词条 | Intrinsic rate of increase (r) calculated for populations of species that differ greatly in their potential for the rate of population growth |
释义 | Intrinsic rate of increase (r) calculated for populations of species that differ greatly in their potential for the rate of population growth Table Intrinsic rate of increase (r)* calculated for populations of species that differ greatly in their potential for the rate of population growth species intrinsic rate of increase (r) elephant seal 0.091 ring-necked pheasant 1.02 field vole 3.18 flour beetle 23 water flea 69 *Values above zero indicate that the population is increasing. The higher the value of r, the faster the intrinsic growth rate of the population. Source: Adapted from Robert E. Ricklefs, The Economy of Nature, 3rd edition, copyright &\\#x00a9; 1993 by W.H. Freeman & Company, used with permission. See as table: ![]() |
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