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The producers in this food web are the terrestrial plants, salt marsh plants, aquatic plants and algae. The primary consumers of the food web are the insects, small fish and the snail. Most of the primary consumers are herbivores. The secondary consumers are the rat, the frog and the big fish. The tertiary consumers are the snake, duck, crane and the sparrow. The quaternary consumer of the food web is the hawk. There are no scavengers or decomposers that are included. http://images.tutorvista.com/content/ecosystem/food-web-terrestrial-aquatic-ecosystem.jpeg