Application of Acoustic Doppler Current Profiler (ADCP) to Observe Diel Vertical Migration of Zooplankton

Dwinovantyo, Angga; Manik, Henry M.; Prartono, Tri; Susilohadi,

doi:10.1088/1742-6596/1075/1/012016

Cited by 3 publications

(5 citation statements)

References 11 publications

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“…As the interest in the overall condition of the ocean environment grows, there is a larger demand for monitoring different groups, such as zooplankton [94,95]. In Indonesian waters, detecting the behavior of zooplankton using acoustic instruments has been done by Dwinovantyo and his colleagues [82,83]. The moored and mobile acoustic Doppler current profiler (ADCP) was set up to provide insight into the upward movement of zooplankton.…”

Section: Acoustic Zooplanktonmentioning

confidence: 99%

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Research trend on marine zooplankton in Indonesian Waters: A systematic review

Mulyadi,

Bengen,

Mulyadi

et al. 2024

BIO Web Conf.

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Research on marine zooplankton in Indonesian waters was conducted in the 19th century. However, there is limited information regarding evaluating the research trends and notable scientists involved in this area. This study aims to know the research trend on marine zooplankton research in Indonesian waters. This study analyzed publications that were included in the Scopus database from 1900 to 2021. A systematic review was undertaken using a three-stage procedure including identification, screening, and final following PRISMA chart. The final list was analysed in terms of topics of research, keywoards, location, time of publication, and authorship.. We found that the research trend was changed. During the early stages of the study, there was a prevalent focus on studying both taxonomy copepods and parasite Copepods. However, in recent times, there has been a shift towards favoring the plankton ecology. Despite being a hotspot for marine biodiversity, Indonesia only had a few taxonomists, therefore it was overlooked when marine zooplankton was discovered in its seas. We also found that most of the new finding species come from copepods whereas the other taxa of zooplankton remain undescribed or misidentification. Additionally, young scientists pay less attention to the study of taxonomy. To address these problems, priority is given to intensive training for early-career scientists. Comprehensive approaches using morphological traits and genetic tools will solve this issue.

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Section: Acoustic Zooplanktonmentioning

confidence: 99%

“…DVM in zooplankton is an expected behavior that is affected by oceanographic factors. ADCP measurements could capture this movement through the mean volume backscattering strength (MVBS) [82]. The MVBS datasets were recorded from the bottom mooring ADCP, looking upward at 750 kHz at 15 meters in the deep layer.…”

Section: Acoustic Zooplanktonmentioning

confidence: 99%

Research trend on marine zooplankton in Indonesian Waters: A systematic review

Mulyadi,

Bengen,

Mulyadi

et al. 2024

BIO Web Conf.

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“…Note that the chlorophyll concentration is one of the most commonly used indicators to estimate algae biomass in water (Carlson and Simpson 1996; Polle et al 2000). Another sensor Acoustic Doppler Current Profile (ADCP; WHS300, Teledyne RD Instruments Ltd., USA) is a conventional instrument in the study of physical oceanography, which measures the acoustic backscatter intensity (ABI) of particles in water, and the recorded ABI shows a strong correlation with the concentration of sediments (Dwinovantyo et al 2017). Also, the measured result of ADCP shows the consistency with the transmissometer on the evaluation of suspended sediment concentration (Holdaway et al 1999).…”

Section: Materials and Proceduresmentioning

confidence: 99%

Classification of suspended particles in seawater using an in situ polarized light scattering prototype

Deng,

Wang,

Guo

et al. 2023

Limnology & Ocean Methods

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Classification of suspended particles characterizes the composition of seawater, which helps the interpretation of remote sensing data and promotes the researches of the matter exchanges in ocean processes. In this article, an in situ prototype based on polarized light scattering is introduced, and its ability to classify the suspended particles is demonstrated. The experimental results show that the prototype can classify the sediments, microplastics, and phytoplankton in seawater with an accuracy larger than 85%, and further calculate their relative proportion in water. In the summer and winter of 2020, the prototype was deployed three times in Daya Bay and lasted for dozens of hours each time, along with the additional commercial sensors, that is, Environment X Observation (EXO) and Acoustic Doppler Current Profiler (ADCP). The chlorophyll content measured by EXO and the acoustic backscatter intensity measured by ADCP are respectively related to the number of algal cells and sediments in the water, which helps to interpret the data of the prototype. The results of field data show that the prototype can effectively classify phytoplankton and sediment particles in seawater and monitor their temporal variations. Besides, the retrieved information of the suspended particles is consistent with the analysis from the flow dynamics and season variations in Daya Bay. These results indicate the ability of this prototype to classify the suspended particles in seawater, which promises its potential contribution to particulate oceanography in the future.

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“…It was related to the frequency used in moored ADCP, which was higher compared to mobile ADCP. This MVBS difference happened because the acoustic method is very dependent on the acoustic frequency used, so the backscattered signal from the object will be different [15]. Based on the result, it is shown that these two methods can be applied for more detailed analysis for zooplankton detection.…”

Section: Relationship Between the Mvbs And Zooplankton Abundancementioning

confidence: 99%

“…Observation of zooplankton in the water column can be done by processing the backscatter value [14,15] and vertical velocity profiles [16] from the acoustic Doppler current profiler (ADCP) instrument. ADCP instruments can observe zooplankton distribution and behavior, although these instruments are not designed explicitly to detect zooplankton, but rather to measure ocean currents.…”

Section: Introductionmentioning

confidence: 99%

Variation of Zooplankton Mean Volume Backscattering Strength from Moored and Mobile ADCP Instruments for Diel Vertical Migration Observation

et al. 2019

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Zooplankton can be detected by using acoustic Doppler current profiler (ADCP) instruments through acquiring the mean volume backscattering strength (MVBS) data. However, the precision of the backscattered signal measured by single ADCP measurement has a limitation in the MVBS variation of zooplankton. The objectives of this study were to analyze the MVBS and vertical velocity from ADCPs at the same time and location for zooplankton’s daily vertical migration (DVM) observation. Measurements were conducted in Lembeh Strait, North Sulawesi, Indonesia. Instruments used included a moored ADCP 750 kHz and a mobile ADCP 307.2 kHz. High MVBS value was found at 11.5–16 m depths and was identified as the sound scattering layer (SSL). The DVM patterns in the SSL displayed significant differences over time and had good relationships with the diurnal cycle. Theoretical target strength (TS) from the scattering models based on a distorted-wave Born approximation (DWBA) was estimated for Oithona sp. and Paracalanus sp.; the two dominant species found in the observed area. However, ΔMVBS and ΔTS proved that the dominant zooplankton species were not the main scatterers. The strong signal in SSL was instead caused by the schools of various zooplankton species.

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Application of Acoustic Doppler Current Profiler (ADCP) to Observe Diel Vertical Migration of Zooplankton

Cited by 3 publications

References 11 publications

Research trend on marine zooplankton in Indonesian Waters: A systematic review

Research trend on marine zooplankton in Indonesian Waters: A systematic review

Classification of suspended particles in seawater using an in situ polarized light scattering prototype

Variation of Zooplankton Mean Volume Backscattering Strength from Moored and Mobile ADCP Instruments for Diel Vertical Migration Observation

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