Vegetatio

, Volume 83, Issue 1–2, pp 209–222 | Cite as

Spatial autocorrelation and sampling design in plant ecology

  • Marie-Josée Fortin
  • Pierre Drapeau
  • Pierre Legendre
Article

Abstract

Using spatial analysis methods such as spatial autocorrelation coefficients (Moran's I and Geary's c) and kriging, we compare the capacity of different sampling designs and sample sizes to detect the spatial structure of a sugar-maple (Acer saccharum L.) tree density data set gathered from a secondary growth forest of southwestern Québec. Three different types of subsampling designs (random, systematic and systematic-cluster) with small sample sizes (50 and 64 points), obtained from this larger data set (200 points), are evaluated. The sensitivity of the spatial methods in the detection and the reconstruction of spatial patterns following the application of the various subsampling designs is discussed. We find that the type of sampling design plays an important role in the capacity of autocorrelation coefficients to detect significant spatial autocorrelation, and in the ability to accurately reconstruct spatial patterns by kriging. Sampling designs that contain varying sampling steps, like random and systematic-cluster designs, seem more capable of detecting spatial structures than a systematic design.

Keywords

Kriging Pattern analysis Reliability Sampling theory 

Abbreviations

UPGMA =

Unweighted Pair-Group Method using Arithmetic Averages

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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Marie-Josée Fortin
    • 1
  • Pierre Drapeau
    • 2
  • Pierre Legendre
    • 2
  1. 1.Department of Ecology and EvolutionState University of New YorkStony BrookUSA
  2. 2.Département de sciences biologiquesUniversité de MontréalMontréalCanada

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