Interdependence within Environmental Systems

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Presentation transcript:

Interdependence within Environmental Systems

11D Ecological Succession 2 types of succession Primary- Secondary- Discuss with partner what you know about each. Succession video What are pioneer species?

Primary succession

Secondary Succession

Fact or Fib Primary succession takes only a few years. Secondary succession is a result of volcanic activity like Mt. St. Helens. 1’ has lichens and moss as the first pioneer species. 2’ is the rebuilding of an established area. Climax communities will be reached about the same time. Hurricane destruction is an example of 1’.

Bastrop State Park faces setback following rain

12A Relationships Among Organisms Symbiotic relationships 5 types Predation + - Competition + - Parasitism + - Commensalism + 0 Mutualism + +

Symbiotic relationship card activity Each card will have a buddy card that creates one of the 4 symbiotic relationships. EX: lion and wildebeast. Put the 4 relationship cards at the top of your desk. Which type of relationship is the example? Place the cards in that category. GO!!!! First one all correct gets a prize.

12C Matter and Energy Flow—food web and energy pyramids. What do the arrows in a food chain or web show? Flow of energy—only goes up. What is a producer? Makes its own food—plants. Located where in food chain/web? Bottom

What is a(n) …………. Herbivore Carnivore Omnivore Detritivore decomposer

Trophic levels (energy levels)

Levels of food web Producer First level (order) consumer Second level (secondary) consumer Third level (tertiary) consumer Fourth level (quaternary) consumer (TOP)

Marine food web

Desert food web

Forest food web

Ecological pyramids Biomass

Energy pyramid Stored energy decreases as the pyramid increases

10% rule

biomagnification Increasing amounts of toxins (poison) as you go up the pyramid

DDT was a pesticide used to rid crops of bugs. Runoff into rivers and streams.

12F Environmental Change Ecosystem stability—examples Cycles N-nitrogen—bacteria turn nitrogen into different form plants can use C-carbon—most carbon stored in ground but disrupting can release P-phosphorous—used in DNA-making amino acids which make proteins Water-recycle the water Oxygen-photosynthesis

https://www.youtube.com/watch?v=nzImo8kSXiU carbon cycle https://www.youtube.com/watch?v=leHy-Y_8nRs nitrogen and phosphorous cycle What happens if one is disrupted?