While the exponential equation is a useful model of population dynamics (i.e., changes in population numbers over time), in the real world we are not swimming in bacteria, or Paramecium, or slime moulds. That is, something happens to stop the growth of organisms, be they cells in ...
These questions have a long history in biology, with Darwin having emphasized gradual change23, but the modern synthesis and subsequent genetic and theoretical studies having provided mechanisms for more abrupt increases in RI and completion of speciation (citations above). A focus on RI is justifie...
Human actions constantly change the environmental conditions for other organisms, which are inevitably affected by these rapid shifts. We need to monitor the changes we induce in the populations, whether they are for conservation purposes of species which become threatened or for measuring and ...
The movement of organisms over space has manifold consequences for both the ecology (Levin, 1976; McMurtrie, 1978) and genetics (Endler, 1977; Karlin, 1982) of populations. In this paper I examine how the rate of immigration influences the size, stability and genetic composition of a peripher...
This drives the final resolution of the conflict: the irreversible loss of sexual reproduction and the complete dependence of the host on its symbiont. Conclusions This study shows that dependence among organisms can evolve rapidly due to the resolution of the conflicts between cytoplasmic and nuclear...
Due to instability of production processes, environmental and other factors, most populations of manufactured items in real life are heterogeneous. Similar considerations are obviously true for biological items (organisms). Neglecting heterogeneity can lead to serious errors in reliability assessment of ...
adapted to their local habitat conditions and predict their future response to environmental change. In particular, for long-lived and sessile organisms such as forest trees, many of which are of ecological and economic relevance, the climate change rate may be too quick for populations to adapt ...
Bridging the gap from ocean models to population dynamics of large marine predators: A model of mid-trophic functional groups The modeling of mid-trophic organisms of the pelagic ecosystem is a critical step in linking the coupled physical鈥揵iogeochemical models to population dyn... Patrick,Leho...
(SNVs/kbp, 0–65) with a different SNP calling approach30. The pN/pS results show that these sedimentary cold seep populations are under purifying selection, suggesting the possibility that these organisms have reached an adaptive optimum in this relatively stable environment, and maintain this by...
Especially for organisms with constrained division-time distributions, the noise from Poisson inoculation dominates the noise due to growth, which explains why the blue circles and green triangles are so similar in Fig. 2. For exactly inoculated populations, broadening the age-structured division-time...