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http://cibnor.repositorioinstitucional.mx/jspui/handle/1001/2127| VARIABILITY OF SARDINE CATCH AS RELATED TO ENRICHMENT, CONCENTRATION, AND RETENTION PROCESSES IN THE CENTRAL GULF OF CALIFORNIA | |
| Daniel Bernardo Lluch Cota SALVADOR EMILIO LLUCH COTA DANIEL LLUCH BELDA Manuel Otilio Nevárez Martínez ALEJANDRO FRANCISCO PARES SIERRA SERGIO HERNANDEZ VAZQUEZ | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| URL: https://www.calcofi.org/publications/calcofireports/v40/CalCOFI_Rpt_Vol_40_1999.pdf ISSN: 0575-3317 | |
| SARDINE, GULF OF CALIFORNIA | |
| "The sardine (Sardinops sugax) fishery of the Gulf of California is among Mexico’s most important fisheries, accounting for the largest catch and providing many productive jobs. During the early 1990s, this fishery collapsed to less than 3% of the production maximum. Surprisingly, after two years of very low catch the fishery recovered quickly. We propose that these large fluctuations may be explained mainly by physical processes (enrichment, retention, and concentration) governing the sardine spawning habitat. The spawning area may be influenced by processes such as tidal mixing, Winter northwesterly winds, coastal upwelling, prevailing Surface currents, and Ekman transport, but most of its variability is believed to be wind-forced. Therefore we attempted to relate spawning extension to wind variations. By fitting an equation that expresses spawning as a probability function of a wind-derived index, we have built a spawning-probability time series based on egg and larval survey data and then tested against an independent series of landings and biomass indices (number of recruits and adults). Results show coherent relations between the spawning-probability series and the biological and fisheries data, despite large fluctuations (collapse and recovery). Our results are encouraging and may provide a solid theoretical basis for future environment- monitoring systems for the sardine fishery in the gulf." | |
| California Cooperative Oceanic Fisheries Investigations | |
| 1999 | |
| Artículo | |
| CalCOFI Reports | |
| Inglés | |
| TÉCNICAS PESQUERAS | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
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| CalCOFI Rep 1999 Vol40 pp184-190.pdf | 611.12 kB | Adobe PDF | Visualizar/Abrir |