In ecology, the term productivity refers to the rate of generation of biomass in an ecosystem, usually expressed in units of mass per volume (unit surface) per unit of time, such as grams per square metre per day (g m−2 d−1).
What is productivity in ecosystem Class 12?
When are all the ecosystems equally productive?
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What do you mean by ecosystem productivity explain with few examples?
Productivity is the rate of biomass production. … In other words, ecosystem productivity represents the total amount of energy (organic matter) fixed or stored by the autotrophs per unit time in theecosystem.
What does the productivity of an ecosystem measure?
The productivity of an ecosystem measures the energy in an ecosystem. Gross Primary Productivity is the total energy made to be used by plants, the Net Primary Productivity is this energy minus energy lost in respiration.
What are the types of productivity in ecosystem?
According to Odum there are three types of productivities – primary productivity, secondary productivity and community productivity.
What is productivity in aquatic ecosystem?
Primary productivity is the conversion of the sun’s energy into organic material through photosynthesis. … In aquatic ecosystems, primary productivity is driven by the availability of nutrients and light and, to a lesser extent, by temperature and other factors.
What is the most productive ecosystem?
The world’s ecosystems vary tremendously in productivity, as illustrated in the following figures. In terms of NPP per unit area, the most productive systems are estuaries, swamps and marshes, tropical rain forests, and temperate rain forests (see Figure 4).
What is meant by productivity in ecosystems and why are some ecosystems more productive?
Productivity in an ecosystem refers to the percentage of energy that enters the ecosystem in the form of biomass at a particular trophic level. It is the rate at which biomass is formed in the ecosystem. At each trophic level in the ecosystem, a characteristic amount of biomass is present.