Bird Census Techniques

Author: Colin J. Bibby
Publisher: Academic Press
ISBN: 0080984509
Size: 54.31 MB
Format: PDF, Kindle
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Bird Census Techniques from the Author: Colin J. Bibby. Wild birds are counted for a wide variety of reasons and by a bewildering array of methods. However, detailed descriptions of the techniques used and the rationale adopted are scattered in the literature, and the newcomer to bird census work or the experienced bird counter in search of a wider view, may well have difficulty in coming to grips with the subject as a whole. While not an end in itself, numerical and distributional census work is a fundamental part of many scientific and conservation studies, and one in which the application of given standards is vital if results are not to be distorted or applied in a misleading way. This book provides a concise guide to the various census techniques and to the opportunities and pitfalls which each entails. The common methods are described in detail, and illustrated through an abundance of diagrams showing examples of actual and theoretical census studies. Anyone with a bird census job to plan should be able to select the method best suited to the study at hand, and to apply it to best effect within the limits inherent in it and the constraints of the particular study. The Royal Society for the Protection of Birds and the British Trust for Ornithology have for many years pioneered the collaboration of amateurs and professionals in various census studies. Three members of their staff, each with extensive field experience, now pool the knowledge of these investigations to lay the groundwork for sound census work in future years.

Ecological Census Techniques

Author: William J. Sutherland
Publisher: Cambridge University Press
ISBN: 9780521478151
Size: 78.71 MB
Format: PDF, Kindle
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Ecological Census Techniques from the Author: William J. Sutherland. A concise guide to the techniques for estimating population numbers in plants and animals.

Bird Ecology And Conservation

Author: William J. Sutherland
Publisher: Oxford University Press
ISBN: 9780198520863
Size: 71.10 MB
Format: PDF, ePub, Docs
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Bird Ecology And Conservation from the Author: William J. Sutherland. Outlining the main methods and techniques available to ornithologists, this book brings together in one authoritative source contributions containing information on avian ecology and conservation.

Raptors

Author: Jon Hardey
Publisher: The Stationery Office
ISBN: 9780114973216
Size: 27.86 MB
Format: PDF, ePub, Mobi
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Raptors from the Author: Jon Hardey. This field guide is written for people who watch, survey or monitor birds of prey and contains detailed descriptions of survey methods for all species of raptor found regularly in Britain and Ireland. Written by a team from the Scottish Raptor Monitoring Group, this publication draws on the knowledge and experience of more than 300 raptor specialists. Chapters include the following topics: survey, surveillance and monitoring; population estimates; breeding season parameters; identification and breeding behaviours of raptors; good practice for fieldwork; and detailed species accounts. It includes a CD-ROM of raptor calls.

Practical Field Ecology

Author: C. Philip Wheater
Publisher: John Wiley & Sons
ISBN: 9780470976708
Size: 67.98 MB
Format: PDF, Docs
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Practical Field Ecology from the Author: C. Philip Wheater. This book introduces experimental design and data analysis / interpretation as well as field monitoring skills for both plants and animals. Clearly structured throughout and written in a student-friendly manner, the main emphasis of the book concentrates on the techniques required to design a field based ecological survey and shows how to execute an appropriate sampling regime. The book evaluates appropriate methods, including the problems associated with various techniques and their inherent flaws (e.g. low sample sizes, large amount of field or laboratory work, high cost etc). This provides a resource base outlining details from the planning stage, into the field, guiding through sampling and finally through organism identification in the laboratory and computer based data analysis and interpretation. The text is divided into six distinct chapters. The first chapter covers planning, including health and safety together with information on a variety of statistical techniques for examining and analysing data. Following a chapter dealing with site characterisation and general aspects of species identification, subsequent chapters describe the techniques used to survey and census particular groups of organisms. The final chapter covers interpreting and presenting data and writing up the research. The emphasis here is on appropriate wording of interpretation and structure and content of the report.

