African Savannah Biome Done By Karan Kaul and Laban Christenson
Introduction:
A savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rain forest and desert biome. Not enough rain falls on a savanna to support forests. Savannas are also known as tropical grasslands. They are found in a wide band on either side of the equator on the edges of tropical rain forests.

Map of Savannahs:

external image map-world-grasslands-580.jpg


African Savannah:
The African Savannah is located in Africa. Its terrain is very rocky and grassy. The Savanna biome has a wet/dry climate. In the savanna climate there is a distinct dry season, which is in the winter. Savannas get all their rain in the summer months. During the distinct dry season of a savanna, most of the plants shrivel up and die. Some rivers and streams dry up. Most of the animals migrate to find food.
The savanna climate has a temperature range of 68° to 86° F (20° - 30° C). In the winter, it is usually about 68° to 78° F (20° - 25° C). In the summer the temperature ranges from 78° to 86° F (25° - 30° C). In a Savanna the temperature does not change a lot (Hyde).

Picture of African Savannah:

external image Savanna.jpg



Abiotic related to Biotic:
Some Abiotic factors in our ecosystem are sunlight, soil, temperature, water. These abiotic factors are related to biotic factors in our biome like grass, trees, and animals. Some ways how these abiotic factors like sunlight and water are needed in the ecosystem for biotic factors like giraffes and plants because sunlight and water are neccesity for plants, so that the plants will grow and the giraffe can eat them. Also, the giraffe can get water from a watering hole, because water is essential for all living things. Another reason why abiotic factors like temperature are related to biotic factors is because temperature plays a big role in an animals niche.

Video of a Lion Killing a Hyena:

Awesome Footage Of Lion Attacking Hyenas! - Free videos are just a click away




How Does Nitrates in fertilizer affect the African Savannah?
- What are Nitrates?
- How would nitrates in fertilizer benefit the African Savannah?
- Are nitrates necessary in fertilizer to affect the African Savannah?
- Would the nitrates in fertilizer affect offspring?
- How do nitrates specifically affect the bodies of organisms?
Nitrates are natural inorganic ions that are part of the nitrogen cycle. Decomposed wastes that contain organic nitrogen that turns into ammonia is oxidized into nitrate Nitrate is a compound that is normally found in ground water and surface waters (Nitrate). Nitrates benefit our biome because they allow the producers to grow very abundantly. Producers usually have to get their nitrogen from nitrogen fixing bacteria in legumes. With the nitrates in the fertilizer plants can get much more nitrogen and grow very big and spread all over. This provides lots of food for consumers in our biome(Ansar). Nitrates are necessarily not necessary in fertilizer because there are other types of fertilizer that could be used in our biome that do not contain nitrates. Nitrates can still affect our biome without fertilizer though, because nitrates are found in many places, like ground water. Nitrates in fertilizer will affect offspring because they will not have any non contaminated drinking water. This will affect the offspring by not giving them pure water and because of this, they will not grow and they would probably die from not having enough nutrients. Also, most of the offspring will not even be born because the nitrates in the water force the babies to be aborted. When it rains, the nitrates in the fertilizer will wash into the drinking water of the animals, in our biome. To much nitrates are not good for animals, especially baby animals. Some bad side effects are "abdominal pain, diarrhea, muscular weakness or poor coordination. Affected animals will have blood that is a chocolate-brown color. Pregnant animals may abort within a few days"(Self).





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Original Ecosystem Compared to Disrupted Ecosystem:
If our potential disruption did affect our ecosystem, there would be many differences between the two the original and disrupted ecosystem. In our pictures of our ecosystem, you can see that with the disruption of nitrates in fertilizer, the number of producers would increase while the population of the 1st level consumers would decrease. Also, the 2nd level consumer would be completely gone.




Works Cited:

Ansar, A. "The Effect of Nitrate and Phosphate on the MacroinbertebratePopulations in Different Streams." tjhsst. N.p., Jan. 2006. Web. 22 Mar.2010. <http://www.tjhsst.edu/~ibet/0506/science/tbrobst.htm>.

Hyde, Elisabeth Benders. "Blue Planet Biome." Blue Planet Biome. N.p., 7 Nov.2006. Web. 10 Mar. 2010.<http://www.blueplanetbiomes.org/index.htm>.


Nitrate/Nitrite Toxicity." Agency For Toxic Substances and Disease Registry.USA Gov, n.d. Web. 17 Mar. 2010. <http://www.atsdr.cdc.gov/csem/nitrate/no3cover.html>.

Self, J.R. "Nitrates in Drinking Water." Extension. Colorado State University, Oct. 10/08. Web. 18 Mar. 2010. <http://www.ext.colostate.edu/PUBS/crops/ 00517.html>.