R.D. Wooller and J.S. Bradley are at the School of Biological and Environmental Sciences, Murdoch University, Western Australia 6150, Australia.
Trends Ecol Evol. 1992 Apr;7(4):111-4. doi: 10.1016/0169-5347(92)90143-Y.
Long-term studies of seabirds, some now 30-40 years old, have begun to reveal significant age-related changes in the survival and reproduction o f these long-lived animals. Evidence for density-dependent regulation of seabird numbers, however, remains sparse whereas unpredictable, disastrous breeding years may be an important influence. Critical evaluation will require better data on (1) the extent of movements of seabirds between colonies, (2) the characteristics of those individuals that contribute disproportionately to the next generation, and (3) the importance of year and/or cohort effects on population processes.
长期研究表明，一些现在已经 30-40 岁的海鸟，其生存和繁殖能力随着年龄的增长而显著下降。尽管如此，海鸟数量的密度依赖性调节的证据仍然很少，而不可预测的灾难性繁殖年份可能是一个重要的影响因素。批判性的评估需要更好的数据来了解：（1）海鸟在群体间的迁移程度；（2）对下一代贡献不成比例的个体的特征；（3）年际和/或群体效应对种群过程的重要性。
