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Interactions in an Ecosystem

WARM – UP

Use your prior knowledge to define the following words:

Predator

Prey

Habitat

Ecosystem

Homework:Create Your Own Creature

Monday, April 8, 2013Tuesday, April 9, 2013

Monday, April 8, 2013Tuesday, April 9, 2013

Create your Own Creature

Habitat vs. Niche •Write a sentence for each using the terms in context.

Five Specific Interactions in an EcosystemPredation – Competition –Parasitism - Mutualism -Commensalism -

Writing and Discussion About Predation

Interactions in an Ecosystem

Predation Competition

Whale Shark eats plankton and small fish

Hawks and fox eat mice.

Interactions in an Ecosystem

Parasitism Mutualism

Mosquito sucking blood from animals.

Oxpecker Bird eats ticks and parasites. Beasts get pest control

Interactions in an Ecosystem

Mutualism

Remora sharks have an adhesive disk on their dorsal surface, with the help of which they attach themselves to whales and then, clean the whale’s skin and feed on the remains from the whale's food.

Interactions in an Ecosystem

Commensalism• "The pearlfish

uses the sea cucumber for a hide-out from predators. The pearlfish will live in the sea cucumber’s anus, backing into the hole tail-first so its head can stick out."

Interactions in an Ecosystem

Commensalism• Glass shrimp, which

are almost completely see through, will attach to the chocolate chip sea star and take on its coloration. This helps the shrimp camouflage itself so it is not eaten by predators."

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Energy in an Ecosystem

WARM – UPSymbiosis means any prolonged association of living together of two or more organisms of different species.

Create a KIM card for “symbiosis”

Homework: Complete lab analysis

Wednesday, April 10, 2013Thursday, April 11, 2013

Wednesday, April 10, 2013Thursday, April 11, 2013

Complete Lab Analysis Questions

KK = Key Word

II = Info. or definition

MM = Memory

Cue or picture

Your Sentence

Pre-Assessment Practice Questions

Review Cellular Respiration •FormulaC6H12O6 + 6O2 ATP + 6 H2O + 6 CO2

•ReactantsGlucose and oxygen•ProductsEnergy, water, and carbon dioxide•Importance of ATP = energy rich molecule•Oxidation = the act of combining with oxygen•What kind of organisms = ALL•Relation to Photosynthesis

Review Trophic Pyramid

Activity/LabEnergy Flow in Ecosystems

Nearly all of the energy that drives ecosystems ultimately comes from the sun.

Solar energy, which is an abiotic factor, by the way, enters the ecosystem through the process of photosynthesis.

Primary consumers only obtain a fraction of the total solar energy—about 10%—captured by the producers they eat. The other 90% is used by the producer for growth, reproduction, and survival, or it is lost as heat.

At each level, called a trophic level, about 90% of the energy is lost.