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

Adaptation of a stage-projection model for species with multiple year reproductive cycles 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ecological Modelling Elsevier

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

Ecological Modelling, Volume 97 (1) – Apr 15, 1997

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Publisher
Elsevier
Copyright
Copyright © 1997 Elsevier Ltd
ISSN
0304-3800
eISSN
1872-7026
DOI
10.1016/S0304-3800(96)00073-7
Publisher site
See Article on Publisher Site

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

Journal

Ecological ModellingElsevier

Published: Apr 15, 1997

References

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