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Spatial and temporal variability of zooplankton off New Caledonia (Southwestern Pacific) from acoustics and net measurements ArchiMer
Smeti, Houssem; Pagano, Marc; Menkes, Christophe; Lebourges-dhaussy, Anne; Hunt, Brian P. V.; Allain, Valerie; Rodier, Martine; De Boissieu, Florian; Kestenare, Elodie; Sammari, Cherif.
Spatial and temporal distribution of zooplankton off New Caledonia in the eastern Coral Sea was studied during two multidisciplinary cruises in 2011, during the cool and the hot seasons. Acoustic measurements of zooplankton were made using a shipborne acoustic Doppler current profiler (S-ADCP), a scientific echosounder and a Tracor acoustic profiling system (TAPS). Relative backscatter from ADCP was converted to biomass estimates using zooplankton weights from net-samples collected during the cruises. Zooplankton biomass was estimated using four methods: weighing, digital imaging (ZooScan), ADCP and TAPS. Significant correlations were found between the different biomass estimators and between the backscatters of the ADCP and the echosounder. There was a...
Tipo: Text Palavras-chave: South Pacific; Acoustics; Zooplankton; Vertical migration; Water masses; Mesoscale dynamics.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00297/40809/39836.pdf
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