ECOSPHERE the biosphere of Earth especially when the
ECOSPHERE the biosphere of Earth, especially when the interactions between living and nonliving components are emphasized biosphere: the regions of the surface [lithosphere], atmosphere, and hydrosphere occupied by living organisms
Trophic Level: The trophic level of an organism is the position it occupies in a food chain. The word trophic derives from the Greek τροφή (trophē) referring to food or feeding. A food chain represents a succession of organisms that eat another organism and are, in turn, eaten themselves.
Energy Allocations… sunlight or food in (energy source) energy stored in biomass stays in the organism equal energy stored in waste energy used/”lost” in metabolism leaves the organism
We looked at energy allocation “up” the food chain… producers primary (1 ) consumers secondary (2 ) consumers tertiary (3 ) consumers the only energy available to the next trophic level is the energy stored in the biomass of that which is eaten ______________ lost (no longer available) the rest of the energy is ____ waste in the ______ metabolism and for _______ now…. . add in decomposers AND consider the transfer of matter….
decomposers… eat dead stuff (“garbage”) scavengers… eat dead stuff too…. what’s the difference? decomposer vs scavenger
decomposers… eat dead stuff (“garbage”) scavengers… eat dead stuff too…. what’s the difference? decomposer vs scavenger decomposers eat “garbage” and put nutrients back into the soil… for plants
”) e (th e ss s “m a m ti bio ” tha ff u t “s ) e of m o s ing es ( mak n build w its o aterials m the building materials eat food CO 2 + H 2 O CHO’s + O 2 from soil CHO’s amino acids nitrates phosphates carbohydrates fats proteins DNA
re-play the game… with the decomposers Decomposers (eat dead stuff “garbage” - bacteria, fungi Primary energy source : Waste (garbage) A “meal” of energy: 6 beads Allocate your “meal” as follows: 1 beads = energy stored in waste (feces, discarded body parts, dead “stuff”) 3 beads = energy used/ “lost” as heat through metabolism 1 bead = energy stored in biomass of the Decomposer that can be eaten by others (used as part of a meal by others) 1 bead = nutrients return (organic and inorganic matter) For every 6 nutrient return beads, collect an organic/inorganic nutrient card and return it back to the producers
Energy and Matter Flow
Energy and Matter Flow
- Slides: 12