Ecosystems Are Complex
-
Upload
sumirajan -
Category
Technology
-
view
1.540 -
download
0
description
Transcript of Ecosystems Are Complex
![Page 1: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/1.jpg)
Ecosystems
Complex structures containing mother nature’s gifts!
![Page 2: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/2.jpg)
Ecosystems
• An ecosystem is a natural unit consisting of all plants, animals and micro-organisms in an area interacting together with all of the non-living physical factors of the environment.
• So how do living things interact with non living things?
![Page 3: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/3.jpg)
Before we answer this question…
Lets look at examples of living and non living.
![Page 5: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/5.jpg)
Even these little guys are alive…
Tiny planktons found in the ocean are a main food source for many fish and mammals.
A protozoan found in the human body.
![Page 6: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/6.jpg)
Living and non living things interacting…
Living Things Non- Living things
Plants
Herbivores
Carnivores
Omnivores
Detrivores
Sunlight
Water
Soil
Temperature
Carbon Dioxide
Oxygen
Moisture
![Page 7: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/7.jpg)
Putting it Together
![Page 8: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/8.jpg)
• The energy obtained at the first stage of any ecosystem cycle comes from the sun.
• This is called the primary source of energy.
• Energy from the sun is captured by plants in a process called photosynthesis.
• Final product of photosynthesis is oxygen, water and simple sugars.
![Page 9: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/9.jpg)
• As a result of photosynthesis, smaller creatures like insects and other herbivores consume the plants.
• Then carnivores eat these herbivores for their source of energy.
• The remains of the herbivores and droppings left by any carnivores are consumed by detrivores (insects, beetles, etc.)
![Page 10: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/10.jpg)
![Page 11: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/11.jpg)
If only the cycle was this simple…
• Unfortunately due to various human influences such as clearing of rainforests and the overuse of resources, some stages of the cycle either get too much energy or none at all.
• Clearing of forests around the world have resulted in the extinction of many native plants and animals.
![Page 12: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/12.jpg)
Types of human impact on the ecosystem.
• Reduction- Loss in area or coverage of an ecosystem.
• Fragmentation- Ecosystems reduced on size for purposes of housing and development.
• Substitution- Replacing one set of organisms with another. For example, the introduction of cane toads in an effort to eradicate sugar beetles.
• Simplification- Making an ecosystem less diverse.• Contamination- Introducing pollutants to an
ecosystem.• Overgrowth- Creating too much nutrients causing
an overproduction of an organism.
![Page 13: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/13.jpg)
Ecosystems in Australia
• Wetlands• Arid Inlands• Coral Reefs• Rainforests• Remnants• Islands
![Page 14: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/14.jpg)
Ecosystems in Australia
A marine habitat.
A wetland habitat.
A rainforest habitat.
An arid desert habitat.
![Page 15: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/15.jpg)
Riddle Me This!
I have gills, I have scales, I have fins, and one tail….
You may think I live underwater but alas to your horror I love walking not on water but on land!
What am I?
![Page 16: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/16.jpg)
I am a Mudskipper!
Unlike most fish, mudskippers spend most of their time out of the water!
And they can live both in the water and on land. So how do they do it?
![Page 17: Ecosystems Are Complex](https://reader035.fdocuments.net/reader035/viewer/2022062514/557c6a81d8b42a61168b45dd/html5/thumbnails/17.jpg)
The End!