PacFAAB Marlin Catches with Environmental Variables

Sea-surface temperature is strongly correlated with fish movements and chlorophyll densities are a measure of primary production. Variations in these oceanographic conditions influence distribution and habitat of all fish. The prey of striped marlin ( anchovy, sardine, and squid) concentrate in areas of high productivity to feed on the plankton communities associated with primary production. Striped marlin move into the coastal waters off Baja and southern California as the water warms and usually stay as long as the water remains warm and there is abundant prey.

One-month composite charts of sea-surface temperature and chlorophyll densities were prepared for September and October 2000. Striped marlin catches reported to the San Diego Marlin Club and the Balboa Angling Club was added to indicate possible areas of association. The of chlorophyll color charts indicate marlin are captured in range of concentration between 0.5 to 1.0 milligrams per cubic meter of water. Sea-surface temperature charts indicated striped marlin remained in a temperature range of 18° to 21°C in September and from 17° to 19°C in October. The one-month composite charts appear too broad to identify a strong relationship between striped marlin movement and either sea-surface temperature or chlorophyll densities. In 2001, we would like to provide one-week compost charts of both sea-surface temperatures and chlorophyll densities. This will require anglers report the date and precise location of marlin catches to their respective Club within a day or two of capture. These charts might then show a stronger relationship between the oceanographic features and fish assemblages.

Sea-surface temperature charts

September 2000 October 2000
Sep 2000 temp Oct 2000 temp

Chlorophyll density charts

September 2000 October 2000
Sep 2000 Chlor October 2000 cholorophyll
Last modified: 12/24/2014