Sentence examples for matrix of species from inspiring English sources

The two null models permute elements of the species-by-site (row × column) matrix of species occurrence (1: presence; 0: absence) under constraints of keeping the observed row sums or column sums the same as observed (Gotelli & Graves 1996).

Cluster analysis of transects based on a Bray Curtis (BC) matrix of species abundance identified one cluster of five transects and one independent transect – the deepest transect (2406 m average depth).

The resulting two datasets each comprise a matrix of species by months.

A second data matrix of species presence and absence was introduced for an a posteriori test of genuine data structure among Caribbean localities, using the Bray-Curtis resemblance measure to determine the level of similarity among localities.

PGLS converts the phylogeny into a variance-covariance matrix of species relationships, which is then used to weight the parameters of regression analysis estimated with maximum likelihood [ML, 36], [37].

The correlation coefficient for the similarity matrix of species assemblage per sample and the matrix of sample coordinates was low but significant (rho = 0.103, p < 0.01).

A multi-dimensional scaling algorithm starts with a matrix of species-species distances.

Typically such algorithms operate on matrices of species presence absence in sites, or on species-specific distributions of model predicted probabilities of occurrence in grid cells.

In this spirit, here we propose a random matrix model of evolution where selection mechanisms are encoded in interaction matrices of species, thereby extending the previous work of ours by a control parameter describing suppressors in the system.

Mass-flow networks may be exported in ASCII (plain text) format (stoichiometric matrix, names of species and reactions) as well as imported and exported in SBML format.

The distance of intrusion into the matrix of all species was positively related to understory cover.