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Note on a method for analyzing stage‐frequency data
Author(s) -
Manly Bryan F. J.
Publication year - 1993
Publication title -
population ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 59
eISSN - 1438-390X
pISSN - 1438-3896
DOI - 10.1007/bf02513593
Subject(s) - stage (stratigraphy) , statistics , biology , sampling (signal processing) , distribution (mathematics) , population , unit (ring theory) , constant (computer programming) , mathematics , computer science , demography , mathematical analysis , paleontology , mathematics education , filter (signal processing) , sociology , computer vision , programming language
Summary A new method for analyzing stage‐frequency data is proposed which is based on the estimation of rates of transition between one stage and the next highest stage in one unit of time, and a unit time survival rate that is assumed to be constant. Once these estimates are calculated it becomes possible to also estimate the mean durations of stages, stage‐specific survival rates, and numbers entering stages. An advantage of the method is that it can be applied with any distribution of entry times to stage 1, and any distribution of numbers in stages when sampling begins. Use of the method is illustrated on data from a copepod population in a Canadian lake.