Biome and Ecosystem Essay. Describe with an example ecosystem

Biome and Ecosystem
Name
Institution
Biome and Ecosystem
Keystone species are said to have an exceedingly high influence on a precise ecosystem that is relative to its population. It plays an important role that is particular. An example of a keystone is the starfish pisaster ochraceus. Inhabiting the rocky marine intertidal communities of North America this predatory fish is responsible for maintaining the local diversity, it feeds on the mussel Mytilus californianus (Mills et al. 1993). It plays an important role of feeding on the mussel because if the predator is unavailable in the ecosystem, the mussel inhabitants increase at a high rate covering the rocky intertidal shores, and this means other species cannot establish themselves. Thus, the starfish does support the species structure and diversity of these other communities.
Invasive species is a non-native species that significantly disrupts and modifies the same ecosystem it colonizes (Lowe et al. 2000). The said species can colonize a new area through migration, but they tend to be introduced into the said activities by other species around them (Lowe et al. 2000). An example of how they migrate is through human activities such as pet trade and other activities in global trade or commerce. However, most of these species do not survive the extended periods when they are introduced to new territories, as they do not have the evolutionary adaptations to cope with the encounters that are in the surroundings.
An example of an invasive species is the sea lamprey a primitive fish that affected the North America great lakes region. This fish has a special modified sucker that it uses to latch onto other game fish and drain all the blood. Due to this the canal system was developed and permitted the species to migrate to the great lakes...