Ecosystems

An ecosystem is a community of living organisms—Fauna, Flora, and microorganisms—interacting with each other and their physical environment in a bounded region. These dynamic systems are held together by flows of Energy and cycling of nutrients, creating intricate webs of Life and Action.

Ecosystems operate through interconnected processes: Photosynthesis captures solar energy, food webs distribute that energy through populations, and decomposition returns nutrients to soil and water. The Robustness of an ecosystem depends on Biodiversity, the variety of species that provides Redundancy and resilience to disturbance.

Earth's ecosystems range vastly in scale and character—from Rainforests dense with life to Wetlands that cycle water and carbon, from coral reefs to grasslands. Each reflects unique patterns of Climate, geography, and evolutionary history. Ecosystems also interact at larger scales through regional and global integration of materials and energy.

Human activities reshape ecosystems profoundly. Understanding them is essential for sustainable Construction of societies, conservation of species, and stewardship of planetary resources.

Related

Biodiversity, Nutrient cycles, Habitat, Conservation, Food Web, Climate, Succession