This includes all of the connections between producers and consumers in an ecosystem. The food web shows how interconnected all of the different organisms are.

The tiny organisms are found in freshwater ecosystems, including those polluted ... may not sufficiently protect a vital link ...

Freshwater ecosystems provide drinking water, food, and natural flood controls for billions of people, making their preservation critical. The Nanay River winding through Peru's Amazon jungle as ...

Shoals of the species are overgrazing algae and planktivorous animals that form the basis of the aquatic food chain, depleting freshwater ecosystems and impacting shrimp and other aquaculture ...