caa a22 4500 397551576 CHVBK 20180308164751.0 cr unu---uuuuu 161202e199604 xx s 000 0 eng 10.1006/jmsc.1996.0041 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0041 Acoustical investigation of phytoplankton [Elektronische Daten] [D. A. Selivanovsky, P. A. Stunzhas, I. N. Didenkulov] The existence of gas vacuoles and the dispersion of sound in water containing phytoplankton is demonstrated under natural conditions by measurement of acoustic reverberation and sound velocity, using phase, resonance, and other methods. The volume of vacuoles ranges from 0.1-30% of the cell body volume. Two types of gas cavities are observed: one is diminished elastically under compression, while the other is decreased irreversibly. However, the volume is restored in a few hours with exposure to light. The sound velocity has been measured over the frequency range 10-30 kHz, in water containing phytoplankton cells at a volume concentration of 10−4. The sound velocity increased on average by 0.1% over this frequency range. © 1996 International Council for the Exploration of the Sea Regular Articles nationallicence compression/decompression nationallicence gas cavities nationallicence phase and resonance methods nationallicence reverberation nationallicence sound velocity dispersion nationallicence vacuoles phytoplankton nationallicence Selivanovsky D. A. Institute of Applied Physics RAS, 46 Ulyanov St, Nizhny Novgorod, 603600, Russia aut Stunzhas P. A. Shirshov Institute of Oceanology Krasikov St, 23, Moscow, 117218, Russia aut Didenkulov I. N. Institute of Applied Physics RAS, 46 Ulyanov St, Nizhny Novgorod, 603600, Russia aut ICES Journal of Marine Science Oxford University Press 53/2(1996-04), 313-316 1054-3139 53:2<313 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0041 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0041 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Selivanovsky D. A. Institute of Applied Physics RAS, 46 Ulyanov St, Nizhny Novgorod, 603600, Russia aut NATIONALLICENCE 700 1- Stunzhas P. A. Shirshov Institute of Oceanology Krasikov St, 23, Moscow, 117218, Russia aut NATIONALLICENCE 700 1- Didenkulov I. N. Institute of Applied Physics RAS, 46 Ulyanov St, Nizhny Novgorod, 603600, Russia aut NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/2(1996-04), 313-316 1054-3139 53:2<313 1996 53 icesjms Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford