Bias in Fish Bone Recovery from Differential Collection Techniques and Its Impact on Cultural Interpretation in California.

While studies on recovery bias are numerous in the literature, the current research focuses on defining best practices in field collection techniques to provide a more accurate representative of site constituents, particularly fish remains. Methods to determine best practices included use of 1/4-inch, 1/8-inch, and 1/16-inch mesh to process excavated material from 10 × 10 cm and 40 × 40 cm-sized bulk column samples and from a 1 × 1  m test unit. Fish remains were compared to determine density and diversity differences between the samples and how these different data sets may impact cultural interpretations. This research shows that while collection of larger column samples processed using a smaller mesh size provides a more robust data set, the taxonomic richness present in a 1 × 1  m test unit provides complimentary data that are critical to understanding subsistence trends as a whole. [ABSTRACT FROM AUTHOR]