The significance of ecological niches in ecosystems lies in their role in promoting biodiversity and ecosystem stability. Each species occupies a unique niche, allowing them to coexist by utilizing different resources or fulfilling various roles, such as producers, consumers, or decomposers. This differentiation minimizes competition and enables a wider variety of species to thrive in a given area. Maintaining ecological niches is crucial for fostering resilience and adaptability within ecosystems, especially in the face of environmental changes and challenges.