Preserving low-frequency climate signals in growth records of geoduck clams (Panopea abrupta)

摘要

The capacity of geoduck clams (Panopea abrupta) to preserve detailed records of climatic change in their shells is limited primarily by longevity. Unlike the multi-centennial growth records commonly available from trees, shells rarely yield more than 160 years of data; consequently low-frequency signals may be lost when band width series are processed.