Biotic Factors (Living Organisms)
1. Animals (Lion, Zebra, Cheetah, Crocodile, Giraffe)
2. Plants (Jackalberry Tree, Whistling Thorn, Manketti Tree)
Abiotic Factors (Non-Living Organisms)
1. Weather- Annual rainfall of 10-30 inches. There is hardly any rain from December to February.
2. Climate- Typically 68-8http://www.blueplanetbiomes.org/savanna_climate.htm6 degrees F year round. Warm temperature year round.
3. Water- Scarce during the winter, plentiful during the summer.
Carrying Capacity- the maximum population size an environment can hold; the resources needed for an organism to survive are: Food, Habitat, and Water
In the Savanna, water is scarce during the winter, so if the population of all the animals in the Savanna want water, then whoever gets to the water first gets it and the other animals die out.
Lion and Warthog- African lions are known for hunting warthogs because they are sometimes easy to catch. If a drought were to occur in the savanna, the warthogs might die out leaving it for the lions to find something else to prey on.
Producer- an autotrophic organism that can be consumed by other organisms Ex: Senegal Gum Acacia, Bermuda Grass, Manketti Tree, Elephant Grass
Consumer- an organism that consumes other organisms
Consumers that only eat plants
Consumers that only eat meat
Consumers that eat both plants and animals
Consumers that feed on refuse or carrion
Food Chains and Food Webs
Food chains are just the flow of one organism to the next. Food webs are multiple food chains interacting.
If you took away the harvester ant, then the population of the pangolin would eventually die out because that's what they mainly eat.
Trophic Levels and Energy Pyramids
The use of a pyramid shows how there is less and less energy as the trophic levels advance. Producers are at the bottom because they receive energy directly from the sun. Top predators are at the top be cause they receive the least amount of energy.
Chemical Equation- 6CO2+6H2O
Reactants for photosynthesis- carbon dioxide and water
Products of photosynthesis- oxygen and glucose
Photosynthesis takes place in chloroplasts
The energy transformation in photosynthesis is radiant energy to chemical energy
Tropism- when a plant grows toward or away from stimuli Ex: Phototropism(movement towards the sunlight), Geotropism(movement towards gravity), Hydrotropism(movement in response to water), Thigmotropism(movement in response to touch)
The Role of Decomposers
Decomposers are vital to the savanna because without them there would be a lot of dead plants and animals everywhere.
Decomposers in the savanna- Earthworms, Insects, Bacteria, Fungi
Adaptations are important because they help organisms survive in and adapt to their environment . For example, lions blend in with the tall grass making it easier to catch their prey.
Giraffes have long necks to reach the leaves out of the trees. Lions blend in with the grass to catch their prey.
If you put a lion in an arctic ecosystem, it would freeze because its coat of fur isn't very thick.
Natural selection- when organisms adapt to their environment so that they can survive
In the savanna, there are giraffes with short necks and giraffes with long necks. If something were to happen that made all the low-lying shrubs to die out, the giraffes with short necks would not get enough food. After a few generations, all of the giraffes with short necks would no longer exist, they would all have long necks.