WFSC 403 6th Edition Lecture 13 Outline of Last Lecture I Basic Concepts a BP II Theory a Equations b Alpha c Beta d Phase planes e Isoclines i Tilman s Model III Lab Studies IV Field Studies a Paradox of plankton Outline of Current Lecture I BP a Have to have some limited resources II Concept in the field a Important III Mechanisms for avoiding competition IV Evolution of competition ability a r b K c Alpha V Apparent competition and indirect effects a Cause effect correlation Current Lecture Error on page 182 first line of text the sentence is supposed to say fewer larger seeds instead it says fewer smaller seeds Concept in the field o How do all of these closely related species survive coexists Competition is rare and competition is common Fig 12 14 These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Idea on how fundamental niche the dotted line is being out competed so shrunken down to shaded area making it a realized niche o Is there such thing as an empty niche Resources not being used No they are always being used just sometimes not by who you are looking for Fig 12 19 How to make it b Close in Mother nature exploit resources morphological change Allopathic different habitat o Morphology Darwin finches Character displacement Behavioral Chemical o Cause effect Ecologists make up stories for things to help them prove something manipulated data Kind of like statistical data In what way did we think of r and K before S growth Mouse could be a r population while elephant is k population Change it and it could be a vole is r population while kangaroo rate is k o r and K are changing depending on what population you are looking at o Relative to who what is being selected Put together population size and competition exclusion principle o If exclude population size then decrease geographic distribution excluded Why expand so far then Too hot too cold too wet to dry Conditions o Biotic sympatric fluctuation changes year to year If the pop goes down too much to long could loose population
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