Where Life Thrives: The World’s Most Bio-Productive Ecosystems 

By Capt. Olivia

Biological productivity looks at how much biomass is being produced in a given area. Ecosystems with high bio-productivity appear as lush, thriving environments jam-packed with plants and animals. There are multiple ways to measure bio-productivity, which alter rankings slightly, but tropical rainforests, estuaries (including salt marshes), and swamps consistently rank among the most productive ecosystems on Earth. 

Tropical Rainforests

Tropical rainforests (e.g. the Amazon) thrive due to consistent, year-round sunlight, heat, and rainfall. These conditions allow life to thrive, and decomposition to happen fast, so that nutrients are rapidly recycled within the system.

Because of this they are home to the highest terrestrial biodiversity on the planet, and contribute a massive amount of carbon sequestration, which helps mitigate global climate change.

Estuaries

Estuaries are semi-enclosed areas where salt water from the ocean and fresh water from rivers meets and mixes together (e.g. bays, harbors, marshes). The influx from different sources provides a variety of nutrients and consistent cycling and exchange. Shallow waters are warm, protected, and receive abundant sunshine – all encouraging ample life.

This combination provides the perfect nursery for fish, mollusks, crustaceans, and other marine life, which in turn provide food, water filtration, and nutrient cycling. Estuaries are able to absorb huge amounts of water, wind, and wave action and are fundamental to stabilizing shorelines and protecting coasts from storms.

Swamps (Forested Wetlands)

Swamps (e.g. the Congaree) receive a near-endless supply of water (sensing a theme here?). However, that water tends to be slow moving. That slow-moving water doesn’t carry organic material away, but allows it to settle on the ground and slowly decompose in the low-oxygen content water: the perfect conditions for build up of nutrient rich soils. These flooded forests are a collision of aquatic and terrestrial ecosystems, which contributes to their high productivity.

These conditions provide a large variety of habitat for diverse wildlife. They also provide benefits in the form of high levels of long-term carbon storage, flood control, and water filtration.

The Most Bio-Productive Regions in the United States

In the U.S., the Southeast coastal region stands out as a productivity hotspot—where many of these systems overlap, interact, and amplify each other.

Areas like coastal Louisiana and South Carolina, the massive Mississippi River Delta, and the Florida Everglades combine diverse nutrient input, ample water availability, and a warm climate with a long growing season – a perfect recipe for massive amounts of life to thrive.

Join us on a Folly Beach boat tour or kayak tour around Charleston, SC to learn more about our local estuaries!