Part of 2A:
Levels of Organization in the biosphere:
label: http://youtu.be/srbuqpr6jUw
Biosphere, Biome, Ecosystem, Community, Population, Individual
Environment: all conditions or factors surrounding an organism
http://youtu.be/E1pp_7-yTN4
Biotic Factors-_________________________________________________________
examples include:
1.
___________________________________
2.
___________________________________
3.
___________________________________
Abiotic Factors - ____________________________________________________
examples include:
1.
___________________________________
2.
___________________________________
3.
___________________________________
1
Energy, Producers, and Consumers
Examples of: http://youtu.be/GnffYkN1UDk
1a. Producers :________________________________________________
1b. Herbivores: organisms that obtain energy by eating plant leaves, roots, seeds,
and or fruits
Example of Herbivores: _____________________________________________
2. Carnivores: organisms that obtain energy by eating animals
Example of
Carnivores:________________________________________________
3. Omnivores: http://youtu.be/pPQjI22vV2w
organisms that obtain energy by eating both plants and animals
Example of Omnivores: :
_____________________________________________
4. Decomposers: http://youtu.be/dEq5-FbCYjo
organisms that break down and obtain energy from dead organic matter. GIVES
THE SOIL A LOT OF NUTRITION!
Example of Decomposers: ____________________________________________
5.Detritivores (although movie calls it decomposers) http://youtu.be/Z6V0a_7N1Mw
organisms that feed on detritus which are the small pieces of dead and decaying
plant and animal remains
Example of Detritivores: ____ earthworms, snails, shrimp, mites, crabs
6. Scavengers: animals that consume the carcasses of other animals
Example of Scavengers: _____ vulture, hyena ___________
2
Trophic Levels- the position an organism occupies in a food chain http://youtu.be/wGfOoRrICto
http://youtu.be/v6ubvEJ3KGM
Temporarily stop the video at 4:58 and label the trophic levels in the food chain.
Then finish the video and fill in this page.
Food chain: a series of steps in an ecosystem in which organisms _________________ energy
by eating and being eaten
1st TL
2nd TL
producer
3rd TL
2nd order
Consumer
flagfish
8000 cal
4th TL
5th TL
aligator
80 cal
The bottom of every food pyramid are the producers. These organisms rely on the SUN. Without the
bottom level, we would not exist. THE ULTIMATE SOURCE OF ENERGY FOR ALL ORGANISMS
IS THE __________. (Except organisms that live deep in the ocean – chemosynthesis)
Food Web: network of complex interactions formed by the feeding relationships
among the various organisms in an ecosystem; a food web can also be defined as a
series of interconnected food chains in an ecosystem.
3
Some might make an analogy of decomposers being like earth's "recycling center".
Summarize the importance of decomposers and detritivores in food webs
Define: http://youtu.be/1uPESFeQda4
Habitat: _____________________________________________________
_____________________________________________________________
Biomes – LARGE MAJOR ECOSYSTEMS
Biomes are described in terms of abiotic factors like climate and soil type,
and biotic factors like plant and animal life.
Watch the videos and fill in the table on the final 2 pages
Tundra:
http://www.youtube.com/watch?v=orPgEvVab2M
taiga:
http://www.youtube.com/watch?v=h4tQ5jGJ9cQ
Biomes of the world:
http://www.youtube.com/watch?v=P22epOXwJHg
wetlands
http://www.youtube.com/watch?v=ft_2nj96jLM
4
bill nye wetlands
http://www.youtube.com/watch?v=BeUPbGWg2KU
Biome
Details & Climate
(abiotic factors)
Type of Plants
(biotic factors)
Types of Animals
(biotic factors)
Tropical Rain Forest
Tropical Grassland/
Savanna/Shrubland
Desert
Temperate Grassland
Temperate Forest
(Deciduous Forest)
Northwestern
Coniferous Forest
(aka Temperate Rain
Forest)
Taiga (Boreal Forest)
“boreal” from the
Greek meaning
northern
Tundra
5
Ecological Succession - http://youtu.be/mjqHbjOou54
Primary Succession – ______________________________________________________
- at the start, there is nothing but bare _______
How is new land created or exposed?__________________________________________
__________________________________________________________________
Pioneer Species – ______________________________________________________
examples:________________________________________
Climax Community - _____________________________________________________
Secondary Succession – occurs when
______________________________________________________________________
(not starting with bare rock)
6