Abstract
Organisms can aggregate to form patches or clusters interspersed with interstices of unoccupied space for behavioural or ecological reasons. Territorial spacing in the clusters could follow, resulting in regularity. In these circumstances an analysis of spatial pattern in a sample area defined by a boundary enclosing the clusters might reveal the aggregation but not the regularity. To demonstrate the occurrence of regularity, spacing trends and an estimate of density based on a nearest-neighbour graphical analysis can be used. The method is independent of boundaries and the presence of interstices. The basis of the method, and its strengths and limitations, are examined. A re-analysis of acorn woodpecker data, which has generated some controversy in the past, illustrates its potential for revealing “hidden” regularity.
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References
Brewer R, McCann MT (1985) Spacing in acorn woodpeckers. Ecology 66:307–308
Burgess JW (1983) Reply to a comment by R. L. Mumme et al. Ecology 64:1307–1308
Burgess JW, Roulston D, Shaw E (1982) Territorial aggregation: an ecological spacing strategy in acorn woodpeckers. Ecology 63:575–578
Campbell DJ (1983) An editor and high-resolution histogram plotter for the CBM/PET microcomputer. Behav Res Meth Instrum 15:618–619
Campbell DJ (1990) Resolution of spatial complexity in a field sample of singing crickets Teleogryllus commodus (Walker)(Gryllidae): a nearest-neighbour analysis. Anim Behav 39:1051–1057
Campbell DJ (1992) Nearest-neighbour graphical analysis of spatial pattern and a test for competition in populations of singing crickets (Teleogryllus commodus). Oecologia 92:548–551
Campbell DJ, Shipp E (1974) Spectral analysis of cyclic behaviour with examples from the field cricket Teleogryllus commodus (Walk.). Anim Behav 22:862–875
Campbell DJ, Shipp E (1979) Regulation of spatial pattern in populations of the field cricket Teleogryllus commodus (Walker). Z Tierpsychol 51:260–268
Clark PJ, Evans FC (1954) Distance to nearest neighbor as a measure of spatial relationships in populations. Ecology 35:445–453
Hodder IR, Orton CR (1976) Spatial analysis in archaeology. Cambridge University Press, Cambridge
Krebs CJ (1989) Ecological methodology. Harper and Row, New York
Mumme RL, Koenig WD, Pitelka FA (1983) Are acorn woodpecker territories aggregated? Ecology 64:1305–1307
Ripley BD (1985) Analyses of nest spacings. In Morgan BJT, North PM (eds) Statistics in ornithology. Springer, Berlin Heidelberg New York, pp 151–158
Roberts RC (1979) Habitat and resource relationships in acorn woodpeckers. Condor 81:1–8
Upton GJG, Fingleton B (1985) Spatial data analysis by example, vol 1. John Wiley, Chichester
Zar JH (1984) Biostatistical analysis, 2nd edn. Prentice-Hall, New Jersey
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Campbell, D.J. Detecting regular spacing in patchy environments and estimating its density using nearest-neighbour graphical analysis. Oecologia 102, 133–137 (1995). https://doi.org/10.1007/BF00333243
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DOI: https://doi.org/10.1007/BF00333243