Welcome Back Future Scientists!. .

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