Populations under Periodically and Randomly Varying Growth Conditions

摘要: A large number of natural populations result from single generations that do not overlap, so population growth occurs in discrete steps. The a species can then be described by an equation the type (1) where we consider time lapse between two as unity. Examples this poulation are many temperate zone arthropod with one short-lived adult generation per year [15], bivoltine insects (i.e. having summer and winter [81) cicadas adults emerging every 13 years [13].