Homing Fidelity and Reproductive Rate for Migratory Populations
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Short-term and long-term population growth rates can differ considerably. While changes in growth rates can be driven by external factors,
we consider another source for changes in growth rate. That is, changes are
generated internally by gradual modification of population structure. Such a
modification of population structure may take many generations, particularly
when the populations are distributed spatially in heterogeneous environments.
Here the net reproductive rate R0 is not sufficient to characterize short-term
growth. Indeed, a population with net reproductive rate greater than one could
initially decline precipitously, or a population with net reproductive rate less
than one could initially grow substantially. Thus we augment the net reproductive rate with lower and upper bounds for the transient reproductive rate, Rl and Ru. We apply these measures to the study of spatially structured salmon
populations and show the effect of variable homing fidelity on short-term and
long-term generational growth rates.
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http://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_b1a7d7d4d402bcce http://purl.org/coar/version/c_71e4c1898caa6e32
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en