Conservation Ecology: Commonness and rarity: theory and application of a new model to Mediterranean montane grasslands: Table 1

Table 1. A scheme for describing types of commonness and rarity.

A) The original proposal by Rabinowitz (1981).

Geographic range Wide Narrow

Habitat specificity Broad Restricted Broad Restricted

Abundance somewhere large Common Predictable Unlikely Endemics

Abundance everywhere small Sparse Non-existent

B) Our new scheme adding the notion of habitat occupancy.

Geographic range Wide Narrow

Habitat specificity Broad Restricted Broad Restricted

Abundance Large Small Large Small Large Small Large Small

Habitat occupancy high Common Widespread Indicator Locally common Non-existent Endemic indicator

Habitat occupancy low Highly dispersed Sparse Locally endangered Potentially endangered Endangered

Geographic range	Wide		Narrow
Habitat specificity	Broad	Restricted	Broad	Restricted
Abundance somewhere large	Common	Predictable	Unlikely	Endemics
Abundance everywhere small	Sparse		Non-existent