Sentence examples for substantial population size from inspiring English sources

Thus, while the bush rat appears resilient to substantial population size perturbation, once a critical minimum population size threshold has been reached, this species may be susceptible to local extinction.

It survives with a substantial population size only on Panay, i.e., in the forest of the Central Panay Mountain Range [ 23]. A. waldeni generally exhibits lower genetic diversity values, both at microsatellites and mtDNA, than its less endangered sister species A. leucocephalus.

Professional groups such as demographers have already identified some issues with this approach (IUSSP 2015), noting the difficulties of disaggregation for demographic indicators which require substantial population sizes in order to identify significant trends and changes.

However, another explanation also seems likely: under a model of exponential growth, the bulk of the population increase is weighted towards the present, and for the aforementioned reasons [28], we are not likely to capture the effects of substantial increases population size in modern times.

The diet of this penguin has been the subject of several studies due to the importance of this species in the Southern Ocean ecosystem [1] and because there have been substantial decreases in population size at many of their breeding sites over the last three decades [e.g. 26].

The Northeastern group had the highest levels of internal structure and coalescent analyses did not provide evidence for any substantial net demographic expansion; the populations appear to have persisted in isolation at or near their sampling sites during Pleistocene glaciations without substantial change in population size.

Regardless of observer reliability, the matrix method produced substantial overestimates of the population size when surveying effort was low.

This is of conservation significance because a skewed sex ratio will lead to a substantial reduction in effective population size [ 5].

The degree to which gene divergence predates population divergence can be substantial when the effective population size (Ne) of the common ancestor is large relative to the divergence time [ 47].

However, the impact of the population size was substantial only when it was below ~1000; after that the effect reaches saturation, i. e. populations of 1000 or more organisms all evolve in approximately the same way (Fig. 4).

Hurricane Katrina increased modeled direct, indirect, and total health care costs and also reduced life expectancy as well as quality-adjusted life expectancy, with the economic impact being quite substantial because of the large population size affected.