Interannual variation in pelagic juvenile rockfish (Sebastes spp.) abundance – going with the flow

We report results from 28 yr of a midwater trawl survey of pelagic juvenile rockfish (Sebastes spp.) conducted off the central California coast. The fishery-independent survey is designed to provide pre-recruit indices of abundance for use in groundfish stock assessments. Standardized catch rate time series for 10 species were developed from delta-generalized linear models that include main effects for year, station, and calendar date. Results show that interannual fluctuations of all 10 species are strongly coherent but highly variable, demonstrating both high- and low-frequency components. A similarly coherent result is observed in the size composition of fish, with large fish associated with elevated catch rates. In contrast, spatial and seasonal patterns of abundance show greater species-specific differences. A comparison of the shared common trend in pelagic juvenile rockfish abundance, derived from principal components analysis, with recruitments from five rockfish stock assessments shows that the time series are significantly correlated. An examination of oceanographic factors associated with year-to-year variability indicates that a signature of upwelled water at the time of the survey is only weakly related to abundance. Likewise, basin-scale indices (the Multivariate El Nino-Southern Oscillation Index, the Pacific Decadal Oscillation, the North Pacific Gyre Oscillation, and the Northern Oscillation Index) are poorly correlated with abundance. In contrast, sea level anomalies in the months preceding the survey are well correlated with reproductive success. In particular, equatorward anomalies in the alongshore flow field following the spawning season are associated with elevated survival and poleward anomalies with poor survival.

[1]  S. R. Searle,et al.  Population Marginal Means in the Linear Model: An Alternative to Least Squares Means , 1980 .

[2]  E. Houde,et al.  Emerging from Hjort's Shadow , 2008 .

[3]  F. Schwing,et al.  A new climate regime in northeast pacific ecosystems , 2003 .

[4]  S. Bograd,et al.  Winter and summer upwelling modes and their biological importance in the California Current Ecosystem , 2011 .

[5]  E. J. Dick,et al.  Beyond ‘lognormal versus gamma’: discrimination among error distributions for generalized linear models , 2004 .

[6]  A. Maccall,et al.  Stock assessment model for the shortbelly rockfish, Sebastes jordani, in the California Current , 2007 .

[7]  S. Ralston,et al.  THE PHYSICAL OCEANOGRAPHY OFF THE CENTRAL CALIFORNIA COAST DURING MAY-JUNE 2001: A SUMMARY OF CTD AND OTHER HYDROGRAPHIC DATA FROM YOUNG OF THE YEAR JUVENILE ROCKFISH SURVEYS , 2006 .

[8]  R. Peterman,et al.  Recruitment and survival of Northeast Pacific Ocean fish stocks: temporal trends, covariation, and regime shifts , 2007 .

[9]  S. Ralston,et al.  Population estimation of bocaccio (Sebastes paucispinis) based on larval production , 2010 .

[10]  T. Wyllie.  Thirty-Four Species of California Rockfishes: Maturity and Seasonality of Reproduction , 2013 .

[11]  J. Santora,et al.  Linking predators to seasonality of upwelling: Using food web indicators and path analysis to infer trophic connections , 2012 .

[12]  J. Bence,et al.  An approach to estimating rockfish biomass based on larval production, with application to Sebastes jordani* , 2003 .

[13]  Russell W. Bradley,et al.  Estimating the impacts of fishing on dependent predators: a case study in the California Current. , 2010, Ecological applications : a publication of the Ecological Society of America.

[14]  R. Lasker.  The relations between oceanographic conditions and larval anchovy food in the California Current: Identification of factors contributing to recruitment failure , 1978 .

[15]  H. Moser,et al.  FOOD AND FEEDING OF BOCACCIO (SEBASTES PAUCISPINIS) AND COMPARISON WITH PACIFIC HAKE (MERLUCCIUS PRODUCTUS) LARVAE IN THE CALIFORNIA CURRENT , 1984 .

[16]  M. Yoklavich,et al.  REPRODUCTION, EMBRYONIC ENERGETICS, AND THE MATERNAL-FETAL RELATIONSHIP IN THE VIVIPAROUS GENUS SEBASTES (PISCES: SCORPAENIDAE). , 2013, The Biological bulletin.

[17]  Steven R. Hare,et al.  Empirical evidence for North Pacific regime shifts in 1977 and 1989 , 2000 .

[18]  R M Peterman,et al.  Wind Speed and Mortality Rate of a Marine Fish, the Northern Anchovy (Engraulis mordax) , 1987, Science.

[19]  J. Wallace,et al.  A Pacific Interdecadal Climate Oscillation with Impacts on Salmon Production , 1997 .

[20]  S. Sogard.  Size-selective mortality in the juvenile stage of teleost fishes : A review , 1997 .

[21]  Ransom A. Myers,et al.  Spatial scales of interannual recruitment variations of marine, anadromous, and freshwater fish , 1997 .

[22]  F. Schwing,et al.  The Northern Oscillation Index (NOI): a new climate index for the northeast Pacific , 2002 .

[23]  W. Sydeman,et al.  Rockfish response to low-frequency ocean climate change as revealed by the diet of a marine bird over multiple time scales , 2004 .

