Chapter 7b Notes

Chapter 7b Notes - Predator Behavior, Prey Behavior and...

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Predator Behavior, Intertidal Comm Prey Behavior and unity Structure
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LEVELS OF OR Ecosy Comm Popul Indivi Organ s Org Ce Organ Mole GANIZATION stems unities ations duals ystems ans lls elles cules
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Higher Levels o • Predator behavior affect communities – Prey choice by predators abundance of different pr •P r e y behavior affects po communities – Selection imposed by pre and thereby distribution a rey species prey species f Organization s populations and affects distribution and ey species pulations and dators affects prey behavior nd abundance of different
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Intertidal nation zonation
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hysical and Biot Physical and Biot Intertidal Specie • Physical factors: – Wave action – Desiccation • Biotic factors: ompetition – Competition – Predation • Selection by physical and biotic factors influences evolution of behavior Factors Affect ic Factors Affect s’ Distributions
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Tides http Mean lower-low water (MLLW) ://oceanservice.noaa.gov/education/kits/tides/tides07_cycles.html
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Observ • Two common limpet spe intertidal zone in Centra Lottia digitalis tend to oc surfaces Maclintockia scabra pred surfaces ation cies “partition” the high l California cur higher and on vertical ominate on horizontal
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Maclintockia scabra 2 1 3 4
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Lottia digitalis
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Ques • What determines the diff these two similar limpet tion erences in distribution of species?
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Physical Factors a M. scabra “homes” and ther desiccation and heat toleran herefore free to occupy sun
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Chapter 7b Notes - Predator Behavior, Prey Behavior and...

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