Desert Ecosytem Essay

1679 words - 7 pages

1. A. Four Producers: Date Palms, Thorn Acacia, Olive Trees, Citrullus colocynthis (Desert Gourd)
B. Three Herbivores: Dromedary Camel, Dama Gazelle, and Desert Beetle
C. Two Omnivores: Fennec Fox and Rüppell's fox
D. Two Carnivores: Deathstalker Scorpion and Desert Eagle Owl
E. Two Decomposers: Bacteria and Fungi
F. Two Scavengers: Spotted Hyena and Sahara Desert Ants

The first organism is an herbivore and is called the Dromedary Camel. Possible current limiting factors are that there might too much rain in the desert or too little or none at all. Climate and precipitation are abiotic factors. Too little, none, or too much rain could be caused by global warming since there are many droughts, too much snowfalls, rainfalls, etcetera as the years progress and global warming gets worse and worse. This would be a decrease of Dromedary Camels if there is little or no rain. It would be a increase if there is too much rain.
The second organism is a carnivore and is called the Deathstalker Scorpion. Possible current limiting factors are too many or too little crickets which is their food that they eat. This is a biotic limiting factor since this talks about prey population. Changes that could affect this limiting factor is that the crickets eat too much and overpopulate and then the scorpions eat them and then they multiply. Or it could be the opposite. The crickets may not find anything to eat and the number decreases and since the scorpions mainly eat crickets they will decrease as well.

2. The normal amount of sun per day in the Sahara Desert is 12 hours. The heat in the winter is averaged to be 86°F. In summer 123°F. The hottest it has ever been is 136°F and the coldest was 13°F. The soil types are silt particles spread over the dunes and yermosol. The Sahara Desert’s soil quality is poor as the soil is low in organic matter. The average rainfall every year is usually less than 2.5 centimeters. A plant adaptation is the cactus. The cactus has spines that can collect the dew and the dew will fall onto the plant base.

4. My predator/prey relationship is between the Spotted Hyena and the Dama Gazelle. The predator is the Spotted Hyena and the prey is the Dama Gazelle. The Spotted Hyena is best known for it’s razor sharp teeth. They can easily crush and consume bones which is highly effective for the Spotted Hyena. The Dama Gazelle however can run very fast which is its adaptation that helps it avoid being eaten. A newborn would be able to run as fast as an adult which can sometimes help outrun the Spotted Hyena.

5. The organism I chose is the Dung Beetle. On a food chain the Dung Beetle would be a scavenger. It eats decaying matter and dung. The Dung Beetle fits into its niche by surviving on dung and not requiring water in order to stay alive. They also help improve nutrient recycling and soil structure. The Dung Beetle protects itself from predators and the elements by living inside the dung.

6. The Egyptian Tortoise or also known as...

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