A cactus relates to other organisms within its ecosystem as the dominant vegetative cover in the desert. It thereby has the responsibility for adding beauty and color, conserving water, dispersing sunlight, holding soil, and oxygenating the environment.
Additionally, a cactus has a responsibility to pollinators with its flowers, and to predators. In fact, its stem provides shelter to predators such as the Gila woodpecker [Melanerpes uropygialis]. Its fruits feed predatory wildlife. Among its predators, birds and rodents return the favor of being fed by dispersing seed over a wider area than the cactus does on its own.
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Cactus plants help the ecosystem by adding beauty to extreme environments. They encourage conservation of soil and water by their soil hugging roots and their water efficient ways. They offer jobs to pollinators, shade to the surrounding ground, and shelter to nesting birds. They promote environmental health by taking in carbon dioxide and releasing oxygen. They provide drink and foodthrough their flowers, fruits, and seeds.
Cactuses number among the producers in the food chain. As with other types of vegetation, they provide food for consumers. They indeed cater to a varied consuming audience. Among their audience are birds, insects, mice, and people.
Cactus wrens are omnivores. Because they eat both carnivorous and herbivorous insects as well as fruit, they are primary, secondary, and tertiary consumers.