This book explores various keystone species, including prairie dogs, bison, honey bees, white rhinoceros, and lemmings, and the important roles that they play i

Most arches built today contain a single building block at the top that is the most important piece. This special piece can be found in the arches of soaring ca

This book discusses the historic range of variation (HRV) in the types, frequencies, severities and scales of natural disturbances, and explores how they create

Most arches built today contain a single building block at the top that is the most important piece. This special piece can be found in the arches of soaring ca

The biota of the earth is being altered at an unprecedented rate. We are witnessing wholesale exchanges of organisms among geographic areas that were once total