Potential-Growth Indicators Revisited: Higher Generality and Wider Merit of Indication

The notion of a potential-growth indicator came to being in the field matrix population models long ago, almost simultaneously with pioneering Leslie model for age-structured dynamics, although term has been given and theory developed only recent years. represents an explicit function, R(L), L elements indicates position spectral radius relative 1 on real axis, thus signifying growth, or decline, stabilization. Some indicators turned out be useful theoretical layouts practical applications prior calculating itself. most senior (1994) popular indicator, R0(L), is known as net reproductive rate, we consider two others, R1(L) RRT(A), later on. All three are different terms their simplicity level generality, illustrate them case study Calamagrostis epigeios, long-rhizome perennial weed actively colonizing open spaces temperate zone. While R0(L) fail, respectively, because complexity insufficient RRT(L) does succeed, justifying merit indication.