Evolutionary Conservation Biology: Age Structure, Mating System, and Population Viability

摘要: rate to changes in life-cycle transitions can be computed. Individual life-history traits are important determinants of a population’s extinction risk, and also both factors targets adaptive response environmental change. When population size is small – always concern conservation biology individual the structure interactions between individuals genetic system expected influence viability. The mating system, for example, may conducive an Allee effect (see Chapter 2), inbreeding depression potentially factor process populations. In this chapter, we study interplay structure, terms age sex, persistence. Two-sex structured models that incorporate specific features social possible differences male female life cycles analyzed. Also, attempts merge demography into integrated presented. Size-structured models, more appropriate plants some animal species, not considered here, but lead similar developments. 3.2 Extinction Risk Age-structured Populations A graph macroscopic description average organism within population, describing effects traits. as set share same cycle, classes. trait resultant demographic parameters (survival, fecundity) quantify flows Iterating cycle discrete time realizes dynamics phenotype given environment.