The Desert Ecosystem

Biotic Factors: Living factors in an ecosystem

Animals-                                          Plants-

Caracal                                             Mojave Yucca
Black-Tailed Jackrabbit               Creosote Bush
Fennec Fox                                      Big Galleta Grass                
Kangaroo Rat                                 Buckhorn Cholla
Meerkat                                          Mormon Tea
Pronghorn                                     Turpentine Broom
Spotted Hyena                              Blackbrush

Abiotic Factors: Non-living factors in an ecosystem

Hot Temperatures
Dry Air
Cloud Cover
Intense Sunlight
Little Rainfall
Small bit of water

Carrying Capacity and Changes in Populations

Carrying capacity is the largest number of individuals of one species that an environment can support. The resources needed for a population to survive include; food, water, shelter, and space.

The desert population changes over time by the extremely hot weather conditions, any vicious animals that are unknown to live there, and also the harmful plants such as cactus, because they are able to injure an animal.
For example, a camel lives in the desert; as well as many other animals. Although, there is a difference in a camel. This different feature has been developed so they could adapt to the desert ecosystem. The special feature adds a hump on the back of a camel. Inside of that hump is fat/tissue. This  is there for camels to survive in the hot hot waterless desert (barely rains).

limiting factors & predator/prey relationships

A limiting factor is any factor or condition that limits the growth of a population in an ecosystem.
For example; Light can be a limiting factor, because without any sunlight all plants would be killed, by the plants dying herbivores will die and because of that omnivores and carnivores will no longer be able to eat and pass away as well. Soon, humans would all die as they plant/animal life will no longer be there to full-fill our health.

A good example of a predator/prey relationship is a snake and a kangaroo rat. A snake would eat a rat in a second.

Energy roles::

The energy roles in my ecosystem are producers, consumers, and decomposers. Such as blackbrush, jackrabbits, and earthworms.

The role of a producer is to provide nutrients to other organisms by making their own food from the sun and its energy.

Food chains and Food Webs

Food webs are more realistic than food chains in my ecosystem, because plenty of my desert animals eat more than one organism/producer. This cannot be shown on a food chain.

Trophic levels & Energy pyramids


The photosynthesis chemical formula is CO2+H2O-----> C6H12O6+O2

The three things needed for photosynthesis are carbon dioxide (CO2), water, & sunlight

The products produced through photosynthesis are glucose and oxygen. You could also say sugar.

Photosynthesis goes through the process in a plants organelle known as chloroplast. Inside of that chloroplast is green pigment that goes by chlorophyll.


turning/bending movement of an organism toward or away from an external stimulus; such as, light, heat, or gravity.

Examples of tropisms in the desert are phototropism, hydrotropisms, etc.
These tropisms help plants survive by providing the sunlight and positions needed to live.

If I removed a population from my food web many of results can occur. Such as; by removing the wood pecker the pack rat population will have more food and increase and the fox would decrease as it wouldn't have as much food to eat and survive.

Role of decomposers

Decomposers are vital to my ecosystem, because they help create the sand/soil/gravel in the desert in order for the plants (biotic factors or producers or autotrophs) to sprout and grow.

A few decomposers in the desert are dung beetles, termites, fungi, yeast, and ants.


The purpose of an adaptation is to help an organism protect itself from any predator preying on them. For example, the namaqua chameleon blends in with whatever color it is on or near. This creates an invisible effect on the chameleon causing any predator, such as a hawk, to over look the chameleon and move on.  

In the desert environment the animals/plants need lots of adaptations. Although, one of the most important animal adaptations- in my opinion- is to have very light fur to keep from death of heat in the extremely hot  temperatures!
The adaptations, according to plants, are just a little bit different. For instance, many plants are provided with water, daily, depending on the moist soil, but in the hot- hot- desert; producers only have dry sand to grow in. The autotrophs adapt to the ability of holding/saving water for very long periods of time.

The affects of placing a desert organism into another ecosystem, after already adapting to its before ecosystem, would be highly rough and hard on the organism. For example; if i placed a snake in the arctic it would probably only be able to survive for about eight minutes or less. The reasons being: one, it has no fur for warmth, two, it is unsure of the arctic animals and how to defend itself, and third of all it is a cold-blooded animal that needs the heat of the sun to warm its body. In the arctic its needs would not be met.

(this snake would eventually die....)

Natural Selection

Natural selection is how nature naturally selects what happens in population. Natural selection is the opposite of selective breeding. When organisms adapt to an environment its called natural selection. Its important, because it keeps everything orderly. The circle of life is caused through natural selection.

A reptile naturally selected to the desert is a lizard as they can us camouflage to hide from predators.  
By using the power to hide the lizard population will increase through their safety and the predator will have one less meal.


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2 years ago

i liked how you organized your information and i love how your pictures go well with what you were saying!

2 years ago

thank you all❤️❤️

2 years ago

I like how the paragraphs have a lot of words to explain things but aren't to wordy. The pictures of the snakes show how they eat their prey, I like it!

2 years ago

Your information is good. Also, it is a snake not an earth worm.

2 years ago

I love your ecosystem and you did an amazing job!!!

2 years ago

I like how you put everything together!

2 years ago

Good job, your tackk is very informative, organized well, and very colorful

2 years ago

I like how you drew your own energy pyramid, it was very good!😀

2 years ago

I really love everything in this tackk :D

2 years ago

Great job Olivia. As I said to Mr.Scott: there's a lot sand(baby rocks).