Sanakirja.org

(ecology) A particular position occupied by a group of organisms in a food chain.

First trophic level. The plants in this image, and the algae and phytoplankton in the lake, are primary producers. They take nutrients from the soil or the water, and manufacture their own food by photosynthesis, using energy from the sun.

(ecology) A particular position occupied by a group of organisms in a food chain.

Consumer categories based on material eaten (plant: green shades are live, brown shades are dead; animal: red shades are live, purple shades are dead; or particulate: grey shades) and feeding strategy (gatherer: lighter shade of each color; miner: darker shade of each color)

(ecology) A particular position occupied by a group of organisms in a food chain.

Second trophic level Rabbits eat plants at the first trophic level, so they are primary consumers.