Physics and chemistry are distinguished from biology by the way generalizations are codified into theories tested by observation and experimentation. Some theories have been sufficiently tested to qualify as laws. In ecology, generalizations worthy of being called theories are less common because observations and experimentation are difficult and exceptions are more common. In this book, Walter K. Dodds enumerates generalizations in ecology. Introductory material describes how the practice of science in general, and ecology specifically, yields theories and laws. Dodds also discusses why such ideas are only useful if they have predictive ability, and delineates the scope of these generalizations and the constraints that limit their application. The result is a short book that delves deeply into important ecological ideas and how they predict and provide understanding.

Product Description: For the first time in history, humans have exceeded the sustaining capacity of Earth's global ecosystems. Our expanding footprint has tremendous momentum, and the insidious explosion of human impact creates a shockwave that threatens ecosystems worldwide for decades-possibly centuries...read more

Product Description: For the first time in history, humans have exceeded the sustaining capacity of Earth's global ecosystems. Our expanding footprint has tremendous momentum, and the insidious explosion of human impact creates a shockwave that threatens ecosystems worldwide for decades-possibly centuries...read more

Product Description: This book is a general text covering both basic and applied aspects of freshwater ecology and serves as an introduction to the study of lakes and streams. Issues of spatial and temporal scale, anthropogenic impacts, and application of current ecological concepts are covered along with ideas that are presented in more traditional limnological texts...read more (view table of contents, read Amazon.com's description)