Quick Answer: Which Type Of Ecosystem Is Biologically The Least Productive?

Which of the following ecosystem is least productive in terms of net primary production?

So, the correct option is ‘Open Ocean’..

Why are oceans least productive?

(i) There is insufficient radiation as sunlight decreases with the increasing depth of the ocean. (ii) Oceans are nitrogen deficient which is an important nutrient for plants.

Which is terrestrial ecosystem?

A terrestrial ecosystem is a land-based community of organisms and the interactions of biotic and abiotic components in a given area. Examples of terrestrial ecosystems include the tundra, taigas, temperate deciduous forests, tropical rainforests, grasslands, and deserts.

What determines the productivity of an ecosystem?

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 happens to matter in an ecosystem?

In ecosystems, matter and energy are transferred from one form to another. Matter refers to all of the living and nonliving things in that environment. Nutrients and living matter are passed from producers to consumers, then broken down by decomposers. Decomposers break down dead plant and animal matter.

Which ecosystem has the highest biodiversity?

Coral reefsCoral reefs are believed by many to have the highest biodiversity of any ecosystem on the planet—even more than a tropical rainforest. Occupying less than one percent of the ocean floor, coral reefs are home to more than twenty-five percent of marine life.

What are the two most productive land ecosystems?

The two most productive are estuaries, swamps and marshes, and tropical rain forests. The two least productive are open ocean, tundra, and desert. About what percentage of total potential net primary productivity of the entire earth and the earth’s terrestrial ecosystems are used, wasted, or destroyed by humans?

How do you calculate primary productivity?

Net Primary Productivity (NPP), or the production of plant biomass, is equal to all of the carbon taken up by the vegetation through photosynthesis (called Gross Primary Production or GPP) minus the carbon that is lost to respiration.

Which of the following ecosystem can be included in least productive category?

-Oceans contain lots of nutrients but they have no sufficient sunlight reaching in the deep areas, therefore, oceans have the least productivity among all ecosystems. The average productivity of an ocean ecosystem is about 50 grams of carbon per square meter per year.

Which 3 ecosystems have the highest productivity?

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).

Why is energy transferred 10%?

Energy is transferred along food chains, however, the amount of available energy decreases from one trophic level to the next. The reason for this is that only around 10 per cent of the energy is passed on to the next trophic level. … it is released as heat energy during respiration.

How light makes the ecosystem more productive?

Answer. Light is an essential factor in maintaining plants. The rate of growth and length of time a plant remains active is dependent on the amount of light it receives. Light energy is used in photosynthesis, the plant’s most basic metabolic process.

Which ecosystem has least productivity?

Solution : In oceans, there are lots of nutrients but no sufficient sunlight is available in deep areas hence, oceans have least productivity. Grasslands are less productive ecosystem with annual productivity of 200-100gm/m2. Maximum productivity can be seen in coral reefs followed by estuaries.

What 3 ecosystems have the lowest productivity?

The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.

Which ecosystem has highest productivity?

Tropical rainforestsTropical rainforests show the highest productivity in terrestrial ecosystems.

Which ecosystem is most productive from aquaculture point of view?

Solution : Tropical rainforests have an average net primary productivity (NPP) of 1,500g/m2/yr.

What is true ecosystem?

An ecosystem may be defined as a structural and functional unit of the biosphere comprising living organisms and their non-living environment that interact by means of food chains and chemical cycles resulting in energy flow, biotic diversity and material cycling to form a stable, self supporting system.

How do humans affect net primary productivity?

Human activities such as land use affect the magnitude of global NPP and the flow of biomass through ecosystems, among others through changes in land cover. … Of this amount, 53% came from harvests, 40% from land-use-induced productivity changes, and 7% from human-induced fires.