Abstract
The abalone and lobster fisheries on the western coast of Baja California are economic activities ofgreat importance to the fishing communities settled along that coast. Its historical production from 1950 to 2001shows opposite trends. In the case of the lobster, the catch is upwards, while that of the abalone shows a continuousdownward trend, in addition to presenting minor oscillations. As a hypothesis, it is proposed that both the trendand the oscillations are due to the variation of the fishing effort and the environment acting simultaneously. Therefore, with the aim of weighing the sources of variability, a multiple correlation analysis was applied, considering additionally the seasonal and decennial effects. As environmental variables, indices were used: MultivariateENSO (MEI), Pacific Decadal Oscillation (PDO), Oscillation Gyre Pacific North (OGPN), and local variablessuch as the Upwelling Index (U) and Sea Surface Temperature (SST). The results indicate that, in the case ofabalone, the downward trend of the catch and its variability are better explained by the environment; on the otherhand, in the case of lobster, the fishing effort turned out to be the most important factor. The minor oscillations arealso related to strong El Niño events for both resources.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.