The Desert


Biotic Factors

Animals: Mice, Rabbits, Squirrels, Antelope, Lizards, Rattlesnakes, Scorpions, Hawk, Fox, worms, beetles

plants: Wild Flowers, Succulents, desert grasses, cacti, Yucca plants, prickly pears, turpentine bush

Abiotic Factors

little water, Very hot, Lots of sunlight, big temperature changes in a 24 hour period, soil(sand or clay)

Carrying Capacity

The maximum,equilibrium number of organisms of particular species that can be supported indefinitely in a given environment

Resources needed for a population to survive are water, food, shelter, space.  

Limiting Factors

A factor present in a environment that controls a process particularly the growth, abundance or distribution of a population of organisms in a ecosystem. examples: weather, water, food, temperature   

Hawk-> rat and if you take away what they eat like the prey then the predator is going to die then who ever eat the predator is going to die too and so on.

Energy Roles

Decomposers: An organism that primarily feeds on dead organisms or the waste from living organisms

Consumers: any organism that can’t make its own food

Producers: Photosynthesizing organisms

The producer gets its energy from the sun then the consumer gets its energy from the producer which eats it and so on and the sun is the most important energy source in a food chain.

Because a food chain shows only one consumer per producer.  A food web shows that one consumer can have multiple producers and other consumers that they eat.

If you removed one population from the food web it could lead to the over consumption of another population and possibly the extinction.

Energy Pyramid

It is a pyramid shape because the majority of the energy lies with the producers since they receive their energy from the sun.  The sun holds and transfers the most energy.

The amount of energy available to one trophic level is limited by the amount stored by the level below. Because energy is lost in the transfer from one level to the next, there is successively less total energy as you move up trophic levels. In general, we would expect that higher trophic levels would have less total biomass than those below, because less energy is available to them.



CO2=Carbon Dioxide  H2O=Water   C6,H12,O6=Sugars   O2=Oxygen 


The turning of all or part of an organism in a particular direction in response to an external stimulus

Ex: cacti

It helps by giving off food to the other plants and helps keep the organisms alive by give them water to drink.

If there were no decomposers in the desert (or any biome) dead
animals and plants would simply remain untouched and all the
substances that make up their bodies would not be recycled.

Decomposers are recyclers of life materials, returning them to the system for use by living organisms. you can easily expand this in an interesting way to show your understanding.

A common misconception is that the main decomposers in deserts are Dung beetle and termites..... Dung beetles and termites are detritivores which means they feed on dead organic matter (like "dung"). The main decomposers in a desert ecosystem as in any are bacteria and fungi.


All organisms have adaptation- traits or characteristics-that help them to survive and reproduce in a particular habitat.

There are three basic methods plants and animals use to live in the desert: Expire, Evade and endure

Top endure the harsh desert conditions are many, but can be organized as follows: ways to endure lack of water: store water, conserve water and tolerate dehydration

Ways to endure high temperatures: Reduce heat input, dissipate heat and tolerate hyperthermia

I think putting a different organism into a different environment can cause one of two thing to occur.  1. The organism can adapt to its new environment(evolution).  2.  The organism could die off and become extinct.

Natural Selection

the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations.

The brown and the white rabbits. The process is when the population change and its brown then the white will die and if it changed again into white population then the brown will die. It change by how the population change and how many rabbits the were covered to how many were not covered.

Comment Stream

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2 years ago

not very discriptive

2 years ago

Just combine animals and plants

2 years ago

thanks zachary,alejandro,mason,emily and matthew

2 years ago

ya combine animals and plants

2 years ago

Try and be a little more specific with the biotic factors and cut down on the number of pictures.

2 years ago

I like your format and pictures.

2 years ago

thanks jacob,gunnip and sahar

2 years ago

I like the pictures and information

2 years ago

Like the energy pyramid

2 years ago

Thanks Lindsey and Ellen