DIFFERENCES IN BACKSCATTERING STRENGTH DETERMINED AT 120 AND 38 KHZ FOR 3 SPECIES OF ANTARCTIC MACROPLANKTON

被引：73

作者：

MADUREIRA, LSP ^{[1
]}

WARD, P ^{[1
]}

ATKINSON, A ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, DEPT ZOOL, CAMBRIDGE CB2 3EJ, ENGLAND

来源：

MARINE ECOLOGY PROGRESS SERIES | 1993年 / 93卷 / 1-2期

关键词：

D O I：

10.3354/meps093017

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The ability to acoustically separate zooplankton species is an important requirement for ecological studies and to improve biomass estimates. In order to distinguish between Euphausia superba and other swarm-forming macroplankters we used a dual frequency echo-sounder (120 and 38 kHz) and echo-integrator during a series of Longhurst Hardy Plankton Recorder (LHPR) hauls near South Georgia. We compared the acoustic parameter Mean Volume Backscattering Strength (MVBS) according to the equation: DELTAMVBS (dB) = MVBS 120 kHz - MVBS 38 kHz. Mean values of DELTAMVBS for E. superba, Themisto gaudichaudii and E. frigida were 4.6, 9.7 and 15.6 dB, respectively, and were significantly different, allowing the 3 species to be separated acoustically.

引用

页码：17 / 24

页数：8

共 36 条

[31] Echo sounding in fishery research [J].

Sund, O .

NATURE, 1935, 135 :953-953

[32]

SUZUKI R, 1969, B JAP SOC FISH OCEAN, P309

[33] SOUND SCATTERING BY LIVE ZOOPLANKTON AND MICRONEKTON - EMPIRICAL-STUDIES WITH A DUAL-BEAM ACOUSTICAL SYSTEM [J].

WIEBE, PH ;

GREENE, CH ;

STANTON, TK ;

BURCZYNSKI, J .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1990, 88 (05) :2346-2360

[34] THE DOUBLE LHPR SYSTEM, A HIGH-SPEED MICROPLANKTON AND MACROPLANKTON SAMPLER [J].

WILLIAMS, R ;

COLLINS, NR ;

CONWAY, DVP .

DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1983, 30 (03) :331-342

[35]

1986, 5TH M SCI COMM HOB

[36]

[No title captured]

← 1 2 3 4 →