betagrid: betagrid: Calculates Beta Diversity for all the Grid Cells in...

In bivariatemaps: Creates Bivariate Maps

betagrid: Calculates Beta Diversity for all the Grid Cells in Comparison with Their Nearest Neighbor Cells

Description

Uses a 'gridded' shapefile and its corresponding community data matrix to calculate beta diversity for each focal grid cell in relation to its neighbor cells (for example, 8 nearest neighbors).

Usage

betagrid(
  gridshp,
  comp,
  xfeature,
  yfeature,
  radius,
  phylotree,
  phylobeta = F,
  index = "sorensen"
)

Arguments

gridshp	Gridded Shapefile ("SpatialPolygonsDataFrame").
comp	community data matrix (species occurrence on each grid cell).
xfeature	number of the feature within the gridded shapefile corresponding to the longitude.
yfeature	number of the feature within the grid shapefile corresponding to the latitude.
radius	the radius (in degrees) that define the maximum distance to select neighbor cells (for example, use the resolution of the gridded shapefile).
phylotree	optional phylogenetic tree ("phylo" class). It can also be a "phylo" class functional dendrogram.
phylobeta	Optional boolean whether or not to calculate or not phylogenetic beta diversity (see "phylo.beta.pair" function in "betapart" package) instead of the usual beta diversity (see "beta.pair" function in "betapart" package). Default is F.
index	to calculate "sorensen" or "jaccard". Default is "sorensen".

Value

A data frame with values of mean turnover, mean nestedness, and mean beta diversity for each grid cell.

Examples

# https://rfunctions.blogspot.com/2015/08/calculating-beta-diversity-on-grid.html

bivariatemaps documentation built on Oct. 5, 2024, 1:07 a.m.