Niche width

Compute niche width for all the species in a community.

niche.width(mat, method = c("shannon", "levins"))

Arguments

mat	A community matrix with columns representing species, and rows representing plots.
method	Character string showing the name of the index.

Value

A vetor containing niche width for all the species in the community.

References

Zhang Jin-tun,(2004 ) Quantitative Ecology, Science Press, Beijing

Author

Jinlong Zhang jinlongzhang01@gmail.com

See also

niche.overlap for niche overlap

Examples

data(datasample)
niche.width(datasample, method = "levins")
#>   Castanopsis.eyrei Schima.superba Rhododendron.ovatum Cyclobalanopsis.glauca
#> 1          6.969601       6.476894            5.223085               3.463039
#>   Daphniphyllum.oldhamii Loropetalum.chinensis Pinus.massoniana
#> 1               4.344667              4.430471         3.460728
#>   Rhododendron.latoucheae Vaccinium.bracteatum Lithocarpus.glaber
#> 1                4.449799             3.103858            3.02749
#>   Syzygium.buxifolium Castanopsis.tibetana Castanopsis.fargesii
#> 1            2.519305             1.744575             1.948961
#>   Photinia.serrulata
#> 1           1.951351
niche.width(datasample, method = "shannon")
#>   Castanopsis.eyrei Schima.superba Rhododendron.ovatum Cyclobalanopsis.glauca
#> 1          2.003976        1.94466            1.776253               1.368882
#>   Daphniphyllum.oldhamii Loropetalum.chinensis Pinus.massoniana
#> 1               1.584789              1.649535         1.389039
#>   Rhododendron.latoucheae Vaccinium.bracteatum Lithocarpus.glaber
#> 1                 1.60508             1.233863           1.224677
#>   Syzygium.buxifolium Castanopsis.tibetana Castanopsis.fargesii
#> 1            1.007771            0.6180418            0.6799956
#>   Photinia.serrulata
#> 1          0.6806295