Technical Comments

Response to Comment on "On the Regulation of Populations of Mammals, Birds, Fish, and Insects"

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Science  07 Jul 2006:
Vol. 313, Issue 5783, pp. 45
DOI: 10.1126/science.1124493

Figures

  • Fig. 1.

    Plots of θ against body mass g for mammals, one point per species. θ is the parameter fitted by (1) that specifies the curvature of the relationship between pgr and abundance. θ < 1 indicates a concave relationship, θ > 1convex. θ values above 3 have been plotted as 3 (and similarly for θ < –3) to avoid giving undue prominence to large values of θ. Body mass data are not available for all species, but in some cases it has been possible to supplement GPDD data from (16). (A) The GPDD higher quality data (grades 2 to 5) classified by Peacock and Garshelis as nonharvest data. (B) As (A), but including harvest data. The GPDD data ID reference numbers of the time series from which these data were calculated are (A) 63, 64, 3605, 3606, 3607, 1318, 10532, 10543, 65, 66, 1301, 3512, 3514, 3581, 1308, 3969, 3970, 2723, 2724, 3888, 3515, 1295, 1296, 10545, 3580, 3256, 1328, 1330, 1331, 1332, 1333, 3404, 3198, 1273, 1274, 1275, 1276, 10533, 3466, 1327, 3736, 3582, 10541, 1292, 10535, 10540, 3603, 3268, 3877, 3879, 3880, and 3881. (B) also includes 1343, 1345, 1540, 1541, 3569, 3655, 3702, 3705, 3706, 3708, 3709, 3721, 3724, 3731, 4006, 4007, 10538, 10539, 11012, and 11015.

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