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Quantifying the distribution and abundance of an animals resource using aerial photography.

Authors :
Zalucki MP
Chandica A
Kitching RL
Source :
Oecologia [Oecologia] 1981 Aug; Vol. 50 (2), pp. 176-183.
Publication Year :
1981

Abstract

Infra-red aerial photography was used on two occasions to map the abundance and dispersion of milkweeds (Asclepias spp.). The scale at which the aerial photographs could be interpreted showed that milkweeds occur in large contiguous areas or patches. These patches are abundant, the number in any size-class declining exponentially with increasing size. Analysis of the maps using various dispersion indices and spatial autocorrelation statistic showed that patches have a clumped dispersion. Large patches tend to be surrounded by smaller sized patches. The scales at which clumping occurred indicated a close association between milkweeds and the degree of disturbance of the 'natural' environment by human activities. The utility of resource mapping using aerial photography is demonstrated.

Details

Language :
English
ISSN :
1432-1939
Volume :
50
Issue :
2
Database :
MEDLINE
Journal :
Oecologia
Publication Type :
Academic Journal
Accession number :
28311084
Full Text :
https://doi.org/10.1007/BF00348034