The J-shaped curve has The LGraw-Hill Companies,Inc.Permission required tor reproduction two phases: Patterns of population growth Lag phase停滞阶段 growth is slow due to small population size exponential- growth Exponential growth phase指数增长期- -growth is 6 accelerating the population is exhibiting its biotic lag potential Time之 8 The J-shaped curve has two phases: • Lag phase停滞阶段 ––– growth is slow due to small population size • Exponential growth phase 指数增长期 – ––growth is accelerating & the population is exhibiting its biotic potential