A food web consists of several components; primary producers, primary consumers, secondary consumers, tertiary consumers, and so on. Primary producers include green plants and are the foundation of the food web.

sunlight

the sun

Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.

Autotrophs

Detritus food chain. This type of food chain starts from organic matter of dead and decaying animals and plant bodies from the grazing food chain. Dead organic matter or detritus feeding organisms are called detrivores or decomposers. The detrivores are eaten by predators.

Detritus, in ecology, matter composed of leaves and other plant parts, animal remains, waste products, and other organic debris that falls onto the soil or into bodies of water from surrounding terrestrial communities. Many freshwater streams have detritus rather than living plants as their energy base.

Detritus Synonyms – WordHippo Thesaurus….What is another word for detritus?

Human beings are omnivores because sometimes we eat the plants directly and sometimes we eat animals who have eaten plants, or even animals who have eaten other animals. Scavengers and decomposers are also heterotrophs, but instead of consuming living plants and animals they consume them in the form of detritus.

What Is Detritus?: Detritus is organic waste material in the ecosystem. Detritus includes dead plants, animals, and feces. Detritus provides important value for the ecosystem, particularly wetlands.

Active soil organic matter also referred to as detritus. Stable soil organic matter, often referred to as humus. The living microbial biomass includes the microorganisms responsible for decomposition (breakdown) of both plant residues and active soil organic matter or detritus.

First in the lineup of decomposers are the animals that eat detritus. Beetles, earthworms, millipedes, termites, pill bugs, snails, and slugs all eat detritus. These creatures are called shredders.

Just as in any other ecosystem, energy flows one way through the food chain — from detritus through microorganisms to nematodes, insects and larger animals.

Explanation: Number of Organisms at the level of producers (First level) is more and hence the availability of energy also will be more at the level of producers. Amount of energy available decreases as we you move from the level of producers to the top carnivores.

The massive quantities of detritus produced in a mangrove swamp — the litter of twigs, bark and leaves from mangroves themselves and the organic waste of animals — form the foundation of the ecosystem’s food web, along with nutrients washed in by rivers and tides.