International Scholarly Research Notices / 2012 / Article / Tab 1 / Research Article
Models for Population Growth Curves Table 1 Comparison of the generalized logistic (
1 ) with the corresponding difference equation (
2 ) and the ordinary logistic (
6 ) compared with the corresponding difference equation (
7 ). Numbers in square brackets refer to references and other numbers are GPDD numbers. Values given are residual mean squares from the fits.
Source Generalized logistic Difference equation Ratio Logistic Difference equation Ratio Red deer 6585 2.16 2.47 1.14 3.1 2.8 0.90 Gray fox 319 283 591 2.09 378.2 566.7 1.50 Gray fox 342 1311 1440 1.10 1254 1399 1.12 Coyote 263 2528 2729 1.08 2451 2681 1.09 Gray seals [1 ] 56.83 93.2 1.64 65.93 90.88 1.38 Bison [2 ] 5.81 7.86 1.35 5.64 7.81 1.38 Macaque 6068 1.11 1.32 1.19 1.45 1.43 0.99 Beaver 151 15960 16490 1.03 15850 16410 1.04 Beaver 156 40960 43800 1.07 43400 44070 1.02 Elephant seals [3 ] 48.61 63.44 1.31 50.06 62.79 1.25 Seneca deer [4 ] 29.93 50.78 1.70 28.99 50.44 1.74 Badger 78 375 453 1.21 372.5 438.8 1.18 Gentoo penguins (Fraser pers. comm.). 61.19 113.2 1.85 57.88 108.6 1.88 Polar bear 143 89.9 68.1 0.76 95.09 67.49 0.71 Coyote 247 308 380 1.23 335.7 362.4 1.08 Gray fox 328 549.3 901.3 1.64 526.1 850.1 1.62 Marten 9695 17020 22010 1.29 16630 22390 1.35 Squirrel 9699 347100 393400 1.13 339100 398500 1.18 Gray fox 334 3383 3332 0.98 3280 3155 0.96 Camargue horses [5 ] 0.58 1 1.72 1.42 1.74 1.23 Argentine horses [6 ] 5.01 8.04 1.60 5.38 7.8 1.45 Przewalski's horses [5 , 7 ] 0.89 1.39 1.56 1.23 1.47 1.20 Red kite [8 ] 3.27 4.56 1.39 3.2 4.46 1.39 Medians and Mean Ratios 89.9 113.2 1.35 95.09 108.6 1.20