Concepts

A measure of community diversity that accounts for both species richness and relative abundance, calculated using the Shannon-Weiner index

The ratio of dry root weight to total dry plant weight, used as an indicator of soil nutrient availability with higher values indicating nutrient-poor conditions

A quantitative measure of uncertainty about an outcome of a draw from a probability distribution

Standardized measure of interaction strength ranging from -1 to 1, where positive values indicate facilitation and negative values indicate competition