Impact Evaluation In Practice

Author: Sebastian Martinez
Publisher: World Bank Publications
ISBN: 0821385410
Size: 53.86 MB
Format: PDF, Docs
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Impact Evaluation In Practice from the Author: Sebastian Martinez. This handbook provide a non-technical introduction to impact evaluations, including ?Why Evaluate? in Chapter 1, ?How to Evaluate? in Chapter 2 and ?How to Implement Impact Evaluations? in Chapter 3. These elements are the basic ?tools? needed in order to successfully carry out an impact evaluation.

Southwestern Desert Resources

Author: William Lee Halvorson
Publisher: University of Arizona Press
ISBN: 9780816528172
Size: 47.88 MB
Format: PDF, ePub, Mobi
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Southwestern Desert Resources from the Author: William Lee Halvorson. Yet Matt Ridley does more than describe how things are getting better. He explains why. Prosperity comes from everybody working for everybody else. The habit of exchange and specialization---which started more than 100,000 years ago---has created a collective brain that sets human living standards on a rising trend. The mutual dependence, trust, and sharing that result are causes for hope, not despair. --

Natural Language Processing With Python

Author: Steven Bird
Publisher: "O'Reilly Media, Inc."
ISBN: 0596555717
Size: 34.48 MB
Format: PDF, Kindle
View: 403
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Natural Language Processing With Python from the Author: Steven Bird. This book offers a highly accessible introduction to natural language processing, the field that supports a variety of language technologies, from predictive text and email filtering to automatic summarization and translation. With it, you'll learn how to write Python programs that work with large collections of unstructured text. You'll access richly annotated datasets using a comprehensive range of linguistic data structures, and you'll understand the main algorithms for analyzing the content and structure of written communication. Packed with examples and exercises, Natural Language Processing with Python will help you: Extract information from unstructured text, either to guess the topic or identify "named entities" Analyze linguistic structure in text, including parsing and semantic analysis Access popular linguistic databases, including WordNet and treebanks Integrate techniques drawn from fields as diverse as linguistics and artificial intelligence This book will help you gain practical skills in natural language processing using the Python programming language and the Natural Language Toolkit (NLTK) open source library. If you're interested in developing web applications, analyzing multilingual news sources, or documenting endangered languages -- or if you're simply curious to have a programmer's perspective on how human language works -- you'll find Natural Language Processing with Python both fascinating and immensely useful.

Raptors

Author: Jon Hardey
Publisher: The Stationery Office
ISBN: 9780114973216
Size: 50.72 MB
Format: PDF, Mobi
View: 2719
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Raptors from the Author: Jon Hardey. This field guide is written for people who watch, survey or monitor birds of prey and contains detailed descriptions of survey methods for all species of raptor found regularly in Britain and Ireland. Written by a team from the Scottish Raptor Monitoring Group, this publication draws on the knowledge and experience of more than 300 raptor specialists. Chapters include the following topics: survey, surveillance and monitoring; population estimates; breeding season parameters; identification and breeding behaviours of raptors; good practice for fieldwork; and detailed species accounts. It includes a CD-ROM of raptor calls.

Occupancy Estimation And Modeling

Author: Darryl I. MacKenzie
Publisher: Academic Press
ISBN: 0080455042
Size: 33.26 MB
Format: PDF, Docs
View: 6011
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Occupancy Estimation And Modeling from the Author: Darryl I. MacKenzie. Occupancy Estimation and Modeling is the first book to examine the latest methods in analyzing presence/absence data surveys. Using four classes of models (single-species, single-season; single-species, multiple season; multiple-species, single-season; and multiple-species, multiple-season), the authors discuss the practical sampling situation, present a likelihood-based model enabling direct estimation of the occupancy-related parameters while allowing for imperfect detectability, and make recommendations for designing studies using these models. * Provides authoritative insights into the latest in estimation modeling * Discusses multiple models which lay the groundwork for future study designs * Addresses critical issues of imperfect detectibility and its effects on estimation * Explores the role of probability in estimating in detail