Download or read book The Reactions of Planarians to Light written by Herbert Eugene Walter and published by . This book was released on 1907 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Researches Upon Nemerteans and Planarians written by Charles Girard and published by . This book was released on 1864 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Life History the Normal Fission and the Reproductive Organs of Planaria Maculata written by Winterton Conway Curtis and published by . This book was released on 1902 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Taxonomy and Ecology of Five Species Groups in the Family Planariidae Turbellaria Tricladida Paludicola written by Anders G. Dahm and published by . This book was released on 1958 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Biology of the Turbellaria written by E.R. Schockaert and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Third International Symposium Held in Diepenbeek, Belgium, August 11-15, 1980

Download or read book Taxonomy and ecology of five species groups in the family Planariidae written by Anders G. Dahm and published by . This book was released on 1958 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Researches Upon Nemerteans and Planarians written by Charles Girard and published by . This book was released on 1854 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Research written by and published by . This book was released on 1982 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Identification Guide of Freshwater Macroinvertebrates of Spain written by Javier Oscoz and published by Springer Science & Business Media. This book was released on 2011-06-27 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a result of the European Commission’s concern for the status of continental waters, and as a clear reflection of the notion of water as heritage to be conserved, in the year 2000 the Water Framework Directive (2000/60/CE) was enacted, its goal being to establish a framework to protect water and the different aquatic ecosystems by requiring the Member States to achieve a good ecological status in all their waters by 2015. Like all ecosystems, freshwater ecosystems undergo physical, chemical and energy-related changes, both of natural and anthropogenic origin. These disturbances affect the organisms living in them and those who utilize their resources. Therefore, evaluating these changes has become a very important task in order to better understand aquatic systems. The study and analysis of the ecological status of these ecosystems in relation to their conservation status and water quality is thus a fundamental tool for a more efficient and rational management of their resources, that is, a management that does not threaten the ecosystem. The present guide for the identification of Spanish freshwater macroinvertebrates aims to facilitate the job of those who go to great lengths to identify them in order to then determine biotic indices. It is not the aim of this book to serve as a zoological treaty, nor does it claim to add new information on the biology or the ecology of the taxa covered. This book is, simply, a working tool explicitly designed to facilitate the identification of the Spanish macroinvertebrates and the subsequent computing of biotic indices.

Download or read book Thorp and Covich s Freshwater Invertebrates written by James H. Thorp and published by Elsevier. This book was released on 2015-12-28 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thorp and Covich's Freshwater Invertebrates: Keys to Nearctic Fauna, Fourth Edition presents a comprehensive revision and expansion of this trusted professional reference manual and educational textbook—from a single North American tome into a developing multivolume series covering inland water invertebrates of the world. Readers familiar with the first three editions will welcome this new volume. The series, now entitled Thorp and Covich's Freshwater Invertebrates, (edited by J.H. Thorp), began with Volume I: Ecology and General Biology, (edited by J.H. Thorp and D.C. Rogers). It now continues in Volume II with taxonomic coverage of inland water invertebrates of the Nearctic zoogeographic region. As in previous editions, all volumes of the fourth edition are designed for multiple uses and levels of expertise by professionals in universities, government agencies, and private companies, as well as by undergraduate and graduate students. - Features zoogeographic coverage for all of North America, south to the general area of the Tropic of Cancer, and Greenland and Bermuda - Provides keys to families of freshwater insects - Provides keys to all other inland water invertebrates at the taxonomic level appropriate for the current scientific knowledge - Includes multiple taxonomic keys in each chapter that progress from higher to lower taxonomic levels, thereby allowing users to work up to their level of need and expertise - Presents additional material in each chapter on group introduction, limitations to the keys, terminology and morphology, material preparation and preservation, and references

Download or read book Taxonomy and Ecology of Five Species Groups in the Family Planariidae Turbellaria Tricladida Paludicola written by Anders Dahm (Nils Anders Gabriel.) and published by . This book was released on 1958 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alternatives in Regulated River Management written by James A. Gore and published by CRC Press. This book was released on 2018-01-18 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers and managers of regulated river systems will find this volume useful in acquiring information for deciding an integrated management plan for regulated river operations. Rather than the ecological theory of impacts of flow regulation, emphasis has been placed on methods to predict water quality and habitat alterations, as well as techniques to mitigate impacts from various operational scenarios. Although most chapters refer to impacts of riverine impoundments, these alternatives apply to any regulated situation in which changes in water quality or flow pattern occur. The predictive modeling techniques are explained primarily from a theoretical background. However, extensive bibliographies can guide the uninitiated to specific texts and software. Where controversial techniques have been presented, alternate methods are also described. Major topic areas include water quality problems, channel modification and management, ecological modeling and management, as well as a section on perspectives for ecological management and special problems in developing nations.

Download or read book Bio electric Potentials in Planaria planariidae written by Andrew W. J. Young and published by . This book was released on 1955 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interrelationships of the Platyhelminthes written by D T J Littlewood and published by CRC Press. This book was released on 2014-04-21 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interrelationships of the Platyhelminthes elucidates the role of the flatworms in the animal kingdom. It brings together results from an international group of experts, spanning many disciplines, who give evidence for the phylogeny of flatworms and constituent major taxa. A combined approach, using traditional comparative techniques along with the modern techniques of molecular phylogeny, is utilized to show that the monophyly of the phylum is not fully established, and that the phylum may in fact consist of two groups: the acoels and their relatives, which are basal metazoans, and the Rhabditophora, which is a more derived group.

Download or read book The Life History the Normal Fission and the Reproductive Organs of Planaria Maculata written by Winterton Conway Curtis and published by Forgotten Books. This book was released on 2018-03-30 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Life History, the Normal Fission and the Reproductive Organs of Planaria Maculata: A Dissertation Presented to the Board of University Studies of the Johns Hopkins University, for the Degree of Doctor of Philosophy The absence of reproductive organs during the entire year in Planaria maculata from certain localities and the appearance of these organs regularly each year in others aroused my interest and led me to seek some explanation. While accumulating data upon the presence or absence of these organs in different localities and seasons I found in the localities where reproductive organs are not developed abundant material for a study of the normal fission, and Since the normal fission of Planarians while mentioned by. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Ecology and Classification of North American Freshwater Invertebrates written by James H. Thorp and published by Academic Press. This book was released on 2010 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This text serves as an authoritative single source for a broad coverage of the anatomy, physiology, ecology, and phylogeny of all major groups of invertebrates in inland waters of North America, north of Mexico." --Book Jacket.

Download or read book Biology of the Turbellaria written by Libbie Henrietta Hyman and published by McGraw-Hill Companies. This book was released on 1974 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes a bibliography of Libbie H. Hyman: p. xv-xxv.