This is an excellent introduction to the subject of ecology. Easy to read without being oversimplified, it provides a detailed overview of the principles of ecology. It's main strength is the constant use of examples and case studies to illustrate the points.
It looks at the functioning of individuals and species within environments, environmental factors, interactions within ecosystems, biomes, and behavioural and genetic factors, as well as distribution and conservation.
Ecological terms are explained as they are encountered, making it easier for those new to the subject. Scientific studies are described which inform the principles described, and conflicting theories explained.
Some understanding of biology is presupposed, and the mathematical content assumes some knowledge of equations, logarithms and scientific notation: although the case studies are so well explained in the text, that the principle of each one can be understood even if the mathematics remain a mystery!
There is also an emphasis on the application of ecology to conservation, and two chapters at the end concentrate specifically on conservation.
As someone new to the subject but with an interest in conservation and how ecosystems work, I found this a fascinating, informative book.