Topic: Lab Assignment

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Type of paper:	Essay
Subject area:	Business
Academic level:	College
Style:	MLA
Size:	45.0 kB
Word count:	439 words/2 pages
Mark awarded:
Author:	Micha Frederick
Date submitted:	2008-11-18 15:54:10
Rating/Votes count:	4.00 / 2

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Tags:

species, report, problems, lab, assignment, Sample, Gould, chemestry, Sample Size, Upper Quartile, Punctuated Equilibrium, Pare

PLOT SAMPLING
1 . Raw data table
Species Diameters
Sample 1
Species 2 .93 1 .3
Species 5 .57
Species 6 1 .23 1 .89
Species 8 1 .66 1 .38 .53
Species 9 .76 2 .1
Sample 2
Species 1 1 .45 .67 .92 .43
Species 2 1 .58 .35
Species 4 .53
Species 5 .77 .43 .21
Species 6 .9
Species 7 .84 1 .4
Species 8 .55 2 .4
Species 9 1 .13 .45 .78 .67
Sample 3
Species 1 .32 .41 .33 1 .1
Species 4 .58 .83 .19
Species 6 .61 2 .21
Species 9 .96 1 .14
Sample 4
Species 2 3 .43 1 .6
Species 3 .45 .97
Species 5 .34 .88 .56
Species 6 1 .66
Species 8 .69 .54 1 .17
Sample 5
Species 1 1 .87 .54 .97
Species 2 .52 .32
Species 3 1 .64 .67 .79
Species 4 2 .6
Species 6 .51 .69 .72
Species 7 .89 1 .45 2 .3 .59
Species 9 .79 .67 1 .12
Most common species are : 1 , 2 , 6 , 8 , 9 .
2 . Density and frequency of the five most common species :
Density Number of species / Sum of all plot areas
Frequency Number of plots which have at least 1 ind / plots
Sum of all plot areas 0 .1 CH 5 0 .5 m2
For species 1 : Density 10 / 0 .5 20
Frequency 3 / 5 0 .6
Species Number Number of plots Density Frequency
Species 1 10 3 20 .6
Species 2 8 4 16 .8
Species 6 9 5 18 1
Species 8 8 3 16 .6
Species 9 11 4 22 .8
3 . Relative densities and relative frequencies for the five most common
species :
Relative Density Density /
Relative Frequency Frequency /
For species 1 : RD 20 / 92 0 ,22
RF .6 / 3 .8 0 ,16
Species Relative Density Relative Frequency
Species 1 .22 .16
Species 2 .17 .21
Species 6 .2 .26
Species 8 .17 .16
Species 9 .24 .21
4 . Dominance of species 1 :
Dominance Area covered by a species / Sum of all plot areas
pecies (0 ,5 Diameter )2
Diameters 1 ,45 0 ,67 0 ,92 0 ,43 0 ,32 0 ,41 0 ,33 1 ,10 1 ,87 0 ,54
Basal area 4 ,55 2 ,10 2 ,89 1 ,35 1 ,00 1 ,29 1 ,04 3 ,45 5 ,87 1 ,70 28 ,29
For species 1 : Dominance 28 ,29 cm2 / 0 ,5 m2 56 ,58 cm2 /1m2
6 . The most abundant are species 9 .
In 1 hectare there are 10 ,000 m2 . So , if there are 11 individuals on 0 .5
m2 , then on 1 ha there are 11 CH (10000 / 0 .5 220000 individuals .
7 . Values of density , dominance and frequency converted to relative
values in order to simplify the obviousness of species ' values part in
distribution and relative importance of each species in the community .
8 . One of the advantages of measuring frequency is that there are fewer
opportunities for observer bias due to inadequate or inconsistent...

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