Analysis Of Ecological Data

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Analyzing Ecological Data

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Author : Alain Zuur
language : en
Publisher: Springer
Release Date : 2007-08-29

Analyzing Ecological Data written by Alain Zuur and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-29 with Science categories.

'Which test should I apply?' During the many years of working with ecologists, biologists and other environmental scientists, this is probably the question that the authors of this book hear the most often. The answer is always the same and along the lines of 'What are your underlying questions?', 'What do you want to show?'. The answers to these questions provide the starting point for a detailed discussion on the ecological background and purpose of the study. This then gives the basis for deciding on the most appropriate analytical approach. Therefore, a better start ing point for an ecologist is to avoid the phrase 'test' and think in terms of 'analy sis'. A test refers to something simple and unified that gives a clear answer in the form of a p-value: something rarely appropriate for ecological data. In practice, one has to apply a data exploration, check assumptions, validate the models, per haps apply a series of methods, and most importantly, interpret the results in terms of the underlying ecology and the ecological questions being investigated. Ecology is a quantitative science trying to answer difficult questions about the complex world we live in. Most ecologists are aware of these complexities, but few are fully equipped with the statistical sophistication and understanding to deal with them.

Multivariate Analysis Of Ecological Data With Ade4

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Author : Jean Thioulouse
language : en
Publisher: Springer
Release Date : 2018-11-08

Multivariate Analysis Of Ecological Data With Ade4 written by Jean Thioulouse and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-08 with Medical categories.

This book introduces the ade4 package for R which provides multivariate methods for the analysis of ecological data. It is implemented around the mathematical concept of the duality diagram, and provides a unified framework for multivariate analysis. The authors offer a detailed presentation of the theoretical framework of the duality diagram and also of its application to real-world ecological problems. These two goals may seem contradictory, as they concern two separate groups of scientists, namely statisticians and ecologists. However, statistical ecology has become a scientific discipline of its own, and the good use of multivariate data analysis methods by ecologists implies a fair knowledge of the mathematical properties of these methods. The organization of the book is based on ecological questions, but these questions correspond to particular classes of data analysis methods. The first chapters present both usual and multiway data analysis methods. Further chapters are dedicated for example to the analysis of spatial data, of phylogenetic structures, and of biodiversity patterns. One chapter deals with multivariate data analysis graphs. In each chapter, the basic mathematical definitions of the methods and the outputs of the R functions available in ade4 are detailed in two different boxes. The text of the book itself can be read independently from these boxes. Thus the book offers the opportunity to find information about the ecological situation from which a question raises alongside the mathematical properties of methods that can be applied to answer this question, as well as the details of software outputs. Each example and all the graphs in this book come with executable R code.

Analysis Of Ecological Data

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Author : Wai-ting Ngai (Eric)
language : en
Publisher:
Release Date : 1991

Analysis Of Ecological Data written by Wai-ting Ngai (Eric) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Ecology categories.

Multivariate Analysis Of Ecological Data Using Canoco

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Author : Jan Leps
language : en
Publisher:
Release Date : 2003

Multivariate Analysis Of Ecological Data Using Canoco written by Jan Leps and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

Multivariate Analysis Of Ecological Data

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Author : Michael Greenacre
language : en
Publisher: Fundacion BBVA
Release Date : 2014-01-09

Multivariate Analysis Of Ecological Data written by Michael Greenacre and has been published by Fundacion BBVA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-01-09 with Ecology categories.

La diversidad biológica es fruto de la interacción entre numerosas especies, ya sean marinas, vegetales o animales, a la par que de los muchos factores limitantes que caracterizan el medio que habitan. El análisis multivariante utiliza las relaciones entre diferentes variables para ordenar los objetos de estudio según sus propiedades colectivas y luego clasificarlos; es decir, agrupar especies o ecosistemas en distintas clases compuestas cada una por entidades con propiedades parecidas. El fin último es relacionar la variabilidad biológica observada con las correspondientes características medioambientales. Multivariate Analysis of Ecological Data explica de manera completa y estructurada cómo analizar e interpretar los datos ecológicos observados sobre múltiples variables, tanto biológicos como medioambientales. Tras una introducción general a los datos ecológicos multivariantes y la metodología estadística, se abordan en capítulos específicos, métodos como aglomeración (clustering), regresión, biplots, escalado multidimensional, análisis de correspondencias (simple y canónico) y análisis log-ratio, con atención también a sus problemas de modelado y aspectos inferenciales. El libro plantea una serie de aplicaciones a datos reales derivados de investigaciones ecológicas, además de dos casos detallados que llevan al lector a apreciar los retos de análisis, interpretación y comunicación inherentes a los estudios a gran escala y los diseños complejos.

Analysis Of Ecological Data

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Author :
language : en
Publisher:
Release Date : 1991

Analysis Of Ecological Data written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.

Spatial Data Analysis In Ecology And Agriculture Using R

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Author : Richard E. Plant
language : en
Publisher: CRC Press
Release Date : 2012-03-07

Spatial Data Analysis In Ecology And Agriculture Using R written by Richard E. Plant and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-03-07 with Mathematics categories.

Assuming no prior knowledge of R, Spatial Data Analysis in Ecology and Agriculture Using R provides practical instruction on the use of the R programming language to analyze spatial data arising from research in ecology and agriculture. Written in terms of four data sets easily accessible online, this book guides the reader through the analysis of each data set, including setting research objectives, designing the sampling plan, data quality control, exploratory and confirmatory data analysis, and drawing scientific conclusions. Based on the author’s spatial data analysis course at the University of California, Davis, the book is intended for classroom use or self-study by graduate students and researchers in ecology, geography, and agricultural science with an interest in the analysis of spatial data.

Computer Analysis Of Ecological Data

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Author : Leonard A. Volland
language : en
Publisher:
Release Date : 1978

Computer Analysis Of Ecological Data written by Leonard A. Volland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Ecology categories.

Coastal Environmental And Ecological Data Analysis

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Author : Meilin Wu
language : en
Publisher: Frontiers Media SA
Release Date : 2023-04-17

Coastal Environmental And Ecological Data Analysis written by Meilin Wu and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-17 with Science categories.

The Interpretation Of Ecological Data

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Author : E. C. Pielou
language : en
Publisher: John Wiley & Sons
Release Date : 1984-09-06

The Interpretation Of Ecological Data written by E. C. Pielou and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984-09-06 with Science categories.

A detailed introduction to the methods used by ecologists--classification and ordination--to clarify and interpret large, unwieldy masses of multivariate field data. Permits ecologists to understand, not just mechanically use, pre-packaged programs for multivariate analysis. Demonstrates these techniques using artificial data simple enough for every analytical step to be understood.