Bell Ringer: 02/13/2017 Objective: Identify & describe trophic levels in an ecosystem. Question: At night, moths travel toward light. Which type of behavior does this describe? A: habituation B: Imprinting C: Innate Behavior D: Learned Behavior

Transfer of Energy Organisms are either… 1. Producers  2. Consumers  make their own food cannot make their own food so they must eat food. How do they trap the sun’s energy? Through what process? What is that process similar to in animal cells?

Consumers can be… Herbivores, Carnivores, Omnivores, Decomposers Energy moves up the food chain through the producer/consumer relationship. Lets make our own example of an energy pyramid.

Trophic Levels: feeding levels in an ecosystem Producer: makes their own food using energy from the sun Occurs in a process called The equation for this is…. Also called photosynthesis autotrophs

Primary consumers  eat the producers. Herbivore – Secondary Consumers  eats primary consumers Tertiary Consumer  eats secondary consumers Secondary & Tertiary Consumers may be… Omnivores or Carnivores Scavengers  eat dead organisms. Ex = buzzard, hyenas, & crayfish eats only plants

Food Chain: Shows energy transfer What way are my arrows pointing? Why?

Use the four terms given to create your own food chain Use the four terms given to create your own food chain. Make sure you put them in the correct order!

What happens when the top organisms dies??

Decomposers Bacteria & fungi that break down the dead plant & animal tissue and return nutrients to the soil.

Add the decomposer to your food chain.

Rule of 10 Algae  Minnow  Bream  Bass  Bacteria 25,000kC 2,500kC 250kC 25kC 2.5kC Rule of 10: Only 10% of energy passes to the next feeding/trophic level. Where does the other 90% go? Word problem with us eating. Grass 100 -> cow 10  me

Show the rule of 10 on your food chain Show the rule of 10 on your food chain. Start with your producer having 1,000,000 J of Sunlight!

Food Web: - Interconnected food chains; more complex - Create your own food chain on your notes next to mine.

Food chain Food web (just 1 path of energy) (all possible energy paths)

Energy Pyramid: Represents the amount of energy in a food chain

Amoeba Sisters: Individual Work Use subtitles or your headphones to complete the hand out. Take the time to pause the video or replay to make sure you understand.

Food Chains, Webs, & Pyramids

Go Over Living Organisms Quiz. On a lined sheet of paper write down the question you got wrong as well as the correct answer. Keep this sheet as we will add to it throughout the semester.

ECOLOGY OUTSIDE ASSIGNMENT Due Friday Everyone must have close to equal selfies

Bell Ringer What is the squirrel considered? What happens if I remove the grasshopper from the food web? How are an ecosystem & a community related? What is the rule of 10?

Bell Ringer What is the relationship between a community & a population? What happens if I remove the grasshopper from the food web? Can matter/energy be created or destroyed? What is the rule of 10? Calculate the energy % lost from the grass -> grasshopper -> wolf.

Trophic Levels Biomass- the amount of organic matter comprising a group of organisms in a habitat. As you move up a food chain, both available energy and biomass decrease. Energy is transferred upwards but is diminished with each transfer.

Bell Ringer Turn in your Human Impacts Web Quest State the difference between an ecosystem and a community. Identify the levels of organization from most broad to most specific. What is the difference between a habitat and a niche?

Bell Ringer State the difference between an ecosystem and a community. Identify the levels of organization from most broad to most specific. What is the difference between a habitat and a niche? Draw and label the water cycle.

Biosphere Ecosystem Community Population Organism Just like with classification, ecology is hierarchal. Each level builds on itself and they fit together like nesting boxes. Population Organism

Identify main idea, North Carolina Example, and draw a picture Gallery Walk Identify main idea, North Carolina Example, and draw a picture

Feeding Relationships There are 3 main types of feeding relationships 1. Producer - Consumer 2. Predator - Prey 3. Parasite - Host How do they trap the sun’s energy? Through what process? What is that process similar to in animal cells?

Closure: Which is Which? Lion kills a zebra & eats until full. Once lion leaves a vulture comes & eats the remains. Shark swims & pilot fish swims underneath for protection. A leech on your skin. Plover bird cleans alligators teeth. https://www.youtube.com/watch?v=Q67y6-ybktY

Habitat vs. Niche Examples of limiting factors - Amount of water Amount of food Temperature Amount of space Availability of mates Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.