Multiple Choice
Which of the following is a possible cause for a decrease in ecosystem primary productivity?
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52. Ecosystems
Factors Impacting Primary Production
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In ecology, which term refers to the total rate of photosynthesis in a given area (before subtracting respiration)?
A
Net primary productivity (NPP)
B
Community respiration (R)
C
Secondary productivity
D
Gross primary productivity (GPP)
Verified step by step guidance1
Understand that photosynthesis in an ecosystem involves the conversion of light energy into chemical energy by plants and other autotrophs.
Recognize that Gross Primary Productivity (GPP) is the total amount of organic material produced by photosynthesis in a given area and time, before accounting for energy used in respiration.
Know that Net Primary Productivity (NPP) is the energy remaining after subtracting the energy used by plants for respiration from GPP, representing the energy available to consumers.
Identify that Community Respiration (R) refers to the total respiration by all organisms in the community, which consumes some of the energy produced.
Understand that Secondary Productivity refers to the generation of biomass by heterotrophic organisms (consumers) using the energy derived from primary producers.
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