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Transcript of Ecology
Ecosystems have both
living components (biotic factors
such as the trees, birds, and fish) and
nonliving components (abiotic factors
such as how much rain or sun an area gets). All ecosystems need energy, and the most basic form of energy comes from the sun.
(also known as autotrophs) are able to make their own food. These are eaten by
(also known as heterotrophs). We can track the flow of energy linearly using a
or look at a more detailed flow of energy using a
A model that illustrates the biomass productivity and multiple trophic levels in a given ecosystem.
Make their own energy
Consumers that eat producers
Secondary Consumers/ omivore or carnivoire:
that eat primary consumers
Tertiary Consumers/ / omivore or carnivoire:
: Consumers that eat
When individual organisms compete for similar resources such as food, territory, and mates.
An ecological relationship in which one organism captures and feeds on another organism.
Populations of different species living together in close proximity.
Both organisms benefit from relationship
Example: sea anemone and clown fish
One organism benefits and the other neither benefits nor is harmed from the relationship
Example: barnacles on whales
One organism benefits and one is harmed from the relationship
Example: dog and tick
Take Ecology Prezi assessment in BUZZ.
A species normally living outside the distribution range that has been introduced by either deliberate or accidental human activities:
also known as introduced, invasive, alien, nonindigenous, or exotic.
Examples of Nonnative Species in PA
Native to China, Japan, and Taiwan
No natural predators
Causes damage to crops
Native to Eastern Europe and Russia
No natural predators
Competing with other mussels, and effecting the ecosystem.
A series of predictable and orderly changes in an ecosystem over time
consume dead plants and animals and break them down.
Global warming is caused by the
. Earth's atmosphere behaves like a gigantic greenhouse, as the sun shines down, some of the energy from the sun's rays are trapped as heat by gases in the atmosphere including carbon dioxide and methane. Some of this heat energy radiates back out toward space but some is reflected back down to Earth, effectively trapping heat and keeping the planet about 33 degrees hotter than it would otherwise be.
This is called the natural greenhouse effect and it's a good thing. Without it, Earth would be much too cold to support the huge diversity of life that it does. However, the more greenhouse gases we release into the atmosphere, the more heat becomes trapped on Earth instead of being reflected back into space. Therefore, warming up the Earth more than normal over time.
rocesses that cycle matter in an ecosystem.
These include the water cycle, carbon cycle, nitrogen and phosphorous cycle.
As matter moves through these cycles, it is never created or destroyed — just changed.
Organisms needs nutrients and water to build tissues and carry out life functions.
Nutrients and water pass through organisms and the environment through these cycles. Biological processes such as eating and breathing, Geological processes such as earthquakes and volcanoes, Chemical processes such as
rain and lightning, and human activing such as using fossil fuels, or logging all contribute to these cycles.
Click on each link below for an interactive Biogeochemical Cycle: