1 / 16

FOOD CHAIN = used to show how matter & energy move through an ecosystem.

FOOD CHAIN = used to show how matter & energy move through an ecosystem. FOOD WEB = shows all the possible food chains in an ecosystem. HABITAT = place where an organism or population of organisms live.

mckenzie-keller
Download Presentation

FOOD CHAIN = used to show how matter & energy move through an ecosystem.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. FOOD CHAIN = used to show how matter & energy move through an ecosystem.

  2. FOOD WEB = shows all the possible food chains in an ecosystem

  3. HABITAT = place where an organism or population of organisms live. NICHE = all of the ways that the organism interacts with everything else in the ecosystem-the role or job of a species in an ecosystem.

  4. Each organism in food chain represents a “feeding” or TROPHIC LEVEL 3rd Trophic Level 2o or 3o consumer 2nd Trophic Level 1o or 2o consumer 1st Trophic Level producers decomposers

  5. Producers • Plants, Photosynthetic Protists and Photosynthic Bacteria • All are Autotrophic = “self” energy • Use Photosynthesis to create all the sugar (available energy) in an ecosystem/world. • 6CO2 + 6H20 + Sun C6H1206 + 6O2 • Also use cellular respiration to “burn” the sugar they create

  6. Consumers • Anything that eats producers or other consumers which are animals and some protists. • All are heterotrophs= “different” energy • All use only Cellular Respiration to turn sugar into usable energy in the form of ATP • C6H12O6 + 6O2 6CO2 + 6H2O+ ATP (Energy) + Heat

  7. Decomposers • Anything that eats dead stuff which are fungi, protists and bacteria. • All are heterotrophs • All use Cellular Respiration to create ATP

  8. Flow of Energy • Thermodynamics is the study of the energy transformations that occur in a system. • It is the study of the flow of energy through nature. • Within a system energy cannot be re-used.

  9. Thermal equilibrium = inputs equal outputs over a long period of time.

  10. 2nd Law of Thermodynamics • States that every transformation results in a reduction of the FREE ENERGY (useable energy). • Energy transfers and transformations increase ENTROPY (disorder, randomness or chaos). • Law of Entropy. • Energy always tends to go from a more usable (higher quality) form to a less usable (lower quality) form. • You can’t get something for nothing • No such thing as a free lunch

  11. Inputs and Outputs

  12. Mechanical energy (moving, thinking, living) Chemical energy (food) Chemical energy (photosynthesis) Solar energy Waste heat Waste heat Waste heat Waste heat • Any conversion is less than 100% efficient and therefore some energy is lost or wasted. • Usually this energy is lost in the form of HEAT (= random energy of molecular movement). We usually summarize it as respiration.

  13. Heat Heat Tertiary consumers (human) Decomposers Heat 10 Secondary consumers (perch) Heat 100 Primary consumers (zooplankton) 1,000 Heat 10,000 Usable energy available at each tropic level (in kilocalories) Producers (phytoplankton)

  14. Only 25% of chemical “E” stored in gasoline is transformed in to motion of the car and 75% is lost as heat!!

More Related