ecological principles mr. skirbst life science topic 18
TRANSCRIPT
![Page 1: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/1.jpg)
Ecological Principles
Mr. SkirbstLife Science
Topic 18
![Page 2: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/2.jpg)
Ecology
![Page 3: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/3.jpg)
Ecology- Greek “oikos” – means
household or home
![Page 4: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/4.jpg)
Ecology- Greek “oikos” – means
household or home- It is the study of the
“households” of Earth
![Page 5: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/5.jpg)
Ecology- Greek “oikos” – means
household or home- It is the study of the
“households” of Earth- Involves relationships within
ecosystems
![Page 6: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/6.jpg)
Ecosystem
![Page 7: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/7.jpg)
Ecosystem- An area where biotic (living)
and abiotic (non-living) factors interact
![Page 8: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/8.jpg)
Ecosystem- An area where biotic (living)
and abiotic (non-living) factors interact
- Ex. Lake, swamp, river, ocean, forest, field, drop of water, etc.
![Page 9: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/9.jpg)
Community- Biotic part of an ecosystem
![Page 10: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/10.jpg)
Community- Biotic part of an ecosystem
- Ex. Plants or animals living together in an area
![Page 11: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/11.jpg)
Niche- The specific role of an
organism in an ecosystem
![Page 12: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/12.jpg)
Population
![Page 13: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/13.jpg)
Population- Group of similar organisms in
an area
![Page 14: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/14.jpg)
Population- Group of similar organisms in
an area
- Ex. All the ants; worms; grass; etc. in an area
![Page 15: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/15.jpg)
Population Density
![Page 16: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/16.jpg)
Population Density- Number of organisms
per unit area
![Page 17: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/17.jpg)
Population Density- Number of organisms
per unit areaDensity = # organisms/
square unitsD = N/S
![Page 18: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/18.jpg)
Population Growth
![Page 19: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/19.jpg)
Population Growth
![Page 20: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/20.jpg)
Population Growth
![Page 21: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/21.jpg)
Population Growth- Related to birth & mortality
![Page 22: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/22.jpg)
Population Growth- Related to birth & mortality- Exponential growth produces a
“J-shaped” population curve
![Page 23: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/23.jpg)
Population Graph
1 2 3 4 5 6 70
10
20
30
40
50
60
70
![Page 24: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/24.jpg)
Population Growth- Related to birth & mortality- Exponential growth produces a
“J-shaped” population curveCompetition – struggle for
resources (predators, prey, habitat loss)
![Page 25: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/25.jpg)
Population Graph
1 2 3 4 5 6 70
5
10
15
20
25
![Page 26: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/26.jpg)
Energy Flow
![Page 27: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/27.jpg)
Energy Flow
![Page 28: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/28.jpg)
Energy Flow
![Page 29: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/29.jpg)
Energy Flow
![Page 30: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/30.jpg)
Energy Flow
![Page 31: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/31.jpg)
Energy Flow
![Page 32: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/32.jpg)
Energy Flow
![Page 33: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/33.jpg)
Energy Flow
![Page 34: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/34.jpg)
Energy Flow- Producers: change sun energy
into chemical energy (Ex. Plants and plant-like
protists)
![Page 35: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/35.jpg)
Energy Flow- Consumer: change chemical
energy to kinetic energy- They “consume” other
organisms
![Page 36: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/36.jpg)
Energy Flow- Consumer: change chemical
energy to kinetic energy- They “consume” other
organismsPrimary - herbivores
![Page 37: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/37.jpg)
Energy Flow- Consumer: change chemical
energy to kinetic energy- They “consume” other
organismsPrimary – herbivoresSecondary - carnivores or
omnivores
![Page 38: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/38.jpg)
Energy Flow- Decomposer: recycle remains
of other organisms
![Page 39: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/39.jpg)
Energy Flow- Energy Pyramid: shows flow of
energy from one level to another
Producers
Primary Consumer
Secondary Consumer
Decom
pose
rs
Tertiary Consumer
![Page 40: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/40.jpg)
Energy Flow- Food Chain: transfer of energy
from one organism to another
![Page 41: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/41.jpg)
Energy Flow- Food Chain: transfer of energy
from one organism to another
![Page 42: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/42.jpg)
Energy Flow- Food Chain: transfer of energy
from one organism to another
![Page 43: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/43.jpg)
Energy Flow- Food Chain: transfer of energy
from one organism to another
![Page 44: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/44.jpg)
Energy Flow- Food Web: overlapping food
chains
![Page 45: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/45.jpg)
Population GraphCreate a population graph with the data:
Year: Population: 1 8 2 16 3 32 4 64 5 120 6 200
![Page 46: Ecological Principles Mr. Skirbst Life Science Topic 18](https://reader038.vdocuments.site/reader038/viewer/2022110210/56649e7c5503460f94b7e3d1/html5/thumbnails/46.jpg)
Population Graph
1 2 3 4 5 60
50
100
150
200
250
TIME (Years)
POPU
LATI
ON
(Ind
ivid
uals
)Name, Date