For example, in 2010, the sole immigrant found was responsible for a brief increase in the diversity and decrease in the inbreeding quotient. The actual trapping of the pumas/cougars and subsequent monitoring was also integrated into the study. Individual immigration and resultant gene flow was simulated to find out what could happen in the near future. Models from this paper show that they are in fact at high risk of extinction even before any long term effect from inbreeding can take effect. The interest in one species here is in how rare the situation is, the animals size and how much impact they could make on urban life if they adapted successfully.
Of course, these conditions exist for many species, both plant and animal, where contact is lost with neighbouring populations. And how green do locals want their Valley? The factors involved could create an extinction threat, habitat extinction, or enforced inbreeding leading to the condition known as genetic inbreeding depression. Los Angeles caters for many tastes but for large carnivores to live in the vicinity takes great stamina and survival technique. The reduced population of mountain lions/pumas/cougars (so many names!) that became inbred in Florida are serving as guinea pigs for a similar urban situation around the Santa Monica Mountains in California. Perhaps there is a step too far, if it is expected to operate in LA? Cougar image The size and strength of the mountain lion makes you forget that its not a pantherine, this is a feline species, just like your pet, but capable of cleaning up the West as a prime top predator performing ecosystem services.
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