Measuring Abundance
这本书专门介绍如何测量自然中种群规模和物种多样性，适合生态学家、鸟类学家、野生动物研究人员和环境工作者参考。
Measuring Abundance: Methods for the Estimation of Population Size and Species Richness by Graham Upton is one of the few books that specifically deals with measuring the sizes of the populations of the individuals as well as the diversity of the species in nature. This book is a part of the Data in the Wild Series of Pelagic Publishing. It is always challenging to measure the number of stationary objects as well as moving objects in the wild and the measurement of species richness which is very nicely covered in the book. I am sure the book will be an excellent resource for ecologists, ornithologists, wildlife researchers and environmentalists.