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DataSheet

VIEWS: 10 PAGES: 12

									Data Sheet for entering and charting track and gait data
 1) Enter data in shaded area.
 2) View results in track and gait chart
 3) Copy selected measurement to discriminant analysis (DA) work sheet
 4) Add columns with derived or composite indicators as desired (eg, summing W&L may discriminate better than either alone)

                                                                Center
Species A      Length     Width      Stride     Straddle       Straddle Substrate W/L Ratio W+L
                (mm)      (mm)        (in)         (in)           (in)            (derived) (derived)
Elk
           1        100         80                         .              Dirt          0.80       180
           2         90         78                         .              Dirt          0.87       168
           3        108         90         59       11.5            8.0   Dirt          0.83       198
           4        106         77         50       9.75            6.7   Snow          0.73       183
           5        105         85         55          9            5.7   Snow          0.81       190
           6        100         75         51        9.5            6.6   Snow          0.75       175
           7        105         85         49       10.2            6.9   Snow          0.81       190
           8         98         73         47        9.3            6.4   Snow          0.74       171
           9        101         89       48.5         10            6.5   Snow          0.88       190
          10        102         78       45.5          9            5.9   Snow          0.76       180
          11         99         81         54       9.25            6.1   Snow          0.82       180
          12         96         74         48        9.5            6.6   Snow          0.77       170
          13        101         86       49.5          9            5.6   Snow          0.85       187
          14         94         70         63          8            5.3   Snow          0.74       164
          15                               62      12.75           12.8   Snow    .            .
          16                               45          9            9.0   Snow    .            .
          17                               57       9.75            9.8   Snow    .            .
          18                               56        9.2            9.2   Snow    .            .
          19                                               .                      .            .
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        43                                                                 .           .
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        46                                             .                   .           .
        47                                             .                   .           .
MEAN             100.4      80.1      52.5       9.7         7.3                0.80       180.4
SD                 4.9       6.2       5.7       1.1         2.0                0.05         9.9
Min               90.0      70.0      45.0       8.0         5.3                0.73       164.0
Max              108.0      90.0      63.0      12.8        12.8                0.88       198.0
Range             18.0      20.0      18.0       4.8         7.5                0.15        34.0

Species B
                                                       Center
Bison        Length   Width     Stride     Straddle               Substrate W/L Ratio W+L
                                                       Straddle (est)
         1        125       145         68      11.5          5.8 Snow           1.16     270
         2        145       162         95      11.5          5.1 Snow           1.12     307
         3        150       150         65        11          5.1 Snow           1.00     300
         4        155       155         61      10.5          4.4 Snow           1.00     310
         5        130       148                        .          Dirt           1.14     278
         6        118       120       44.5      11.5          6.8 Snow           1.02     238
         7        131       130         63      11.6          6.5 Snow           0.99     261
         8        131       130         63      11.6          6.5 Snow           0.99     261
         9        118       120                        .          Snow           1.02     238
        10        151       149         64      13.5          7.7 Snow           0.99     300
        11        110       100       51.3      11.7          7.8 Dirt           0.91     210
        12        128       120         54      10.8          6.1 Dirt           0.94     248
        13        110       100                        .          Dirt           0.91     210
        14        135       137         67        13          7.6 Snow           1.01     272
        15        128       125         56     10.75          5.8 Snow           0.98     253
        16        150       140       67.8        16        10.5 Snow            0.93     290
        17        150       148                        .          Snow           0.99     298
        18        140       125         61       7.5          2.6 Dirt           0.89     265
        19        130       128                        .          Dirt           0.98     258
        20                              60        13        13.0 Snow       .         .
        21                                                                  .         .
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        40                                 .          .          .
MEAN         133.4   133.3   62.7   11.7        6.8       1.00       266.7
SD            14.0    17.3   11.1    1.8        2.5       0.07        30.0
MIN          110.0   100.0   44.5    7.5        2.6       0.89       210.0
MAX          155.0   162.0   95.0   16.0       13.0       1.16       310.0
Range         45.0    62.0   50.5    8.5       10.4       0.27       100.0
discriminate better than either alone).
Instructions:
1) Copy selected measure on species A in second column, copy sepcies name in first column
2) Repeat for species B
3) Sort B & C on Measure
4) Enter shaded column labels
5) View results in DA chart (You may need to change the X axis label).

