interdependence within environmental systems
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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. - PowerPoint PPT PresentationTRANSCRIPT
Interdependence within Environmental Systems
11D Ecological Succession
2 types of succession• Primary-• Secondary-Discuss with partner what you know about each.Succession videoWhat 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’.
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
www.lab-initio.com
DDT was a pesticide usedto 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?