Hydrobiological Probe for the in Situ Study and Monitoring of Zooplankton

Dyomin, Victor; Davydova, Alexandra; Давыдов, С. А.; Kirillov, Nikolay; Morgalev, Yuri N.; Olshukov, Alexey; Polovtsev, Igor

doi:10.1109/ut.2019.8734334

Cited by 2 publications

(4 citation statements)

References 7 publications

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“…The previous experience of building digital holographic cameras (DHCs) was used to create a device for accompanying ecosystem measurements of plankton [ 35 , 39 , 40 ].…”

Section: Methodsmentioning

confidence: 99%

“…For example, block 1 focuses on a set of available hydrophysical sensors. Blocks 5–7 may be modified and supplemented depending on the problem to be solved [ 40 ], for example, by a block for particle size distribution, forming video according to holographic data, determining particle speed, etc.…”

Section: Methodsmentioning

confidence: 99%

“…As the experience of applying the automatic classification [ 21 , 35 , 39 , 40 ] has shown, the decision tree may be changed, for example, a new feature may be added-compactness [ 48 ], which may be expressed by the ratio of the area to the length of the particle image boundary. Such a possibility may be useful for more detailed or accurate classification, for example to diagnose gas hydrate methane bubbles or oil droplets.…”

Section: Methodsmentioning

confidence: 99%

“…The values of taxonomic features obtained through the analysis of plankton images from marine species identification databases [45,46] are tested on plankton images reconstructed from digital holograms and are given in [47]. As the experience of applying the automatic classification [21,35,39,40] has shown, the decision tree may be changed, for example, a new feature may be added-compactness [48], which may be expressed by the ratio of the area to the length of the particle image boundary. Such a possibility may be useful for more detailed or accurate classification, for example to diagnose gas hydrate methane bubbles or oil droplets.…”

mentioning

confidence: 99%

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Underwater Holographic Sensor for Plankton Studies In Situ including Accompanying Measurements

Dyomin

Davydova

Polovtsev

et al. 2021

Sensors

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The paper presents an underwater holographic sensor to study marine particles—a miniDHC digital holographic camera, which may be used as part of a hydrobiological probe for accompanying (background) measurements. The results of field measurements of plankton are given and interpreted, their verification is performed. Errors of measurements and classification of plankton particles are estimated. MiniDHC allows measurement of the following set of background data, which is confirmed by field tests: plankton concentration, average size and size dispersion of individuals, particle size distribution, including on major taxa, as well as water turbidity and suspension statistics. Version of constructing measuring systems based on modern carriers of operational oceanography for the purpose of ecological diagnostics of the world ocean using autochthonous plankton are discussed. The results of field measurements of plankton using miniDHC as part of a hydrobiological probe are presented and interpreted, and their verification is carried out. The results of comparing the data on the concentration of individual taxa obtained using miniDHC with the data obtained by the traditional method using plankton catching with a net showed a difference of no more than 23%. The article also contains recommendations for expanding the potential of miniDHC, its purpose indicators, and improving metrological characteristics.

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“…The previous experience of building digital holographic cameras (DHCs) was used to create a device for accompanying ecosystem measurements of plankton [ 35 , 39 , 40 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Underwater Holographic Sensor for Plankton Studies In Situ including Accompanying Measurements

Dyomin

Davydova

Polovtsev

et al. 2021

Sensors

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Monitoring of Plankton Spatial and Temporal Characteristics With the Use of a Submersible Digital Holographic Camera

et al. 2020

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This study shows that the use of a submersible digital holographic camera as part of a multifunctional hardware and software complex allows carrying out in situ measurements of plankton, automating the process of obtaining data on plankton, as well as classifying plankton species up to an order within the specified taxonomic groups. Such automation ensures monitoring expeditionary or stationary research of species diversity and spatial and temporal organization of zooplankton in conjunction with the hydrophysical parameters of the medium. This paper presents the full-scale results of vertical profiles and daily measurements of plankton made with the use of the submersible digital holographic camera as well as the classification of plankton in laboratory and field conditions in the automatic mode. It is shown that, within the accomplished version, the classification algorithm using the morphological parameter makes it possible to solve the problem quickly (the time required to obtain the result is less than 1 s and depends on the number of plankton particles and the frame size of a restored image); however, the classification accuracy by orders varies within 50-60%.

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Hydrobiological Probe for the in Situ Study and Monitoring of Zooplankton

Cited by 2 publications

References 7 publications

Underwater Holographic Sensor for Plankton Studies In Situ including Accompanying Measurements

Underwater Holographic Sensor for Plankton Studies In Situ including Accompanying Measurements

Monitoring of Plankton Spatial and Temporal Characteristics With the Use of a Submersible Digital Holographic Camera

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