Material cycle in the forest explained step by step

This explains the carbon cycle

• You know about green plants that they photosynthesize. They are therefore producers and, within the material cycle in the forest, use solar energy to produce glucose from the carbon dioxide in the air and water. Note that energy-rich substances are formed from low-energy substances.
• Green plants not only produce glucose, but also the oxygen that you breathe every day. Our air contains 21% oxygen but only 0.035 carbon dioxide.
• The glucose produced by the forest in the material cycle is the basis for the production of other vital organic substances. Remember that these substances include protein, fat, starch and cellulose.
• As you know, plants breath cellularly in order to exist, releasing carbon dioxide into the atmosphere in the process. For this respiration they need part of the glucose and also oxygen, which was produced in the material cycle in the forest. For you, this means that not all of the sugar is converted into other organic substances. In addition, the plants consume less oxygen during cell respiration than they produce during photosynthesis. Green plants are autotrophic because they can produce organic substances that they need on their own.
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• The substances produced by the plants through the material cycle in the forest are consumed by the consumers. Remember that they especially include the animals of the forest. Make sure that a food chain is formed, which means that a consumer has the organic substances of the preceding food limb are required to maintain cell respiration obtain. Consumers are heterotrophic because they cannot produce high-energy, organic substances themselves.


Declaration of the material cycle

The material cycle is an integral part of all ecosystems. Already in school ...

• The material cycle in the forest also includes the destructors, which decompose excretions from plants and animals as well as dead living beings. Note that the destructors use oxygen to break down the substances into minerals, water and carbon dioxide.
• As you can see, the carbon dioxide is present in a constant material cycle from the forest. It is either in the atmosphere or in a bound form in the organism.

Explanation of the energy cycle in the forest

• To the cycle of energy To understand the forest, you need to know the terms food pyramid and biomass.
• By the food pyramid you understand individual food levels that are formed by producers and consumers in the material cycle of the forest. In order to be able to create the food pyramid, you have to determine the biomass of the individual food levels in the material cycle of the forest.
• By biomass you understand the mass of the living beings on a level. Note that the biomass of the producers, i.e. the plants, is greatest, as it is responsible for the Photosynthesis uses a small part of the energy in sunlight to build organic substances to use. The energy in the material cycle from the forest is converted into chemically bound energy and, apart from a small part, made available to consumers for cellular respiration.
• The biomass of the consumers is lower, is only 10 - 20% of the food consumed and is distributed between first and second consumers. As you can imagine, the biomass of the secondary consumer is much lower than that of the primary consumer. This is due to the fact that herbivores can only use the digestible part of the plants, so that the excreted parts have to be broken down by the destructors. Note that there is an energy depreciation, as the absorbed energy is completely used by the destructors for the decomposition and cell respiration. Therefore, energy, especially solar energy, has to be constantly replenished in order to maintain the material cycle in the forest.