![]() Eventually, the community would be destroyed since most of the species will be driven out.ĭifferences Between Orientation and Navigation If the sea stars move from the coral reef community, then there would be an explosive growth in the number of sea urchins and mussels (CK-12). ![]() The sea stars prey on sea urchins and mussels, both of which have no any other natural predators. For instance, in the coral communities, some of the sea star species are keystone species. ![]() Any significant changes in their number affect the population of several other species in the community. A keystone species are species that play a very critical role in its community (CK-12). Predators can control prey diversity (number of different species) where keystone species are involved. Eventually, the predator-prey relationship maintains the population of both the species in balance. The same happens for the predator animals the speedy and strong survive when the prey animal populace dwindles and produce offspring that can survive the conditions. The prey animals that survive to reproduce are those that are robust and thus produce offspring that are strong to suffer the environment. This way, they eliminate those animal preys that are not going to survive leaving the stronger animals to stay and breed. Predators have a tendency to attack and feed on the old, sick, weak and the younger prey animals. A predator controls its prey’s density (number in a given area) by using feeding on them thus limiting them from growing in number.
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