Progress In Soil Zoology
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Author | : J. Vanek |
Publisher | : Springer |
Total Pages | : 596 |
Release | : 2014-07-08 |
Genre | : Nature |
ISBN | : 9401019339 |
Ladies a n d g e n t 1 e m e n , I have the pleasure to welcome you here in Prague in the name of the Czechoslovak Academy of Sciences and to open the Fifth Inter national Colloquium on Soil Zoology. We are very glad that Czecho slovakia was chosen for this important meeting. It is clear to all of us that the soil plays and will play a de cisive part in providing food for the explosive increase of human pop ulation. For this reason we watch with great anxiety the negative influence of human activities on the environment accompanied also by the other destructive intervention into the soil ecosystem, its devas tation by inefficient management, application of herbicides and pesti cides pollution by the waste products of industry and human settlements. The basis for solving these accumulating and now sometimes latent prob lems is among others a good knowledge of the role of soil organisms in the cycles of materials and in the energy flow. Soil zoology as a part of soil biology is still at the beginning of this trend The lack of in formation about life in soil is obvious when compared with the results of a related biological science dealing with the water ecosystem.
Author | : Paul W. Murphy |
Publisher | : |
Total Pages | : 416 |
Release | : 1962 |
Genre | : Soil animals |
ISBN | : |
Methods of sampling and analysis - statistical aspects; Extraction processes and accessory techniques; Site characteristics with particular reference to pedological aspects.
Author | : G. P. Channabasavanna |
Publisher | : Brill Archive |
Total Pages | : 548 |
Release | : 1989 |
Genre | : Acarology |
ISBN | : 9789004085268 |
Author | : |
Publisher | : |
Total Pages | : 1732 |
Release | : 1976 |
Genre | : Agriculture |
ISBN | : |
Author | : T. R. E. Southwood |
Publisher | : John Wiley & Sons |
Total Pages | : 594 |
Release | : 2009-04-13 |
Genre | : Science |
ISBN | : 1444312308 |
This classic text, whose First Edition one reviewer referred to as"the ecologists' bible," has been substantially revised andrewritten. Not only have the advances made in the field since theSecond Edition been taken into account, but the scope has beenexplicitly extended to all macroscopic animals, with particularattention being paid to fish as well as other vertebrates. Ecological Methods provides a unique synthesis of themethods and techniques available for the study of populations andecosystems. Techniques used to obtain both absolute and relativepopulation estimates are described, and approaches to the directmeasurement of births, deaths, migration and the construction andinterpretation of life tables are reviewed. The text is extensively illustrated, clearly describing a widerange of equipment and methods of analysis. Comprehensive andup-to-date bibliographies to each chapter fully cover the relevantliterature, and references are given to available computer programsand internet addresses. The book has an active web site providingadditional illustrations, details of equipment and programs, andreferences to work published since the revision was completed. Likethe earlier editions, this book will be an indispensable source ofreference to researchers and students at all levels in the fieldsof ecology, entomology and zoology. Completely revised and rewritten edition of a classic. Scope extended to all macroscopic animals, notably fish andother vertebrates. Active web site displaying additional material. References to computer programmes and internet addressesthroughout the text. Affordable paperback.
Author | : T.R. Southwood |
Publisher | : Springer Science & Business Media |
Total Pages | : 548 |
Release | : 2013-06-29 |
Genre | : Science |
ISBN | : 9401572917 |
The virtual impossibility of extracting the many different species from a habitat with equal efficiency by a single method (e.g. Nef, 1960). 1.1 Population estimates Population estimates can be classified into a number of different types; the most convenient classification is that adopted by Morris (1955), although he used the terms somewhat differently in a later paper (1960). 1.1.1 Absolute and related estimates The animal numbers may be expressed as a density per unit area of the ground of the habitat. Such estimates are given by nearest neighbour and related techniques (Chapter 2), marking and recapture (Chapter 3), by sampling a known fraction of the habitat (Chapter 4-6) and by removal sampling and random walk techniques (Chapter 7). Absolute population The number of animals per unit area (e.g. hectare, acre). It is almost impossible to construct a budget or to study mortality factors without the conversion of population estimates to absolute figures, for not only do insects often move from the plant to the soil at different developmental stages, but the amount of plant material is itself always changing. The importance of obtaining absolute estimates cannot be overemphasized.
Author | : M. Kogan |
Publisher | : Springer Science & Business Media |
Total Pages | : 597 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 1461299985 |
Insects as a group occupy a middle ground in the biosphere between bacteria and viruses at one extreme, amphibians and mammals at the other. The size and gen eral nature of insects present special problems to the student of entomology. For example, many commercially available instruments are geared to measure in grams, while the forces commonly encountered in studying insects are in the mil ligram range. Therefore, techniques developed in the study of insects or in those fields concerned with the control of insect pests are often unique. Methods for measuring things are common to all sciences. Advances sometimes depend more on how something was done than on what was measured; indeed a given field often progresses from one technique to another as new methods are discovered, developed, and modified. Just as often, some of these techniques fmd their way into the classroom when the problems involved have been suffici ently ironed out to permit students to master the manipulations in a few labo ratory periods. Many specialized techniques are confined to one specific research laboratory. Although methods may be considered commonplace where they are used, in another context even the simplest procedures may save considerable time. It is the purpose of this series (1) to report new developments in methodology, (2) to reveal sources of groups who have dealt with and solved particular entomological problems, and (3) to describe experiments which might be applicable for use in biology laboratory courses.
Author | : |
Publisher | : |
Total Pages | : 430 |
Release | : 1976 |
Genre | : Agriculture |
ISBN | : |
Author | : Peter J. Bottomley |
Publisher | : John Wiley & Sons |
Total Pages | : 1152 |
Release | : 2020-01-22 |
Genre | : Technology & Engineering |
ISBN | : 089118810X |
One of the primary references on analytical methods in soil science, Part 2 of the Methods series will be useful to all biogeoscientists, especially those with an interest in microbiology or bioremediation.
Author | : Peter A. Henderson |
Publisher | : John Wiley & Sons |
Total Pages | : 656 |
Release | : 2016-02-03 |
Genre | : Science |
ISBN | : 1118895266 |
4th edition of this classic Ecology text Computational methods have largely been replaced by descriptions of the available software Includes procedure information for R software and other freely available software systems Now includes web references for equipment, software and detailed methodologies