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Primary production is the production of chemical energy in organic compounds by living organisms. The main source of this energy is sunlight but a minute fraction of primary production is driven by lithotrophic organisms using the chemical energy of inorganic molecules.
Land plants, or autotrophs, are terrestrial primary producers: organisms that manufacture, through photosynthesis, new organic molecules such as carbohydrates and lipids from raw inorganic...
Jan 1, 2021 · Primary production is the storage of energy through the formation of organic matter from inorganic carbon compounds. Primary production is carried out by autotrophic organisms. The term autotrophic derives from the Greek words autos, meaning self, and trophikos, meaning pertaining to food.
- Michael L. Pace, Gary M. Lovett
- 2012
Gross primary productivity, or GPP, is the rate at which solar energy is captured in sugar molecules during photosynthesis (energy captured per unit area per unit time). Producers such as plants use some of this energy for metabolism/cellular respiration and some for growth (building tissues).
- My name is Jannah, my question is are the decomposer's the main part of the food chain/ the food web...@Jannah Hello, Hope you're having a great day! here is a close answer to what you were questioning.... Actually, in some cases, They may be conside...
- Why is productivity an important factor when considering the stability of an ecosystem?Because without productivity there is no consumerism. :D The stability of the ecosystem lies in the fact that productivity and consumerism constant...
- Hi! I need some help reconciling the reasons why energy is "lost" between trophic levels. In paragra...Okay so basically, imagine a human and you're eating food. Not all of that energy gets put into your biomass, some of it goes to maintaining homeos...
- Hello! Where do decomposers fit in on the energy pyramid, and what percent of the energy of which le...Decomposers are placed in *separate trophic level*. A separate trophic level, the decomposers or transformers, consists of organisms such as bacter...
- In the graphics, particularly the energy, biomass, and number pyramids, why do the authors feel the ...*Good question* Occasionally, terms such as 'secondary producers' and 'tertiary producers' are used. Animals that consume plants are considered sec...
- If energy level decreased as the trophic level increases, doesn't this mean plants and other primary...*Total* energy decreases, but as you noted energy density tends to increase. The difference is because organisms in lower trophic are typically muc...
- Is there a way to increase/maximize the transfer efficiency of energy between trophic levels or in g...In general, only about 10% of energy is transferred from one trophic level to the next, and this number can vary from 5-20% depending on the ecosys...
- So I was wondering when you find NPP, you do GPP - Respiration Loss, right? But I now I get the resp...First of all, find the real value based on percentage. If it says respiration loss is 20%, you find what 20% of NPP 0.012grams, right? After you ge...
primary productivity, in ecology, the rate at which energy is converted to organic substances by photosynthetic producers (photoautotrophs), which obtain energy and nutrients by harnessing sunlight, and chemosynthetic producers (chemoautotrophs), which obtain chemical energy through oxidation.
- The Editors of Encyclopaedia Britannica
Primary productivity refers to the rate at which autotrophs convert carbon dioxide into organic material during photosynthesis, and the total primary production within an ecosystem is the gross primary production, or GPP.
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