Ecosystem In Interactions and Energy Target 1: I can explain how - - PowerPoint PPT Presentation

Liv iving Earth Unit 1: Ecosystem In Interactions and Energy

Target 1:

I can explain how natural disruptions, both short and long-term, impact an ecosystem

Cri riteria 1: I can identify Earth’s Systems and describe how they interact

Atmosphere ________ sphere ________ sphere ________ sphere

Cri riteria 2: I can explain what an ecosystem is and identify examples of biotic and abiotic factors.

Cri riteria 3: I can describe the levels of organization within the biosphere.

Don’t forget the plants! They’re organisms too!

Criteria 4: I can differentiate between primary and secondary succession.

Do you know the difference? When does 10 succession happen? When does 20 succession happen? Have you experiences or seen either

• f these types of succession happening

around where you live? How about where you have vacationed? What causes the environment to change?

• How would the environment be different if these things happened?
• How would an environment’s abiotic and biotic factors start to come

back?

Criteria 5: I can predict how an ecosystem can change in response to a disruption.

Liv iving Earth Unit 1: Ecosystem In Interactions and Energy

Target 2

I can explain factors that affect population growth

Criteria 1: I can identify carrying capacity and types of population growth using graphs.

What is happening in the environment to allow organisms to grow exponentially? What is happening in the environment that forces populations to grow logistically? What are some examples of organisms that grow in these patterns?

Cri riteria 2: I can identify examples of density- dependent and density-independent limiting factors that affect populations.

The number of organisms influences the effects of the factor.

Density-Independent factors:

The number of organisms has no influence on the effect of the factor. Hurricane? Earthquake? Drought? Natural occurrences Increasing water temperatures affect fish behavior

Criteria 3: I can explain how a population’s size will change as a result of changing factors

What will happen to the raccoon population if there is no sunlight for a year? What will happen to the turtle population if a new species of snail invades this ecosystem? What could cause a change in the growth of the plants in the water?

Cri riteria 4: I can explain how biodiversity would be impacted as a result of increased or decreased population size.

Can you name the types of species interactions here? Do they help populations thrive? How is biodiversity impacted due to these factors?

Liv iving Earth Unit 1: Ecosystem In Interactions and Energy

Target 3

I can explain how ENERGY is TRANSFERED through trophic levels and earth’s systems as opposed to MATTER which is CONSERVED and CYCLED through ecosystems

Cri riteria 1: I can explain the transfer of energy through tropic levels in terms of how much is available to the next level and how much is lost as heat energy (10% rule

If producers have 50,000kcal of energy how much energy would the secondary consumers have? Which ecosystem has more energy, a rain forest or a Desert? Why? Which ecosystem would have more tertiary consumers?

Criteria 1: continued

What does “J “stand for?

Cri riteria 2: I can describe factors that account for the lo loss of f energy within trophic layers as being metabolic functions and heat loss.

Plants use a lot of energy to produce fruit Plants use energy to grow Larger organisms eat many smaller organisms Organisms WORK (metabolism) and produce heat given

• ff to the

atmosphere Reproduction!

Cri riteria 3: I can construct a bio iomass pyramid and explain why the producer level is larger than the top consumer level (Quaternary)

Cri riteria 4: I can interpret histograms and graphs in

• rder to identify producers as having the greatest

mass.

Criteria 5: I can model how matter is conserved and cycles through the ecosystem

What happens when too much Carbon collects in the oceans and lakes?

Nitrogen cycling

Criteria 5: continued

Criteria 5: continued

• Photosynthesis is
• Cellular Respiration is

glucose Oxygen Carbon Dioxide Water ENERGY

Liv iving Earth Unit 1: Ecosystem In Interactions and Energy

Target 4

I can use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity and populations in ecosystems of different scales

Cri riteria 1: I can identify and explain how factors affect biodiversity of ecosystems.

Cri riteria 2: I can identify and explain population sizes and the resiliency to change.

Cri riteria 3: I can analyze and describe impacts on differing scales of ecosystems (small vs big).

How does climate change impact . . .

• the biosphere?
• an ecosystem?
• a community?
• a population?
• an organism?

Cri riteria 4: I can analyze data, graphs and tables to explain the effects of abiotic and biotic factors on biodiversity and population size.

Temperature influenced the growth rate of all 3 fish

• populations. Is temperature an abiotic or biotic factor?

As temperature increased above 20°C, which species increased in number?

Cri riteria 5: I can analyze graphs and trends to identify factors that lead to changes in population size and biodiversity.

Liv iving Earth Unit 1: Ecosystem In Interactions and Energy

Target 5

I can evaluate data to determine what group behaviors increase a species’ ability to survive and reproduce.

Cri riteria 1: I can identify examples of individual and group behavior.

Cri riteria 2: I can compare data sets to determine which group behaviors increase an individual’s survival rate.

CER C: Make a claim about the optimal (best) hunting group size for bison. E: What evidence do you have to support this claim (from graph)? R: Provide a reason to explain why this hunting group size is optimal.

Cri riteria 3: I can explain why group behavior changes in response to changes in the environment.

Why do mother birds often abandon their young in the presence of humans? How do fish respond to the presence of predators like sharks?

Cri riteria 4: I can analyze data, graphs and tables to explain the effects of abiotic and biotic factors on biodiversity and population size.

Temperature influenced the growth rate of all 3 fish

• populations. Is temperature an abiotic or biotic factor?

As temperature increased above 20°C, which species increased in number?

Cri riteria 5: I can analyze graphs and trends to identify factors that lead to changes in population size and biodiversity.