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Author : James George Needham,Paul Robert Needham
Publisher : McGraw-Hill Companies
Page : 136 pages
File Size : 50,6 Mb
Release : 1962
Category : Science
ISBN : UOM:39015082553473
A KEY TO IDENTIFYING FRESH-WATER ORGANISMS IN THE FIELD AND LAB.
Author : James George Needham,Paul Robert Needham
Publisher : Unknown
Page : 96 pages
File Size : 40,6 Mb
Release : 1927
Category : Aquatic insects
ISBN : UOM:39015005838423
Author : James G Needham,Paul R Needham
Publisher : Unknown
Page : 96 pages
File Size : 48,6 Mb
Release : 2020-05-21
Category : Electronic
ISBN : 9354020712
This book has been considered by academicians and scholars of great significance and value to literature. This forms a part of the knowledge base for future generations. So that the book is never forgotten we have represented this book in a print format as the same form as it was originally first published. Hence any marks or annotations seen are left intentionally to preserve its true nature.
Author : James George Needham,Paul Robert Needham
Publisher : Unknown
Page : 104 pages
File Size : 55,6 Mb
Release : 1941
Category : Aquatic insects
ISBN : UVA:X000655252
Author : Stanley Cain
Publisher : Unknown
Page : 222 pages
File Size : 53,7 Mb
Release : 2018-05-23
Category : Science
ISBN : 1635496934
Limnology as a process refers to the study of ponds, rivers, lakes, wetlands, streams, etc. Freshwater biology is a sub-division of limnology. It is the study of freshwater ecosystems, especially their scientific and biological aspects. It studies in detail the relationship of aquatic plants and animals with their ecosystem along with species distribution. This book is a compilation of chapters that discuss the most vital aspects in the field of freshwater biology. Such selected concepts that redefine this field have been presented in it. For all those who are interested in freshwater biology, this textbook can prove to be an essential guide.
Author : James George Needham,Paul Robert Needham
Publisher : Unknown
Page : 88 pages
File Size : 46,8 Mb
Release : 1941
Category : Aquatic insects
ISBN : OCLC:1240794686
Author : Gerry Closs,Barbara Downes,Andrew Boulton
Publisher : John Wiley & Sons
Page : 240 pages
File Size : 51,9 Mb
Release : 2009-04-01
Category : Science
ISBN : 9781444311136
Freshwater ecosystems are under increasing pressure as human populations grow and the need for clean water intensifies. The demand for ecologists and environmental managers who are trained in basic freshwater ecology has never been greater. Students and practitioners new to the field of freshwater ecology and management need a text that provides them with an accessible introduction to the key questions while still providing sufficient background on basic scientific methods. Gerry Closs, Barbara Downes and Andrew Boulton have written a text that meets the requirements of these students. Following an introduction to scientific methodology and its application to the study of ecology, several key concepts in freshwater ecology are reviewed using a wide range of scientific studies into fundamental and applied ecological questions. Key ecological questions that are explored in a freshwater context include the role of animal dispersal and predators on freshwater community structure and the impact of pollutants and introduced species on freshwater ecosystems. This book represents the only freshwater ecology textbook that is specifically aimed at an introductory level. It will also be a useful primer for students who have not previously taken a specialized freshwater course but who require an accessible overview of the subject. General reviews on the methods of science, influence of scale, and the main features of freshwater systems. Coverage of several fundamental and applied ecological questions. A logical structure in each chapter that builds from a general observation of an ecological pattern, to an exploration of the various scientific approaches that can be used to investigate such patterns. Suggested further reading lists for each chapter.
Author : Robert G. Wetzel,Gene Likens
Publisher : Springer Science & Business Media
Page : 456 pages
File Size : 50,6 Mb
Release : 2000-03-03
Category : Science
ISBN : 0387989285
In this thoroughly updated third edition, the authors provide a series of carefully designed and tested field and laboratory exercises that represent the full scope of limnology. In using the text, students will gain a solid foundation in this complex, multidisciplinary field of ecology as they explore the physical, chemical, and biological characteristics of standing and running waters. The book illustrates accepted standard methods as well as modern metabolic and experimental approaches and their research applications. Each exercise is preceded by an introductory section and concludes with questions for students as well as suggestions for further reading. As a textbook, this is a highly structured, concise presentation with a research-oriented approach that openly invites active participation by students.
