GPS for Shrubby Reed-Mustard (IMAGE) American Society of Agronomy Caption Vance Almquist collecting GPS coordinates for shrubby reed-mustard presence and absence to validate the model, Big Pack Mountain. Credit Photo credit Julie B. Baker. Usage Restrictions Please use with story only. License Licensed content 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.