Research programs may move in new directions in response to changes in society's needs and values. Each chapter of this book reflects the relationship between the ecological results that emerge from a long-term research project and the social forces that influence questions asked and resources invested in ecological research.
Hayes, D.C.; Stout, S.L.; Crawford, R.H.; Hoover, A.P. 2014. Editors' foreword. In: Hayes, D.C.; Stout, S.L.; Crawford, R.H.; Hoover, A.P., eds. USDA Forest Service experimental forests and ranges research for the long term. New York, NY: Springer: vi-ix.