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Above is a diagram of an energy pyramid.  An energy pyramid could be constructed for any ecosystem on earth.  If we were to create an energy pyramid for Missouri, address the following questions:

1.  List 3 organisms which would fit in each of the four parts of a pyramid representing an ecosystem in Missouri.
         a)   Producers
         b)   Primary (First-order consumers)
         c)   Secondary (second-order consumers)
         d)  Tertiary (Third-order consumers)

2.  Explain why the energy obtained by the producers at the base of the pyramid becomes lower as you move up the levels.

3.  Describe why the population size of organisms becomes smaller as we move from producers to tertiary consumers.  

 


Comments

Fierce
01/17/2011 10:05am

1.3 producers are acorns, grass,& leaves.3 primary consumers are deer, cows,& caterpillars. 3 secondary consumers are humans, cyotes,& birds.3 third-order consumers are mushrooms, vultures,& bugs.

2.Energy is Obtained as you go up to higher levels, it is used to help keep that organism alive.

3.The population size is different as it becomes smaller because there is not as much energy when animals use up all the energy to keep them alive.

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Amazlingly Awsome Pants
01/17/2011 10:06am

Producers-Grass, acorns and Black Berries.
Primary-Deer, Squirrles and Cows.
Secondary- Humans, Wolves and Coyote.
Tertiary-Worm, Buzzerds and Vultures.
2. As they move up the pyramid more energy is used so less is taken in.
3. There is less things to eat as you move up to the tertiary consumers.

Reply
The Mafia People
01/17/2011 10:06am

Producers, Oak trees, apples, stawberys. Primary, deer, mice, catipliers. Seccondary, cyotes, bobcats, humans. Tertiary, eagles, buzerds, mountion lions. The reason the energy lowers after each level is because it take energy to live and when animals eat it there is less to use. The reason is because there are less energy as u move up the pyramind. That is why there is less organisms as you move up levels.

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Science Detectives
01/17/2011 10:07am

1. Producers: Grass, Oak Tree, Clover/ 1st order consumers: Squirrel, Rabbit, Deer/ 2nd order consumers: Raccoon, Buzzard, Hawk/ 3rd order consumers: Mountain Lion, Coyote, and Wolf
2. As you move up the levels of the pyramid, each level gets smaller because they all have to use energy to make their energy. Some energy is lost in the making of energy, so the top of the pyramid is the smallest because it has gone through the most passing on to get there. So, there is less energy at the top than any of the other levels of the pyramid.
3. Populations of the pyramid get smaller as we “climb the ladder” so to say because the less energy there is; the smaller the population is going to be. This is because the 3rd order consumers have to eat a lot of the 2nd order consumers to support their self, therefore draining the 2nd order consumer’s population. It is the same way with the 1st order consumers, as well as the producers.

Reply
Slam Dunks
01/17/2011 11:33am

1.)
A.) producers-oak trees, wheat, blackberries
B.) primary consumers- squirrels, cows, rabbits
C.) secondary consumers- foxes, coyotes, owls
D.) tertiary consumers- vultures, mountain lions, bacteria and fungi

2.) Energy obtained by the producers gets lower as you move up levels because energy isn't recycled. As a primary consumer eats a producer energy is lost. As a seconary consumer eats a primary cosumer more energy is lost. By the time a tertiary consumer eats a secondary consumer there isn't hardly any energy left.

3.) Population size decrease because energy is lost. There may be lots of producers but because energy is lost during the process of eating they only feed a small amount of primary consumers. Ten there is less energy for the secondary consumers. By the time the tertiary consumers eat there is only enough energy for about 1 or 2 animals.

Reply
homie hitters
01/19/2011 8:54am

The three organisms for the Missouri food chain
Producers- Oak trees, grasses, and garden vegetables
Primary- Deer, cow, and rabbits
Secondary- coyotes, foxes, and bobcats
Tertiary- buzzard, hawk, and vultures

2. The reason why that happens is because all the animals use the energy they get from the things they eat to survive. So when that animal gets eaten it don’t give as much energy because it had already used some of the energy.
3. They start to thin out as they go from organism to organism because they don’t get as much energy from the animal they eat because the animals eat the others and don’t get as much energy because every animal or thing has to burn energy.

Reply
Mario and Luigi Gang
01/19/2011 9:08am

Producers-oak trees, evergreen trees,berry bushes
Primary Consumers-caterpillars,lady bugs,and dragonflies
Secondary Consumers-lizards,frogs, and snakes
tertiary Consumers- birds, snapping turtle, and cat fish.

1. Because at the bottom of the pyramid producers have more living things than the other consumers.

2. Because the bigger the animal the less of the other consumers they eat the cant be on the tertiary level.

Reply
The Funky Turtles
01/19/2011 9:09am

1.Producers-Grass,Leaves, and Flowers.
Primary (First Order Consumers)- Cow,Caterpillar, and Goat.
Secondary (Second Order Consumers)-Coyote,Bird, and Fox.
Tertiary (Third-order consumers)- Bear,Owl, and Snake.
2. The energy obtained by the producers at the base of the pyramid becomes lower as you move up levels because when The Producer is eaten by The Primary Consumer the energy from The Producer (dead) is no longer their.
3. The population size of organisms becomes smaller as we move from The Producers to The Tertiary Consumers because all of the population from the Producers to the Secondary consumers has been eaten.

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