see all translations uk jiËld us jiËld c2 t to supply or produce something positive such as a profit an amount of food or information an attempt to yield increased profits the investigation yielded some unexpected results favourable weather yielded a good crop
Phytoplankton are microscopic marine plants. P hytoplankton, also known as microalgae, are similar to land-based plants in that they contain chlorophyll and require sunlight in order to live and grow. Most phytoplankton are buoyant and float in the upper part of the ocean, where sunlight penetrates the water. Phytoplankton also require inorganic nutrients such as nitrates, phosphates, and sulfur which they convert into proteins, fats, and carbohydrates.
At the base of the aquatic food web are: 1  Plankton Plankton are microscopic plants and animals whose movements are largely dependent upon currents. 2  Phytoplankton Plant plankton are called phytoplankton and may be single cells or colonies. 3  Zooplankton Animal plankton are called zooplankton. In the Great Lakes, most producers are phytoplankton, or microscopic floating plants. 2  An example of phytoplankton is green algae. 3  Large rooted plants, another type of producer, provide food and shelter for different organisms, fish and wildlife.