The next generation of Optical Plankton Counter: the Laser-OPC

Herman, Alex W.; Beanlands, B.; Phillips, E. F.

doi:10.1093/plankt/fbh095

Cited by 149 publications

(117 citation statements)

References 13 publications

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“…Checkley et al, 1997), optical and video plankton recorders (e.g. Herman et al, 2004), and acoustic devices, those deployed in the water column (e.g. Peiper et al, 1990;Thomas and Kirsch, 2000;Miyashita, 2003;Meekan et al, 2003;Ressler and Jochens, 2003) and those moored to the bottom (e.g.…”

Section: Insight and Outlookmentioning

confidence: 99%

Fisheries oceanography and the ecology of early life histories of fishes: a perspective over fifty years

Govoni¹

2005

Sci. Mar.

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SUMMARY: Fisheries oceanography can be defined as the study of the ecology of fishes in the ocean: so defined, it comprises study at all levels of ecological organization-organisms, populations, communities, and ecosystems. The early life history of fishes plays out at each of these levels of organization. A paradigm developed by Johan Hjort at the turn of the twentieth century, along with postulates by Hjort and many of his colleagues that followed, came to guide much of fisheries oceanography through the ensuing hundred years. Research themes that address these postulates can be roughly partitioned as the study of the physiological ecology of the eggs and larvae of fishes in the sea, and the study of the abundance and distribution of fish propagules. Using case studies of organisms and physical processes, considerable progress has been made in understanding the causes of variation in population recruitment, defined either by stage-based models and simulated by individual-based models. Some of this progress has been published in Scientia Marina, or its predecessor Investigación Pesquera. The causes of variation, however, are interactive and operative at differing, yet often overlapping, spatial and temporal scales. Difficulty in matching spatial scales that typically differ by an order of magnitude or more, will continue to trouble the resolution of causes of population recruitment. Moreover, study of the causes of variation in recruitment has not led to predictive power at an annual scale. Prediction at a decadal scale, using community (or more appropriately larval fish assemblages) and ecosystem level dynamics, is more hopeful. -La oceanografía pesquera puede ser definida como la ecología de los peces en el océano: definida de este modo, comprende el estudio a todos los niveles de organización ecológica: organismos, poblaciones, comunidades y ecosistemas. Los primeros estadios de desarrollo de los peces intervienen en cada uno de estos niveles de organización. El paradigma desarrollado por Johan Hjort a principio de siglo veinte, junto con postulados posteriores del propio Hjort y muchos de sus colegas, han servido de guía de la oceanografía pesquera de los siguientes cien años. Los temas de investigación a que conducen estos postulados pueden ser fundamentalmente divididos en el estudio de la ecología fisioló-gica de los huevos y larvas de peces en el mar y el estudio de la distribución y abundancia de los propágulos. Utilizando el estudio de casos particulares de organismos, se han conseguido considerables progresos en la comprensión de las causas de variación en el reclutamiento de las poblaciones, definido ya sea por los modelos basados en el estadio de desarrollo o en simulaciones basadas en el individuo. Algunos de estos avances han sido publicados en Scientia Marina, o en su predecesora Investigación Pesquera. No obstante, las causas de variación son interactivas y operativas a escalas espaciales y temporales distintas, o incluso solapadas. La dificultad para ajustar las escalas espaciales que típicame...

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Section: Insight and Outlookmentioning

confidence: 99%

Fisheries oceanography and the ecology of early life histories of fishes: a perspective over fifty years

Govoni¹

2005

Sci. Mar.

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“…On the other hand, investigating the patch size and abundance in horizontal plane continuously, electric plankton counters [6], laser optical plankton counter [7], and video plankton recorder [8] are developed. These sampling methods are mainly purposed to collect specimens and/or to identify particles.…”

Section: Introductionmentioning

confidence: 99%

Measurements of density contrast and sound-speed contrast for target strength estimation of Neocalanus copepods (Neocalanus cristatus and Neocalanus plumchrus) in the North Pacific Ocean

Matsukura

Yasuma

Murase³

et al. 2009

Fish Sci

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“…As a particle passes the sensor, the portion of blocked light is measured and recorded as a digital size and converted to an ESD. This value represents the diameter of a sphere that would have the same cross-sectional area as the particle being measured, using a semiempirical formula based on calibration with black spheres of known diameters (Herman 1992;Herman et al 2004). Processing the raw LOPC data requires extensive post-processing filtering and interpretation in several steps.…”

Section: Methodsmentioning

confidence: 99%

Large versus small zooplankton in relation to temperature in the Arctic shelf region

et al. 2018

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The next generation of Optical Plankton Counter: the Laser-OPC

Cited by 149 publications

References 13 publications

Fisheries oceanography and the ecology of early life histories of fishes: a perspective over fifty years

Fisheries oceanography and the ecology of early life histories of fishes: a perspective over fifty years

Measurements of density contrast and sound-speed contrast for target strength estimation of Neocalanus copepods (Neocalanus cristatus and Neocalanus plumchrus) in the North Pacific Ocean

Large versus small zooplankton in relation to temperature in the Arctic shelf region

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