Pyramids of Power
consumer species may be, whether classified by the type of exploitation of the resource:
Notably in many different species, individuals categories may have different ways of feeding, which in some cases locate at different trophic levels. For example the family Sarcophagidae flies are gathering nectar and other sugary liquids during their adult lives, but as they are queresas (larvae) is typical feeding from corpses (they are among the “worms” that develop during the putrefaction ). Anura (frogs and toads) adults are carnivorous, but their larvae, tadpoles, gnaw stones for algae. In mosquitoes (family Culicidae) females are parasitic hematophagous animals, but males use their mouthparts to feed on sap chopper vegetable.
Also this phenomenon is often manifested indirectly when were counted or counted individuals of each level, but here the exceptions are more frequent and are related to the large differences in size between agencies and with different generation times, leading to pyramids reversed. So in some ecosystems members of a trophic level can be much larger and / or longer life cycle than those dependent on them. It is the case that we see for example in many equatorial forests where primary producers are large trees and are the main phytophagous ants in a case like the smallest number it has the lowest trophic level. Also inverted pyramid effect when the biomass of consecutive members are similar, but the generation time is much shorter in the lower trophic level, a case can occur in aquatic ecosystems where primary producers are cyanobacteria or nanoprotistas.
In this series of steps in which an organism feeds and devoured, energy flows from one trophic level to another. Green plants or other organisms that carry out photosynthesis using solar energy to produce carbohydrates for their own needs. Most of this energy is processed in chemistry and metabolism is lost as heat in breathing. Plants convert energy into biomass remaining on the soil and herbaceous and woody tissue beneath it as root. Finally, this material, which is stored energy is transferred to the second trophic level comprising grazing herbivores, and decomposers that feed on detritus. While most of the energy assimilated into the second trophic level again lost as heat in breathing, a portion is converted into biomass. In each trophic level organisms convert biomass less energy than they receive. Therefore, the more steps occurring between the producer and the final consumer, the energy available is less. Rarely there are more than four links, or five levels in a food web. Eventually, all the energy that flows through trophic levels is lost as heat. The process by which the energy loses its ability to generate useful work is called entropy
Searches related to food web and energy pyramid
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