Quick Answer: What 3 Ecosystems Have The Lowest Productivity?

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..

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 does temperature affect primary productivity?

The effect of temperature change is generally positive to increase the productivity by enhancing the photosynthesis as long as the temperature is in a range of optimum level. When temperature exceeds the optimum level, it will increase the rate of respiration causing the NPP continuously declined.

Which of the following aquatic ecosystems has very little primary productivity?

So, the correct option is “rivers”.

Which of the following is an incomplete ecosystem?

Cave ecosystem is incomplete because it does not have all the biotic and abiotic (specially) components.

Which of the following ecosystem has very little primary productivity?

Thus, the correct answer is ‘River. ‘

Which ecosystem has the highest productivity?

Tropical rainforestsTropical rainforests show the highest productivity in terrestrial ecosystems.

Are oceans productive?

Productivity fuels life in the ocean, drives its chemical cycles, and lowers atmospheric carbon dioxide. Nutrient uptake and export interact with circulation to yield distinct ocean regimes.

What increases net primary 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.

How is it that satellites can detect differences in primary productivity on Earth?

How is it that satellites can detect differences in primary productivity on Earth? Satellites detect differences by comparing the wavelengths of light captured and reflected by photoautotrophs to the amount of light reaching different ecosystems. … Oceans have the largest area of all the ecosystems on Earth.

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.

Which ecosystem has highest GPP?

coral reefsIn the aquatic ecosystem, coral reefs show the highest gross primary productivity. Large numbers of aquatic phototrophs and phytoplankton contribute to the productivity of the ecosystem.

Which ecosystem is known as giant permanent pond?

lake ecosystemWhich ecosystem is known as giant permanent pond? Explanation: A lake ecosystem functions like a giant permanent pond. A large amount of its plant material is algae.

Which three continental ecosystems are least productive?

The most productive ecosystems are temperate and tropical forests, and the least productive are deserts and tundras.

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.

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).

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?

Which lake has minimum productivity?

Oligotrophic lakesOligotrophic lakes: These have low primary productivity, and low biomass associated with low concentrations of nitrogen and phosphorous (nutrients). They tend to be saturated with oxygen.