Transcript
Welcome Back Future Scientists!
http://www.learnnc.org/lp/pages/4769
http://www.learnnc.org/lp/pages/4769
Part I- Introduction!
GET OUT YOUR BRAINPOP SHEETS AND ECOLOGY GO NOTES!
Who studies Ecology? Ecologist
The study of organisms and their environment.
Biotic FactorsLiving
(bio=life)
Example- Plants, animals, predators.
Abiotic FactorsNon-living (“a”-
opposite)
Example- Sun, dirt temperature.
5 Levels of Ecology
5 1. Organism2. Population3. Community4. Ecosystem5. Biosphere
1. Organism1 living thing.
Example- 1 giraffe
2. Population2 or more of the same species
Example- 2 or more giraffes
3. Community 2 or more different species, living
Example- Zebras, giraffes and trees
4. Ecosystem
Living and nonliving
Examples- zebra, giraffes, tree, sun, water, dirt.
5. BiosphereCan support life
Example: sphere- circle bio- life Eart
h!
BrainPop!Ecosystems!!
INTERACTIONS IN ECOLOGY
1. COMPETITIONHABITAT
WHERE IT LIVES
EXAMPLE?IN A TREE
NICHE
• WHAT IT DOES (IT’S JOB)
• EXAMPLE?• COLLECT
ACORNS
What reduces Competition?By having organisms with different niches
2. PREDATOR/PREYPREDATOR
EATSExample?
PREYGETS EATEN
Example?
Prey/Predator CyclePREY PRED PREY
PRED
WHY? (GETTING
EATEN)
(NO FOOD)
WHY? WHY?
(NO EATERS)
(HAVE LOTS OF FOOD!)
CYCLIC REPRESENTATION OF PREY/PREDATOR RELATIONSHIP
The cycle is:Density Dependent
Depends on the size of the population
3. SYMBIOSISClose and often long-term interactions
between different species.
THREE different types of symbiotic relationships.
BrainPop!Symbiosis
MUTUALISMBOTH ORGANISMS BENEFIT
EVERYONE IS HAPPY!!!!
Example?
Mutualism Ex.Flowers and their pollinators Honey Guide and Honey BadgerHumans and E.coli
COMMENSALISM1 BENEFITS, 1 IS UNAFFECTED
Example?
Commensalism Ex.Barnacles on whalesFish hitching a ride on sharksClownfish and sea anemone (could be
mutualistic)Spiders build their webs on plants
PARASITISM1 BENEFITS, 1 HARMED
EXAMPLES?
**PARASITES MUST HAVE HOSTS- IF THE HOST DIES, SO DO THEY.**
TicksFleasLeechMosquito
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