TY - RPRT TI - Monitoring temporal and spatial variability in sandeel (Ammodytes hexapterus) abundance with pigeon guillemot (Cepphus columba) diets AU - Michael A. Litzow AU - John F. Piatt AU - Alisa A. Abookire AU - A.K. Prichard AU - Martin D. Robards PY - 2000 DO - 10.1006/jmsc.2000.0583 UR - https://pubs.usgs.gov/publication/70022270 ID - 70022270 ER -