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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


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


Predation Competition

Whale Shark eats plankton and small fish

Hawks and fox eat mice.


Parasitism Mutualism

Mosquito sucking blood from animals.

Oxpecker Bird eats ticks and parasites. Beasts get pest control


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.


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."


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.

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Energy in an Ecosystem

WARM – UPA Trophic Pyramid is a visual that shows how energy moves through an ecosystem.

Homework: K.I.M. card Or Frayer Card for the terms in the I.D. me section. 5 cards

Friday, April 12, 2013Monday, April 15, 2013


KIM or Frayer Cards (see below)

KK = Key Word

II = Info. or definition

MM = Memory

Cue or picture

Your Sentence

Illustrations inspired by the poem, “Links in a Food Chain”

I.D me…..Producers – Consumers – Decomposers – Herbivores – Carnivores –

Trophic Pyramid inspired by the poem, “Links in a Food Chain”

“Energy in an Ocean Pyramid” Analysis Qs

PyramidsTrophic Pyramid Food Pyramid

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Practice EOG Pre-Test

WARM – UPTake out your KIM/Frayer cards you did for homework last night. Review each card and write a brief statement about which model you like to use better when studying: KIM or Frayer.

Homework: Quiz on Ecology Next Week: Start Studying for homework

Tuesday, April 16, 2013Wednesday, April 17, 2013

Tuesday, April 16, 2013Wednesday, April 17, 2013

Study for Ecology Quiz Next Week

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Finish Practice EOG Pre-TestOrganism Comparisons and 3 Types of Ecosystems

WARM – UPTake out your answer sheet from last class (EOG practice pre-test) and immediately continue from where you left off.

If you finished, review your answer choices and wait quietly for directions.

Homework: Quiz on Ecology Next Week: Start Studying for homework

Thursday, April 18, 2013Tuesday, April 23, 2013

Thursday, April 18, 2013Tuesday, April 23, 2013

Study for Ecology Quiz Next Week

Create 2 three column charts (see below) to fill in today’s notes.

Plants Animals Other

• • • • •

• • • • •

• • • • •

Land(Terrestrial)

Ocean(Aquatic)

Fresh Water(Aquatic)

• • • • •

• • • • •

• • • • •

Plants Animals Other• Eukaryotic• Complex Cell Structure with Organelles, especially chloroplasts/chlorophyll • Contain cell walls • Producers on food chains/webs• At the bottom of the trophic pyramids; they absorb the most energy from the sun• Give off oxygen and take in carbon dioxide (Photosynthesis)

• Eukaryotic• Complex Cell Structure with organelles• Consumers on food chain/webs• Typically in the middle of the trophic pyramid • Can be Herbivore, Carnivore or Omnivore• Give off carbon dioxide and take in oxygen (Respiration)

• Prokaryotic or Eukaryotic, but most are unicellular• Can be Protists, Bacteria, Fungi, and/or Achaea• Mostly microscopic, simple organisms• Can be• Producers: if plantlike• Consumers: if animal-

like• Decomposers: (fungi)

• Can be anywhere in a food chain/pyramid (depends on the organism)

Land(Terrestrial)

Ocean(Aquatic)


• Many & diverse types of ecosystems. There are seven major types. • Location usually dependent on the latitude of the area, and amount of precipitation • The 7 Major Biomes

1. Tropical Rain Forrest2. Savanna3. Desert4. Temperate Grasslands5. Deciduous Forests6. Coniferous Forests7.Tundra

• Most of Earth (~75%) • 40% of all photosynthesis occurs in oceans.

3 types• Shallow ocean waters • Deep ocean water • Deep ocean surface. • Photosynthetic

plankton is base of food chain.

• Only occurs in Deep ocean surface & Shallow ocean ecosystems

• No photosynthesis can occur in deep ocean because light cannot penetrate deeply into water.

• Smallest Ecosystem ~ 1.8% of earth's surface • Support many species of life including fish, amphibians, insects and plants. • Base of food-web is found in freshwater Plankton (small microscopic organisms)• Home to amphibians, reptiles and almost 41% of world’s fish species.• Faster moving water typically supports greater biodiversity than the slow moving water of pools (fast = more dissolved oxygen)

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Energy Practice EOG QuestionsOrganism Comparisons and 3 Types of Ecosystems

WARM – UPNumber 1 – 10 to take Energy EOG pre-test

Homework: Quiz on Ecology This Week: Start Studying for homework


Study for Ecology Quiz

Create 2 three column charts (see below) to fill in today’s notes.

Plants Animals Other

• • • • •

• • • • •

• • • • •

Land(Terrestrial)

Ocean(Aquatic)


• • • • •

• • • • •

• • • • •


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Water, Carbon, and Nitrogen CyclesWARM – UPCompare and Contrast. How are these three cycles similar? How are they different?

Homework:

Wednesday April 24, 2013Thursday, April 25, 2013

Wednesday April 24, 2013Thursday, April 25, 2013

•Read•Think•Talk•Write in your own words

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Marine Ecosystems and Media

WARM – UP

1. View the nitrogen cycle animation and explain, in your own words, what is occurring.

Nitrogen Cycle Animation

Homework: Review New Notes about the Cycles and Marine Ecosystems


Review New Notes about the Cycles and Marine Ecosystems

Marine Ecosystems - interdependence of all organisms living in the ocean, in shallow coastal waters, and on the seashore.

Abiotic Factorswater pressurelight dissolved gassestemperature salinity

Biotic Factors – broken into zones because the biotic factors differ depending on location

Marine Trophic Pyramid – See example


http://app.discoveryeducation.com/glossary/view/assetGuid/a62777a7-e22a-4947-ba9f-d048ef2651e4

Marine EcosystemsEstuaries - an area in which fresh water from a river

mixes with salt water from the ocean.– Very productive ecosystems…constantly receive fresh

nutrients from the river and from the ocean– The Chesapeake Bay is the largest estuary in the United

States. It produces large amounts of seafood each year, supports many species of wildlife, and provides recreation for millions of people.

– Ecosystems of the bay are threatened by several environmental problems (pollution, runoff, etc.)

Marine Ecosystems• Coral Reefs - limestone ridges built by tiny coral

animals, which slowly accumulate and form coral reefs. – Supports life of thousands of species of plants and

animals; one of the most diverse ecosystems on Earth.– Corals need clear and warm salt water for

photosynthesis…typically found in shallow, tropical seas.– Fragile to pollution and human activities. Pollution,

change in water temperature, and runoff can devastate a reefs ecosystem (27% in the world are currently in danger)

Ecosystems and the MediaDoes the media always accurately portray ecosystem

interactions?

Watch the following video clips and determine the following:1) What interactions have you observed within the living things in the

environment?2) Mutualism? Commensalism? Parasitism? Predator/Prey? Symbiotic?3) Are these relationship and interactions realistic?

Why or why not?

Lion King

Finding Nemo: Clip 1

Finding Nemo: Clip 2

http://www.youtube.com/watch?v=HwSKkKrUzUk

http://www.youtube.com/watch?v=Kd43CoSmy88




http://www.youtube.com/watch?v=LYmsVWmHI78



Closing Question

Why might film makers use unrealistic depictions of

ecosystems when making movies?

Documents

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