ecosystem

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Slide 1: 

Ecosystem “The Flow Of Energy”

Ecosystem : 

Ecosystem A group of interdependent biological communities that interact among themselves and with their physical environment in a geographic area. Capable of living nearly independently of other ecosystems. Self-regulating and self-sustaining units. Modified/affected by human activities.

Abiotic Components : 

Abiotic Components The way in which plants and animals grow and carry out their different activities is a result of several abiotic factors. These factors are light, temperature, water, atmospheric gases, wind as well as soil (edaphic) and physiographic (nature of land surface) factors.

Biotic Components : 

Biotic Components The Biotic enviroment involves all the living organisms that come regularly into contact with each other, how they interact and their mutual influences. An ecosystem consists basically of the following: Producers Consumers Decomposers

Producers : 

Producers These are usually saprophytic organisms such as bacteria and fungi and that obtain their energy by decomposing the corpses and other dead parts of organisms. They break down all the organic material of the bodies of producers and consumers into inorganic materials that are restored to the soil or water to be reused by producers.

Consumers : 

Consumers This component is made up of organisms which cannot make organic compounds from inorganic substances. They are dependant upon autotrophic oraganisms and are the consumers or heterotrophic organisms in an ecosystem. The consumers are further subdivided according to their diet, into: herbivores or plant eaters which are the primary consumers eg. cows, giraffes, elephants, etc; carnivores or meat eaters which are the secondary consumers; some carnivores are called predators (eg. lions, leopard, fish eagle, etc) which catch their prey, kill it and then eat it; others are called scavengers ( eg. vultures) which usually eat what is left by the predators; omnivores eat plant and animal material and can be primary, secondary and tertiary consumers simutaneously; a human beings is a good example of an omnivore.

Decomposers : 

Decomposers These are usually saprophytic organisms such as bacteria and fungi and that obtain their energy by decomposing the corpses and other dead parts of organisms. They break down all the organic material of the bodies of producers and consumers into inorganic materials that are restored to the soil or water to be reused by producers.

Food Chain : 

Food Chain

Slide 10: 

Begins with the SUN Photosynthesis 6CO2 + 6H2O + sunlight & chlorophyll C6H12O6 + 6O2

Photosynthesis : 

Photosynthesis Photosynthesis is a process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight.Photosynthesis occurs in plants, algae, and many species of Bacteria, but not in Archaea. Photosynthetic organisms are called photoautotrophs, since it allows them to create their own food.

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