Ecological Niche The ecological niche of an organism Is a complex set of interactions between an organism and its surroundings For example, a beaver's ecological niche includes building dams and flooding forested areas, killing trees providing habitat for the ducks and other animals, serving as food for predatorsEcological Niche The ecological niche of an organism is a complex set of interactions between an organism and its surroundings. For example, a beaver’s ecological niche includes building dams and flooding forested areas, killing trees, providing habitat for the ducks and other animals, serving as food for predators