[24]  A. C. Matarese.  Laboratory Guide To Early Life History Stages Of Northeast Pacific Fishes , 1991 .

[25]  S. Gaichas,et al.  A cross-ecosystem comparison of spatial and temporal patterns of covariation in the recruitment of functionally analogous fish stocks , 2009 .

[26]  H. Moser,et al.  The early stages of fishes in the California current region , 1996 .

[27]  Thomas E. Laidig,et al.  Diets of top predators indicate pelagic juvenile rockfish (Sebastes spp.) abundance in the California Current System , 2007 .

[28]  C. Edwards,et al.  A numerical study of inferred rockfish (Sebastes spp.) larval dispersal along the central California coast , 2010 .

[29]  J. Hyde,et al.  Cryptic speciation in the vermilion rockfish (Sebastes miniatus) and the role of bathymetry in the speciation process , 2008, Molecular ecology.

[30]  A. Hollowed,et al.  Patterns in Recruitment of Marine Fishes in the Northeast Pacific Ocean , 2013 .

[31]  P. Levin,et al.  Interactions between climate and population density in the episodic recruitment of bocaccio, Sebastes paucispinis, a Pacific rockfish , 2011 .

[32]  M. Dickey‐Collas,et al.  The influence of life history dynamics and environment on the determination of year class strength in North Sea herring (Clupea harengus L.) , 2005 .

[33]  E. Houde.  Fish early life dynamics and recruitment variability , 1987 .

[34]  James C. McWilliams,et al.  North Pacific Gyre Oscillation links ocean climate and ecosystem change , 2008 .

[35]  K. Weinberg.  The 1989 Pacific west coast bottom trawl survey of groundfish resources : estimates of distribution, abundance, age and length composition , 1994 .

[36]  W. Peterson,et al.  Copepod biodiversity as an indicator of changes in ocean and climate conditions of the northern California current ecosystem , 2006 .

[37]  R. Brodeur,et al.  Diel variation in vertical distribution of an offshore ichthyoplankton community off the Oregon coast , 2007 .

[38]  J. Santora,et al.  Spatial organization of krill and seabirds in the central California Current , 2011 .

[39]  Gunnar Stefánsson,et al.  Analysis of groundfish survey abundance data: combining the GLM and delta approaches , 1996 .

[40]  William J. Sydeman,et al.  Climate change, reproductive performance and diet composition of marine birds in the southern California Current system, 1969-1997 , 2001 .

[41]  Franklin B. Schwing,et al.  Untangling the relationships among climate, prey and top predators in an ocean ecosystem , 2008 .

[42]  J. Largier,et al.  Subtidal circulation over the northern California shelf , 1993 .

[43]  A. Maccall,et al.  Bocaccionomics: the effectiveness of pre-recruit indices for assessment and management of bocaccio. , 2010 .

[44]  Thomas E. Laidig.  Influence of ocean conditions on the timing of early life history events for blue rockfish (Sebastes mystinus) off California , 2010 .

[45]  A. Punt,et al.  Standardizing catch and effort data: a review of recent approaches , 2004 .

[46]  Arnold W. Mantyla,et al.  The effect of the geostrophic flow upon coastal sea elevations in the northern North Pacific Ocean , 1976 .

[47]  John C. Field,et al.  Spatial variability in rockfish (Sebastes spp.) recruitment events in the California Current System , 2005 .

[48]  K. Wolter,et al.  Measuring the strength of ENSO events: How does 1997/98 rank? , 1998 .

[49]  William J. Sydeman,et al.  Upper trophic level predators indicate interannual negative and positive anomalies in the California Current food web , 1995 .

[50]  Thomas E. Laidig,et al.  Relationship between abundance of juvenile rockfishes (Sebastes spp.) and environmental variables documented off northern California and potential mechanisms for the covariation , 2007 .

[51]  J. Ross,et al.  INFLUENCE OF WATER COLUMN STRATIFICATION ON THE DEPTH DISTRIBUTIONS OF PELAGIC JUVENILE ROCKFISHES OFF CENTRAL CALIFORNIA , 2003 .

[52]  M. Love,et al.  Life History Aspects of 19 Rockfish Species (Scorpaenidae: Sebastes) from the Southern California Bight , 1990 .

[53]  Daniel,et al.  On the development of year-Class strength and cohort variability in two northern California rockfishes , 2008 .

[54]  S. Ralston,et al.  Diel vertical distribution of postflexion larval Citharichthys spp. and Sebastes spp. off central California , 1999 .

[55]  M. Fogarty.  Recruitment in randomly varying environments , 1993 .

[56]  Steven R. Hare,et al.  Effects of interdecadal climate variability on the oceanic ecosystems of the NE Pacific , 1998 .

[57]  P. M. Kosro,et al.  Estimates of sea surface height and near‐surface alongshore coastal currents from combinations of altimeters and tide gauges , 2008 .

[58]  R. Brodeur,et al.  Abundance and diversity of coastal fish larvae as indicators of recent changes in ocean and climate conditions in the Oregon upwelling zone , 2008 .