Data Sources

The data sets referenced below have all been run on P1a and/or P2a . Most of them have definitive solutions which produce dynamic simulations similar to real life. In one or two cases the a solution is not clear-cut, a situation you will often encounter as you try to analyze real data.

  1. The Red Pine Cone Beetle from Mattson (1980 -- Table 1, Column 3, 10 observations per hectare: 1218, 7200, 1525, 2718, 1770, 1614, 1055, 3695, 500, 1000). It is advisable to divide numbers by 10 before entering them into P1a (see Tutorial #1 for details).
  2. Red Pine Cones from Mattson (1980 -- Table 1, Column 2, omit first observation so data matches cone beetle: 23632, 14636, 13006, 28615, 20039, 18755, 35419, 7189, 14131, 21544). Divide each observation by 10 before entry if you did so with cone beetle data.
  3. The eastern blackheaded budworm from Morris (1959 -- Table 1, Column 2, 12 records per 100 square meter foliage: 22, 112, 533, 225, 12, 3.1, 3.3, 31, 150, 237, 300, 183). Multiply each number by 10 before entering (see Tutorial #2 for details).
  4. Parasites of blackheaded budworm larvae from Morris (1959 -- Table 1, Column 2 3 / 100: 1.54, 10.08, 229.19, 218.25, 10.56, 0.96, 0.5 (assumed), 4.34, 15, 66.36, 132). Multiply data by 10 before entering.
  5. The sandhill crane from Buller (1979 -- Page 5, Table 3, columns 2 and 4: 20 counts of the total number of cranes estimated on the Platte River staging area in Nebraska: 147496, 125870, 136276, 142830, 101925, 156028, 80315, 123087, 123043, 169194, 154978, 193600, 207500, 183600, 195350, 177015, 227527, 153784, 219154, 159898). Divide each datum by 1000 before entering (see Tutorial #3 for details).
  6. The gypsy moth from Burgess and Baker (1938 -- Page 5, 24 records of egg clusters per acre: 5214, 5407, 2635, 3658, 4400, 3751, 3702, 2273, 4032, 2134, 2387, 402, 110, 50, 61, 127, 303, 722, 407, 66, 42, 112, 344, 181) (see Tutorial #4 for details).
  7. The cowpea weevil from Utida (1967 -- Data estimated from Fig 1A: 16, 294, 125, 250, 130, 213, 160, 200, 150, 180). Curvilinear R-function explains over 98% of the variation in the data.
  8. Paramecium from Gause (1934 -- Page 114, Table 3, Column 5 [mean], 12 records [ignore first 2 records]).
  9. The black-capped chickadee from Loery and Nichols (1985 -- Table 2, Column 2). Note stable equilibrium enforced by rapid feedback and damped return to equilibrium after disturbance due to introduction of the tufted titmouse in 1968.
  10. The pine looper from Klomp (1968 -- Page 99, Fig. 1). Data for two other caterpillars are also available from this figure. See also Table XII in Dempster (1975) and data for outbreak populations studied by F. Schwerdtfeger, as reported by Varley et al. (1973).
  11. The edible cockle studied by D. A. Hancock and reported by Dempster (1975 -- Page 87, Table XVI, sum of Columns 2, 3, and 4 = total cockle population sampled in May).
  12. The snowshoe hare from D. A. MacLulich, as reported by Berryman (1981 -- Page 62, Figure 3.2), and many other places.
  13. The larch budmoth from Baltensweiler (1991 -- Page 149, Table 1 for several data sets from different places). This paper also contains data for other species of caterpillars feeding on larch foliage.
  14. The winter moth from Varley et al. (1973 -- Page 201, Table F, convert from logarithms).
  15. Dungeness crab landings from McKelvey et al. (1980 -- data from Figure 2). Note that data on vessels and pots deployed are given in Table 1. See Berryman (1991) for an analysis of this time series.
  16. The European spruce sawfly from Morris (1959 -- Table 1, Column 4).
  17. The garden chafer from Milne (1984 -- Appendix 1(a) adjusted to number of third instar larvae per 100 samples).
  18. Pink salmon harvest from Peterman (1977 -- Fig. 2, use data for the odd year run).
  19. The viburnum whitefly from Hassell {\it et al.} (1987 -- Table 2, eggs/100 leaves). No clear-cut solution but may have 2 equilibria.
  20. Other data can be found in Tanner (1966 -- Table 1 contains over 60 references to time series data) and Hassell et al. (1976 -- Table 3 contains 56 references to time series data).

References:

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