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z <br />Table 4 shows four estimators (E).for the sampled area: 1. enumerated <br />population (all marked animals caught by live traps plus those unmarked caught <br />sequentially 6y the kill traps); 2. calculated number at end of 6th day of <br />live trapping by employing the modified Peterson Index method; 3. calculated <br />number at end of 6th day of live trapping by employing program CAPTURE; and <br />4. calculated number employing the modified Peterson Index to numbers of <br />marked and unmarked caught by snap traps in the sequential kill-trap operation. <br />Numbers shown are not numbers per unit area, but only indices. In order to <br />express numbers per unit area, the effective trapping area for each species <br />in relation to the size of the grid or transect line would have to be defined <br />The effective trapping area would, of course, be larger than the physical <br />dimensions of the grid or transect line. Measures of distances that the <br />animals were moving at time of sampling would have to be used to describe <br />a width of boundary necessary to enclose the effective trapping area. <br />Because I do not know the format of the information on animal numbers that <br />you collected more recently, I'm not sure that these data sets are in the <br />best possible form to meet your immediate needs. <br />Please call if I can be of more help. <br />rSilncerely yours, ~ ,, - Q <br />~J tA.C Q.SZ~ ~ `~ <br />Vincent H. Reid <br />Wildlife Biologist <br />Enclosures <br />7 <br />~,;~; <br />l,.y `. '. <br />u.-.r <br />~t -~~ <br />,.riiw <br />~'u. ,'. <br />.~ <br />i <br />~-- <br />.~-~o;- <br />.,;..; . <br />=~ ~.., <br />~~ <br />• <br />q.:= •: <br />r~^ <br />"--~ <br />,- ~ . <br />ti. <br />i-, <br />~; <br />.a. <br />.~ . <br />a'r.- <br />;~~... <br />~R <br />• <br /> <br />