When are all the ecosystems equally productive? All the ecosystems are equally productive under drought conditions. According to researches, under drought conditions, the tropical forests can use water as efficiently as deserts.
Which ecosystem is most productive?
Tropical rainforests show the highest productivity in terrestrial ecosystems.
Why different ecosystems have different productivity?
Net primary productivity varies among ecosystems and depends on many factors. These include solar energy input, temperature and moisture levels, carbon dioxide levels, nutrient availability, and community interactions (e.g., grazing by herbivores) 2.
What determines ecosystem productivity?
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). The unit of mass can relate to dry matter or to the mass of generated carbon.
What makes an ecosystem more productive?
A high primary productivity rate in the ecosystems is obtained when the physical factors (for instance: water, nutrients and climate) are favourable. The presence of some forms of secondary energy can also help to increase the primary productivity rate.
Which ecosystem is less productive?
Least productive ecosystem is desert and deep lake.
What ecosystem has the lowest productivity?
Deserts, tundra, and the deep ocean are the least productive ecosystems, typically having an energy fixation of less than 0.5 × 103 kilocalories per square meter per year (thousands of kcal/m2/yr; it takes one calorie to raise the temperature of one gram of water by 34°F [1°C] under standard conditions, and there are …
What are the different productivity ecosystems?
According to Odum there are three types of productivities – primary productivity, secondary productivity and community productivity.
What is ecosystem productivity explain the different types of ecosystem productivity?
Productivity in ecosystems is of two kinds, i.e., primary and secondary. Green plants fix solar energy and accumulate it in organic forms as chemical energy. As this is the first and basic form of energy storage, the rate at which the energy accumulates in the green plants or producers is known as primary productivity.
Which ecosystem has highest productivity Upsc?
Tropical rainforest have highest primary productivity and is least in desert.
Which 3 ecosystems have the highest productivity?
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 world ecosystem have high and low net productivity?
The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.