CALCOFI fish larvae at 66 standard stations, 1966 - ongoing

The fish larvae (ichthyoplankton) survey is conducted through the
California Cooperative Fisheries Investigations program (CALCOFI,
http://www.calcofi.org/).
These data are a time series of fish larvae counts (or density, as
number per 10 m2 of ocean surface)
collected in the area of the California Current between San Diego and
Avila Beach, California, during the period of 1966 to 2015. Original
data were filtered to facilitate consistent comparisons over time and
space.

The original CalCOFI fish larvae count data is available from the
CoastWatch West Coast Regional Node (WCRN) at NOAA’s Pacific Fisheries
Environmental Laboratory,
http://coastwatch.pfeg.noaa.gov/erddap/tabledap/index.html.
The dataset presented here is an aggregation of 31 data files,
originally divided alphabetically by taxon (named “CalCOFI Larvae
Counts, Scientific Names * to *”). The data were filtered to include
only the 66 core stations with a maximum of 1 cruise per season. These
66 core stations have been most frequently sampled in the past and
sampling is ongoing.

CalCOFI sampling began in 1949. However, the dataset presented here
begins in 1966 to include only samples that were analyzed with
techniques that apply the most current and accurate identification of
larvae to the species level. As the backlog of samples (i.e., before
1966) is re-examined, this dataset will be augmented with that
additional, earlier data.