Wolda Henk
Smithsonian Tropical Research Institute, P.O. Box 2072, Balboa, Panama.
Oecologia. 1983 Jun;58(3):290-298. doi: 10.1007/BF00385226.
The diversity of samples of cockroaches (Blattaria) taken with light-traps in six localities in Panama is described. As a diversity index α of the log series is found to be more satisfactory than either N or N of Hills's series or Hurlbert's S , even if the distribution of the relative abundances is significantly different from a log series. However, even the α-index is of only limited usefulness. A simple statistic such as the number of species per unit effort can be at least as useful. The seasonal variation in the value of the diversity indices is negatively correlated with both the number of species and the number of individuals. Mountain sites have a lower alpha-diversity than lowland sites and relatively undisturbed sites have more individuals and more species than disturbed ones, although this difference is not reflected in the value of the diversity indices. To describe the beta-diversity the NESS similarity index, here called C , is far superior over any other indices available. The between site diversity is very high. Samples taken at the same site in successive years in most cases are significantly different from being random samples of the same fauna.
本文描述了在巴拿马六个地区使用灯光诱捕器采集的蟑螂（蜚蠊目）样本的多样性。作为多样性指数，发现对数级数的α比希尔斯级数的N或N 或赫伯特的S 更令人满意，即使相对丰度的分布与对数级数有显著差异。然而，即使是α指数的用处也有限。一个简单的统计量，如单位努力下的物种数量，至少同样有用。多样性指数值的季节变化与物种数量和个体数量均呈负相关。山区的α多样性低于低地，相对未受干扰的地区比受干扰地区有更多的个体和物种，尽管这种差异在多样性指数值中没有体现。为了描述β多样性，NESS相似性指数（这里称为C ）比任何其他可用指数都优越得多。地点间的多样性非常高。在大多数情况下，连续几年在同一地点采集的样本与同一动物群的随机样本有显著差异。
