ecology: interspecific competition
TRANSCRIPT
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BRENT BONIOR | PAULA MARIE LLIDO | EARL JUDD SULLANO | JAEN KIETH ROCIOS |
AEMEE ROZANNE UY | JINSHEEN YOUNG| NOVEH TIU
INTERSPECIFICCOMPETITION
CHAPTER 14
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14.1 INTERSPECIFICCOMPETIT ION INVOLVES TWO OR MORE SPECIES
THAT SEEK A COMMON RESOURCE IN SHORT SUPPLY (AS IN INTRASPECIFIC COMPETITION)
BOTH KINDS OF COMPETITION MAY TAKE PLACE SIMULTANEOUSLY
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INTRASPECIFIC OR INTERSPECIFIC COMPETITION?
Squirrels compete among themselves for acorns during a year when oak
trees produce fewer acorns.At the same time, wild turkey, blue jay
and mice vie for the same resource, the acorns.
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EXPLOITATION INTERFERENCE
INTERSPECIFIC COMPETITION TAKES TWO FORM:
organisms use up resources directly which will no longer be available for other species to use.one organism prevents other organisms from using the resource.
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INTERACTIONS IN INTERSPECIFIC COMPETITION(THOMAS SCHOENER)CONSUMPTION
PREEMPTIVE(THOMAS SCHOONER)OVERGROWTH
CHEMICALTERRITORIAL
ENCOUNTER
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CONSUMPTION COMPETITIONOccurs when individuals of one species inhibit
another species by consuming a shared resource
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Occurs primary among sessile organisms where the competition by one individual precludes establishment (occupation) by others
PREEMPTIVE COMPETITION
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OVERGROWTH COMPETITIONoccurs when one
organism literally grows over another (with or without physical contact), inhibiting access to some essential resource
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CHEMICAL COMPETITIONchemical growth
inhibitors or toxins released by an individual inhibit or kill other species Ex. Sunflower (allelopathic)
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TERRITORIAL COMPETITIONResults from the
behavioral exclusion of others from a specific space that is defended as a territory
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ENCOUNTER COMPETITIONwhen nonterritorial
meetings between individuals negatively affect one or both of the participant species
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WHICH IS WHICH?
CONSUMPTION PREEMPTIVE OVERGROWTH CHEMICAL TERRITORIAL ENCOUNTER
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WHICH IS WHICH?
CONSUMPTION PREEMPTIVE OVERGROWTH CHEMICAL TERRITORIAL ENCOUNTER
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WHICH IS WHICH?
CONSUMPTION PREEMPTIVE OVERGROWTH CHEMICAL TERRITORIAL ENCOUNTER
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