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HOW ECOSYSTEMS WORK. Life on Earth Depends on the Sun. 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2. PRODUCERS. Organisms that can use sunlight directly to make their own energy Aka AUTOTROPH Trap solar energy and perform photosynthesis Vital to ecosystems
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Life on Earth Depends on the Sun 6 CO2 + 6 H2O C6H12O6 + 6 O2
PRODUCERS Organisms that can use sunlight directly to make their own energy Aka AUTOTROPH Trap solar energy and perform photosynthesis Vital to ecosystems Ex: grasses, algae, cactuses, trees
CONSUMERS Rely on producers directly or indirectly for their energy Aka HETEROTROPHS Primary Consumers = Herbivores Secondary Consumers = Carnivores or Omnivores
DECOMPOSERS Breaks down dead organisms and waste material Returns nutrients to soil, water and air Ex : fungi and bacteria
ENERGY TRANSFER Each time one organism eats another, a transfer of energy occurs Study energy transfers by mapping out food chains and food webs
SPECIAL TERMS Predator Prey Scavenger Parasite Host
PYRAMIDS 1- NUMBERS 2- BIOMASS 3- ENERGY
Calculate the Percentage loss of energy at each level Cayuga lake, NY- lake ecosystem Humans 1.2 calories Trout 6 calories Smelt 30 calories Small aquatic 150 calories animals 5. Algae 1000 calories
Calculate the Percentage loss of energy at each level Cayuga lake, NY- lake ecosystem Humans 1.2 calories 80 % Trout 6 calories 80 % Smelt 30 calories 80 % Small aquatic 150 calories 85 % animals 5. Algae 1000 calories