Presentation is loading. Please wait.

Presentation is loading. Please wait.

Grade 9 Biology Transfer of Energy and Matter

Similar presentations


Presentation on theme: "Grade 9 Biology Transfer of Energy and Matter"— Presentation transcript:

1 Grade 9 Biology Transfer of Energy and Matter
Community Ecology Grade 9 Biology Transfer of Energy and Matter

2 Analyzing a Food Web Put the following organisms into a food web:
Algae Hawk Duck Large Fish Frog Minnow Snail Snake Insects

3 Adding Vocab Producer: Primary Consumer: Secondary Consumer:
Tertiary Consumer: Higher Order Consumer: Decomposer:

4 How well did you do?

5 What would happen if? Snails got a disease and their population dramatically dropped: Sparrows? Big Fish? Small Fish?

6 What do decomposers do? What levels do decomposers get energy from?
What is the role of decomposers in the transfer of matter?

7 Energy Transfers: Rule of 10’s

8 Biomass: The mass of all of the organisms at a given trophic level

9 Relationships between organisms:
Predation: Predator Prey Competition: Two organisms competing over the same food source Symbiosis: Mutualism +/+ Commensalism +/0 Parasitism +/-

10 Name the relationship!

11 What type of relationship?

12 What type of relationship? (mistletoe on tree)

13 What type of relationship?

14 What type of relationship?

15 What type of relationship?

16 Homeostasis: Interactions can change
Ecological Succession: Organized process of change when an ecological community is built or disrupted. Primary Succession: Ecosystem is built where there was none previously. Secondary Succession: Ecosystem adapts to change.

17 Primary Succession

18 Secondary Succession

19 Are climax communities really stable?
Can be impacted by: Pollution Invasive species

20 Biological Magnification
Toxins build up in the food chain…how is this different than the transfer of energy?

21 Examples of Biological magnification
DDT: “Silent Spring” Rachel Carson and use of DDT video: Current Issue: Mercury; dangerous in predatory fish (tuna)

22 Invasive Species Native Introduced Invasive
Original to the biological community Introduced Brought into a community. May or may not be accidental Invasive Brought into a community; has a negative impact on the community: May outcompete native plants for resources May be resistant to pests

23 Matter cycles between organisms and their environment.
Biogeochemical cycles: Bio—living things Geo—Earth Chemical—Different forms of matter Examples: Water, Carbon, Nitrogen

24

25 Water Cycle: Always water, different states of matter
Transpiration: Role of plants in the water cycle

26 Carbon Cycle Role of photosynthesis, respiration, decomposition.
Source: Adds CO2 to the atmosphere Sink: Stores carbon How is the balance of source & sinks being impacted?

27 Nitrogen Cycle Bacteria are essential: otherwise nitrogen gas would stay as N2 in the air! Legumes: plants that have bacteria associated with their roots that “fix” nitrogen.

28 Nitrogen Cycle


Download ppt "Grade 9 Biology Transfer of Energy and Matter"

Similar presentations


Ads by Google