A single time step represents a generation, which includes five events (Fig. 1): reproduction, density-dependent survival, density-independent survival, natural selection, and escape of cultured individuals.
Then, for the default life cycle ordering (reproduction – escape – density dependence – density-independent survival – selection), we explore the effect of constant, variable, or pulsed spillover.
The fitness components lag, rate (population doubling time) and efficiency of reproduction (population density change) were extracted from high density growth curves and normalized to those of the S. cerevisiae reference strain, providing >360 precise measures of organism-environment interactions.
Here, we mathematically detail the model given the default life cycle ordering of reproduction – escape – density-dependent survival – density-independent survival – selection.
The zero-sum gradient of N against K is simply the equilibrium fraction of occupied habitat, which is 1 1/R for a closed neutral scenario, where R is per capita lifetime reproduction before density regulation (b/d in Methods Equation 1 [24], [24]).
Within social groups, reproduction was density dependent.
Particularly, rainfall and relative humidity affected the rates of biological development, feeding, reproduction, population density, and survival of Aedes mosquitoes, thus increasing the DF transmission.
If a population dynamics model were used, these fundamental results would become clouded by arbitrary specifications of reproduction and density-dependence in the larval stages.
When the total population size needed for all successive harvests was reached (approximately 5 million worms), the nematodes were rinsed off the plates shortly after the molt to the fourth larval stage, suspended in S-buffer containing 100 μM FUdR (to suppress reproduction) at densities not exceeding 2000/ml and E. coli cells were added at ~3 × 109 cells/mL.
This result indicates that the reproduction of peak density by the IRI also has shortcomings at some locations.
We investigated the phenology and spatial patterns in Halophila decipiens by assessing biomass, reproduction and seed density in ~ 400 grab samples collected across nine sites (8 to 14 m water depth) between June 2011 and December 2012.
