ISSN:
1573-5052
Keywords:
Block size
;
Blocked-quadrats
;
Methodology
;
Paired-quadrats
;
Plant dispersion
;
Quadrat spacing
;
Spatial pattern
;
Variances
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary For the description of patterns in data from quadrats arranged in a belt or grid, a new ‘paired-quadrat variance’ (PQV) method is introduced. This and other published methods were applied to artificial data with known patterns and to two sets of field data. Hypotheses formed by other methods about patterns shown in the field data are tested by Goodall's method involving ‘random pairing of quadrats to obtain variances’ (RPQV). The advantages of using the PQV method and Hill's new ‘two-term local quadrat variance’ (TTLQV) method over the earlier ‘blocked-quadrat variance’ (BQV) methods are discussed. It is recommended that quadrat data be divided into two subsets, and then the PQV method be applied to one and the RPQV method to the other. This new procedure for spatial pattern analysis would permit the separation of hypothesis formation (by the PQV method) from hypothesis testing (by the RPQV method), and would permit unambiguous significance tests.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00141298
Permalink
