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P. 68

62



                                  ("   V =    l x m
                                                  x
                                          x
                           R  &6   	   
   " ".	 L0,!0'L  (net reproductive rate of increase)
                            0
                                               ∞
                                  ("     R 0  =  ∑ ml x  x

                                               x =1
                                 H       R 0  > 1    % 
 
1  	  . /  +7   %   H	(5

                                         R 0  < 1    % 
 
1  	  (    %   H	(5
                                         R 0  = 1 5    
   . /   6  (        % 
   %   H	(5
                          T   &6    "0 	"   
 0   (cohort generation time)
                            c
                                               ∞
                                              ∑ ml x  x x
                                  ("  T   c  =  x  =1
                                                ∞
                                               ∑ ml x  x
                                               x  =1
                           r   &6  &  !	    ! 'L f
   . / '  .	 L0
    (capacity of increase)
                           c
                                              ln R
                               ("        r =     0
                                          c
                                               T c
                          λ  &6   	   
   . / ' / ' *    (finite rate of increase)
                                  ("  λ    =  anti log e  r
                                                      c
                           DT &6    "     
   . /    % 
     !   '   (population doubling time)
                                               log  2
                                  ("     DT =     e
                                                 r c


                   4.2  #	$  	8    P  X;"	$	 V  !"   : ;  (Data presentation)



                                                                                  +/

                                                                      0
                          
  $+
4      %          *    7"      2 %( &6 %('    .6/ $+
4  biological
                                                                            0
                                                                                /
                   life table    %0(' /!   .6/ $+
4 H+  partial ecological life table

                        4.2.1  Biological life table
                                 1 5   +/     "0 '  
	  *1     100 V   '1 
     * #*           /"
                                                                                 1


                                 )

                                                                                      1

                   '
 	   (   (
   * 2   #  !)   "     K *     	   Y  	"    * #*     	   Y  	"'        /
                    0
                        +7



                                                            0
                                                                                         1
                    
 (   * 
     * #*    5 '
 	 *  "(   5     	   Y  	"  "  (       '5(

                                                                                              )
                                         1
                               	7
                                                  0
                                                                                                  /


                   !        %    ## biological  life  table     &1    &  '  !H        5(


                                                                                    0

                    " ".	 L0,!0'L   (net  reproductive  rate  of  increase  =  R )  %   " "   
 0   (cohort
                                                                               	/
                                                                           o
                                                         /
                   generation  time  =  T )   	   
   . / ' '*   (finite  rate  of    increase  =  λ)     &


                                        c
                   !	    ! 'L f
   . / '  .	 L0
    (innate capacity of increase = r )       "     
   . /
                                                                               c
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