Homes with Elk in Foreground (image) Wildlife Conservation Society Share Print E-Mail Caption The density and extent of residential development effect species richness and occurrence. Credit Sarah Reed Usage Restrictions One time use granted for reporting this story. 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.