Data are shipboard counts, transformed as ln(bird density/km2 +1) and expressed as an anomaly of log density relative to the long-term mean. So CC: Data are from CalCOFI surveys (http://calcofi.org/field-work/underway-observations/380-bird-observations.html), courtesy of Dr. Bill Sydeman of the Farallon Institute (wsydeman@faralloninstitute.org). Ce CC: Data are from the SWFSC Rockfish Recruitment and Ecosystem Assessment Survey (https://swfsc.noaa.gov/textblock.aspx?Division=FED&ParentMenuId=54&id=20615). No CC: Data are shipboard counts, transformed as ln(bird density/km2 +1) and expressed as an anomaly of log density relative to the long-term mean.
cciea_B_AS_DENSA data frame with 423 rows and 5 variables:
Time (seconds since 1970-01-01T00:00:00Z) [5.364576E8, 1.5463008E9]
Density Anomaly () [-2.107251, 1.742638]
Species (season) () []