2020
DOI: 10.1016/j.dsr.2020.103237
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Micronekton distribution in the southwest Pacific (New Caledonia) inferred from shipboard-ADCP backscatter data

Abstract: Acoustic data are invaluable information sources for characterizing the distribution and abundance of midtrophic-level organisms (micronekton). These organisms play a pivotal role in the ecosystem as prey of top predators and as predators of low-trophic-level organisms. Although shipboard-ADCP (acoustic Doppler current profiler) acoustic backscatter signal intensity cannot provide an absolute biomass estimate, it may be a useful proxy to investigate variability in the distribution and relative density of micro… Show more

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Cited by 13 publications
(9 citation statements)
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References 129 publications
(172 reference statements)
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“…The raw acoustic data were not calibrated or compared with other calibrated equipment. However, the data from ship-board acoustic Doppler current profiler (SADCP) are considered suitable for evaluating the relative biomass of mesopelagic community and identifying the vertical distribution of DSLs in many studies (Irigoien et al, 2014;Davison et al, 2015;Bianchi and Mislan, 2016;Receveur et al, 2020a). Midday and midnight were defined as the periods of 10:00-14:00 and 20:00-02:00, respectively.…”
Section: Acoustic Data Collection and Processingmentioning
confidence: 99%
See 1 more Smart Citation
“…The raw acoustic data were not calibrated or compared with other calibrated equipment. However, the data from ship-board acoustic Doppler current profiler (SADCP) are considered suitable for evaluating the relative biomass of mesopelagic community and identifying the vertical distribution of DSLs in many studies (Irigoien et al, 2014;Davison et al, 2015;Bianchi and Mislan, 2016;Receveur et al, 2020a). Midday and midnight were defined as the periods of 10:00-14:00 and 20:00-02:00, respectively.…”
Section: Acoustic Data Collection and Processingmentioning
confidence: 99%
“…Mesopelagic organisms are one of the largest groups in the marine biome. They include small fishes, crustaceans, cephalopods, and gelatinous organisms (Salvanes and Kristoffersen, 2001;Receveur et al, 2020a). Micronekton, organisms with a length in the range of 2-20 cm, have a stronger ability to migrate and wider migration range than zooplankton.…”
Section: Introductionmentioning
confidence: 99%
“…We used the Bayesian information criteria (BIC) (Raftery, 1995;Hui et al, 2015) and our personal knowledge of the region based on acoustics data analyses (Receveur et al, 2019(Receveur et al, , 2020 to choose the appropriate number of RCPs.…”
Section: Model Parameterizationmentioning
confidence: 99%
“…Two previous studies analyzed the acoustic data from the same Nectalis surveys to link the mean 20-120 m acoustic echo-intensity and the 0-600 m vertical acoustic profiles to environmental conditions (Receveur et al, 2019(Receveur et al, , 2020. They proposed a bioregionalization of the New Caledonia EEZ based on the micronekton vertical distribution and identified three homogenous regions during the day: (i) north of 21 • S with a weak deep scattering layer (DSL) and a weak shallow scattering layer (SSL); (ii) south of 21 • S and west of 165 • E (intense SSL at 80 m and very intense SSL at 30 m); and (iii) south of 21 • S and east of 165 • E (intense SSL and very intense DSL at 550 m).…”
Section: Link To Acousticsmentioning
confidence: 99%
“…To study a wide range of marine ecosystems, DVM phenomena are being tracked globally. It has been possible to increase the number of ADCP moorings and to accumulate data over long periods (Bianchi et al, 2013; Bianchi & Mislan, 2016; Cisewski et al, 2021; Guerra et al, 2019; Receveur et al, 2020). However, since we are limited to manually defining the characteristics of global ecosystems one by one, it is necessary to quantitatively extract and compare the major parameters of different ecosystems.…”
Section: Introductionmentioning
confidence: 99%