Adaptation of a stage-projection model for species with multiple year reproductive cycles

Ecological Modelling
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Abstract

We apply stage projection matrices to multiple age and reproductive categories, deriving the stable age - reproductive category distribution for populations with multi-year reproductive cycles and identifying conditions for the existence of a dominant latent root. Given the stable distribution of age and reproductive category and the number of female young for each reproductive category, the age specific fecundity rates can be calculated. For species with multi-year reproductive cycles, the fecundity rate associated with the stable age distribution is often not a smooth function of age, but fluctuates as a larger or smaller fraction of females becomes available to breed. We suggest that fecundity rates for species with multi-year reproductive cycles be defined in terms of litter size and probabilities of conception and successful gestation rather than average fecundity.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Adaptation of a stage-projection model for species with multiple year reproductive cycles
Series title Ecological Modelling
DOI 10.1016/S0304-3800(96)00073-7
Volume 97
Issue 1-2
Year Published 1997
Language English
Publisher Elsevier
Contributing office(s) Alaska Science Center, Alaska Science Center Biology MFEB
Description 11 p.
First page 47
Last page 57