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COMMUNITIES. HOW DO COMMUNITIES OF ORGANISMS INTERACT WITH EACH OTHER ?. Communities. Definition groups of different populations of organisms living together in the same place at the same time Communities interact through competition, predation, and symbiotic relationships.

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Communities

COMMUNITIES

HOW DO COMMUNITIES OF ORGANISMS INTERACT WITH EACH OTHER?


Communities1
Communities

Definition

  • groups of different populations of organisms living together in the same place at the same time

  • Communities interact through competition, predation, and symbiotic relationships


What must all organisms in a community have
What must all organisms in a community have?

  • Habitat – Where the organism lives.

    • Ex. Bird lives in the nest of a tree.

  • Niche - The organism’s role in the community.

    • Ex. Scavenger, Predator, Prey


Watch the video clip and note the types of relationships that exist in communities
Watch the video clip and note the types of relationships that exist in communities

  • http://www.youtube.com/watch?v=D1aRSeT-mQE


Not enough for all
NOT ENOUGH FOR ALL that exist in communities

  • Hey hey hey I see some nice fruits on that tree but it looks like those finches bird are also have their eyes on it. I don’t even think there are enough for our little blue jay flock let alone them. LET’S GET IT!


1 competition fight for resources
1-COMPETITION: FIGHT FOR RESOURCES that exist in communities

  • INTRASPECIFIC- competition within the SAME species

  • INTERSPECIFIC- competition among different species


Hide or i will get you
HIDE OR I WILL GET YOU that exist in communities

  • I AM ALWAYS IN FEAR OF THAT JAGUAR COMING OUT OF THE BLUE TO KILL ME FOR FOOD, BUT I HAVE TO LOOK FOR SOMETHING TO EAT… A HYENA GETS HUNGRY TOO!!


2 predation
2-PREDATION that exist in communities

  • PREDATOR- PREY RELATIONSHIP

    Organisms in a community must interact in a predator-prey relationship to obtain food for survival.

    Predator/prey relationships are also a

    means of population control in communities


Predator prey graph
Predator/Prey Graph that exist in communities

Predator/prey relationship can control populations


3 symbiotic relationships
3-SYMBIOTIC RELATIONSHIPS that exist in communities

SYMBIOSIS: CLOSE ECOLOGICAL RELATIONSHIP BETWEEN TWO OR MORE ORGANISMS OF A DIFFERENT SPECIES


You are my friend aren t you
YOU ARE MY FRIEND…AREN’T YOU? that exist in communities

  • I FEEL THAT OUR FRIENDSHIP IS AN EQUAL PARTNERSHIP. YOU HELP ME WHEN I NEED IT AND LIKEWISE I HELP YOU. THIS RELATIONSHIP IS GREAT…WE ARE IN SYMBIOSIS


Mutualism relationship
MUTUALISM RELATIONSHIP that exist in communities

  • BOTH ORGANISMS BENEFIT FROM THE RELATIONSHIP

    • BACTERIA IN OUR STOMACH BACTERIA HELPS US DIGEST FOOD, BACTERIA HAS A HOME

    • ANTS LIVING ON APHIDS(PLANT) ANTS FEED ON SUGARY APHID, ANTS PROTECT THE PLANT


Sometimes i feel used
SOMETIMES I FEEL USED that exist in communities

  • YOU KNOW, WE ARE GOOD FRIENDS, BUT SOMETIMES I FEEL LIKE YOU ARE ASKING ME TO HELP YOU OUT ALL THE TIME…TESTS, HW, PROJECTS. I AM GETTING QUITE SICK OF IT AND FEEL HURT BY IT


Parasitism relationship
PARASITISM RELATIONSHIP that exist in communities

  • ONE ORGANISM BENEFITS THE OTHER IS HARMED

    • Virus infects a cell

    • Fleas on a dog

    • Mosquito bites us


I really don t care it doesn t bother me
I REALLY DON’T CARE, IT DOESN’T BOTHER ME that exist in communities

  • YOU CAN COPY MY WORK ALL YOU WANT, AS ALONG AS WE BOTH GET THE SAME GRADE


Commensalism relationship
COMMENSALISM RELATIONSHIP that exist in communities

  • ONE ORGANISM BENEFITS THE OTHER IS NOT HARMED

    • BARNACLES ON A WHALE’S BODY

    • REMORA FISH ATTACHES ITSELF TO A SHARK


Writing relationships in shorthand
WRITING RELATIONSHIPS IN SHORTHAND that exist in communities

  • MUTUALISM ( +/+ )

  • PARASITISM (+/ -)

  • COMMENSALISM ( +/ 0)


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