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Author: J. Vanek
Publisher: Springer
ISBN: 9401019339
Category : Nature
Languages : en
Pages : 596
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Book Description
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: J. Vanek
Publisher: Springer
ISBN: 9401019339
Category : Nature
Languages : en
Pages : 596
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Book Description
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: Otto Graff
Publisher:
ISBN:
Category : Soil animals
Languages : en
Pages : 672
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Book Description
Author: T.R. Southwood
Publisher: Springer Science & Business Media
ISBN: 9401572917
Category : Science
Languages : en
Pages : 548
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Book Description
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: G. P. Channabasavanna
Publisher: Brill Archive
ISBN: 9789004085268
Category : Acarology
Languages : en
Pages : 548
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Book Description
Author: T. R. E. Southwood
Publisher: John Wiley & Sons
ISBN: 1444312308
Category : Science
Languages : en
Pages : 594
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Book Description
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: Peter A. Henderson
Publisher: John Wiley & Sons
ISBN: 1118895282
Category : Science
Languages : en
Pages : 668
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Book Description
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
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1732
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Book Description
Author: Peter A. Henderson
Publisher: Oxford University Press
ISBN: 0192607030
Category : Science
Languages : en
Pages : 529
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Book Description
Ecological Methods by the late T.R. E. Southwood and revised over the years by P. A. Henderson has developed into a classic reference work for the field biologist. It provides a handbook of ecological methods and analytical techniques pertinent to the study of animals, with an emphasis on non-microscopic animals in both terrestrial and aquatic environments. It remains unique in the breadth of the methods presented and in the depth of the literature cited, stretching right back to the earliest days of ecological research. The universal availability of R as an open source package has radically changed the way ecologists analyse their data. In response, Southwood's classic text has been thoroughly revised to be more relevant and useful to a new generation of ecologists, making the vast resource of R packages more readily available to the wider ecological community. By focusing on the use of R for data analysis, supported by worked examples, the book is now more accessible than previous editions to students requiring support and ideas for their projects. Southwood's Ecological Methods provides a crucial resource for both graduate students and research scientists in applied ecology, wildlife ecology, fisheries, agriculture, conservation biology, and habitat ecology. It will also be useful to the many professional ecologists, wildlife biologists, conservation biologists and practitioners requiring an authoritative overview of ecological methodology.
Author: Clive Hurford
Publisher: Springer Nature
ISBN: 3030598756
Category : Nature
Languages : en
Pages : 361
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Book Description
This edited volume documents the current nature conservation status of arable habitats in Europe. Arable farming systems have evolved in the European landscape over more than ten thousand years and now occupy nearly 30% of the European land area. They support species that have life cycles closely synchronised with traditional cereal growing, many of which have experienced massive declines throughout Europe. For example, in Britain, of the 100 plant species exhibiting the greatest declines in the latter half of the 20th century, 47 were typical of arable land. Despite this the habitat and many of the species associated with it remains unprotected across much of Europe. The 22 chapters cover a range of topics, including: · Regional accounts describing the impact of changing agricultural practices on the arable flora; · The results of research and surveillance projects on the soil organisms, bryophyte flora, invertebrate fauna and pollinators of arable habitats; · The potential for designing multifunctional and resilient agricultural landscapes; The use of ex situ conservation to aid the reintroduction of rare arable plants; · Case studies illustrating how changing agricultural practices have impacted on bird populations in Europe; · The roles of remote sensing in monitoring agricultural systems; · How agri-environment schemes can help restore the biodiversity in arable habitats; and · A look forward at ways to help ensure the future security of the species associated with arable habitats. It is clear that the biodiversity of arable land throughout Europe has undergone major changes, particularly during the second half of the 20th century, and that these changes are continuing into the 21st century. We need to develop a deeper appreciation of farmland wildlife and its integration into farming systems to ensure its future security in a world where value is increasingly expressed in terms of material profit. This book is particularly relevant to practitioners, policy-makers and managers working in the fields of nature conservation, agri-environment schemes and land management, and to researchers working in the fields of conservation biology, terrestrial ecology, nature conservation, applied ecology, biodiversity, agriculture, agricultural ethics and environmental studies.
Author: Richard Forman
Publisher: Elsevier
ISBN: 032314408X
Category : Science
Languages : en
Pages : 644
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Book Description
Pine Barrens: Ecosystem and Landscape focuses on the relationship between the ecological and landscape aspects of Pine Barrens of New Jersey. The idea in this book is based from the discussions of Rutgers University botanists and ecologists at the 1975 American Institute of Biological Science meetings, and from the interest generated by the 1976 annual New Jersey Academy of Science meeting, which focuses on the Pine Barrens. This seven-part book starts with a short discussion on location and boundaries of the New Jersey Pine Barrens. Part I covers human activities, from Indian activities and initial European perceptions of the land, including settlement, lumbering, fuel wood and charcoal, iron and glassworks, farming and livestock, and real estate development. The next part of the book describes sandy deposits, geographic distribution of geologic formations, and soil types with their ecologically important characteristics. Topics on hydrology, aquatic ecosystems, and climatic and microclimatic conditions are presented in the third part of this reference. Part IV traces the history of vegetation starting before the Ice Age and analyzes vegetation using different approaches, such as community types, community classification according to a European method, and gradient analysis. Plants of the Pine Barrens are briefly described and listed in Part V. The final part illustrates community relationships of mammals, birds, reptiles, amphibians, fish, arthropods, and soil microcommunities. The book is ideal for ecologists, botanists, geologists, soil scientists, zoologists, hydrologists, limnologists, engineers, and scientists, as well as planners, decision-makers, and managers who may largely determine the future of a region.
