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*To*: Multiple recipients of list <dinosaur@lepomis.psych.upenn.edu>*Subject*: Re: a question about reproductive strategies, another about*From*: Stan Friesen <swf@ElSegundoCA.ATTGIS.COM>*Date*: Fri, 16 Feb 1996 15:32:29 -0500*Reply-to*: swf@ElSegundoCA.ATTGIS.COM*Sender*: dinosaur@lepomis.psych.upenn.edu

From: JNorton@MAILBOX.UNE.EDU > I have two questions for the group: > > 1) When discussing dinosaur reproductive strategies, the terms > "r-strategy" and "K-strategy" are used. I understand the definition of the > terms (I think) but want to know what the "r-" and the "K-" stand for, if > anything. They stand for the traditional names of the relevant parameters of the logistic growth equation. Using ' to mean the derivative, the equation is usually written as (p is population size => p' is the change in population size): p' = p*r*K/(K-p) In this equation, r is called the intrinsic rate of increase, and K is called the carrying capacity (ostensibly of the environment). For more information on this, look in any entry level college text on population biology. swf@elsegundoca.attgis.com sarima@netcom.com The peace of God be with you.

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