Building on Fisheries Acoustics for Marine Ecosystem Surveys

Zwolinski, Juan P.; Demer, David A.; Cutter, George R.; Stierhoff, Kevin L.; Macewicz, Beverly J.

doi:10.5670/oceanog.2014.87

Cited by 18 publications

(28 citation statements)

References 33 publications

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“…Sardine lengths were measured during the summer 2012 NMFS survey. [5] The modal length was about 23 cm and 99% of the fish were between about 22 and 27 cm.…”

Section: Pacific Sardinementioning

confidence: 97%

“…Figure 6 shows the distribution of Pacific sardine biomass determined by the 2012 NMFS survey. [5] The heaviest concentrations of sardines were from north of San Francisco (38 0 N) to Cape Mendocino (40 o N). There were continuous light concentrations from Cape Mendocino to south of Cape Blanco (42.5°) and a few sardines between 42.5 0 N and 43.5 0 IM.…”

Section: Pacific Sardinementioning

confidence: 98%

“…In 2012, SWFSC and NWFSC conducted a joint sardine/hake survey that extended from central California (35.8 0 N) into Canada (50.8 o N) from June 27 through August 23. [4,5] During daylight hours, the NOAA Ship Bell M. Shimada conducted multifrequency echo sounding along east-west tracks that were nominally 10 nm apart. The tracks extended from approximately the 30 m depth contour to the 1500 m contour or for 35 nm, whichever was greater.…”

Section: Concurrent Experiments and Surveysmentioning

confidence: 99%

“…[4] SWFSC has presented a summary of the sardine component. [5] In addition, data have been presented to Pacific fishery management groups for the purpose of estimating the abundances of sardine and hake in 2012 in order to set fishing catch limits for 2013. [7,8] OSU has not yet published a report.…”

Section: Concurrent Experiments and Surveysmentioning

confidence: 99%

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Characteristics of Fishes with the Potential to Cause Acoustic Clutter off Oregon and Washington during the Summer of 2012

Love¹

2014

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“…Sardine lengths were measured during the summer 2012 NMFS survey. [5] The modal length was about 23 cm and 99% of the fish were between about 22 and 27 cm.…”

Section: Pacific Sardinementioning

confidence: 97%

Section: Pacific Sardinementioning

confidence: 98%

Section: Concurrent Experiments and Surveysmentioning

confidence: 99%

Section: Concurrent Experiments and Surveysmentioning

confidence: 99%

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Characteristics of Fishes with the Potential to Cause Acoustic Clutter off Oregon and Washington during the Summer of 2012

Love¹

2014

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“…In the California Current ecosystem (CCE), which extends from southern British Columbia to the Baja California Peninsula, the forage‐fish community is dominated by Pacific Herring Clupea pallasii Valenciennes 1847, northern anchovy Engraulis mordax Girard 1854, Pacific sardine Sardinops sagax (Jenyns 1842), Pacific mackerel Scomber japonicus Houttuyn 1782 and jack mackerel Trachurus symmetricus (Ayres 1855) (Zwolinski et al ., ). Variations in the abundances of these small pelagic fishes have inspired studies ranging in scope from the dynamics of single stocks to the entire assemblage of small pelagic fishes and their environment (Bakun & Parrish, ; Jacobson et al ., ; Schwartzlose et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Length conversions and mass–length relationships of five forage‐fish species in the California current ecosystem

Palance

Macewicz

Stierhoff

et al. 2019

Journal of Fish Biology

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Length‐measurement conversions and seasonal mass–length relationships (MLR) for Pacific herring Clupea pallasii, northern anchovy Engraulis mordax, Pacific sardine Sardinops sagax, Pacific mackerel Scomber japonicus and jack mackerel Trachurus symmetricus in the California Current are presented. The conversions between total (LT), fork (LF,) and standard lengths (LS) should facilitate comparisons of data across disciplines and institutions. These equations resulted from an analysis of measurements spanning 14 years and the western seaboard of North America, from the north end of Vancouver Island to the USA–Mexico border. Major‐axis regressions were used to calculate reciprocal length‐measurement conversions (e.g., LT to LS and LS to LT) and generalised linear models and ordinary least‐squares models were used to create MLRs that account for seasonal variations. The MLR models indicated seasonal differences for all species except C. pallasii, for which there was no multi‐season data. Discrepancies between these and published models were examined, along with the suitability and benefit of the various types of models used for length‐measurement conversion and MLRs.

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A Collaborative Aerial Survey of Coastal Pelagic Species in Nearshore California Waters

et al. 2022

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Pacific Sardine Sardinops sagax and Northern Anchovy Engraulis mordax are commercially important West Coast fish stocks managed within the Coastal Pelagic Species (CPS) complex by the Pacific Fishery Management Council and National Marine Fisheries Service. Before 2020, survey indices used in Pacific Sardine stock assessments did not explicitly account for nearshore biomass, which presumably had been relatively small compared to the total biomass of the population, but since 2015, has been a more substantial component of total biomass. During the recent Pacific Sardine stock decline, the California Department of Fish and Wildlife and the California Wetfish Producers Association collaborated on an aerial survey off California to estimate nearshore (within 3,600 m from shore) CPS biomass to inform assessments. This project has also involved federal fisheries biologists and Pacific Fishery Management Council advisory bodies and committees, representing a unique collaborative effort to improve data used in CPS fisheries management. We will discuss successes, issues, and challenges in implementing this nontraditional survey and how these data can continue to inform future stock assessments.

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Building on Fisheries Acoustics for Marine Ecosystem Surveys

Abstract: .2014. Building on fisheries acoustics for marine ecosystem surveys.Oceanography 27(4):68-79, http://dx

Cited by 18 publications

References 33 publications

Characteristics of Fishes with the Potential to Cause Acoustic Clutter off Oregon and Washington during the Summer of 2012

Characteristics of Fishes with the Potential to Cause Acoustic Clutter off Oregon and Washington during the Summer of 2012

Length conversions and mass–length relationships of five forage‐fish species in the California current ecosystem

A Collaborative Aerial Survey of Coastal Pelagic Species in Nearshore California Waters

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