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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
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
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.
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.
INTERACTIONS IN INTERSPECIFIC COMPETITION(THOMAS SCHOENER)CONSUMPTION
PREEMPTIVE(THOMAS SCHOONER)OVERGROWTH
CHEMICALTERRITORIAL
ENCOUNTER
CONSUMPTION COMPETITIONOccurs when individuals of one species inhibit
another species by consuming a shared resource
Occurs primary among sessile organisms where the competition by one individual precludes establishment (occupation) by others
PREEMPTIVE COMPETITION
OVERGROWTH COMPETITIONoccurs when one
organism literally grows over another (with or without physical contact), inhibiting access to some essential resource
CHEMICAL COMPETITIONchemical growth
inhibitors or toxins released by an individual inhibit or kill other species Ex. Sunflower (allelopathic)
TERRITORIAL COMPETITIONResults from the
behavioral exclusion of others from a specific space that is defended as a territory
ENCOUNTER COMPETITIONwhen nonterritorial
meetings between individuals negatively affect one or both of the participant species
WHICH IS WHICH?
CONSUMPTION PREEMPTIVE OVERGROWTH CHEMICAL TERRITORIAL ENCOUNTER
WHICH IS WHICH?
CONSUMPTION PREEMPTIVE OVERGROWTH CHEMICAL TERRITORIAL ENCOUNTER
WHICH IS WHICH?
CONSUMPTION PREEMPTIVE OVERGROWTH CHEMICAL TERRITORIAL ENCOUNTER