phytoplankton), a consumer (e.g. They can be thought of as the first and most important step in the food chain. Focus Question What are the roles played by plants, animals, and other organisms in marine food webs off the California coast? 3. Define autotroph. Solution for The primary producers in an ocean grazing food web are usually _____. An example of a decom poser in the ocean is bacteria. Organisms can be divided into producers, consumers and decomposers within a food web: producers - green plants - they make their food using the Sun's energy (photosynthesis) consumers - usually animals - they must eat other plants and animals for energy; decomposers - they break down dead plants and animals for food e.g. Marine primary production is the chemical synthesis in the ocean of organic compounds from atmospheric or dissolved carbon dioxide.It principally occurs through the process of photosynthesis, which uses light as its source of energy, but it also occurs through chemosynthesis, which uses the oxidation or reduction of inorganic chemical compounds as its source of energy. Many species in the ocean have evolved to eat plant matter, rather than meat — some species eat both. Food web is a connection of multiple food chains. These are called producers. Echinoderms like sea urchins, sea stars and sea cucumbers hunt and eat live food, but they also move around and consume decaying organic matter that covers rocks and other surfaces. Discuss with the students the differences between a food chain and a food web. Producer-Consumer-Decomposer Food Web Bibliography Producer. Food Web of the Atlantic Ocean. Consumer. A food chain has only one link for producers but many links for consumers. The Deep Sea Food Web by Grace Eichenour Key: Eaten by or related to Humans/Top Predator Eaten by or related to Secondary Consumers Eaten by or related to Higher Level/Tertiary Consumers Top Predator Eaten by or related to Primary Consumers No arrow means they create their own Organisms that make their own food through photosynthesis/ chemosynthesis. A producer (also known as the 1rst order consumer) is the first trophic level, it makes its own food from photosynthesis. Kelp are strong and flexible they can hold large amounts of water so they don't dry out. The primary consumer (also known as the 2nd order consumer) is the 2nd trophic level. At the top of the food web there are larger consumers such as fish, penguins and seals. The ocean supports a great diversity of life and ecosystems 6. A food web that showcases different interlinked chains is a more accurate representation of the flow of food energy from one organism to the other. Why do warm-blooded animals have special demands in cold seas? Understand that simple food chains are vulnerable to extreme changes and that food webs are more complex and stable. In the ocean, there are three primary producers: photosynthetic plants, chemosynthetic bacteria, and detritus. Ch. Copepods feed on dinoflagellates and incorporate this energy into their own tissues. Cyanobacteria are photosynthetic, though they aren't plants. The main producers in the ocean are algae and other microscopic organisms called phytoplankton. Pacific Ocean Food Web The Sun Algae Algae uses photosythesis to convert sunlight into energy and then it moves on through the food web of the ocean. Since producers make food, they are the first link in a food chain. An example of a food chain in this diagram is … The most common producers our biome are seaweed and algae. What is meant by trophic levels? Their blades can catch sunlight from the bottom of the sea. Consumers are organisms that cannot … Decomposers A decomposer is an organism that decomposes material. Producers turn it to something usable then it moves from there. The producers in the Arctic Ocean are phytoplankton, microscopic organisms that make their own food. For an environment to remain healthy, the food chain must remain unbroken. 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