Download e-book for kindle: Spatial Capture-recapture by J. Andrew Royle

By J. Andrew Royle

ISBN-10: 0124059392

ISBN-13: 9780124059399

Spatial Capture-Recapture offers a finished how-to guide with targeted examples of spatial capture-recapture types according to present expertise and information. Spatial Capture-Recapture provide you with an in depth step by step research of many info units utilizing diverse software program implementations. The authors' process is useful - it embraces Bayesian and classical inference innovations to offer the reader varied suggestions to get the task performed. furthermore, Spatial Capture-Recapture presents facts units, pattern code and computing scripts in an R package.

  • Comprehensive reference on progressive new equipment in ecology makes this the 1st and in simple terms booklet at the topic
  • Every methodological point has a close labored instance with a code template, permitting you to benefit through example
  • Includes an R package deal that comprises all machine code and knowledge units on spouse website

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Sample text

That is, they provide a model in which N scales, as part of the model, with the size of the prescribed statespace. In a sense, the whole idea of SCR models is that by defining a point process and its state-space S, this gives context and meaning to N which can be estimated directly for that specific state-space. Thus, it is fixing S that resolves the problem of “unknown area” that we have previously discussed. 6 Ecological focus of SCR models Formulation of capture-recapture models conditional on the latent point process is the critical and unifying element of all SCR models.

However, a detailed description of this model and its various components is the subject of this book, and we will not pretend to condense hundreds of pages of material into the next few paragraphs. But, we give a cursory overview here to whet the appetite and provide some indication of where we are going. Don’t worry if some of this material doesn’t sink in just yet—we will walk through it slowly in the subsequent chapters. Let’s begin with the model [s] that describes the distribution of the activity centers of each animal in the spatial region S (the state-space as we called it previously).

They resolve problems which have been recognized historically and for which various ad hoc solutions have been suggested: heterogeneity in encounter probability due to the spatial organization of individuals relative to traps, the need to model trap-level effects on encounter, and that a well-defined sample area does not exist in most studies, and thus estimates of N using ordinary capture-recapture models cannot be related directly to density. As we have shown already, SCR models are not simply an extension of a technique to resolve certain technical problems.

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Spatial Capture-recapture by J. Andrew Royle

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