The loop elasticities can also be combined (e,g., in order to compare two life-history morphs each of which is age structured as in the Campanula americana example discussed below).
The following examples of demographic models of two herbaceous plants, Campanula americana and Dipsacus sylvestris, and the loggerhead sea turtle, Caretta caretta, will be used to illustrate the value and limitations of loop analysis.
Demographic loop characteristics of Campanula americana. Elas- ticity Unique of edge No.
-- Campanula americana is endemic to eastern North America and occurs in partial shade in moist thickets and floodplain woods, along streams, roads, and in drier upland woods (Gleason and Cronquist, 1963).
The ecological life cycle of Campanula americana in northcentral Kentucky.