Transcript Human Impact Ecology

Human Impact Ecology
Unit 3
In pg. 54
• Simply write in and Student survey.
– Now get on the computer and go to google
classroom or my.ccsd.net and look for the
student survey assignment. Do it instead of
writing out an in.
Do it now pg. 54
• What are ways you disturb the land or
environment every day in your life? Think of
at least 3.
Vocabulary cards.
• Go to google classroom and look up the
vocabulary cards assignment.
• No this does not show up in the notebook you
will submit this electronically on google
classroom.
Do it Again Pg. 54
• What did you think of the vocabulary
assignment would you like to do vocabulary
this way in the future or not? Why?
Out Pg. 54
• What are 3 environmental factors that
influence what you do during the day?
In: pg 56
Describe the interaction in this picture.
3+sentences
Do it Now Pg. 56
• What is competition?
Title Page 57
1. Write the topic for the
unit in the middle of the
paper and box it in.
2. Divide the paper into 3
equal sections.
3. Put a subtopic/key
word in each section.
4. Add an appropriate
picture to each section(no
stick figures).
5. Each section must
have 3 different
colors(black and white
don’t count). Don’t use
the same 3 colors for 2
different sections.
Use Ch 5 in the textbook
Unit 2:Ecosystem
Dynamics: Biodiversity
Title - Communities
Cornell Notes Pg. 59
What is a community?
What are Community Interactions
• Predation(+-)
– One organism
kills and eats
another
organism.
What is competition?
• Competition(--)
– 2 organisms are
competing for the
same resource.
– May be interspecific
(between members
of different species)
or intraspecific
(between members
of the same species).
What are Niche and Habitat?
• Habitat-place where an
organism lives.
• Niche-role and position a
species has in its
environment.
– Organisms with the same
niche compete if they are in
the same habitat.
How do Stability & Disturbance work
together?
• Disturbance-events that change a community
by removing organisms or changing resource
availability.
• Stability is the ability of a community to resist
disturbance and not change.
What is Biodiversity?
• The variety of life in an area.
• Measured by species richness-the number of
different species in an ecosystem.
• Extinction is when the last individual of a species
disappears.
– Endangered species=species that are likely to become
extinct.
– Threatened species=species that are close to
becoming endangered.
• Biodiversity increases the stability of a
community
Which has more species diversity?
Thru1 Pg. 60
• How do Stability & Disturbance work
together?
Thru 2 pg. 60
• It is often said that a habitat is the organisms
“address” and its niche is like its “job”.
Please explain this in 3+ sentences.
Thru3 Parmecium Pre Lab pg: Pg.61
Use the internet to Define these words:
1. Paramecium
2. Interspecific competition
3. Intraspecific competition
4. Competitive exclusion principle
5. Niche
Do it again Pg. 56
• How do Stability & Disturbance work
together?
Out Pg. 56
• What are Niche and Habitat?
In Pg. 62 (100pts)
Use the internet to Define these words: (yes do
them again – 100pts)
1. Paramecium
2. Interspecific competition
3. Intraspecific competition
4. Competitive exclusion principle
5. Niche
Do it Now pg. 62
• What is a hypothesis?
• What is the independent variable?
• What is the dependent variable?
• Paramecium are microscopic, unicellular protists that live
in water.
• The 2 species we are looking at do not eat each other, it
isn’t a predator prey relationship.
• They compete for the same food. Paramecium are
predators that feed on algae and bacteria
https://www.youtube.com/watch?v=a4aZE5FQ284
Thru 1: pg 63 Virtual Paramecium Lab
Virtual Lab: Competing Paramecium
Shortened URL:
goo.gl/IgrTF7
Google search:
Glencoe virtual lab paramecium
Thinking About This:
• What kind of growth pattern do both species
of Paramecium follow?
**We expect a somewhat slow start and then
a very rapid increase in number.
Do it again Pg. 62
• What was your hypothesis for the
paramecium lab?
• What was the independent variable for the
paramecium lab?
• What was the dependent variable for the
paramecium lab?
Out Pg. 62
In the virtual lab,
1. What were the paramecium competing for?
2. Was this inter or intraspecific competition?
Why?
In Pg. 64
• Define Independent Variable
Do it Now Pg. 64
• Define Dependent Variable
Thru 1: pg 65
• The Lesson of the Kaibab
Sea Otter - Enhydra lutris
https://www.youtube.com/watch?v=A
SJ82wyHisE
Article: Ocean Keepers Pg. 66
1. What is kelp?
2. Why are scientists keeping a close eye on the sea
otter?
