Ecology Energy Flow.

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Presentation transcript:

Ecology Energy Flow

*Food Chain A visual representation of organisms in an ecosystem with arrows to show how energy is transferred (usually) by consuming another.

A visual representation of various energy systems in an ecosystem. Food Web A visual representation of various energy systems in an ecosystem.

Energy is lost as you move up the pyramid. Energy Pyramid A visual representation of various energy systems in an ecosystem showing how energy is transferred at each level. Energy is lost as you move up the pyramid. What is the 10% rule? https://www.youtube.com/watch?v=ScizkxMlEOM

Producers/Autotrophs Organisms that use the sunlight to create (produce) it’s own energy. Also called an autotroph.

Consumers/Heterotrophs Organisms that have to consume (eat) other organisms to obtain energy. Also called a heterotroph.

Let’s Review

Herbivores Organisms that have to primarily eat grasses/plant material.

Carnivores Organisms that have to primarily eat meat/protein material.

Omnivore Organisms that eat both meat/protein and plant material.

*Let’s Review

Decomposers Organisms that break down wastes such as dead materials and recycle them in an environment. https://www.youtube.com/watch?v=Z6V0a_7N1Mw

Scavengers Organisms that tend to eat dead/decaying matter… garbage https://www.youtube.com/watch?v=LGSutJuUht4

Ecological Succession Predictable changes that occur in an ecological system after a disturbance. Primary succession-rebuild of the ecological system; no soil present (rock, ash, etc.) Pioneer species- first to arrive on the scene! Lichens break down on rocks so that soil can form. Secondary succession-rebuild of the ecological system once soil is present to build upon.

Mt. St. Helens https://www.youtube.com/watch?v=iqG4Vi-eu5U&index=1&list=PLuqrIgiht5RJluQ9lHQqELnP9cKaezRxu https://www.youtube.com/watch?v=4RsMyVavT2Q&index=7&list=PLuqrIgiht5RJluQ9lHQqELnP9cKaezRxu https://www.youtube.com/watch?v=W2sUFP9zrbg&index=8&list=PLuqrIgiht5RJluQ9lHQqELnP9cKaezRxu

Relationships between species Competition Predation Symbiosis

Limiting Factors Factors in the environment that can “limit” a population’s growth. Ex: weather, predation, lack of resources (water, food), habitat destruction, pollution…

I. Competition The struggle for organisms to survive as they compete for natural resources including habitat. https://www.youtube.com/watch?v=hx-Q1k_9SwA&list=PLbAqgkt5alRLzg55mx5GUwF7PR7oqyim- http://www.arkive.org/turkey-vulture/cathartes-aura/video-08.html

II. *Predation One organism killing another for food. https://www.youtube.com/watch?v=LU8DDYz68kM https://www.youtube.com/watch?v=6hGuallLPcM

III. Symbiosis *Mutualism- both species benefit (win/win) (+/+)  https://www.youtube.com/watch?v=Qqa0OPbdvjw

III. Symbiosis https://www.youtube.com/watch?v=IrE05fvMx_o Commensalism- a relationship in which 1 species benefits and the other species is neither helped nor harmed. (+/0)

III. Symbiosis *Parasitism- a relationship in which 1 organism lives on or inside another harming it. (+/-) https://www.youtube.com/watch?v=3n4kt-hOpzc