The Eastside is a region of Los Angeles County containing four neighborhoods cataloged by Mapping L.A., the Los Angeles Timesâ resource for boundaries, demographics, schools and news within the city.
Jaguars are considered an apex predator and a keystone species. As a top predator and keystone species, jaguars play a crucial role in the ecosystem. Without the jaguar, herbivorous prey animals would decimate the plants of their ecosystem. Though few in numbers, jaguars prevent the ecosystem from collapsing.aguars are considered an apex predator and a keystone species. As a top predator and keystone species, jaguars play a crucial role in the ecosystem. Without the jaguar, herbivorous prey animals would decimate the plants of their ecosystem. Though few in numbers, jaguars prevent the ecosystem from collapsing.
The role that a keystone species plays in its ecosystem is analogous to the role of a keystone in an arch. While the keystone is under the least pressure of any of the stones in an arch, the arch still collapses without it.Similarly, an ecosystem may experience a dramatic shift if a keystone species is removed, even though that species was a small part of the ecosystem by measures of biomass or productivity.It became a popular concept in conservation biology.n his follow-up 1969 paper, Paine proposed the keystone species concept, using Pisaster ochraceus, a species of starfish, and Mytilus californianus, a species of mussel, as a primary example.