Probabilistic approaches for investigating species co-occurrence from presence-absence maps.

ABSTRACT:

Background

In this research, we propose probabilistic approaches to identify pairwise patterns of species co-occurrence by using presence-absence maps only. In particular, the two-by-two contingency table constructed from a presence-absence map of two species would be sufficient to compute the test statistics and perform the statistical tests proposed in this article. Some previous studies have investigated species co-occurrence through incidence data of different survey sites. We focus on using presence-absence maps for a specific study plot instead. The proposed methods are assessed by a thorough simulation study.

Methods

A Chi-squared test is used to determine whether the distributions of two species are independent. If the null hypothesis of independence is rejected, the

SUBMITTER: Chang YM 

PROVIDER: S-EPMC10503499 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature