Ecology Interactions Unit Competition

• Remember! – Working together, and helping everyone to reach

their full potential will benefit everyone in this class. We are all interconnected.

• Keep an eye out for “The-Owl” and raise your hand as soon as you see him.– He will be hiding somewhere in the slideshow

“Hoot, Hoot”“Good Luck!”

• Keep an eye out for “The-Owl” and raise your hand as soon as you see him.– He will be hiding somewhere in the slideshow

“Hoot, Hoot”“Good Luck!”

• Area of Focus: Competition.

• What is competition?

• Define the word competition as it might be related to the field of ecology.

• Competition: The interaction between organisms or species, in which the fitness of one is lowered by the presence of another.

• Competition: The interaction between organisms or species, in which the fitness of one is lowered by the presence of another.

Fitness:

• Competition: The interaction between organisms or species, in which the fitness of one is lowered by the presence of another.

Fitness: Good health.

• Four types of competition– -– -– -– -• -

• Interspecific competition: Over resources between different species.

• Interspecific competition: Over resources between different species.

• Intraspecific competition: The same species compete for resources.

• Intraspecific competition: The same species compete for resources.

• Activity! A little interspecific competition.– Note – This is different as we are not competing over

resources. More fun however.– Visit

http://www.mathsisfun.com/games/connect4.html

• Activity! Try and build the tallest Domino tower possible with the amount given.– I will visit each group to help / see how you are

doing /

• Activity! Try and build the tallest Domino tower possible with the amount given.– I will visit each group to help / see how you are

doing / interfere and disrupt the construction without you knowing that I am interfering.

• Interference competition: fighting / disrupting.

• Interference competition: fighting / disrupting.

• Birds will often chase other birds away from habitat.

• Fish will also protect their territory and chase away other fish.

• Exploitative: Share resources.

• Exploitative: Share resources.

• In a pack of wolves, there is a strict hierarchy of who feeds first.

• In a pack of wolves, there is a strict hierarchy of who feeds first.– First the alpha male or female will eat.

• In a pack of wolves, there is a strict hierarchy of who feeds first.– First the alpha male or female will eat.– Then the other wolves of the group.

• In a pack of wolves, there is a strict hierarchy of who feeds first.– First the alpha male or female will eat.– Then the other wolves of the group. – Each wolf has to respect it’s position in ranking, if not

they will be corrected by the wolves that are higher in ranking.

• Theory– Competitive Exclusion: One thrives, the other goes

extinct.• No two species with the same job can coexist.

• Competitive exclusion theory: All organisms exist in competition for available resources.

• Competitive exclusion theory: All organisms exist in competition for available resources.– Those that create a competitive advantage will

flourish at the expense of the less competitive.

• Competitive exclusion theory: All organisms exist in competition for available resources.– Those that create a competitive advantage will

flourish at the expense of the less competitive.– No two organisms can have the same niche.

• Competitive exclusion theory: All organisms exist in competition for available resources.– Those that create a competitive advantage will

flourish at the expense of the less competitive.– No two organisms can have the same niche.– One species thrives,

• Competitive exclusion theory: All organisms exist in competition for available resources.– Those that create a competitive advantage will

flourish at the expense of the less competitive.– No two organisms can have the same niche.– One species thrives, the other goes extinct.

Paramecium Species A

Paramecium Species A

Paramecium Species B

Population graphs when grown separately

When introduced to the same environment

Paramecium species B population declines until extinction.

• Competition Activity Quiz in Notes

• Activity Quiz! 1-10 + bonus• Name the type of competition.• Interspecific, Intraspecific, Interference,

Exploitative

1

2

3

4

5

6

7

8

9

10

*11 Bonus “Which pro wrestler am I?”

“I can’t stand these Quiz Wiz

things!”

• Answers to Quiz – Types of competition.

1

1

2

2

3

Intraspecific competition: The same species compete for resources.

3

4

5

5 Intraspecific

6

Interference competition: fighting / disrupting.

6

7

Exploitative: Sharing resources.7

8

Interspecific competition: Over resources between different species.

8

9

9 Interference competition: fighting / disrupting.

9 Interference competition: fighting / disrupting.

10

10 Interspecific competition: Over resources between different species.

*11 Bonus “Which pro wrestler am I?”

“I can’t stand these Quiz Wiz

things!”