#ecosys5 Made by Aaron Pryor

Savanna Biotic

Biotic Factors: zebra, giraffe, lion, crocodile, elephant, emu, Jackalberry Tree, Whistling Thorn, and Manketti Tree.

Savanna Abiotic

Weather: At winter the weather is dry and not cold. At summer the air is moist and it is humid.

Climate: The savanna is normally warm year round. What makes them different than a desert is that they have more vegetation.

Water: It is scarce during the winter but in an abundance in the summer.

Step 3. Carrying Capacity

Carrying capacity is how many animals the habitat can support. Animals need water, food, and shelter to survive.

Step 4. Limiting Factors

Some things make it harder to get food, shelter, or water. Disasters like tornado's and floods make it harder to survive. A flood destroys food and shelter. A drought makes it where there is no water. A famine makes it where there is no food. These are limiting factors for emus, giraffes, and zebras.

Step 5 Energy Roles

The Jackalberry Tree is one of the many producers in the savanna. That means it makes its own food. Giraffes eat the leaves from tall trees. They are herbivores or, plant eaters. Termites are decomposers. They break down waste for the soil. Vultures are scavengers. They eat any meat that another animal has killed.

Step 6 Food Chains and Food Webs

Food webs are a superior way of showing how animals eat each other than food chains. Food webs show way more possibilities than food chains.

Say I removed the giraffe. There would be more grass and plants for other animals. Then there would be an abundance of termites, aardvarks, gazelles, and other animals. Then there would be less food and they would all die out. Since they would all die out then the lion and hyena wouldn't have food. Then they would die out. You need to keep every animal for perfect balance.

Step 7 Trophic Levels and Energy Pyramids

The reason the shape is a pyramid is because the level below it is eaten by the level above it. The energy flows from the bottom to the top. There are more producers than than top carnivores.

Step 8 Photosynthesis

Carbon dioxide and water are converted into glucose and oxygen with the suns energy. Photosynthesis takes place in the chloroplast of plant cells. The suns radiant energy converts into chemical energy.

Step 9 Tropism

Tropism is when a plant turns towards an external stimulus. Some examples are acacia trees with the negative and positive geotropism. The positive tropism pulls the roots down into the ground while negative tropism lets the leaves go skyward.

These tropisms help the plants thrive because the roots go downward toward the water to absorb it while the leaves takes water and waters the entire tree.

Step 10 Decomposers

Decomposers are very vital to the ecosystem. They break down waste and turn it into minerals for the producers of the ecosystem. If there were no decomposers then the producers wouldn't get the nutrients they need. Some examples are fungi and earthworms.

Step 11 Adaptations

Adaptations are very important. They help animals survive in the climate that they live in. Like how the African Wild Dog has long legs to chase its prey, or how the Black Mamba has very deadly venom and high flexibility. Plants and animals need some way to protect itself from the extreme winds such as sandstorms.

If I took an African Wild Dog and put it into the jungle, then it wouldn't be able to chase it's prey as easily. The heavy greenery would block it's path.

Step 12 Natural Selection

Natural selection is the gradual process of animals adapting over time. It is important for an ecosystem to have natural selection because the animals always need to change for survival.

The thicker and darker a lions mane is, the more a lioness wants to mate with him. The only reason the lions has the mane is to attract mates. The darker manes are also more aggressive and protective.This means that they will protect their cubs from predators. The population increases because of less cubs dying.

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