The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.
Which ecosystem has lowest net primary production per sqm?
The rate at which plants and other photosynthetic creatures generate organic substances in an ecosystem is referred to as primary productivity. Deserts, tundra, the open ocean, and the lakes and streams biome all have the lowest amounts of primary productivity. As a result, the right answer is ‘Open Ocean.
Which of the following has the lowest average net primary productivity?
The correct answer is Temperate grasslands. Temperate grasslands are characterized as having grasses as the dominant vegetation. Trees and large shrubs are absent, therefore it has the lowest mean net productivity in the category of grasslands.
Which of the following ecosystem has the lowest productivity per square meter per year?
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 …
Which biome has the lowest primary productivity per unit area?
So, depending on the amount of rainfall and nutrient distribution within a desert, certain areas may cause a larger GPP and NPP than others. Overall, the productivity of deserts is the lowest of all the biomes.
What is GPP and NPP?
Gross primary production (GPP) is the total rate at which material is produced and net primary production (NPP) is the rate at which material is accumulated in excess of respiration. In other words, NPP is GPP minus respiration. … Net primary production is directly related to ecosystem conditions.
Why do open oceans have low net primary productivity?
Open ocean is low in productivity? The average NPP of the ocean is so low because the ocean’s volume (mostly open space) in comparison to the amount of producers is massive.
What three ecosystems have 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.
Which marine ecosystem has the lowest average primary productivity?
Productivity in the arctic ocean is usually very low, since cold restricts enzyme activity even though all other requirements for photosynthesis may be in excess.
Which of the following ecosystem has the highest average net primary productivity?
AP Chapter 54 – Ecosystem Ecology (detailed)
|Which terrestrial ecosystem has the highest average net primary productivity?||tropical rain forests.,|
|Which freshwater ecosystem has the highest average net primary productivity?||swamps and marshes,|
Which is the smallest ecosystem?
The Temperate Grassland is the smallest ecosystem in the world as well as on earth. The area of this grassland occupied by Tundra.
Which of of the following ecosystem has the highest net primary productivity per square meter?
In terms of net primary productivity tropical rain forest is at the top followed by coral reef, easturies and desert and ocean.
Which of these ecosystems has the highest net primary productivity per square meter?
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).