Schaeffer-Smith Forest Stand (image) Duke University Share Print E-Mail Caption A forest stand in Peru's Alto Mayo Valley is completely surrounded by encroaching farmland. These small patches provide habitat for the endangered San Martin titi monkey. Credit Danica Schaffer-Smith, Duke Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.