Download or read book Animal Biomarkers as Pollution Indicators written by David B. Peakall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecotoxicology is a relatively new scientific discipline. Indeed, it might be argued that it is only during the last 5-10 years that it has come to merit being regarded as a true science, rather than a collection of procedures for protecting the environment through management and monitoring of pollutant discharges into the environment. The term 'ecotoxicology' was first coined in the late sixties by Prof. Truhaut, a toxicologist who had the vision to recognize the importance of investigating the fate and effects of chemicals in ecosystems. At that time, ecotoxicology was considered a sub-discipline of medical toxicology. Subsequently, several attempts have been made to portray ecotoxicology in a more realistic light. Notably, both F. Moriarty (1988) and F. Ramade (1987) emphasized in their books the broad basis of ecotoxicology, encompassing chemical and radiation effects on all components of ecosystems. In doing so, they and others have shifted concern from direct chemical toxicity to man, to the far more subtle effects that pollutant chemicals exert on natural biota. Such effects potentially threaten the existence of all life on Earth. Although I have identified the sixties as the era when ecotoxicology was first conceived as a coherent subject area, it is important to acknowledge that studies that would now be regarded as ecotoxicological are much older. Wherever people's ingenuity has led them to change the face of nature significantly, it has not escaped them that a number of biological con sequences, often unfavourable, ensue.
Download or read book Air Quality Criteria for Nitrogen Oxides written by United States. Environmental Protection Agency. Air Pollution Control Office and published by . This book was released on 1971 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Visual System in Vertebrates written by F. Crescitelli and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vertebrate eye has been, and continues to be, an object of interest and of inquiry for biologists, physicists, chemists, psychologists, and others. Quite apart from its important role in the development of ophthalmology and related medical disciplines, the vertebrate eye is an exemplar of the ingenuity of living systems in adapting to the diverse and changing environments in which vertebrates have evolved. The wonder is not so much that the visual system, like other body systems, has been able to adapt in this way, but rather that these adaptations have taken such a variety of forms. In a previous volume in this series (VII/I) Eakin expressed admiration for the diversity of invertebrate photoreceptors. A comparable situation exists for the vertebrate eye as a whole and one object of this volume is to present to the reader the nature of this diversity. One result of this diversification of ocular structures and properties is that the experimental biologist has available a number of systems for study that are unique or especially favorable for the investigation of particular questions in visual science or neurobiology. This volume includes some examples of progress made by the use of such specially selected vertebrate systems. It is our hope that this comparative approach will continue to reveal new and useful preparations for the examination of important questions.
Download or read book The Sea Urchin Embryo written by G. Czihak and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sea urchin eggs are objects of wonder for the student who sees them for the first time under the microscope. The formation of the fertil ization membrane after insemination, the beauty of mitotic cleavage, the elegant swimming of embryos, remain an esthetic pleasure even for the eyes of seasoned investigators. But sea urchin eggs have other, more practical, advantages: they lend themselves to surgical operation without difficulty and they heal perfectly; they can be obtained in very large amounts and represent thus an extremely favorable material for biochemists and molecular embryologists. It is not surprising that, in view of these exceptional advantages, sea urchin eggs have attracted the interest of innumerable biologists since O. HERTWIG discovered the fusion of the pronuclei (amphimixy), in Paracentrotus lividus, almost a century ago. The purpose of the present book is to present, in a complete and orderly fashion, the enormous amount of information which has been gathered, in the course of a hun dred years of sea urchin embryology. JOSEPH NEEDHAM, in 1930, was still able to present all that was known, at that time, on the biochemistry of all possible species of developing eggs and embryos in his famous "Chemical Embryology" (Cambridge University Press) . It would no longer be possible for one man to write a modern version of what was a "Bible" for the young embryologists of forty years ago.
