Yes, you are correct. In an ecosystem, the rate of assimilation of food energy by consumers is known as secondary productivity. This represents the energy stored in the biomass of organisms at the consumer trophic levels. Secondary productivity is a measure of the growth and reproduction of heterotrophic organisms in an ecosystem.

Secondary productivity is an important concept in ecological studies as it helps us understand the flow of energy through different trophic levels and the efficiency of energy transfer from one level to another. It's essentially the rate at which consumers convert the energy obtained from their food into their own biomass.

Primary productivity, on the other hand, refers to the rate at which producers (plants or other autotrophic organisms) convert solar energy into chemical energy through photosynthesis. Primary productivity forms the base of the energy pyramid in an ecosystem, and secondary productivity represents the energy flow through higher trophic levels (consumers).

Dr Gaurav H Tandon thank you for your contribution to the discussion

The rate at which food energy is assimilated at the trophic level of consumers is called secondary productivity. In other words, the rate of synthesis of organic matter by consumers is called as secondary productivity. Rate of formation of new organic matter by consumers is called secondary productivity. The consumers get raw materials for this purpose from producers; which is made possible through assimilation. Due to this the rate assimilation of energy at the herbivore level is called secondary productivity. When the herbivores consume the plants they convert the plant matter into the animal matter and therefore the assimilation of energy at the herbivore level is secondary productivity. Assimilation deals with the transport of food material by the blood vessels and the usage of those food materials for the production of energy. The breakdown of glucose to form ATP comes under cellular respiration and is part of catabolism. Assimilation Efficiency (=Digestibility) is the ratio of A to I. For herbivores it is 20- 50%, carnivores 80%. Plants are not very digestible because of lignin and cellulose.Assimilation efficiency varies with prey type, with AE for herbivorous species generally ranging from 60 to 95%, and carnivorous species higher, at more than 90%. The rate of resynthesis of organic matter by the consumers is known as secondary productivity. It depends upon the loss while transferring energy containing organic matter from the previous trophic level plus the consumption due to respiration and predation. Secondary productivity as the rate at which consumers convert the chemical energy in their food into their biomass. In ecology, the term productivity refers to the rate at which biomass is produced in an ecosystem. The secondary productivity is the production and formation of biomass through the consumers that are heterotrophs that means they are dependent upon producers for food. Secondary succession is the ecological succession that occurs after the initial succession has been disrupted and some plants and animals still exist. It is usually faster than primary succession as soil is already present, and seeds, roots, and the underground vegetative organs of plants may still survive in the soil.