Author : James George Needham,Paul Robert Needham
Publisher : Unknown
Page : 0 pages
File Size : 42,8 Mb
Release : 1955
Category : Aquatic
ISBN : OCLC:270942340
Author : James G. Needham
Publisher : Forgotten Books
Page : 98 pages
File Size : 55,8 Mb
Release : 2018-09-11
Category : Science
ISBN : 1390405052
Excerpt from A Guide to the Study of Fresh-Water Biology: With Special Reference to Aquatic Insects and Other Invertebrate Animals and Phyto-Plancton The plan and purpose of this little book in this its fourth re vision are the same as in the earlier ones: to facilitate the recog nition of freshwater organisms in the field and in the laboratory. It offers for the purpose keys and tables and figures illustrating genera. Only things commonly found in fresh waters are in cluded. Inhabitants of Salt and alkaline waters and of caves are omitted. Vertebrate animals and vascular plants are also omitted because they are better known, and because aids to their recognition are commonly available. The larger inverte brates are more fully treated than are the microscopic ones. Genera and not species are illustrated; and generic names are applied in an inclusive sense to groups of species that a beginnef may be able to recognize by external differences. T 0 provide him With a tool that he can use has been out aim, and we trust that that will explain our disregard of some of the much sub divided genera of systematic specialists. The keys have been expanded to include genera whose immature aquatic stages were formerly unknown. 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.
Author : Paul R. 1902-1964 Needham,James G. 1868-1956 Needham
Publisher : Unknown
Page : 94 pages
File Size : 44,5 Mb
Release : 2015-02-15
Category : Electronic
ISBN : 1298025559
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : Paul R. Needham,James G. Needham
Publisher : Legare Street Press
Page : 0 pages
File Size : 43,6 Mb
Release : 2022-10-26
Category : History
ISBN : 1015434681
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : J. Reese Voshell
Publisher : McDonald and Woodward Publishing Company
Page : 450 pages
File Size : 44,5 Mb
Release : 2002
Category : Nature
ISBN : 0939923874
Popular interest in the observation and study of freshwater invertebrates is increasing. This book meets the needs of this growing audience of naturalists, environmentalists, anglers, teachers, students, and others by providing substantive information in easy-to-understand, non-technical language for many groups of invertebrates commonly found in the streams, lakes, ponds, and other freshwater environments of North America. Section One provides background information on the biology and ecology of freshwater organisms and environments and explains why and how invertebrates can be studied, simply and without complex equipment, in the field and the laboratory. Section Two describes nearly 100 of the most common groups of invertebrates, and for each group a whole-body colour illustration is provided along with brief text pointing out the most important features that identify members of the group. Section Three contains in-depth descriptions of the life history, behaviour, and ecology of the various invertebrate groups, and explains their important ecological contributions and relationships to humans. The Guide is broad in scope, geographically and taxonomically, and it is written at a substantive yet easily accessible level that will appeal to both novices and those with more advanced knowledge of the subject. It also contains more than 100 specially commissioned colour illustrations by the well-known scientific illustrator Amy Bartlett Wright that will greatly facilitate the easy and rapid identification of specimens.
Author : Brian R. Moss
Publisher : John Wiley & Sons
Page : 579 pages
File Size : 46,5 Mb
Release : 2009-07-15
Category : Science
ISBN : 9781444313420
This established textbook continues to provide a comprehensive andstimulating introduction to rivers, lakes and wetlands, and waswritten as the basis for a complete course on freshwater ecology.Designed for undergraduate and early postgraduate students who wishto gain an overall view of this vast subject area, this accessibleguide to freshwater ecosystems and man's activities will also beinvaluable to anyone interested in the integrated management offreshwaters. The author maintains the tradition of clarity andconciseness set by previous editions, and the text is extensivelyillustrated with photographs and diagrams. Examples are drawn fromthe author's experience in many parts of the world. In this edition, the scientific content of the text has beenfully revised and updated. Emphasis has been placed on humanimpacts, and a completely new chapter has been added on the futureof freshwaters. Balanced and stimulating introduction to limnology. Successfully combines fundamental and applied aspects ofintegrated management of freshwaters, with strong emphasis on humanlinks. Completely revised and rewritten with a threefold increase inthe number of illustrations. New chapter on the future of freshwaters. Of interest to undergraduates, beginning postgraduates and anylimnologically interested reader.
Author : James G. Needham,J. T. Lloyd
Publisher : Legare Street Press
Page : 0 pages
File Size : 45,9 Mb
Release : 2022-10-27
Category : History
ISBN : 1016780842
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
