Length and body condition data for capelin and Pacific sand lance at Middleton and St. Lazaria islands in the Gulf of Alaska, 1993-2016

In this study, we tested the hypothesis that the size and condition of forage fish in the Gulf of Alaska varies in relation to ocean climate. These data files contain the size data and condition calculation for the focal forage fish species. Metadata for these measurements include unique and sample identifiers, site (location), year, sample date within year, and species. The data files are comma separated value formatted (.csv). These data were extracted from the Alaska Puffin Diet Database (APDD), which was a product of previous NPRB project 1213. Data extraction took place in fall 2017. The analyzed data were collected during field research from 1993–2016 at Middleton and St. Lazaria islands in the Gulf of Alaska by the Alaska Maritime National Wildlife Refuge, the U.S. Geological Survey, and the Institute for Seabird Research and Conservation.