Savanna biome: Concept of the savanna

len Alfred Ajibola - Thu, 09th January, 2020 @ 08:31 AM

Topics in Biology

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In a food chain, the primary consumers are classified under trophic level  _____.

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Cold blooded animals are referred to as _____.

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All reptiles are vertebrates.

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_____ cells are responsible for the formation of osteoblasts.

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_____ is a bone that constitute the axial skeleton.

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Which of the following is false concerning cartilages and bones?

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  • B. The process of ossification replaces a cartilage to bone
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  • D. Cartilage grows from both ends while bones grow from one of its epiphysis
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A diagram showing the movement of energy through a food chain is called a _____.

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Which of the following is NOT a part of the wrist bones (or carpal bones)?

  • A. Cuboid
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What is a savanna?

The biome savanna (also spelt as savannah) is often referred to as a grassland because of its abundance of grasses. Trees are widely spaced and relatively scarce in the savanna.

Please read on the concept of a biome here.

As an instance, you may have watched the animal documentary program on television. If this is the case, then you may be presented with a biome, let’s say savanna.

You can read on tropical rainforest biome and its importance here.

Within the savanna, you will see grasses, zebras, hyenas, lions, birds, insects and other organisms interacting with one another. Together, they form the savanna ecosystem. This is shown in the image below:

Savanna | Grassland - Len Academy

Please read on an introduction to the ecosystem here.

The savanna makes up about 20% of the lithosphere. You can imagine the lithosphere to be the solid part of the earth. Other parts of the earth are:

An important question to ask concerning the savanna is: 'Why do we have grasses as the dominant plant community in the savanna'?

The answer to the above question can be referenced to the savanna climate which is quite unique to it.

During the summer (dry season) of savanna, its vegetation and animals disappears from a lack of rainfall. The grasses typically dries up during this season due to a lack of water in its soil. Also, some may also be killed from wild fires which can be very common during this dry and windy season. In addition, the rivers and lakes dry up giving rise to the migration and disappearance of animals from the savanna until the rains come again.

You can read on the desert biome here.

The ability to survive the wild fires of the savanna is an inherent characteristics present in the biotic community of the savanna. To this end, the grasses propagate their seeds and spores deep into the soils, birds fly away, certain insects burrow their way deep into the soil during the wild fires while other animals migrate and run for their lives.

The survival of the biotic component of the savanna ecosystem is therefore an important aspect of the savanna.

Please read more on the biotic components of an ecosystem here.

Note: The biotic community of the savanna simply refers to all the living organisms (plant and animal community) present within it.

During the periods of rainy season (which may begin around march), the plant (grasses) and animal community thrives again and the savanna environment becomes completely different from what we had in the dry season. During this time (rainy season), the grasses flourish, the river and lakes reappears and various animals return to graze on them. The grasses are able to regenerate from the harsh dry and windy season due to their nature of propagation, short life cycles and the favorable environment (from the presence of water).

In summary, the nature of savanna's climate marked by a windy dry season and wet rainy season presents the sharp contrast in its vegetation during both seasons.

You can read the explanations on various ecological concepts here.

The savanna can be put into different types based on various factors. These are:

  • Climatic savanna

  • Edaphic savanna

  • Derived savanna

  • Tropical savanna

  • Temperate savanna

  • Sudan savanna

  • Sahel savanna

Please read the details on types of savanna here.

Meanwhile, understand that a grassland biome is sometimes considered as the middle line or transitional biome between the rainforest and the desert biomes respectively.

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Please read the explanations on all the basic characteristics of life here

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A food chain is a diagram that shows the relationship between plants and animals within a habitat on the basis of how they rely on each other for food.

Note: Habitat is a place where an organism live. It is of three types:

  • Terrestrial (Land)
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You can read on food chain here

The term Biology originated from two Greek words. They are:

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