Some of the earliest research on was conducted by Robert T. Paine, who actually coined the term keystone species. For over 25 ye
ars Paine and his students removed , a sea star, from tidal pools on the coast of Washington. Throughout his research, Paine discovered that removal of this predator resulted in A) another predator moving in to replace the sea stars. B) a change in trophic levels, with only producers and herbivores present. C) mussels becoming the dominant species and crowding out all competitors. D) a shift in the ecosystem and a new keystone species becoming established.
The predators were unable to keep the population of the mussels down. The mussels took more area of the rock. Other species that needed space did not return to the tidal pool. Otters can also be keystone species as they eat urchins. By doing so, they prevent the sea urchins form eating all the kelp plants and removing the entire habitat for many other species. The Keystone Species theory shows that this impact of few predators, that made up a minor amount of the total species, could have such a high impact on the ecosystem.
The ecosystem that consists of a producer and consumer is a decomposer
Explanation:
The ecosystem comprises a number of producers, ad decomposers. The producers belong to the bottom of the food chain and they are divided into primary and secondary such as plants and herbivorous animals like grass and deer.
The secondary environment consists of consumers that are also divided into primary and secondary that is wolves and Man.
The decomposers are the last in the food chain that acts of dead and decaying reasons and converts the nutrient energy into the soil that is take up again by plants.
Ex. The Population Will Increase If The Trend Continues and When The Population Reaches The Dark Shading, Then That's Over Populated and Means People Are Gonna Need More Food To Stay Alive and So The Population Can Keep Growing.