          Measure      Species A Species B Cumlative Count    Cumulative Percent
Species   Length (mm) Elk         Bison     Elk      Bison    Elk       Bison
Elk                 90          1         0        1       19        7%   #N/A
Elk                 94          1         0        2       19      14%    #N/A
Elk                 96          1         0        3       19      21%    #N/A
Elk                 98          1         0        4       19      29%    #N/A
Elk                 99          1         0        5       19      36%    #N/A
Elk                100          1         0        6       19      43%    #N/A
Elk                100          1         0        7       19      50%    #N/A
Elk                101          1         0        8       19      57%    #N/A
Elk                101          1         0        9       19      64%    #N/A
Elk                102          1         0       10       19      71%    #N/A
Elk                105          1         0       11       19      79%    #N/A
Elk                105          1         0       12       19      86%    #N/A
Elk                106          1         0       13       19      93%    #N/A
Elk                108          1         0       14       19     100%    #N/A
Bison              110          0         1       14       19    #N/A       100%
Bison              110          0         1       14       18    #N/A        95%
Bison              118          0         1       14       17    #N/A        89%
Bison              118          0         1       14       16    #N/A        84%
Bison              125          0         1       14       15    #N/A        79%
Bison              128          0         1       14       14    #N/A        74%
Bison              128          0         1       14       13    #N/A        68%
Bison              130          0         1       14       12    #N/A        63%
Bison              130          0         1       14       11    #N/A        58%
Bison              131          0         1       14       10    #N/A        53%
Bison              131          0         1       14        9    #N/A        47%
Bison              135          0         1       14        8    #N/A        42%
Bison              140          0         1       14        7    #N/A        37%
Bison              145          0         1       14        6    #N/A        32%
Bison              150          0         1       14        5    #N/A        26%
Bison              150          0         1       14        4    #N/A        21%
Bison              150          0         1       14        3    #N/A        16%
Bison              151          0         1       14        2    #N/A        11%
Bison              155          0         1       14        1    #N/A         5%
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
                                0         0       14        0    #N/A     #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
0   0   14   0   #N/A   #N/A
         0    0   14   0   #N/A   #N/A
         0    0   14   0   #N/A   #N/A
         0    0   14   0   #N/A   #N/A
         0    0   14   0   #N/A   #N/A
TOTAL   14   19
                             Hind Track Width-Length Diagram
             180


             160


             140
Width (mm)




             120


             100


             80
                                                               Elk
             60                                                Bison

             40
                   40   60      80    100    120   140   160         180
                                     Length (mm)
                          Walking Gait Stride-Straddle Diagram

                18


                16


                14
Straddle (in)




                12


                10


                 8
                                                           Elk
                                                           Bison
                 6
                     30   40    50      60       70   80         90   100
                                        Stride (in)
                                             Discriminant Analysis
                               100%
Percent Correctly Identified




                               80%                                         Elk
                                                                           Bison

                               60%


                               40%


                               20%


                                0%
                                      80   100         120           140         160
                                                 Track Length (mm)
NOTES         Describe the purpose, sampling frame, measurement protocol, and limitations of the study

Purpose       Conduct a discriminant analysis of elk and bison tracks and walking gait
              Done as part of Halfpenny's snow ecology class.


Sampling      Between the Bison Ranch and Soda Butte, I stopped at approximately every other pullout, prime bison winter rang
              My intent was to try to get the full range of bison variability as I had seen multi-age/sex herds in the area.
              For bull elk, I primarily sampled from the Thunderer area
              Time prevented sampling from areas with cows and calves but it was more important to oversample large elk

Protocol      Selected clear hind tracks with no evidence of enlargement by melting or other distortion
              Selected walking strides with no evidence of turning that would widen the straddle measurement
              Selected only one set of tracks from each individual animal
              Take minimum outline track measurements

Limitations   Unfortunately I could not locate or safely get close to the herds.
              Thus the variability of the bison measurements is probably constrained because the solitary animals
              I observed near the road often appeared to be young bulls
              In a few places the snow depth made minimum outline measurements difficult
              The focus on bull elk limits the use of those data for purposes other than the primary purpose of the study
her pullout, prime bison winter range.
age/sex herds in the area.

portant to oversample large elk


dle measurement




e the solitary animals


imary purpose of the study

								
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