PHOTOSYNTHESIS CO 2+ H 2 O – C 6 H 12 O 6 + O 2 + HEAT TRANSFORMATIONS - LIGHT ENERGY TO STORED CHEMICAL ENERGY.

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Presentation transcript:

PHOTOSYNTHESIS CO 2+ H 2 O – C 6 H 12 O 6 + O 2 + HEAT TRANSFORMATIONS - LIGHT ENERGY TO STORED CHEMICAL ENERGY

RESPIRATION C 6 H 12 O 6 + O 2- CO 2+ H 2 O + HEAT - RELEASES ENERGY FROM GLUCOSE AND OTHER ORGANIC MOLECULES INSIDE ALL LIVING CELLS. - TRANSFORMATION: STORED CHEMICAL ENERGY TO KINETIC ENERGY AND HEAT

TRANSFER AND TRANSFORMATION OF ENERGY SOLAR RADIATION- REFLECTED, TRANSMITTED OR IS THE WRONG WAVELENGHT TO BE ABSORBED - ECOLOGICAL EFFICIENCY: THE PERCENTAGE OF ENERGY TRANSFERRED FROM ONE TROPHIC LEVEL TO THE NEXT (LOW, AND ACCOUNT FOR THE ENERGY LOSS) - on average- 10% of the energy available to one trophic level becomes available to the next

CONVERSION OF LIGHT ENERGY TO HEAT ENERGY, BY AN ECOSYSTEM!

ENERGY STORES AND FLOWS - BOXES AND ARROWS (ENERGY, BIOMASS, PRODUCTIVITY) VARYING WIDTH OF THE ARROWS INDICATES PROPORTIONALLY HOW MUCH ENERGY OR PRODUCTIVITY IS FLOWING AT ANY POINT IN THE DIAGRAM SANKEY DIAGRAMS (PRODUCTIVITY DIAGRAM, BY HOWARD ODUM, 1950.)- A SPRING-FED STREAM