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CalCOFICalifornia Cooperative Oceanic Fisheries Investigations
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Perretti and Sedarat (2016) investigated the paralarval bottleneck hypothesis using field samples collected by the CalCOFI. They found that paralarvae, standardized by age, were larger during El Nino than they were during La Nina, providing no evidence of population bottlenecks at the paralarval stage (Perretti & Sedarat 2016).
Seasonal distribution and abundance of cetaceans off Southern California estimated from CalCOFI cruise data from 2004 to 2008.
Smith, "A comparison of zooplankton sampling methods in the CalCOFI time series," California Cooperative Oceanic Fisheries Investigations Reports, vol.
The NOAA and CalCOFI scientists have observed a drop in biological abundance, or productivity, that appears to be related to the northward movement of warm water from the equator.
Physical, chemical, and biological data report, CalCOFI cruises 9401 and 9403.
Horne and Smith (1997) argued that the spawning locations of Pacific hake shifted north in warmer years and had moved 444 km toward the north between 1951 and 1984, based on modeling using CALCOFI collections of larval hake.
Larval rockfishes collected off Southern California during the California Cooperative Oceanic Fisheries Investigations (CalCOFI) cruise in April 1999 and the Baseline Cowcod Conservation Area (CCA) cruise in February 2002 were identified by using mitochondrial cytochrome b genomic DNA to determine the abundances of individual species.
In particular, Thompson's approach to investigating the abundance of the sardine utilizing yield-based statistics was in stark contrast to the wide-scale environmental studies (or fisheries-oceanography) conducted later by the California Cooperative Fisheries Investigations (CalCOFI) to assess the abundance of the sardine (Scheiber, 1994; Kendall and Duker, 1998).
However, Durazo (2009) demonstrated that the all-time mean of dynamic heights at a 200 m depth from the CalCOFI (1950-1978) and IMECOCAL (1997-2008) time series showed two distinctive dynamic regimes, delineated by two large-scale subsurface cyclonic eddies off Baja California that detached near the vicinity of Punta Eugenia (28[degrees]N), and are the most prominent along the Pacific coast.
Variation in patterns of coastal currents, eddies, up-welling plumes, and jets can all affect the distribution of rockfish during the pelagic larval and juvenile stages, leading to the patchy distribution observed in CalCOFI surveys (Ahlstrom et al., 1978).
Instituto Nacional de la Pesca and CalCOFI statistical regional divisions for ichthyoplankton surveys.
Increasingly, fishery-independent surveys are being relied upon to provide the robust information fishery managers require, such as the California Cooperative Oceanic Fisheries Investigation (CalCOFI).