"No one can know for sure what happened to the Pleistocene megafauna in this region, but the drop in Sporormiella is a strong indicator of extinction," Rozas-Davila says.
We found that the unsteady extinction point is much higher than the steady extinction point and OH radical is a more adequate indicator of extinction than temperature, especially for turbulent and unsteady flames.
The relation between Lsf and the infrared excess IRX ≡ LtIr/Lfuv, known as an indicator of extinction as a function of IR luminosities, is shown in Fig. 10. Figure 10 has the trend that galaxies which have larger Lsf have high IRX, consistent with figure 7 of Buat et al. (2007).
Geographic range is a good indicator of extinction susceptibility in fossil marine species and higher taxa.
Experimental results suggest that CH, OH∗, C∗2, and CH∗ are not adequate indicators of local extinction; rather they provide signals of subtle shifts of hydrocarbon consumption among different chemical pathways.
In contrast, the worst dispersers ("focal" species) have a low indicator power, as a probable consequence of extinction events occurring in hedgerows, where ecological conditions are suboptimal with respect of forest species.
With the confidence of extinction index, cases of putative extinction can be raised.
Fontaine et al. (2007) addressed the problem of the current indicators that do not cover the species at risk of extinction, as most of rare species are not considered in the European Union's 2020 target.
A Direct Numerical Simulation (DNS) study is performed to determine a quantitative indicator of imminent global extinction in spray flames ignited by a spark.
New species under consideration for protection have "aesthetic, ecological, education, historical, recreational and scientific value," and those facing extinction "could be indicators of bigger ecosystem problems that could hurt us," said Bridget Fahey, regional director of endangered species for the Interior Department's Fish and Wildlife Service.
