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首页> 外文期刊>Conservation Biology >Importance of Accounting for Detection Heterogeneity When Estimating Abundance: the Case of French Wolves
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Importance of Accounting for Detection Heterogeneity When Estimating Abundance: the Case of French Wolves

机译:估算丰度时检测异质性会计处理的重要性:以法国狼为例

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摘要

Abstract: Assessing conservation strategies requires reliable estimates of abundance. Because detecting all individuals is most often impossible in free-ranging populations, estimation procedures have to account for a <1 detection probability. Capture–recapture methods allow biologists to cope with this issue of detectability. Nevertheless, capture–recapture models for open populations are built on the assumption that all individuals share the same detection probability, although detection heterogeneity among individuals has led to underestimating abundance of closed populations. We developed multievent capture–recapture models for an open population and proposed an associated estimator of population size that both account for individual detection heterogeneity (IDH). We considered a two-class mixture model with weakly and highly detectable individuals to account for IDH. In a noninvasive capture–recapture study of wolves we based on genotypes identified in feces and hairs, we found a large underestimation of population size (27% on average) occurred when IDH was ignored.
机译:摘要:评估保护策略需要可靠的丰度估算。由于在自由散居的人群中检测所有个体通常是不可能的,因此估算程序必须考虑小于1的检测概率。捕获-重新捕获方法使生物学家可以解决这个可检测性问题。然而,尽管个体之间的检测异质性导致低估了封闭种群的数量,但开放种群的捕获-捕获模型是基于所有个体都具有相同检测概率的假设而建立的。我们为一个开放的种群开发了多事件捕获-捕获模型,并提出了一个相关的种群大小估计量,这两个因素都考虑了个体检测异质性(IDH)。我们考虑了两类混合模型,其中弱势和高度可检测的个体用于解释IDH。在一项基于在粪便和毛发中鉴定出的基因型的狼的无创捕获-捕获研究中,我们发现,忽略IDH时会大大低估种群数量(平均27%)。

著录项

  • 来源
    《Conservation Biology》 |2010年第2期|p.621-626|共6页
  • 作者单位

    Centre d’Ecologie Fonctionnelle et Evolutive, UMR 5175, Campus CNRS, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France|Institut de Mathématiques et Modélisation de Montpellier, UMR 5149, place E. Bataillon, F-34095 Montpellier Cedex 5, France;

    Centre d’Ecologie Fonctionnelle et Evolutive, UMR 5175, Campus CNRS, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France;

    Centre d’Ecologie Fonctionnelle et Evolutive, UMR 5175, Campus CNRS, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France;

    Office National de la Chasse et de la Faune Sauvage, CNERA Prédateurs et Animaux déprédateurs, Parc Micropolis, F-05000 Gap, France;

    Université de Lyon, F-69000, Lyon, Université Lyon 1, Centre National de la Recherche Scientifique, UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, F-69622, Villeurbanne, France;

    Centre d’Ecologie Fonctionnelle et Evolutive, UMR 5175, Campus CNRS, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France;

    Office National de la Chasse et de la Faune Sauvage, ZI Mayencin, 5 Allée de Béthléem, F-38610 Gières, France;

    Laboratoire d’Ecologie Alpine, UMR CNRS 5553, Université J. Fourier, BP 53, F-38041 Grenoble Cedex 9, France;

    Centre d’Ecologie Fonctionnelle et Evolutive, UMR 5175, Campus CNRS, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France;

    Laboratoire d’Ecologie Alpine, UMR CNRS 5553, Université J. Fourier, BP 53, F-38041 Grenoble Cedex 9, France;

    Laboratoire d’Ecologie Alpine, UMR CNRS 5553, Université J. Fourier, BP 53, F-38041 Grenoble Cedex 9, France;

    Centre d’Ecologie Fonctionnelle et Evolutive, UMR 5175, Campus CNRS, 1919 Route de Mende, F-34293 Montpellier Cedex 5, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Canis lupus; E-SURGE; individual heterogeneity; mark-recapture; mixture models; multievent model; population sizecanis lupus; E-SURGE; heterogeneidad individual; marca-recaptura; modelos mezclados; modelo multievento; tamaño poblacional;

    机译:犬狼疮;E-SURGE;个体异质性;标记夺回;混合模型;多事件模型;种群大小犬狼疮;E-SURGE;个体异质性;标记夺回;混合模型;多事件模型;种群大小;

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