Download or read book Atrazine in North American Surface Waters written by Jeffrey M. Giddings and published by SETAC. This book was released on 2005 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Water Quality Guidelines for the Protection of Aquatic Life written by Canada. Environment Canada and published by National Guidelines and Standards Office. This book was released on 2003 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the development of Canadian water quality guidelines for the nitrate ion for the protection of aquatic life. It contains a review of technical background information on the chemical & physical properties of nitrate & nitrate salts, the nitrogen cycle, natural & anthropogenic sources, fate & behaviour of nitrate in the environment, nitrate environmental concentrations, and effects of nitrates on aquatic organisms (including fish, plants, invertebrates, and semi-aquatic mammals & birds). The final section sets out nitrate concentration guidelines to protect fresh & marine water quality and aquatic life, and provides guidance on the application of the guidelines. Appendices include tables that summarize freshwater & marine toxicity studies.
Download or read book Social Media and the 2008 U S Presidential Election written by Emily Metzgar and published by . This book was released on 2009-10 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2008 U.S. presidential campaign offered a unique opportunity to evaluate the usefulness and applicability of social media technology in the American political environment. This study's assessment of the role that social media played during the 2008 U.S. presidential campaign confirms some widely held tenets of conventional wisdom about social media, but it also indicates that the role of social media as the new sine qua non of American politics is far from certain.
Download or read book Eco evolutionary Dynamics written by Andrew P. Hendry and published by Princeton University Press. This book was released on 2020-06-09 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, scientists have realized that evolution can occur on timescales much shorter than the 'long lapse of ages' emphasized by Darwin - in fact, evolutionary change is occurring all around us all the time. This work provides an authoritative and accessible introduction to eco-evolutionary dynamics, a cutting-edge new field that seeks to unify evolution and ecology into a common conceptual framework focusing on rapid and dynamic environmental and evolutionary change.
Download or read book Developmental Biology written by Mary S. Tyler and published by Sinauer Associates, Incorporated. This book was released on 1994 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Ecotoxicology written by John E. Elliott and published by Springer Science & Business Media. This book was released on 2011-08-27 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many books have now been published in the broad field of environmental toxicology. However, to date, none of have presented the often fascinating stories of the wildlife science, and the steps along the way from discovery of problems caused by environmental pollutants to the regulatory and non-regulatory efforts to address the problems. This book provides case by case examinations of how toxic chemical effects on wildlife have brought about policy and regulatory decisions, and positive changes in environmental conditions. Wild animal stories, whether they are about the disappearance of charismatic top predators, or of grossly deformed embryos or frogs, provide powerful symbols that can and have captured the public's imagination and have resulted in increased awareness by decision makers. It is the intent of this book to present factual and balanced overviews and summaries of the science and the subsequent regulatory processes that followed to effect change (or not). We cover a variety of chemicals and topics beginning with an update of the classic California coastal DDT story of eggshell thinning and avian reproduction to more recent cases, such as the veterinarian pharmaceutical that has brought three species of Asian vultures to the brink of extinction. Researchers, regulators, educators, NGOs and the general public will find valuable insights into the processes and mechanisms involved both in environmental scientific investigation and in efforts to effect positive change.
Download or read book Herpetologia Bonnensis written by Societas Europaea Herpetologica. Ordinary general meeting and published by . This book was released on 1997 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Agricultural Index written by and published by . This book was released on 1986 with total page 2476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amphibians and Reptiles of Georgia written by John B. Jensen and published by University of Georgia Press. This book was released on 2008 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring more than 475 full-color photographs and 182 maps, this comprehensive guide to the state's diverse herpetofauna makes accessible a wealth of information about 170 species of frogs, salamanders, crocodilians, lizards, snakes, and turtles, including species attributes, behavior, life cycles, habitat, and more.
Download or read book Imms General Textbook of Entomology written by Augustus Daniel Imms and published by Springer. This book was released on 1977-11-30 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt: Band 2.
Download or read book Developmental Psychoacoustics written by Lynne A. Werner and published by Amer Psychological Assn. This book was released on 1992 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fueled by a growing interest in the perceptual development and capacities of human infants, the field of developmental psychology acoustics has expanded significantly in the past 15 years. Developmental Psycho acoustics, with chapters contributed by experts in areas of hearing, perceptual development, and psycho-physics, emphasizes the importance of understanding the sensory capacities of infants and children. It presents current research in developmental acoustics, offers interpretations for the findings, and encourages increased communication among related fields.
Download or read book Advances in Polymer Science written by and published by . This book was released on 1985 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
