1. what type of tropism is responsible for plants growing towards light? 2. describe the 10% rule. ...

1. What type of tropism is responsible for plants growing towards light?

2. Describe the 10% rule. 3. What kind of consumer eats primary producers? 4. If a disturbance hits an area, destroys most of

the animals, how will the population grow back?

3/18 Daily Catalyst Pg. 32 Biodiversity

Ecology test on Friday Study guide due test day Schedule test make up with Mrs. Ireland

Visual Aid due by the end of class We will present the information

Unit 3 will be Evolution and ties to the environment

3/18 Class Business Pg. 32 Biodiversity

Daily Catalyst Agenda Biodiversity Notes Visual aid work time Study guide work time Homework: study for the ecology test

3/18 Agenda Pg. 32 Biodiversity

The diversity of species within an ecosystem may influence the stability of

the ecosystem.The student is able to make scientific

claims and predictions about how species diversity within an ecosystem

influences ecosystem stability.

Objective

Biodiversity!!!!

Key Point #1: Biodiversity is the variety of life in an ecosystem.

Biodiversity is…

Low Biodiversity

High Biodiversity

Low or High Biodiversity?

Low or High Biodiversity?

Low or High Biodiversity?

Stable = things stay the same

Key Point #2: An ecosystem is stable if it does not change easily When an ecosystem is resistant to change, it is

stable When an ecosystem can be easily changed, it is

unstable In this class, we will measure change in a population

Ecosystem stability… What that is!?

Rabbits eat grass. Foxes eat rabbits

This food web has low biodiversity

Grass

Rabbit

Foxes

A disturbance hits…A drought happens and kills all the grass.

This food web has low biodiversity

Grass

Rabbit

Foxes

What happens to the foxes?

This food web has low biodiversity

Grass

Rabbit

FoxesHow many species do we have left?

0!BIG change?

The food web started with low biodiversity Key Point #3: Low biodiversity =

unstable ecosystem What this means: just one change can have a

HUGE effect on all the species!

Biodiversity and stability

Let’s add a few more species to our original ecosystem

This food web has high biodiversity

Grass

Rabbit

Foxes

Chickens

Carrots

A disturbance hits…A drought happens and kills all the grass.

This food web has high biodiversity

Grass

Rabbit

Foxes

Chickens

Carrots

What happens to the foxes?

This food web has high biodiversity

BIG change?

Grass

Rabbit

Foxes

Chickens

carrots

We can figure out which of two ecosystems has higher biodiversity based on how stable each one is.

Key Point #4: if two ecosystems are hit by the same disturbance, the

ecosystem that is more damaging must have less biodiversity (unstable)

Comparing Multiple Ecosystems

Ecosystems with high biodiversity change less than ecosystems with low biodiversity after a disturbance.

If ecosystem “A” changes less than ecosystem “B” in response to the same disturbance, “A” must have higher biodiversity than “B.”

The main point:

In a forest ecosystem, wolves eat rabbits. Rabbits eat grass.

1.High or low biodiversity? WHY?2.A brushfire hits! All the grass is wiped out!

a. What is going to happen to all of the rabbits?b. What is going to happen to all of the wolves?

3. Is this a stable or unstable ecosystem? WHY?

Quick Class Practice

Ecosystem 1 There are many animals that live in the

grassland ecosystem. Grass and small shrubs are the producers in this biome. Rabbits, squirrels and mice and are the primary consumers. Rabbits and mice and eat only small shrubs from the grassland. The squirrels eat both grass and small shrubs. Foxes eat the rabbits and mice.

Quick Class Practice

Ecosystem 2 Tropical rainforests are the most diverse biome in the

world and there are many connections in between species. There are many producers that live in the rainforest, including orchids(flowers), banana trees, the coconut tree and bamboo. The primary consumers are the macaw (bird), fruit bats, monkeys and insects. The macaw and the fruit bats eat orchids and banana trees. The monkeys and insects eat bamboo, banana trees and coconut trees. Pythons and jaguars are secondary consumers. Pythons eat macaws and fruit bats. Jaguars eat macaws, monkeys and insects.

Quick Class Practice

1. How many species are in the grassland ecosystem BEFORE the brush fire?

2. How many species are in the grassland ecosystem AFTER the brush fire?

3. How many species were lost in the grassland ecosystem because of the brush fire?

4. How many species are in the rainforest ecosystem BEFORE the disease?

5. How many species are in the rainforest ecosystem AFTER the disease?

Quick Class Practice

6. How many species were lost in the rainforest ecosystem because the disease hit?

7. Which ecosystem started with the largest biodiversity?

8. Which ecosystem ended with the largest biodiversity? 9. Which ecosystem is more stable?

Quick Class Practice

Directions: As a group, work on the study guide using your notes and textbook.

Time: 15 minutes Noise: 2 (with group)

Study Guide Work Time

1 2 3 4Nicoh Stephanie David SmokeyBarrian Ridel Nick Daniel G. Andrea Eliud Avery DarriusHefer Chris E.

Directions: Work on the visual aid slide for your ecology research project. Email your slide to Mrs. Ireland when you are finished.

Stacie.ireland@gmail.com Time:15 minutes Noise: 0 (no talking required)

Visual Aid Work Time

1 2 3 4 5 6 7 8 9 10Eva Wyat

tTravis

Stephen

Daniel V.

Kayla

Zaven

Alfred

Brian Chase

Eric Francisco

Eduardo

Terriyan

Fabien

Amani

Directions: As a group, work on the study guide using your notes and textbook.

Time: 15 minutes Noise: 2 (with group)

Study Guide Work Time

1 2 3 4 5 6 7 8 9 10Eva Wyat

tTravis

Stephen

Daniel V.

Kayla

Zaven

Alfred

Brian Chase

Eric Francisco

Eduardo

Terriyan

Fabien

Amani

Directions: Work on the visual aid slide for your ecology research project. Email your slide to Mrs. Ireland when you are finished.

Stacie.ireland@gmail.com Time:15 minutes Noise: 0 (no talking required)

Visual Aid Work Time

1 2 3 4 5 6 7 8 9 10

Smokey

Nicoh

Barrian

Stephanie

Darrius

Andrea

Eluid

Ridel

Hefer

Daniel G.

David

Nick Avery

Chris E.

Directions: Complete quiz corrections for quiz #7 and #8. Use this time as a review for the ecology test.

Time: Until the end of class Noise: 1 (with a partner)

Quiz #7 and #8