Spatial dynamics of anchovy, sardine, and hake pre-recruit stages in the California Current
Smith, P.E.; Horne, J.K.; Schneider, D.C. (2001). Spatial dynamics of anchovy, sardine, and hake pre-recruit stages in the California Current. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 58(5): 1063-1071. https://dx.doi.org/10.1006/jmsc.2001.1092
In: ICES Journal of Marine Science. Academic Press: London. ISSN 1054-3139; e-ISSN 1095-9289, meer
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| Trefwoorden |
Aquatic organisms > Marine organisms > Fish > Marine fish
Behaviour > Migration > Emigration
Behaviour > Migration > Immigration
Behaviour > Migrations > Immigrations
Demographics
Demographics
Developmental stages > Juveniles
Developmental stages > Larvae > Fish larvae
INE, California Current
Physics > Mechanics > Kinematics
Engraulis mordax Girard, 1854 [WoRMS]; Merluccius productus (Ayres, 1855) [WoRMS]; Sardinops sagax (Jenyns, 1842) [WoRMS]
California Current [Marine Regions]
Marien/Kust; Brak water |
| Auteurs | | Top |
- Smith, P.E., correspondent
- Horne, J.K.
- Schneider, D.C.
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| Abstract |
Three genera, Engraulis, Sardinops, and Merlucciu have coincident spawning and juvenile brood areas in most eastern and western boundary currents throughout the world. The CalCOFI survey program has amassed a 50-year data series on location and timing of spawning and the resultant recruitment of anchovy, sardine, and hake in the California Current region. Use of existing Lefkovitch matrix population projection models for these three species allows evaluation of the spatial and temporal scales that govern the biological and physical interactions. We present rate diagrams for hake and construct comparable diagrams for anchovy and sardine in a common, variable environment. Rate diagrams depict the relative importance of demographic (natality and mortality), growth, and kinematic (passive and active movement) processes to a quantity of interest as a function of spatial and temporal scale. Results confirm that the scale of observations will have to be manipulated to expose the importance of any combination of processes for life history stages among these species. Field sampling systems have not yet responded adequately to mesoscale features (50 km) persisting over months. |
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