What are the effects stromatolites?

Stromatolites, formed by the activities of microorganisms like cyanobacteria, significantly impact ecosystems by contributing to nutrient cycling and providing habitat for various marine life. They play a crucial role in carbon fixation and oxygen production, influencing global biogeochemical cycles. Additionally, stromatolites serve as important geological records, offering insights into Earth's early life and environmental conditions. Their presence can also indicate healthy marine ecosystems, as they are sensitive to environmental changes.