Keystone species are those that have a disproportionately large impact on their community or ecosystem relative to their abundance (Power et al., 1996). In the mid-1990s, a … The importance of keystone species lies in the way they affect other organisms in the ecosystem. Keystone species definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Keystone plants, like the Sonoran Desert’s saguaro cactus, are those that provide a critical source of food and/or shelter for other species. Th erefore, to maintain ecosystem functioning and services (like water purifi cation and carbon sequestra-tion), it may be critical to identify and protect those species. Keystone Species Definition. A keystone species is an organism that helps define an entire ecosystem.Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.. Keystone species have low functional redundancy.This means that if the species were to disappear from the ecosystem, no other species would be able to fill its ecological niche. Look it up now! According to Paine’s description, their presence is crucial for maintaining numbers and diversity of other species, which makes their role exceptional in the ecosystem [1] . An alternative form of the same idea is that some species are strong interactors. The keystone species could be a huge predator or an unassuming plant, but without them the ecosystem may not survive. These discoveries about ecosystem dynamics led to debates about the keystone species concept, with some calling it "poorly defined and broadly applied." Keystone species are those which have an extremely high impact on a particular ecosystem relative to its population.Keystone species are also critical for the overall structure and function of an ecosystem, and influence which other types of …

Keystone Species Every ecosystem has certain species that are critical to the survival of the other species in the system. of a keystone species will produce drastic changes. Types of Keystone Species Th ere are many types of keystone species, and some of them have been thoroughly studied.