Why is net primary production a more useful measurement to an ecosystem?

Why is net primary production (NPP) a more useful measurement to an ecosystem ecologist than gross primary production (GPP)? A) NPP can be expressed in energy/unit of area/unit of time. … NPP can be expressed in terms of carbon fixed by photosynthesis for an entire ecosystem.

Why is the net primary production a more useful measurement to an ecosystem ecology than the gross primary productivity?

The best answer appears to be C because NPP is indeed the “excess” amount of photosynthetic output after some photosynthate is used for maintenance. Excess photosynthetic output may be anabolized sugars stored as starch, which heterotrophic organisms can consume.

Why would it be useful to know the primary productivity of an ecosystem?

The productivity of the primary producers is especially important in any ecosystem because these organisms bring energy to other living organisms by photoautotrophy or chemoautotrophy. … The rate at which photosynthetic primary producers incorporate energy from the sun is called gross primary productivity.

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What does net primary production NPP tell us about an ecosystem?

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.

Why is net primary productivity important to humans?

The human appropriation of net primary production (HANPP) provides a useful measure of human intervention into the biosphere. The productive capacity of land is appropriated by harvesting or burning biomass and by converting natural ecosystems to managed lands with lower productivity.

What does net primary production mean?

In the process of making their own food, plants also provide the oxygen we need to breathe. … They show net primary productivity, which is how much carbon dioxide vegetation takes in during photosynthesis minus how much carbon dioxide the plants release during respiration (metabolizing sugars and starches for energy).

How does NPP increase in terrestrial ecosystem?

In general, terrestrial ecosystem net primary production increases with increasing: moisture availability as measured by evapotranspiration. length of growing season. temperature measured as mean annual temperature.

Why do scientists more commonly Analyze net primary productivity compared with gross primary productivity?

31. Why do scientists more commonly analyze net primary productivity compared with gross primary productivity? Net primary productivity incorporates features like production at present and next trophic levels, whereas gross primary productivity does not.

Which data is most useful to measure primary productivity in terrestrial ecosystems?

In terrestrial ecosystems, mass of carbon per unit area per year (g C m2 yr1) is most often used as the unit of measurement.

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What does primary productivity measure what does it tell you about an ecosystem?

The level of primary productivity in an ecosystem sets the energy budget. In other words, primary productivity determines the maximum amount of energy available to all the higher trophic levels in an ecosystem. … An ecosystem’s primary productivity is the rate at which the producers build biomass.

Which of the following best describes the net primary productivity of an ecosystem?

Which of the following best describes the net primary productivity of an ecosystem? … Net primary productivity is the amount of energy lost through respiration by producers subtracted from the gross primary productivity of an ecosystem.

Which do you think has more of an influence in shaping an ecosystem GPP or NPP explain how Why?

Gross Primary Productivity is the total energy made to be used by plants, the Net Primary Productivity is this energy minus energy lost in respiration. Net Primary Productivity has more of an influence, because it is the amount of actual consumable energy.

Where is net primary productivity NPP most prevalent and why?

About 40 to 85 percent of gross primary productivity is not used during respiration and becomes net primary productivity. The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.