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Warm Up: Food Chain / Web : 

Warm Up: Food Chain / Web Draw a food chain using organisms from the ocean. Draw a food web using organisms from the desert.

Fieldwork Opportunities : 

Fieldwork Opportunities Saturday 8:30 – 1 Sun Valley Recreational Center Call to reserve a spot 818 771 0236 Sunday 12 – 3 School Clean Up Meet in Quad and sign in with either Erica Kirk or Anh Nguyen

Notes #10: : 

Notes #10: Ecology

I. Ecology : 

I. Ecology A. Ecology: Study of interactions within ecosystems B. Ecosystem: Interaction between all biotic and abiotic components of the environment C. Closed System: No matter enters or leaves only energy can be exchanged

II. Biotic Components : 

II. Biotic Components Biotic: living (organisms) trophic levels: “eating” levels 1) producer / autotroph: makes own food through photosynthesis Using CO2 and light 2) consumers / heterotrophs: need to eat food to survive. a) primary / first order consumer: herbivore. Eats producers. b) secondary/ second order (carnivores, omnivores, decomposers, scavengers)

Slide 6: 

I will provide: Water Potting soil Gravel Tape to seal your bottle Growing station You must bring:

Who’s bringing what? : 

Who’s bringing what? WE’RE PUTTING TOGETHER OUR ECOSYSTEMS ON MONDAY! I will provide: Water Potting soil Gravel Tape to seal your bottle Growing station You must bring: TWO 2 liter bottles Animal (s) Plant(s) Anything else you need for your experiment

III. Laws of Energy / Thermodynamics : 

III. Laws of Energy / Thermodynamics Energy: Capacity to do work (move something) A) First Law: energy can’t be created nor destroyed, but can be transferred / transformed B) Second Law: entropy (disorder) increases when you transfer / transform energy

IV. Energy Flow (Continued) : 

IV. Energy Flow (Continued) Pyramid of Productivity (energy flow) Most energy lost through feces, life processes, heat to env’t 1 3rd order consumer 10 2nd order consumer 100 1st order 1000 producers


V. TROPHIC RELATIONSHIPS Feeding relationships Food Chain Shows flow of energy from one organism to the next Producers herbivores carnivore

Slide 11: 

Food Web Shows many interactions / food chains

VI. Abiotic Factors : 

VI. Abiotic Factors Abiotic Factors: non living Climate: temperature, sunlight, wind Soil, rocks Natural disasters (drought, earthquakes) Air, Water, Nutrients etc..

Homework #8: : 

Homework #8: Outline p. 767 – 779 MUST KNOW TERMS FOR TOMORROW’S ACTIVITY!

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