index_sorensen {tabula} | R Documentation |
Dice-Sorensen Qualitative Index
Description
Dice-Sorensen Qualitative Index
Usage
index_sorensen(x, y, ...)
## S4 method for signature 'logical,logical'
index_sorensen(x, y)
## S4 method for signature 'numeric,numeric'
index_sorensen(x, y)
Arguments
x , y |
A |
... |
Currently not used. |
Details
Data are standardized on a presence/absence scale (0
/1
)
beforehand.
Value
A numeric
vector.
Author(s)
N. Frerebeau
References
Dice, L. R. (1945). Measures of the Amount of Ecologic Association Between Species. Ecology, 26(3): 297-302. doi:10.2307/1932409
Sorensen, T. (1948). A Method of Establishing Groups of Equal Amplitude in Plant Sociology Based on Similarity of Species Content and Its Application to Analyses of the Vegetation on Danish Commons. Kongelige Danske Videnskabernes Selskab, 5(4): 1-34.
See Also
Other beta diversity measures:
index_binomial()
,
index_brainerd()
,
index_bray()
,
index_cody()
,
index_jaccard()
,
index_morisita()
,
index_routledge
,
index_whittaker()
,
index_wilson()
[Package tabula version 3.3.1 Index]