The Oxygen Producers
Microscopic algae that produce over 50% of Earth's oxygen. These tiny organisms form the base of most marine food webs, converting sunlight and nutrients into energy through photosynthesis. Every second breath we take is possible thanks to phytoplankton.
Despite their tiny size (0.002-0.2mm), phytoplankton collectively have a massive impact on global climate and marine ecosystems.
Ecological Importance
Key Functions
- • Produce 50-80% of Earth's oxygen
- • Base of marine food webs
- • Absorb massive amounts of CO2
- • Influence global climate patterns
Diversity and Distribution
Phytoplankton include thousands of species, from diatoms with their glass-like shells to dinoflagellates that can create bioluminescent displays. They thrive in nutrient-rich waters, particularly in upwelling zones where deep, nutrient-rich water rises to the surface.
Changes in phytoplankton populations can indicate shifts in ocean health and climate, making them important indicators of ecosystem change.