Ecosystem Ecology Honors Biology Ch
Ecosystems Characterized by: Biotic Factors: Plants Animals Fungi Protists Bacteria Abiotic Factors: Temperature Rainfall
What do these things have in common?
Where does the energy come from?
Producers (Autotrophs) Plants, some bacteria, and some protists: convert light energy into chemical energy
Consumers (Heterotrophs) Animals, Fungi, some protists, and some bacteria: Consume chemical energy and convert into usable energy
Herbivores Consume producers Ex: rabbits
Carnivores Consume other consumers Ex: wolves
Omnivores Consume both producers and consumers Ex: humans and bears
Detrivores (Decomposers) Break down organic matter Ex: bacteria & fungi
Overview Energy in Ecosystem From sun (light energy) Transferred by photosynthetic plants To chemical energy (found in food) Make ATP energy (usable energy in body) Free energy (released as heat)
Honors Biology Ch Energy Flows in an Ecosystem
Food Chain a relationship in which organisms depend on each other for energy/food.
Food Web a group of interrelated food chains. How many organisms are: 1. Autotrophs? 2. Heterotrophs? 3. Herbivores? 4. Carnivores? 5. Omnivores? 6. Detrivores?
Delicate Balance Sometimes the removal of one species results in the collapse of the ecosystem Ex: sea otter (Enhydra lutris)
Trophic Relationships 3° Consumers (carnivores) eats 2° Consumers 2° Consumers (carnivores) eats 1° Consumers 1° Consumers (herbivores) convert chemical energy into ATP Producers (autotrophs) convert light energy into chemical energy
Energy Pyramid
Biomass Pyramid
Numbers Pyramid 1 Bird 2 Fish 4 Water Shrimp 7 Daphnia 10 Algae
Matter Cycles in the Ecosystem Honors Biology Ch. 4.14
Earth is matter
Chemistry is matter
Life is made out of matter
Biogeochemical Cycles Biotic Factors are made up of matter (CHNOPS) These elements cycle in our biosphere
Water Cycle
Carbon Cycle
Nitrogen Cycle
Phosphorus Cycle