3. What is an ecosystem?
4. Why was the sea otter population almost wiped out
in the 1700-early 1900’s?
5. What is causing the sea otters to die out now?
6. What parasites are infecting sea otters?
7. How do the parasites get inside the sea otter?
8. What is a keystone species?
9. Why are otters considered a keystone species?
10. How do sea otters keep kelp populations healthy?
Do it again pg. 64
• What did the deer teach us in the Lesson of
the Kaibab?
Out Pg. 64
The majority of keystone species are predators
like the otters you read about. Prairie dogs are
also keystone species, but not predators
• Prairie dogs contribute to the soil and water
quality in their plains ecosystem. Their foraging
retains water in the soil and forces fresh new
grasses to continually grow. Young grasses have
more nutrients for species such as bison and
elk.
Explain how prairie dogs are keystone species.
In: pg
Watch the movie clip ”Khan Academy: Disturbance” and explain the
following terms (9 minutes)
1.
2.
3.
4.
5.
Primary succession
Pioneer species
Secondary succession
Climax community
Intermediate disturbance hypothesis
https://www.khanacademy.org/science/biology/crash-course-bioecology/crash-course-ecology-2/v/crash-course-ecology-06
• Succession is a change in the species that make up
a community over time.
• If a community is disturbed it has to “start over”
– Primary succession-development of a community in an
area that has not supported life before—no soil.
– Secondary succession-sequential replacement of an
existing community following a disturbance (fire ,
flood, landslide,etc.)
Thru 1: pg
Mount St. Helens: A Story of Succession
Questions
• Read Mount St. Helens: A Story of Succession
and answer the questions
• Tape the completed question sheet on this
page.
Thru 2: pg
Types of Succession Flowmap
• There are 4 pairs of cards (1picture card and one text card in
each set) for primary succession and 4 pairs of cards for
secondary succession.
• Arrange the cards into 2 SEPARATE flow maps, one for primary
succession and one for secondary succession.
• Copy the 2 flow maps into your INB on these pages.
• INCLUDE the colored picture!!!!!
Type of Succession with definition
s 1
Stage
Stage 2
Stage 3
https://
Stage 4
Picture
s
s
Picture
Picture
s
s
Picture
Out
Is this an example of primary or secondary succession? Why?
In: pg
Write down 5 facts as you watch the
movie clip.
https://www.youtube.com/watch?v=z9gHuAwxwAs
Thru 1: pg
• Species can be native or endemic to their habitat,
that means they occur naturally. Exotic species or
Introduced species are not native to an area.
Sometimes an exotic species will overwhelm native
species and cause harm, when this happens the
exotic species is called an invasive species.
• Do you think the following species are Endemic,
Exotic or Invasive in Southern Nevada?
1.
8.
1. Dog
Endemic, exotic or invasive?
2. Desert Tortoise
Endemic, exotic or invasive?
3. Tumble weed
Endemic, exotic or invasive?
4. Pigeon
Endemic, exotic or invasive?
5. Coyote
Endemic, exotic or invasive?
6. African honeybee
Endemic, exotic or invasive?
7. Mustang
Endemic, exotic or invasive?
8. Roadrunner
Endemic, exotic or invasive?
Pg.
Read the comic below and then select the response that best
matches your response.
Pick 1 of the 3 choices below by highlighting it.
Which of the following best matches how you would respond
to releasing the crawdad (i.e. crayfish) into a non-native
environment?
• Releasing one crayfish into the creek will have no impact
on the organisms that currently live there.
• The crayfish will adapt to its environment or die because
nature works on the rule of “survival of the fittest.”
• Introducing the crayfish to a new environment could have
a serious impact on the organisms that currently live
there.
Why did you select your response? Please explain your logic
in more detail.
Thru 2
Pg.
Invasive Species Web Quest
• Answer the 12
questions here.
• You do not need to
write out the questions.
Out
One of the last mass
extinction events was when
the dinosaurs were wiped out
by a meteor impact. 75% of
species went extinct at this
time.
Scientist say we are currently
in the Sixth Mass Extinction.
What is the primary cause of
the Sixth Mass Extinction?
A tree left behind in a deforested
Amazon rainforest