![]() The main difference is that umbrella species often travel far. Umbrella species are like keystone species. Some of the Patagonian habitats would fall apart without this hummingbird. When hummingbirds eat, they move the pollen where it needs to go. When pollen is moved to another part of a plant, it can make seeds. Hummingbirds eat sweet nectar in certain flowers and trees. There, a hummingbird and some native plants work together. A change with one would affect the other. Fewer trees make it easier for lions to hunt.Īnimals and plants can work as a team. Grass feeds antelopes, wildebeests, and zebras. With elephants eating trees, grasses grow easily. This keeps it a grassland, instead of a forest. Elephants eat the shrubs and small trees. Plant eaters can also be keystone species.Įlephants in the southeast of Africa eat plants. Beaver and songbird groups are growing again. government began bringing wolves back to Yellowstone. Trees and shrubs no longer covered them in shade. Plants were no longer there to hold the soil in place. This hurt the fish, beavers, and songbirds. They ate too much grass and other plants. So, by 1924, the government killed all the wolves. They thought the wolves were eating too many elk and bison, and cows on farms. The government thought the wolves were damaging the area. In the 1800s, hundreds of wolves lived in Yellowstone National Park. How they eat and where they live depends on what wolves do. The elk, bison, rabbit, and birds here are food for predators. It has mountains, forests, grasslands, and rivers. In the Greater Yellowstone Ecosystem (GYE), gray wolves are a keystone species. It could even disappear.Ī keystone species is often a predator or hunter. Without them, the ecosystem would have to completely change. No other creature can do the job of a keystone species. A species is a certain group of plant or animal. ![]() An ecosystem is a community of plants and animals. A keystone species is a life form that affects a whole ecosystem.
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