[Biology Class Notes] on Biotic Factors]]>

Being an occupant of Earth, it is important to learn the biotic factors. They are all about the living parts of the ecosystem. The functionality of the ecosystem is quite interesting. The complex system of cooperation complete the action of every life. This further affects others and their life terms. Therefore, any living thing in the ecosystem is considered biotic factor.

An Insight into the Study of Biotic Factors

Biotic factors like top predators, plant life, soil bacteria and even polluters profoundly shape to form specific organisms that live in an ecosystem. The survival strategies are based on these factors and principles of formation. The biotic definition and appearance of the ecosystem is based on biotic factors with the combination of non-living abiotic factors like geography, sunlight, temperature and chemistry. Also, the ecological niches are further dependent on these factors.

Biotic factor is also known as biotic component and is completely different from an abiotic factor. 

Some Examples of Biotic Factors

In our ecosystem, the biotic factors comprise all living organisms. These organisms interact with each other, and along with abiotic factors within an ecosystem. Some of the examples are:

Terrestrial Ecosystem

• Herbs

• Soil Bacteria

• Mushrooms

• Fungi

• Trees

• Animal and

• Shrubs

Marine Ecosystems

• Plankton

• Corals

• Algae

• Bacteria

• Plants

• Fish

• Sharks

• Jellyfish

Defining the Categories in Detail

If we take a deeper look at the examples of biotic factors, there are three major groups that have been categorised by scientists. These are:

1. Producers – Autotrophs

2. Consumers – Heterotrophs

3. Decomposers – Detritivores

These are defined based on their role and flow of energy upon which the entire ecosystem is based.

Producers – Autotrophs

The word autotroph has been derived from the Greek words – auto meaning self and trophic depicts food. Those organisms fall into this category which can make their food with the help of energy sources and inorganic materials. In our ecosystem, producers play an important role because, without them, life would not exist. Prehistoric life forms on Earth had to learn the process of making fuel and buildings, which are made from non-living materials. The reason behind this, when first life came into existence, there were no other forms to feed on. Therefore, they themselves had to be producers. Producers are further categorized into two groups. These are:

• Photoautotrophs

• Chemoautotrophs

Photoautotrophs

Photoautotrophs are the most common type of producers found on the Earth. They are capable of producing energy from sunlight to fuel various functions of life. Some of the examples are bacteria, green algae, and green plants. Most of them, with the help of chlorophyll, capture photons from the Sun and use them to harness energy. This energy is then packed into a form that can be used by other life forms. Plants, especially which are multicellular, have a special significance in our ecosystem. They are highly complex and very efficient when it comes to converting energy from sunlight and producing fuels for other living organisms. This function forms the bottom of the energy pyramid. 

Chemoautotrophs

These are rarely found in our ecosystems. They survive by obtaining energy from chemicals like sulfur, iron, hydrogen and others especially, which are not commonly found in our environments. However, they still play an important part in our ecosystems due to unusual biochemistry. One of the most common chemoautotrophs is methanogens. These microorganisms make methane, which is a powerful greenhouse that helps in regulating the temperature of our planet. Other chemoautotrophs are able to produce similar forms of chemicals and gases through their unique metabolism. It is still not known whether chemoautotrophs or photoautotrophs were the first on Earth. Photoautotrophs are larger in number, maybe due to the abundance of sunlight rather than chemicals.

Consumers – Heterotrophs 

The word heterotroph has also been derived from the Greek words – hetero meaning other and trophic depicts food. Heterotrophs are responsible for the consumption of other living beings to obtain energy. Heterotrophs can be divided into herbivores, carnivores and omnivores. Heterotrophs, rather than creating their own energy, started evolving when they discovered that autotrophs are a good source of energy. Some of the autotrophs eventually evolved with symbiotic relationships with consumers. A common example includes angiosperm, a plant that produces fruits and nectars to attract animals. This actually helps them in the process of reproduction. In most ecosystems in the energy pyramid, a number of levels are filled with consumers who are minor predators, top predators and herbivores who feed on other organisms.

Decomposers – Detritivores

These are organisms that live on organic compounds of consumers and producers. These are also important to our ecosystem as they are responsible for breaking down the materials left from other livings things to form into simpler forms. These simpler forms are then used by other organisms. Some of the examples of decomposers are fungi, bacteria, flies, worms etc. They can easily break down dead materials or other waste products formed by other life forms. 

Detritivores are quite different from consumers as they do not live on the consumption of other living things. They have the ability to metabolise waste products that are out of consumers’ interests. These include dead animals, rotten fruits and others. Therefore, detritivores break down these dead materials to f
orm simple chemicals that can be further used by heterotrophs to form more energy for the ecosystems as a whole. 

This is the basic principle behind composting. In this process, waste scraps and products of plants and animals are put together to form a pile to let thrive the decomposers like worms, bacteria and flies. The waste products are turned into rich fertilisers by these decomposers to use in the gardens. Therefore, decomposers help in growing healthier and bigger trees. The breaking down process from decomposers has a special significance in our ecosystem. In the energy pyramid, decomposers form the link between the bottom and other levels. Most of the decomposers depend on raw materials and energy from dead plants, top carnivores, lesser carnivores, and herbivores. By breaking down, a form is produced, which is then used by the producers in the ecosystem to harness sunlight. This forms an entire energy cycle on our Earth.    

Benefits of Learning the Biotic Factors – Introduction, Examples and 3 Major Groups

The biotic factors – introduction, examples and 3 major groups will definitely be a beneficial study resource for you. To ace your biology final exam, you will need reliable study material. With this article, you can cover some crucial concepts and ensure significant marks in your final exam. The topic provides you with a deep insight into the ecosystem and the different factors that affect it. Here are some of the benefits:  

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Conclusion

Humans are one of the most responsible organisms which have the ability to control other biotic factors affecting. As they are omnivores, the food chain can be easily adjusted as per the requirement on Earth.