The highest net primary productivity in terrestrial environments occurs in
swamps and marshes and tropical rainforests
; the lowest occurs in deserts.
Which of the following ecosystem has the highest primary productivity?
In 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 has the highest primary productivity Mcq?
Coral reefs ecosystem
has the highest gross primary productivity.
Which ecosystem is highly productive?
Tropical rainforests
show the highest productivity in terrestrial ecosystems.
Which of the ecosystems below has the highest primary productivity?
The aquatic biome with the highest level of primary productivity is
the coral reef biome
with around 2,500 grams of biomass per square meter per year. The biome that includes swamps and marshes and the estuary biome are the other aquatic biomes that have high levels of primary productivity.
What ecosystem has the lowest productivity?
The biomes with the lowest levels of primary productivity include
deserts
, the tundra, the open ocean, and the lakes and streams biome.
What is the gross primary productivity?
Gross primary productivity is
the amount of carbon fixed during photosynthesis by all producers in the ecosystem
. However, a large part of the harnessed energy is used up by the metabolic processes of the producers (respiration).
Which marine ecosystem has the highest net primary productivity?
| A B | Which freshwater ecosystem has the highest average net primary productivity? swamps and marshes, | Which two marine ecosystems have the highest average net primary productivity? coral reefs and algal beds , |
|---|
Which ecosystem has highest biomass?
Forest ecosystem
have the maximum biomass, because it includes organisms of all tropic levels as compared to pond, lake or grassland ecosystem. In forest ecosystems productivity is also high that contributes to maximum biomass.
Which ecosystem produces maximum organic matter?
Tropical rain forests
occur over equatorial/ subequatorial regions with abundant warmth and rainfall. Diversity and productivity are maximum as ! compared to other regions.
What are the 3 most productive ecosystems?
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).
Which is the largest ecosystem on earth?
The World Ocean
is the largest existing ecosystem on our planet. Covering over 71% of the Earth's surface, it's a source of livelihood for over 3 billion people.
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 of these ecosystems has the lowest net primary productivity?
–
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.
What is average net primary productivity?
Net primary productivity, or NPP, is
gross primary productivity minus the rate of energy loss to metabolism and maintenance
. In other words, it's the rate at which energy is stored as biomass by plants or other primary producers and made available to the consumers in the ecosystem.
What are the four factors important for NPP?
Four principal abiotic factors usually limit the amount of NPP on land –
light, water, temperature, and mineral nutrients
– and all these abiotic factors are changing rapidly as a result of human activity, with highly uncertain impli- cations for global and local NPP.
