Mississippi River Basin 1996 98 written by Jeremy Ryan ZumBerge and published by . This book was released on 2003 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distributional Patterns of Diatom Communities in Mediterranean Rivers written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: RESUM Aquesta tesi tracta la jerarquia i lheterogeneïtat dels sistemes fluvials que afecten lestructura de les comunitats bentòniques de diatomees. A nivell regional, es van buscar diferents grups de punts i les seves espècies indicadores, es va estudiar la resposta de les comunitats de diatomees als gradients ambientals, es va avaluar la utilitat de diferents índexs de diatomees i es va buscar el millor sistema de classificació per a condicions de referència. A nivell de conca, es volien definir els factors que determinen la distribució longitudinal de la diversitat de les comunitats de diatomees. Finalment, a nivell dhàbitat es van determinar quins factors afecten les algues i els cianobacteris a aquesta escala i es va examinar la contribució relativa de lambient i lespai en la distribució de la biomassa i composició dalgues i cianobacteris. Per tant, els diferents capítols daquesta tesi han estat desenvolupats seguint aquest esquema. ABSTRACT This thesis deals with the hierarchy and heterogeneity of stream systems affecting the structure of benthic diatom communities. At a regional level, I search for different groups of sites and their indicator taxa, I studied the responses of the diatom communities to the gradients of environmental variables, I tested the usefulness of diatom indices and I searched for the best classification system for reference conditions. At a watershed level my interest was to define the factors that determined the longitudinal distribution of diversity of diatom communities. Finally, at a habitat level it was interesting to determine the factors affecting algae and cyanobacteria at this scale and examine the relative effects of environmental factors and space on the distribution of biomass and composition of benthic algae and cyanobacteria. Thus, the different chapters of the thesis had been approached following this scheme.
Download or read book Intermittent Rivers and Ephemeral Streams written by Thibault Datry and published by Academic Press. This book was released on 2017-07-11 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermittent Rivers and Ephemeral Streams: Ecology and Management takes an internationally broad approach, seeking to compare and contrast findings across multiple continents, climates, flow regimes, and land uses to provide a complete and integrated perspective on the ecology of these ecosystems. Coupled with this, users will find a discussion of management approaches applicable in different regions that are illustrated with relevant case studies. In a readable and technically accurate style, the book utilizes logically framed chapters authored by experts in the field, allowing managers and policymakers to readily grasp ecological concepts and their application to specific situations. Provides up-to-date reviews of research findings and management strategies using international examples Explores themes and parallels across diverse sub-disciplines in ecology and water resource management utilizing a multidisciplinary and integrative approach Reveals the relevance of this scientific understanding to managers and policymakers
Download or read book Biodiversity Conservation and Ecological Function Restoration in Freshwater Ecosystems written by Min Zhang and published by Frontiers Media SA. This book was released on 2023-03-13 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of the Naviculoid Diatoms written by Per Teodor Cleve and published by . This book was released on 1894 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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
